PT0E-14311

Portable Gas Leak Detector

SP-220 Series
SP-220(TYPE M)
SP-220(TYPE L)
SP-220(TYPE ML)
Operating Manual(PT0-139)

Contents
1. Outline of the Product..................................................................................................................................... 3
Preface ............................................................................................................................................................ 3
Purpose of use ................................................................................................................................................ 3
Definition of DANGER, WARNING, CAUTION and NOTE ............................................................................. 3
How to check the standards and explosion-proof specifications ................................................................... 4
2. Important Notices on Safety ........................................................................................................................... 5
2-1. Danger cases........................................................................................................................................... 5
2-2. Warning cases ......................................................................................................................................... 6
2-3. Precautions .............................................................................................................................................. 7
2-4. Safety information（for ATEX/IECEx/UKEX specifications） .................................................................... 9
3. Product Components .................................................................................................................................... 10
3-1. Names and functions for each part ....................................................................................................... 10
4. How to Use ................................................................................................................................................... 13
4-1. Before using the detector ...................................................................................................................... 13
4-2. Preparation for start-up.......................................................................................................................... 13
4-3. How to replace the batteries.................................................................................................................. 13
4-4. How to start the detector ....................................................................................................................... 15
4-5. Basic operating procedures................................................................................................................... 17
4-6. How to detect ......................................................................................................................................... 18
4-7. Change of the alarm setpoint ................................................................................................................ 19
4-8. Performing air calibration ...................................................................................................................... 20
4-9. Snap logger ........................................................................................................................................... 21
4-10. Peak hold function ............................................................................................................................... 22
4-11. Change of the alarm and operation sounds ........................................................................................ 22
4-12. How to turn on the illumination lamp ................................................................................................... 23
4-13. Power-off ............................................................................................................................................. 23
5. How to Set Display Mode ............................................................................................................................. 24
5-1. Entering the display mode ..................................................................................................................... 24
5-2. Measured gas switching setting ............................................................................................................ 26
5-3. Log data display .................................................................................................................................... 27
6. How to Set User Mode ................................................................................................................................. 28
6-1. Entering the user mode ......................................................................................................................... 28
6-2. Date/time setting .................................................................................................................................... 30
6-3. Clock function ON/OFF setting.............................................................................................................. 31
7. Alarm Function.............................................................................................................................................. 32
7-1. Gas alarm activation .............................................................................................................................. 32
7-2. Fault alarm activation ............................................................................................................................ 32
8. Maintenance ................................................................................................................................................. 33
8-1. Maintenance intervals and items ........................................................................................................... 33
8-2. How to clean .......................................................................................................................................... 35
8-3. Parts replacement ................................................................................................................................. 35
9. Storage and Disposal ................................................................................................................................... 38
9-1. Procedures to store the detector or leave it for a long time .................................................................. 38
9-2. Procedures to use the detector again ................................................................................................... 38
9-3. Disposal of products .............................................................................................................................. 39
10. Troubleshooting .......................................................................................................................................... 40
11. Product Specifications ................................................................................................................................ 42
12. Appendix ..................................................................................................................................................... 43
12-1. Definition of terms................................................................................................................................ 43-2-

1. Outline of the ProductPreface11.

Outline of the ProductPrefaceThank you for choosing our portable gas leak detector SP-220 series (hereinafter referred to as thedetector). Please check that the model number of the product you purchased is included in thespecifications on this manual.
This manual explains how to use the detector and its specifications. It contains information required forusing the detector properly. Not only the first-time users but also the users who have already used the
product must read and understand the operating manual to enhance the knowledge and experience before
using the detector.
Note that the contents of this manual are subject to change without notice for product improvement. It isalso prohibited to copy or reproduce this manual, in whole or in part, without permission.
Regardless of warranty period, we shall not make any indemnification for accidents and damage caused byusing the detector.
Make sure to read the warranty policy specified on the warranty.

Purpose of use
This detector is used to detect a single channel, such as city gas, LP gas, etc., in air.
It provides three different specifications: TYPE M used to detect leakage of city gases, TYPE L used todetect leakage of LP gases and TYPE ML used to detect leakage of city gases and LP gases with different
calibration available for each type of gases. Detection results are not intended to guarantee life or safety in
any way.

Definition of DANGER, WARNING, CAUTION and NOTE
Throughout this manual, the following indications are used to ensure safe and effective work.

DANGER

This message indicates that improper handling may cause serious
damage on life, health or assets.

WARNING

This message indicates that improper handling may cause serious
damage on health or assets.

CAUTION
NOTE

This message indicates that improper handling may cause minor damage
on health or assets.
This message indicates advice on handling.

-3-1. Outline of the ProductHow to check the standards and explosion-proof specifications

How to check the standards and explosion-proof
specifications
The detector has different specifications depending on the standards or explosion-proof certification type.
Check the specifications of the product you have before use. See the Declaration of Conformity at the endof this operating manual for CE/UKCA marking specifications.
For the product specifications, check the nameplate attached to the product shown in the following figure.

(1) Nameplate example of Japan Ex
specifications(2) Nameplate example of CE/UKCA
marking specifications

UKCA
mark

Ex mark

CE mark* The above nameplate (1) or (2) is
attached depending on the specified
explosion-proof specifications.

-4-2. Important Notices on Safety

2-1. Danger cases

22.

Important Notices on
SafetyTo maintain the performance and use the detector safely, observe the following instructions of DANGER,WARNING and CAUTION.

2-1. Danger cases
DANGER
About use While conducting measurement in a manhole or confined space, do not lean over or look into
the manhole or closed space. It may lead to dangers because oxygen-deficient air or othergases may blow out.
 Oxygen-deficient air or other gases may be discharged from the gas exhausting outlet of thedetector. Never inhale the air or gases.
 High-concentration (100% LEL or higher) gases may be discharged from the gas exhaustingoutlet of the detector. Never use fire near it.

