RoHS Compliant

READ THE INSTRUCTION MANUALINSTRUCTION

MANUAL

ＭＡＮＯＳＴＡＲ ＳＷＩＴＣＨ
ＭＳ３０

ＴＲ－ＭＳ３０－Ｅ０７〒 653-0031

1 - ２ - ３ , Ni s h i - s h i r i i k e - c h o , N a g a t a - k u , K o b e , J a p a n
TEL：078-631-6000
FAX：078-631-6020

TABLE OF CONTENTS

PAGE

INTRODUCTION・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 1
Ⅰ． PRECAUTIONS・ ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 1
Ⅱ． SPECIFICATIONS OF MANOSTAR SWITCH MS30・ ・・・・・・・・・・・・・・・・・・・・・・・・ 2
Ⅲ． INSTALLATION
1． Caution of service condition・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 5
2． Installation of MS30・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 5
3． Piping material・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 5
4． Pressure of measurement and connection of piping・・・・・・・・・・・・・・・・・・・・・・・・ 5
5． Caution of piping・ ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 6
6． Installation position・ ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 6
7． Wiring・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 6

Ⅳ． SETTING OF PRESSURE
1． Switch contact configuration・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 7
2． Setting of upper limit/ lower limit・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 7
3． Reset time・ ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 8

Ⅴ． ABOUT BUILT-IN MICRO SWITCH
1． Material of contact・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 8
2． Contact material and applicable mecanism for low voltage and low current circuit・・・・ 8
3． Protection of contact of switch・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 9
4． About measured gas and contact failure・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 10

Ⅵ． LINE PART ACCESSORIES・ ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 10
Ⅶ． PERIODIC INSPECTION・ ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 11
Ⅷ． PRODUCT WARRANTY・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 11

INTRODUCTION
Thank you very much for purchasing of "MANOSTAR SWITCH MS30".

!
CautionTo ensure your safety in using this instrument :・ Be sure to read the instruction manual carefully before using the instrument so that you
can use it properly.
Wrong use may result in failure of the instrument and lead to its damage and accident. Thismanual should be kept in a proper place so that you can refer to it any time you need.

Ⅰ． PRECAUTIONS! Warning・ Do not use this instrument where flammable gas is present.
The instrument is not explosion-proof. Do not use the instruments in the circumstance where
flammable gas is present. It may cause explosion.
・ Do not use the instrument at the place where corrosive gas is present.
The instrument is not corrosion resistance construction. Measuring corrosive gas may corrode thereceiving element and housing material of the instrument. It is expected that corrosive gas leaked outof the instrument will harm a person.
・ Do not apply the pressure to the instrument more than it can withstand.
The diaphragm and the retainer are broken if the pressure exceeding withstanding pressure of thepressure receiving element is applied to the instrument. The case body of the instrument is broken if
the pressure exceeding withstanding pressure of the instrument body is applied to the instrument.
・ The instrument is measurable for air and non-corrosive gas only.
The machine is exclusive use of dry air (90％ RH or less). Using measuring the water or oil it may bedamaged and causes the accident.
・ Avoid using where the instrument is subject to many vibration and impact.
Using the instrument where intensified vibration and impact may be damaged the instrument. It is
expected that gas leaks of the instrument which harms a parson.
・ Do not exceed rated voltage in using.
Using the instrument by exceeding rated voltage may cause fire or electric shock.
・ Wire correctly.
Incorrect wiring may cause fire.
・ Do not exceed rated surrounding temperature, humidity and altitude in use.
Using the instrument by exceeding rated surrounding temperature and humidity and altitude it may bedamaged and cause the accident.
・ Do not disassemble or reconstruct the instrument.
It may void the warranty.