-5-

2. Important Notices on Safety

2-2. Warning cases

2-2. Warning cases
WARNING
Sampling point pressure The concentration meter is designed to draw gases under the atmospheric pressure. If
excessive pressure is applied to the gas inlet and outlet of the detector, measured gases mayleak out from its inside and may cause dangerous conditions. Be sure that excessive pressure
is not applied to them while used.
Air calibration in atmosphere When air calibration is performed in the atmosphere, check the atmosphere for freshness
before beginning it. If interference gases or other gases exist, the adjustment cannot be
performed properly, thus leading to dangers when the gas leaks.
Response to gas alarm A gas alarm is triggered by changes in temperature and humidity. In such a case, check theatmosphere for freshness and perform air again in the measured atmosphere.
Example) If the detector is turned on in a room with a temperature of 20ºC and a humidity of
40% RH and taken outside (a temperature of 30ºC and a humidity of 60% RH), an alarm istriggered by humidity changes. In such a case, perform air calibration outside and measure.
The detector performs air calibration automatically when it is turned on. Even in such a case,check the atmosphere for freshness and perform air calibration again in the measured
atmosphere.

WARNING
Battery level check Before use, check that there remains sufficient battery power. When the detector is not used fora long period, the batteries may be exhausted. Never fail to replace them with new ones beforeuse.
 If a low battery voltage alarm is triggered, gas detection cannot be conducted. If the alarm istriggered during use, turn off the power and promptly replace the batteries in a safe area.
Others Do not throw the detector into fire.
 Do not wash the detector in a washing machine or ultrasonic cleaner, etc.
 Do not block the buzzer sound opening. No alarm sound can be heard.
 Do not remove the battery while the power is on.

-6-

2. Important Notices on Safety

2-3. Precautions

2-3. Precautions
CAUTION
Do not use the detector where it is exposed to oil, chemicals, etc. Do not submerge the detector
under water on purpose.
 Do not use in a place where the detector is exposed to liquids such as oil and chemicals.
 The detector is not water-pressure-resistant. Do not use the detector where a high water pressure isapplied to it (under a faucet, shower, etc.) or submerge it under water for a long time. The detector
is water-proof only in fresh water and running water, and not in hot water, salt water, detergent,chemicals, human sweat, etc.
 The gas inlet and outlet are not water-proof. Be careful not to let water such as rainwater, etc. getinto these parts. Because this may cause trouble and gas cannot be detected.
 Do not place the detector where water or dirt gets accumulated. The detector placed at such alocation may cause malfunction due to water or dirt that gets into the buzzer opening, etc.
 Note that drawing in dirty water, dust, metallic powder, etc. will significantly deteriorate the sensor
sensitivities. Be careful when the detector is used in an environment where these elements exist.
Do not use the detector in a place where the temperature drops below -20ºC or rises over 55ºC.
 The operating temperature of the detector is -20 to +55ºC. Do not use the detector at higher
temperatures, humidities and pressures or at lower temperatures than the operating range.
 Avoid long-term use of the detector in a place where it is exposed to direct sunlight.
 Do not store the detector in a sun-heated car.
 Avoid a sudden humidity or temperature change.
 Do not leave the detector in a place with high temperature and humidity for a long time. The
performance of the unit may deteriorate.
Observe the operating restrictions to prevent condensation inside the concentration meter or gas
sampling hose.
 Condensation formed on the detector or taper nozzle causes clogging, gas adsorption, etc., which
may disturb accurate gas detection. Thus, condensation must be avoided. In addition to theinstallation environment, carefully monitor the temperature/humidity of the sampling point to prevent
condensation, etc. on the detector or taper nozzle. Please observe the operating restrictions.
Do not use a transceiver near the detector.
 Radio wave from a transceiver or other device near the detector may disturb readings. If atransceiver or other radio wave transmitting device is used, it must be used in a place where it
disturbs nothing.
 Do not use the detector near a device that emits strong electromagnetic waves (high-frequency or
high-voltage devices).
Verify that the flow check display is rotating before using the detector.
 If the flow check display is not rotating, gas detection cannot be performed properly. Check whether
the flow rate is lost.
Never fail to perform a regular maintenance.
 Since this is a precision devices, a regular maintenance must be performed. Continuing to use thedetector without performing maintenance will compromise the sensitivity of the sensor, thus
resulting in inaccurate gas detection.

-7-

2. Important Notices on Safety

2-3. Precautions

CAUTION
Others After a gas continuously comes into contact or a highly-concentrated gas comes into contact,
the alarm pattern may continue. In such a case, draw cleaned air for more than five minutes(recommended) and perform air calibration again.
 Pressing buttons unnecessarily may change the settings, preventing alarms from activatingcorrectly. Operate the detector using only the procedures described in this operating manual.
 Do not drop or give shock to the detector. The accuracy of the detector may be deteriorated.
 Do not jab the buzzer opening with a sharp-pointed item. Doing so may cause a failure ordamage.
 Do not remove the panel sheet on the display. The water-proof and dust-proof performances
will be deteriorated.
 Do not affix a label or the like on the infrared port. Infrared communications can no longer be
conducted.
 The operating environment may include gases that have harmful effects on the sensor of thedetector. The detector cannot be used in the presence of the following gases:(1) High-concentration sulfides (such as H2S, SO2, etc.)(2) Halogen gases (such as chloride
compounds, etc.)(3) Silicone (Si compounds)(4) High-concentration solvent gasesDo not use
the detector in the presence of the above (1), (2), and (3) gases (such as high-concentration
sulfides, halogen gases, silicone, etc.), which may shorten the sensor life significantly or cause
malfunctions such as inaccurate readings.
In case the detector is used for detection in the presence of silicone, etc., be sure to check thegas sensitivities before using it again.
If the above (4) gas (high-concentration solvent gas) is exposed, a crack may occur in the unit.
Thus, do not use high-concentration solvent gases.
About battery replacement
 Never fail to turn off the power of the detector before replacing the batteries.
 Replace both of the two batteries with new ones at one time.
 Pay attention to the polarities of the batteries.
Usage In a low-temperature environment, the operating time is shortened due to the battery
performance property.
 At low temperatures, the responses of the LCD display may slow down.
 Perform air calibration under pressure and temperature/humidity conditions close to those in
the operating environment and in fresh air.
 Perform air calibration after the reading is stabilized.
 If there is a sudden temperature change of 15ºC or more between the storage and operational
locations, turn on the power of the detector, let it stand for more than 5 minutes in a similar
environment to the operational location, and perform air calibration in fresh air before using it.
 When cleaning the detector, do not splash water over it or use organic solvents such as alcoholand benzine on it. The surface of the detector may be discolored or damaged.
 If the detector is not used for a long time, turn on the power at least once every six months andcheck that the pump draws in air (about three minutes). The detector, when not activated for along time, may cease to work because of hardening of the grease in the pump motor.
 If the detector is not used for a long time, store it after removing the batteries. Battery leaks
may result in fire, injury, etc.
 When the detector is used again after a long-period storage, never fail to perform air
calibration. For information on readjustment including air calibration, please contact RIKEN
KEIKI.