! Caution・ As to where to install and how to install this instrument, be sure to follow the instruction manual
provided so as to ensure a proper method.
・ Use the instrument indoors.
・ In case of not being installed in dry and well-kept clean locations, the instrument must be enclosed inbox of min. Protection degree IP54.
・	Do not use organic solvent for cleaning.
Use a cloth soaked with water-diluted neutral detergent to wipe the surface of a product. Using oforganic solvent causes damage on the surface.
・	Dropping the instrument
If the product is dropped onto a desk or floor, not only its exterior but also interior mechanism isbroken.
1

Ⅱ． SPECIFICATIONS OF MANOSTAR SWITCH MS30
Types :

Pressure range code

ＭＳ３０ Ｈ Ｖ ２００ Ｄ －Ｋ （example）
Contact

Ｂｌａｎｋ For general electrical load
－Ｋ For low electrical load

Unit
Pressure range
Tube tap
Setting of scale

Ｄ

Ｐａ

Max. value of scaleＶ

For vinyl or plastic tube

Ｈ
Ｌ

For upper limit setting
For lower limit setting

Pressure ranges and characteristics  :Pressure
range codes

200 D

Pressure ranges

Accuracy of switching point(at 20 ℃ )For upper limit setting
30 ～ 200 Pa
For lower limit setting
20 ～ 200 kPa

Max. switching
Repeatabilities difference
pressures± 10 Pa± 2 Pa

30 Pa

500 D

50 ～ 500 Pa± 25 Pa± 5 Pa40 Pa

  1000 D

100 ～ 1000 Pa± 50 Pa± 10 Pa

60 Pa

Pressure measuring method : Measuring differential pressure
Pressure receiving element : Diaphragm (silicone rubber)
Gas to be measured : Air, non-corrosive and non-combustible gases (not liquid)
Pressure setting method : Dial with scale
Standard installation position : Vertical
In case of installing horizontal position, set the dial kept to add 20 Pa against settingpressure value.
Medium and ambient : - 10 to + 60 ℃ (no freezing)
temperature
Ambient humidity : 90 % RH or less (no dewing)Withstanding pressure : 10 kPa
of instrument bodyWithstanding pressure : 10 kPa
of receiving element
Withstanding vibration : 5 to 10 Hz Amplitude : 10 ㎜ ,10 to 50 Hz Acceleration : 39 m/ s2 (each two hours on triaxial directions)Withstanding impact : 100 m/s2 (each six times on triaxial directions)2

Insulation resistance : Between each terminal and caseWithstand voltage : Between each terminal and case

20 MΩor more (500 V DC megger)
1500 V AC 50 / 60 Hz, for one minute

Material of the outer case : Polycarbonate
Applicable piping : Vinyl, plastic or rubber tube (I.D. 4)
Tube tap polarity : The part of tube tap is marking “H” on high pressure side and “L” on low pressure
side.
Electric connector : mini-clamp Connector 3P (produced by 3M Co., Ltd.)The electric connector wiring side is not attachment for a product. When you need it,use the optional electric connector.
Mass : Approximately 120 g
Accessory : Nil (The plug side connector is an optional extra. Refer to p. 6)
Conformed standards : EU directive

EMC directive

UL standards UL and C-UL recognition component
1) The applicable request standards･･････････････････ UL508
2) File No.･････････････････････････････････････････ E240648
RoHS Directive (2002/95/EC)(Products in compliance with the RoHS carryproduct itself and on each package.)Gor ［［G］］ mark on the label of

Caution : In case of measuring combustible gas and using in combustible gas area, use withintrinsically safe apparatus construction.

3

[ For general electrical load ]Types

MS30HV
MS30LV

Specifications

Rated voltages

Resistive loads

Contact composition
SPDT (single pole double throw type)
Electrical life
70,000 times or more
Material of the contact
Silver (round rivets point)

30 V DC

3A

Inductive loads

2A

time

( constant)
7ms[For low electrical load]
Types

Specifications

Rated voltages

Resistive loads

MS30HV-K
MS30LV-K

Contact composition
SPDT (single pole double throw type)
Electrical life
100,000 switching cycles
Material of the contact
Gold alloy (cross point)

30 V DC

0.1 A

Inductive loads

Rated authorized standard for safety (UL)  :[ For general electrical load ]Types
MS30HV
MS30LV!
Caution[For low electrical load]Rating