-8-

2. Important Notices on Safety

2-4. Safety information（for ATEX/IECEx/UKEX specifications）

2-4. Safety information（for ATEX/IECEx/UKEX
specifications）
The portable gas leak detector SP-220 is a gas detector to continuously detect combustible gases.
The detector draws gases with the internal micro pump.
Use only two TOSHIBA AA alkaline batteries (LR6T) connected in series for power supply.
Do not replace the dry batteries in a hazardous location.
Explosion-proof specifications･ Ex ia IIC T4 Ga･

II 1 G Ex ia IIC T4 Ga･ Operating temperature range: -20 to +55°C
Electrical specifications･ Only TOSHIBA AA alkaline batteries (LR6T) can be used.
Certificate Number･ IECEx: IECEx PRE 15.0060･ ATEX: Presafe15 ATEX7188X
・ UKEX: DNV 22 UKEX 25920X
Applied standards･ IEC 60079-0:2017･ EN IEC 60079-0:2018･ IEC 60079-11:2011･ EN60079-11:2012

・ BS EN IEC 60079-0:2018
・ BS EN 60079-11:2012

Specific conditions of “X”-mark:Regarding ATEX specification, the measuring function according to Annex II paragraph 1.5.5 of the
Directive is not covered by this EU-type examination.
It shall comply with the requirements from the relevant European harmonized standards which
provide guidance on the performance of gas detection equipment and safety devices.
The measuring function according to schedule 1, paragraph 24 of the Regulation is not covered inthis UK-type examination. It shall comply with the requirements from the relevant UK DesignatedStandards which provide guidance on the performance of gas detection equipment.
WARNING･ Do not replace the battery unit in a hazardous location.
･ Do not replace the dry batteries in a hazardous location.
･ Do not disassemble/modify the unit.
･ Use only TOSHIBA AA alkaline batteries (LR6T) for the dry battery unit.
INST. No. 0 0 0 0 0 0 0 0 0 0 0
AB C
DE
A: Manufacturing year (0-9)
B: Manufacturing month (1-9, XYZ for Oct.-Dec.)
C: Manufacturing lot
D: Serial number
E: Factory code
Manufacturer
RIKEN KEIKI CO., LTD.
2-7-6 Azusawa, Itabashi-ku, Tokyo, 174-8744 JapanWeb site: https://www.rikenkeiki.co.jp/

NOTE
TOSHIBA AA alkaline batteries (LR6) can be used for Japan Ex specifications.
-9-3. Product Components

3-1. Names and functions for each part3
3.

Product Components

3-1. Names and functions for each part
This section describes names and functions of main unit and battery unit parts and LCD display.

Main unit
(1)
(11)
(2)
(3)

(7)
(4)

(5)
(6)

(9)
(8)

(10)

No.
(1)

Name
Gas inlet

Function
Collects gases.

(2)
(3)

Alarm LED arrays
LCD display

Blinks or lights up in response to an alarm.
Displays gas concentrations, measured gas name, alarms, etc.

(4)

AIR button

Keep this switch pressed to perform air calibration. Used to change thescreen and decrease numerical values in the setting mode.

(5)

MODE button(6)

POWER button

Turns the power ON or OFF. Used to change the screen and confirm
values in the setting mode.

(7)
(8)

Gas outlet
Alarm LED arrays

Exhausts the gas drawn into the detector. (Do not block it.)
Blinks or lights up in response to an alarm.

(9)

Infrared port

Used during infrared communications.

Press this switch to change between display modes. Used to change
the screen and increase numerical values in the setting mode.

(10)

Battery coverProtects the battery. Remove it to replace the batteries.

(11)

LED light

Provides you light for work.
- 10 -

3. Product Components

3-1. Names and functions for each part

Standard accessories
Unpack and check the main unit and accessories.
AA alkaline battery (2 pcs) (installed)
Taper nozzle (1 pc)
Rubber protection cover (1 pc) (Protect the detector from shocks by being hit, etc.)Hand strap (1 pc)

Waterproofing filter for exchange (5 pcs)

Product warranty (1 pc)
Operating manual (1 pc)
Appearance/
weightName

Quantity

Name

1 pc

AA
alkaline battery

Appearance/
weightQuantity

Approx. 50 mm
Approx. 14.5 mm

Approx.

Approx.

47mm

42 g

Approx. 44 g

1 pc

Hand strap

Approx. 9 g

Approx.
φ16 mm1 pc

Approx. 2 g

Plastic bag

Water-proofing
filter for
exchange

2 pcs(installed)

Approx. 150 mm

Taper nozzle(attached)

Approx. 70 mm

Rubberprotection
cover

Approx. 149 mm

Approx. 42.5 mm

1 bag(5 pcsincluded)Operatingmanual－1 pc

Product
warranty－

1 pc

Approx. 1g

If there is anything missing, contact RIKEN KEIKI.

CAUTION Do not remove the panel sheet on the display. The water-proof and dust-proof performances will
be deteriorated.
 Do not affix a label or the like on the infrared port. Infrared communications can no longer be
conducted.

- 11 -

3. Product Components

3-1. Names and functions for each part

LCD display
(1)

(5)

(2)

(6)

(7)
(3)

(8)
(4)

(9)

No.
(1)

Name
Operating state display

Function
Displays the operating status in the detection mode. Normal: Blinking

(2)
(3)

Flow check display
Gas concentration
display

Displays the drawing status. Normal: Rotating
Displays gas concentration and unit.

(4)

Alarm sound display

Displays the setting status of the alarm sound.

(5)

Operation sounddisplay

Displays the setting status of the operation sound.

(6)

Battery level icon

Displays a reference of the battery level.

(7)

Bar meter display

Displays the level of gas concentration with the bar meter(8)

Mode display

Displays the measuring mode status.

(9)

Gas name andmessage display

Displays the gas name and a message according to the function.

NOTE

 The meanings of battery level icons are as follows:: Sufficient/: Low/: Needs replacement If the battery level further drops, theinside of the battery icon starts to blink ().

- 12 -

4. How to Use

4-1. Before using the detector

44.

How to Use

4-1. Before using the detector
Not only the first-time users but also the users who have already used the detector must follow theoperating precautions.
Ignoring the precautions may damage the unit, resulting in inaccurate gas measurement.

4-2. Preparation for start-up
CAUTIONThe display is covered by the protective film to prevent scratches from shipping.
Be sure to remove this film before use.
Gas monitor with this film will not satisfy the explosion-proof performance.

Before starting gas detection, check the followings.






Check that the protective film attached on the display from shipping is removed
The batteries are installed (with sufficient battery level).
Check that the taper nozzle and filter are not contaminated.
Check that the taper nozzle is not bent or has no hole.
Check that the nipple to which the taper nozzle is attached is not loose.

4-3. How to replace the batteries
When the detector is used for the first time, or when the battery level is low, attach two new AA alkaline
batteries according to the following procedures.

1

Check that the power of thedetector is turned off.
Turn off the power if it is turned on.

2Turn the lock plate
counterclockwise and open
the battery cover.

3

Remove old batteries andthen put new batteries
while observing the correct
polarity.

4

Close the battery cover andturn the lock plateclockwise to lock.

Battery cover
Lock plate

Dry batteries

Displaying battery
polarity- 13 -

4. How to Use

4-3. How to replace the batteries

CAUTION

Never fail to turn off the power of the detector before replacing the batteries.
Replace the batteries in a safe place.
Replace both of the two batteries with new ones at one time.
Pay attention to the polarities during replacement. Replace while checking the battery polarities
stamped on the body.
 If the battery cover is not completely locked, the dry batteries may drop off or water may get inthrough the clearance. Water may also get in if a minute foreign substance is caught between
the detector and battery cover.

- 14 -

4. How to Use

4-4. How to start the detector

4-4. How to start the detector
When the power is turned on, a self-diagnostic starts, and then the detector enters the detection mode.

Power-onPress and hold the POWER button until the buzzer blips (one second or longer) to turn on the power.
When the power is turned on, the LCD display changes automatically as shown below, and the detector
enters the detection mode.
(Display example: For city gases)

1 Press and hold the POWER button for one second or longer.
Hold it down until all the LCDs and alarm lamp light up and the buzzer blips.
All LCDs lightup

Date/time
display *Gas name/full scale display

Warm-up time

Display example:
Thursday,
October 01, 2015
12:34

Display example:
CH4(Display for citygases)

Detection mode

Automatic air
calibration
display

The buzzer blips
once and thedetection mode isdisplayed.
- 15 -

4. How to Use

4-4. How to start the detector* The date/time display is displayed only when the clock function is enabled. It is not displayed because theclock function is disabled by default.
To enable the clock function, see "6-3. Clock function ON/OFF setting" on page 31.

NOTE

 When powering on after leaving the detector for more than five minutes with the batteries removed,
such as when powering on for the first time, replacing the batteries, etc., or powering on with thebatteries inserted with incorrect polarities, a clock abnormality (FAIL CLOCK) may be triggered.
When it is reset using the MODE button, the detector moves to the date/time setting screen. See "6-2.
Date/time setting" on page 30 and set the date/time.
 Warm-up time (WARM UP) is different depending on the stability status of the sensor.
 If the detector is not used for a long period, warm-up time may be longer or a sensor abnormality(FAIL SENSOR) may be displayed. In such a case, restart the detector.
 The detector performs air calibration automatically on start-up. If an environment where the detector
is turned on is different from the measured atmosphere, perform air calibration again in the measured
atmosphere.
About LCD backlight Pressing the AIR, MODE or POWER button turns on the LCD backlight. The LCD backlight goes off
after 30 seconds or so of no operation.
When an alarm is triggered, the LCD backlight lights up automatically.

- 16 -

4. How to Use

4-5. Basic operating procedures

4-5. Basic operating procedures
The detection mode is used after power-on.
(Display example: For city gases)

MODE button

AIR + POWER buttons
Hold down for
3 secsHold down for
1 sec

Hold down for
3 secs<Peak clear><Peak hold ON/OFF>

Illumination
lamp lights
up<Operation/alarm sound ON/OFF>AIR button

AIR + MODE buttons<Display mode>

MODE + POWER buttons

Hold down for
3 secs<AIR calibration><Alarm setpoint change><Snap logger record>* Displayed only when the clockfunction is enabled. See "6-3.
Clock function ON/OFF setting"on page 31.
- 17 -

4. How to Use

4-6. How to detect

4-6. How to detect
Put the tip of the taper nozzle close to the detection area in the detection mode and perform gas detection.
If a gas is drawn, the detected gas concentration is displayed with the bar meter on the LCD display.

DANGER While conducting measurement in a manhole or confined space, do not lean over or look into
the manhole or closed space. It may lead to dangers because oxygen-deficient air or othergases may blow out.
 Oxygen-deficient air or other gases may be discharged from the gas exhausting outlet of thedetector. Never inhale the air or gases.
 High-concentration (100% LEL or higher) combustible gases may be discharged from the gas
exhausting outlet of the detector. Never use fire near it.

WARNING The detector is designed to draw gases around it under the atmospheric pressure. If excessive
pressure is applied to the gas inlet and outlet of the detector, detected gases may leak out fromits inside and may cause dangerous conditions. Be sure that excessive pressure is not applied
to the detector while used.
 When air calibration is performed in the atmosphere, check the atmosphere for freshness
before beginning it. If interference gases or other gases exist, the adjustment cannot be
performed properly, thus leading to dangers when the gas leaks.
 Issuance of a gas alarm indicates that there are extreme dangers. Take proper actions basedon your judgment.
 Before use, check that there remains sufficient battery power. When the detector is not used fora long period, the batteries may be exhausted. Never fail to replace them with new ones beforeuse.
 If a low battery alarm is triggered, gas detection cannot be conducted. If the alarm is triggered
during use, turn off the power and promptly replace the batteries in a safe area.
 Do not block the buzzer sound opening. No alarm sound can be heard.
 If the main unit is dropped or given a shock, the reading may rise and it may remain so. In sucha case, perform air calibration in a place where the surrounding air is fresh.

CAUTION Before performing gas detection, attach the taper nozzle provided with the detector to prevent
disturbances by air dust.

- 18 -

4. How to Use

4-7. Change of the alarm setpoint

4-7. Change of the alarm setpoint
In the detector, the alarm setpoint of city gas (CH4) and LP gas (LPG) is factory set to 30 ppm.
The alarm setpoint can be changed, depending on the purpose, in five levels.

How to change the alarm setpoint1

In the detection mode, press the AIR and MODE buttons at the same time.
The alarm setpoint changes by five every time the AIR and MODE buttons are pressed.

NOTE

 The alarm setpoint cannot be set to 10000 ppm.

- 19 -

4. How to Use

4-8. Performing air calibration

4-8. Performing air calibration
After a high-concentration gas is detected or an alarm is triggered by temperature/humidity changes,
perform air calibration in the measured atmosphere.
* Before performing air calibration, check that the surrounding air is fresh.
(Display example: For city gases)

1

In the detection mode,
hold down the AIR button.

(Display for city gases)

2

Release the AIR button
when the display
changes from "HOLD
AIR" to "RELEASE".
(Buzzer sound: Three times <blip,
blip, blip>)▼▼
The air calibration is done and thedetector returns to detectionmode.
(Buzzer sound: Once <blip>)
If air calibration fails, "FAIL AIR
CAL" is displayed.
Perform air calibration again in
fresh surrounding air.

- 20 -

4. How to Use

4-9. Snap logger

NOTE Perform air calibration under pressure and temperature/humidity conditions close to those in theoperating environment and in fresh air.
 Perform air calibration after the reading is stabilized.
 If there is a sudden temperature change between the storage and operational locations, turn on the
power of the detector, let it stand for five minutes or more in a similar environment to the operational
location, and perform air calibration in fresh air before using it.

4-9. Snap logger
Any peak value during measurement can be recorded.
Up to 256 points of data can be recorded. When the number of recorded data points reaches the maximum,
recorded data will be overwritten, starting from the oldest data.
This function is enabled when the clock function is enabled. Since the clock function is disabled by default,
enable it before using the snap logger function (See "6-3. Clock function ON/OFF setting" on page 31).

1

In the detection mode,press the MODE and
POWER buttons at thesame time.
The detector enters the station ID
selection screen.

2

Use the MODE or AIR
button to select thestation ID and press the
POWER button.

To stop recording, press the
AIR and MODE buttons at thesame time. The detector
returns to the detection mode.

The peak value is displayed.

3

Press the POWER button.
The date/time and peak value arerecorded.

To continue recording the log,
repeat steps 2 to 3.
To stop recording the log, press
the AIR and MODE buttons at
the same time. The detector
returns to the detection mode.

NOTEThe recorded data can be read out by the "Data Logger Management Program" (optional). See theoperating manual of "Data Logger Management Program" for more information.

- 21 -

4. How to Use

4-10. Peak hold function

4-10. Peak hold function
When the peak hold function is enabled, the latest peak value is always displayed with the bar meter.
(Display example: For city gases)

1

In the detectionmode, hold down the
MODE button (forthree seconds orlonger).
The peak hold function isenabled. While the peakhold function is enabled, "P"is displayed on the LCD
display.
To disable the peak holdfunction, hold down the
MODE button for threeseconds or longer.

NOTE To clear a retained peak value, hold down the MODE button (for one second) in the detection mode.

4-11. Change of the alarm and operation sounds
Turn the alarm and operation sounds ON or OFF.
(Display example: For city gases)

1

In the detection mode, press the AIR and POWER buttons at the same time.
The settings for the alarm and operation sounds are switched every time the AIR and POWER buttons
are pressed.

Alarm sound ON
Operation sound ON

Alarm sound OFF
Operation sound ON

Alarm sound OFF
Operation sound OFF- 22 -

Alarm sound ON
Operation sound OFF

4. How to Use

4-12. How to turn on the illumination lamp

4-12. How to turn on the illumination lamp
The illumination lamp can be turned on when a measuring place is dark or in other situation.

1

Hold down the AIR and POWER buttons at the same time (for threeseconds or longer).
The illumination lamp lights up. The illumination lamp will automatically go off in about two minutes
after it lights up.
To turn off the illumination lamp, hold down the AIR and POWER buttons at the same time (for threeseconds or longer).

4-13. Power-off
Press and hold the POWER button (at least three seconds) until the buzzer blips three times ("TURN OFF"disappears) to turn off the power.

CAUTION If a gas remains in the detector, it enters the automatic exhaust mode (for a maximum of 30
seconds). However, the detector is turned off after the automatic exhaust mode. The mode
counts down from automatic exhaust start (PURGE 30). The detector switches to the "TURN
OFF" display when the gas exhaust is completed and is turned off.

Automatic exhaust start (PURGE 30)- 23 -

5. How to Set Display Mode

5-1. Entering the display mode

55.

How to Set Display Mode

5-1. Entering the display modeThis mode allows users to view and change various display settings and perform other operation.
(Display example: For city gases)

1

In the detection mode, press the
MODE button.
The detector enters the peak value display in thedisplay mode.

2

Next, press the MODE button todisplay the appropriate menu.
The setting screen for the display mode isswitched every time the button is pressed.
Holding down the button also switches thesetting screen. When the detector returns to thedetection mode, the setting screen stops being
switched.

3

Select the setting item and press
the POWER button.
For setting items, see "Display mode overview"on page 25.

NOTE

 The detector automatically returns to the detection mode in about 20 seconds if the detector is left
unoperated.
 Gas detection is continued in the display mode and an alarm can be activated.

- 24 -

5. How to Set Display Mode

5-1. Entering the display mode

Display mode overview
Item

LCD display

Details

Peak display

Displays the maximum concentration
detected during the period from power-on
to the point of checking.
* To clear the peak display, hold down the
AIR button until "PEAK CLR" isdisplayed.

Measured gas switching
setting

By changing the setting to the
pre-registered gas in the detector, theconverted concentration from thedetection target gas will be displayed.
(P. 26)

Log data display

Displays the data recorded by the snap
logger. (P. 27)* Displayed only when the clock function
is enabled
See "6-3. Clock function ON/OFF
setting" on page 31.

Enters the user mode.
(P. 28)Entering user mode

- 25 -

5. How to Set Display Mode

5-2. Measured gas switching setting

5-2. Measured gas switching setting
Normally, the concentration display of the detector is "CH4 or LPG" by default depending on thespecifications; however, the display can be switched between LPG and CH4 according to the specifications
to detect its concentration.
(Display example: For city gases)

1

On the "GAS LIST"
screen in the display
mode, press the POWER
button.
The detector enters the gas
reading setting.

▼
The currently set gas name isdisplayed.

2

Press the MODE or AIR
button to select a gas
name to be readinstead.
The gas name switches toanother every time the button ispressed.

3

When the target gas
name is displayed,press the POWER
button.
"END" is displayed, returning to
the display mode.

- 26 -

5. How to Set Display Mode

5-3. Log data display

5-3. Log data display
The data recorded by the snap logger can be viewed.
The "REC DATA" screen is displayed only when the clock function is enabled (See "6-3. Clock function
ON/OFF setting" on page 31).
(Display example: For city gases)

1

On the "REC DATA"
screen in the display
mode, press the POWER
button.
The detector enters the log data
display.
The recorded date/time isdisplayed and the station ID andmemory number are displayedalternately. If there is norecorded data, "NO DATA" isdisplayed.

2* When there is no recorded data

Press the MODE or AIR
button to select log
data to be displayed.
The recorded content switches
to the other every time thebutton is pressed.

<Station ID>

3

When the target log
data is displayed, press
the POWER button.
The gas name and peak valueof the selected memory aredisplayed alternately.

4

To exit the display,press the MODE andAIR buttons at the sametime.
The detector returns to thedisplay mode.

- 27 -<Memory number>

6. How to Set User Mode

6-1. Entering the user mode

6
6.

How to Set User Mode

6-1. Entering the user mode
The maintenance including internal clock correction, etc. can be performed.
(Display example: For city gases)

1

In the detection mode, press the
MODE button a few times to display"USER" and then press the POWER
button.
The detector enters the date/time setting in theuser mode.

2

Next, press the MODE or AIR button
to display the appropriate menu.
The setting screen for the user mode switches toanother every time the button is pressed.

3

Select the setting item and press
the POWER button.
For setting items, see "User mode overview" onpage 29.

CAUTION
 Return to the detection mode after use.

- 28 -

6. How to Set User Mode

6-1. Entering the user mode

User mode overview
Item

LCD display

Details
Set the date/time of the internal clock.
(P. 30)Date/time setting* When the clock function is disabled, thedate/time setting screen is not
displayed.

Clock function ON/OFF
setting

Enable or disable the clock function.

ROM/SUM display

Displays the program number and SUM
value of the detector.
* This is not typically used by the user.

Entering detection mode

To exit the user mode, press the POWER
button to enter the detection mode.

- 29 -

6. How to Set User Mode

6-2. Date/time setting

6-2. Date/time setting
Set the date/time of the internal clock.
The date/time setting screen is displayed only when the clock function is enabled. Enable the clock functionin "6-3. Clock function ON/OFF setting" on page 31 before setting the date/time.

1

On the "DATE" screen in the user
mode, press the POWER button.
The detector enters the date/time setting.

2

Press the MODE or AIR button, set
the date/time and press the POWER
button.

3

Set year -> month -> day -> hour ->minute in this order.

When the "minute" value is confirmed, "END" isdisplayed and then the detector returns to theuser mode menu.

- 30 -

6. How to Set User Mode

6-3. Clock function ON/OFF setting

6-3. Clock function ON/OFF setting
Enable or disable the clock function.
The clock function is disabled by default. If the date/time needs to be displayed on start-up or the snap logger
function is used, enable the clock function.

1

On the "CLOCK" screen in the user
mode, press the POWER button.

2

Press the MODE or AIR button,
select ON/OFF of the clock function
and press the POWER button.

3

Setting completed
After the clock function ON/OFF setting iscompleted, "END" is displayed and then thedetector returns to the user mode menu.

NOTE

 When the clock function is changed from disabled to enabled, a clock abnormality (FAIL CLOCK)
may be triggered if the date/time is inaccurate. When the failure condition is reset using the MODE
button, the detector moves to the date/time setting screen. Set the date/time in accordance with
"6-2. Date/time setting" on page 30.
 When the clock function is changed from disabled to enabled for the
first time, powered on after leaving the detector for more than five minuteswith the batteries removed, or powered on with the batteries inserted withincorrect polarities, a clock abnormality (FAIL CLOCK) may be triggered.

- 31 -

7. Alarm Function

7-1. Gas alarm activation

7
7.

Alarm Function

7-1. Gas alarm activation"Gas alarm" is triggered in the detector using a blinking alarm lamp, buzzer sound and bar meter display
when the concentration of detected gas reaches or exceeds the alarm setpoint values. (Auto-reset
operation)
Blinking alarm lamp and buzzer sound operation for gas alarms have different intervals depending on thedetected concentration.

7-2. Fault alarm activation"Fault alarm" is triggered using a buzzer sound and blinking alarm lamp when an abnormality is detected in
the detector. (Self-latching)
When an alarm is triggered, one of the following fault details is displayed on the LCD.
- System: FAIL SYSTEM- Battery voltage: FAIL BATTERY
abnormalities
low- Calibration: FAIL AIR CAL- Clock: FAIL CLOCK
abnormalities
abnormalities- Low flow rate
: FAIL LOW FLOW
- Pump: FAIL PUMP
abnormalities- Sensor: FAIL SENSOR
abnormalities
Alarm lamp

BuzzerRepeatedly blinks at about
one-second intervals.
Repeatedly sounds intermittent
beeps at about one-second
intervals.
Blip-blip, blip-blip
Display example of low flow rate
(LOW FLOW)LCD display

If a fault alarm is triggered, determine the cause and take appropriate action.
If the unit has problems and is repeatedly malfunctioning, contact RIKEN KEIKI immediately.
The recorded data can be read out by the "Data Logger Management Program" (optional). See theoperating manual of "Data Logger Management Program" for more information.
- 32 -

8. Maintenance8-1. Maintenance intervals and items

8
8.

MaintenanceThe detector is a precision devices.
To maintain the performance of the detector and improve the reliability of detecting leakage, perform aregular maintenance.

8-1. Maintenance intervals and items
Perform the following maintenance regularly before use.
･ Daily maintenance: Perform maintenance before commencing each work.
･ Monthly maintenance: Perform alarm test once a month.
･ Regular maintenance: Perform maintenance once or more for one year to maintain the performance as aunit.
Maintenance
item
Battery level
check

Concentration
display check

Flow rate
check
Filter check
Gas alarm
calibration

Maintenance content
Check that the battery level issufficient.
Make the detector draw in fresh air
and check that the concentration
display value is zero. When thereading is incorrect, perform zeroadjustment by air calibration after
ensuring that no other gases exist
around it.
Check the flow check display to findabnormalities.
Check the dust filter for dust or
clogging.
Check the gas alarm using acalibration gas.

- 33 -

Daily
maintenance

Monthly
maintenanceRegularmaintenance

○

○

○

○

○

○

○

○

○

○

○

○

-

-

○

8. Maintenance8-1. Maintenance intervals and items

About maintenance services
We provide services on regular maintenance including span adjustment, other adjustments andmaintenance.
To make the calibration gas, dedicated tools, such as a gas cylinder of the specified concentration, gas
sampling bag, etc., must be used.
Our qualified service engineers have expertise, knowledge and other information on the dedicated tools
used for services, along with other products. To maintain the safety operation of the unit, please use ourmaintenance service.
The followings are typical maintenance services. For details, contact RIKEN KEIKI.
<Main Services>
Item
Battery level
check
Concentration
display check
Flow rate check

Filter checkSpanadjustment
Cleaning andrepair of the unit
(visualdiagnosis)
Unit operation
check
Replacement ofconsumableparts

Services
Checks the battery level.
Verifies that the concentration display value is zero by using the zero gas.
Performs the air calibration if the reading is incorrect.
Checks the flow rate indicator to find abnormalities.
Checks the flow rate by using an external flow meter to verify the correctness of theflow rate indicator on the detector. If the flow rate is incorrect, performs the flow rateadjustment.
Checks the dust filter for dust or clogging.
Replaces a dirty or clogged dust filter.
Performs span adjustment using a calibration gas.
Checks dust or damage on the surface of the unit, cleans and repairs such parts.
Replaces parts which are cracked or damaged.
Operates the buttons to check the operation of functions and parameters, etc.
Replaces consumable parts, such as a sensor, filter, pump, etc.

- 34 -

8. Maintenance8-2. How to clean

8-2. How to clean
Clean the detector if it becomes extremely dirty. The detector must be turned off while cleaning it. Use a
waste cloth or the like to remove dust. Do not use water or organic solvent for cleaning because they may
cause malfunctions.
Because an extremely contaminated inside of the taper nozzle may disturb the gas detection, it must be
cleaned with dry air, etc.

CAUTION When cleaning the detector, do not splash water over it or use organic solvents such as
alcohol, benzene, etc. on it. Otherwise, it may cause discoloration or damage to the surface ofthe detector or a sensor failure.

NOTE When the detector gets wet, water may remain in the buzzer sound opening or grooves. Drain water
as follows:(1) Wipe away moisture on the detector thoroughly using a dry towel, cloth, etc.
(2) While holding the detector firmly, shake it about ten times with the buzzer sound opening facing
downward.
(3) Wipe away moisture coming out from the inside thoroughly using a towel, cloth, etc.
(4) Place the detector on a dry towel, cloth, etc. and let it stand at normal temperatures.

8-3. Parts replacement
Filter replacement procedureContinuing to use the detector may cause the filter to be contaminated or clogged.
Replace the filter if it becomes extremely dirty.
Also, replace the filter when it has absorbed water or has a lower flow rate.

1

Turn the cap counterclockwise andremove it.

2

Remove the rubber seal from the cap.

- 35 -

Cap

Rubber seal

8. Maintenance3

8-3. Parts replacement

Replace the filter placed inside therubber seal with a new one.
FilterRubber seal

4

Attach the rubber seal with the filter
attached, to the cap.
At this time, check that the rib has been firmly
inserted into the groove.
Rib
Groove5

Attach the cap with the rubber seal
attached, to the main unit.

- 36 -

8. Maintenance8-3. Parts replacement

Interference gas removal filter (CF-8392) replacement
procedure
The interference gas removal filter (CF-8392) is installed to the detector to remove interference gases thatdamage sensors for silicone, sulfides, etc.
Continuing to use the detector may cause the filter to be contaminated or clogged. Replace the filter when
it has absorbed water or oil, etc. or has a lower flow rate due to clogging, or when the sensor sensitivity
deteriorates significantly.
Install the filter by sliding the grooves on its sides to the guide of the case.

Sensor replacement
The built-in sensors of the detector have a validity period and must be replaced regularly (warranty period
one year).
The sensor life has expired if, for example, the sensors cannot be calibrated in span adjustment, thereadings do not come back after air calibration, or the readings fluctuate.
In this case, contact RIKEN KEIKI.

Battery replacement
For battery replacement, see "How to replace the batteries" on page 13.

- 37 -

9. Storage and Disposal

9-1. Procedures to store the detector or leave it for a long time

99.

Storage and Disposal

9-1. Procedures to store the detector or leave it for along time
The detector must be stored under the following environmental conditions.
• In a dark place under the normal temperature and humidity away from direct sunlight• In a place where gases, solvents, vapors, etc. are not present
Store the detector in a shipping carton, if any, in which the product was delivered.
Store the detector away from dust, etc. if the shipping carton is not available.

CAUTION If the detector is not used for a long time, store it after removing the batteries. Leaks from drybatteries may result in fire or injury.
 The detector, when not activated for a long time, may cease to work because of hardening of
the grease in the pump motor.

9-2. Procedures to use the detector again
CAUTION When the detector is used again after a long-period storage, never fail to perform a calibration.
 Contact RIKEN KEIKI for information on readjustment including calibration.

- 38 -

9. Storage and Disposal

9-3. Disposal of products

9-3. Disposal of products
When the detector is disposed of, it must be treated properly as an industrial waste in accordance with thelocal regulations, etc.

WARNING Dispose of dry batteries in accordance with procedure specified by the local authority.

<Disposal in EU Member States>
When disposing of the detector in EU member states, sort the batteries as specified. Handle the removed
batteries according to the classified refuse collection system and recycling system based on theregulations of EU member states.
Removing batteries
For battery removal, see "4-3. How to replace the batteries" on page 13.

NOTE
Crossed-out recycle dustbin markThis symbol mark is indicated on the products which contain the batteries whichfall under EU Battery Directive 2006/66/EC. Such batteries need to be disposed ofas specified by the latest Directive. This symbol mark indicates that the batteries
need to be separated from the ordinary waste and disposed of appropriately.

- 39 -

10. Troubleshooting

9-3. Disposal of products

1010.

Troubleshooting

The Troubleshooting does not explain the causes of all the malfunctions which occur on the detector. This
simply helps to find the causes of malfunctions which may frequently occur.
If the detector shows a symptom which is not explained in this manual, or still has malfunctions eventhough remedial actions are taken, please contact RIKEN KEIKI.

<Abnormalities on Unit>
Symptoms

CausesActions

The battery level is too low.

Replace both of the two batteries with newones.

The POWER button was
released quickly.

For power-on, keep the POWER buttonpressed until a blip is heard.

Dry batteries are notinstalled properly.

Check that the batteries are properly
installed to the main unit.

Abnormal operations

Disturbances by sudden
static electricity noise, etc.

Turn off the power once and then turn it on
again (restart).

Cannot operate thedetector.

Disturbances by sudden
static electricity noise, etc.

Remove the batteries in a safe place. Thenreinstall them and turn on the power toperform operations.

System abnormalities
FAIL SYSTEM

A circuit abnormality
occurred.

Request RIKEN KEIKI for repair.

Sensor abnormalities
FAIL SENSOR

A sensor has failed.

Remove the batteries in fresh air. Thenreinstall them and turn on the power toperform operations. Restart the detector a
few times. If the problem still persists,request RIKEN KEIKI to replace the sensor.

A low battery voltage
alarm is displayed.
FAIL BATTERY

The battery level is low.

Turn off the power and replace the drybatteries with new ones in a safe area.

Water, oil or the like isdrawn.

Check the taper nozzle for any damage ormark of drawn water, oil, etc.

The taper nozzle is clogged.

Check the taper nozzle for connection
condition, clogging, torsion, etc.

The detector was poweredon at a low temperature or
has not been used for along time.

Cycle the power a few times. The pump
may start operating. If the problem still
persists, request RIKEN KEIKI to replace
the pump.

The pump has deteriorated.

Request the dealer or Riken Keiki local
representative to replace the pump.

The power cannot be
turned on.

A low flow rate alarm isdisplayed.
FAIL LOW FLOW

- 40 -

10. Troubleshooting
Symptoms
Air calibration
impossible
FAIL AIR CAL

9-3. Disposal of products
CausesActions

Fresh air is not suppliedaround the detector.

Supply fresh air and then perform air
calibration in the measured atmosphere.

Clock abnormalities
FAIL CLOCK

Abnormalities of the internal
clock

Make a setting of date/time.
If such a symptom is observed repeatedly,
the built-in clock is seemingly
malfunctioning. Thus, it must be replaced.
Request RIKEN KEIKI for repair.

Pump abnormalities
FAIL PUMP

Abnormalities of the pump

Request RIKEN KEIKI for repair.

- 41 -

11. Product Specifications

11
11.

Product Specifications

Model

SP-220(TYPE M)

Detection principle
Gas to be detected

Hot-wire semiconductor
City gas
LPG(Switchable to LPG)
(Switchable to citygas)

Calibration gas

City gas (CH4)
calibration

Concentration
display
Detection range
Detection method
Alarm setpoint value
Displays

LCD bar meter + grid

Response time (underSP-220 (TYPE L)

LPG (i-C4H10)
calibration

SP-220 (TYPE ML)
City gas/LPG(Switched)
LPG (i-C4H10) calibration
City gas (CH4) calibration* Two-gas calibration

10 - 10000 ppm
Pump suction type
Default: 30 ppm (set one of five levels: 10, 30, 150, 500 and 2000 ppm)
Operating state display, flow check display, alarm sound display, operation
sound display,battery level display, bar meter display, mode display, gas name andmessage display
3 seconds or lessthe same conditions)

Gas alarm typeGas alarm display
Gas alarm patternFault alarm
Fault alarm display
Fault alarm pattern
Power supply
Continuous
operating time
Operatingtemperature range
Operating humidity
range
Explosion-proof
structure
Explosion-proof
class
Protection class
External dimensions
WeightOne-step alarm
Lamp blinking/buzzer sounding
Non latching (auto-reset)
Sensor abnormality/low flow rate/battery voltage low/systemabnormality/calibration abnormality/clock abnormality/pump abnormality
Lamp blinking/buzzer sounding/fault detail display
Self-latching
AA alkaline battery x 2Approx. 13 hours (alkaline batteries, at 20ºC, without alarms or lighting)-20 - +55ºC
95% RH or less (Non-condensing)
Intrinsically safe explosion-proof structure
II1G Ex ia IIC T4 Ga(ATEX/UKEX)
Ex ia IIC T4 Ga(IECEx)
Ex ia IIC T4(Japan Ex)
Equivalent to IP-55
Approx. 43 (W) x 200 (H) x 39 (D) mm (projection portions excluded)
Approx. 215 g (without batteries)* The gas concentration is only approximate because the detector is designed to be used to detect a small
amount of gas leakage.
- 42 -

12. Appendix

12
12.

Appendix12-1. Definition of termsvol%Gas concentration indicated in the unit of one-hundredth of the volumeppm

Gas concentration indicated in the unit of one-millionth of the volume

LEL

The acronym of Lower Explosive Limit.
Lower explosive limit (LEL) refers to the lowest concentration of a combustible gas
in air capable of causing explosion when ignited.

- 43 -

12. Appendix

12-1. Definition of terms- 44 -

12. Appendix

12-1. Definition of terms- 45 -