Types
MS30HV-K
MS30LV-K

DC 2 A-30 V

Rating
DC 0.1 A-30 V・	In case of driving an inductive load such as relay, contact trouble may be happened due tocounter electromotive force and rush current, therefore insert the protective circuit for
absorbing surge by using diode or varistor (refer to p. 9).
・	In case of low current or voltage, use the low electrical load type. The general electrical loadtype is decreased contact reliability. (refer to p. 8)“The withstanding pressure of the pressure receiving element” means ；T he max. pressure under which the diaphragm withstands distortion or breakage (withstand single
pressure) The single pressure acting on either H or L side.
“The withstanding pressure of the instrument body” means ；T he max. pressure under which the instrument body withstand safely without breakage (double side
withstanding pressure) The pressure acing on both high and low sides.
Note ： The withstanding pressure of the instrument body is not the pressure under which theairtightness of the instrument is guaranteed．

4

Ⅲ． INSTALLATION
Before using this instrument, make sure if it is the type that you requested and meets the demand of theenvironment, pressure and tubing conditions where it is used, by specification.

1. Caution of service conditiona) Do not use the instrument in a place subjected to direct sunlight, vibration or shock, or excessive
moisture. In particular, vibration and shock to the instrument should shorten its life.
b) Use under the medium and ambient temperature from - 10 to + 60 ℃ .
c) The instrument is not waterproof. Do not use it in a place subjected to rain, or other splashing water.
d) The instrument cannot be installed outdoors without an appropriate protection. If outdoor installing isrequired, the instrument should be housed in a box of drip-proof type for outdoor use.
e) In installing the instrument, select the place where the ground is smooth and flat.

2. Installation of MS30
Panel cut size
2×φ5 holes or
2×M4 holes tapped

80±0.3!
CautionTighten the piping connectors with the torque of 1 N･m.
Do not apply excessive torque more than necessary,otherwise it will damage the instrument body.

3. Piping material
Please use I.D 4, the wall thickness of 1 mm or more piping material. Vinyl, plastic or rubber tubes and soft
plastic tubes are suitable. When inserting the piping into the tube tap, please push the piping until it stops.

4. Pressure of measurement and connection of pipinga) Measurement of positive pressure
Connect the tube to the high pressure side piping connector (indicated by red color or letter H). The
lower pressure port (blue or L) should opened to atmosphere, but do not remove the piping connector.
b) Measurement of negative pressure
Connect the tube to the low pressure side piping connector (blue or L). The high pressure port (red or H)
should be opened to atmosphere, but do not remove the piping connector.
c) Measurement of differential pressure
Connect the tube from the high pressure piping connector to the high pressure port (red or H) and fromthe low pressure piping connector to the low pressure port (blue or L).

55. Caution of piping
Independent piping○
Room A

Room B

MS30

MS30b) Prevention of clogged piping due to drain・ I f drain remains within the line, it causes
measurement error. Be sure to install the pressurereceiving instrument above the pressure outlet
port of the pressure detector and arrange the line
so that the drain water should not remain in theslack piping.
・ If the arrangement mentioned above in not possible,
install a drain tank within the line as shown in theright figure and clean it once in a while.

Common piping×
Passageway

Passagewaya) Prohibition of common piping
Piping each of pressure detectors and pressurereceiving instruments tube exclusively dedicatedfor it, and do not connect the piping commonly withthe adjacent system as shown in the right figure.
Common piping causes measurement error because
the pressure of each system interferes.

Room A

Room B

MS30

MS30

Installation diagram of drain tank
SwitchDraintank・ After the cleaning of the tank, check that the air
tightness is fully kept.

Drainc) Errors caused by long distance piping
The speed of response is delayed when the product is used for remote monitoring.
In such application, the I.D. of the connection tube should be as large as possible.
The time constant is almost inversely proportional to the inner cross sectional area of the piping.
If the piping conditions of the high and low pressure side are significantly different, the difference in thepiping resistance between high and low puressure side causes the difference in pressure transmissiontime, and the measurement becomes inaccurate.

6. Installation position
In ordering out of above mentioned installation position, please order us or our agency beforehand. It must
be adjusted before the factory shipment.

7. Wiring・ After confirming the specifications of applicable wiring (cross-section of conductor,O.D. of the wire
cover), serect following the applicable wire.
Accessory for MS30
・ Mini-clamp wiremount plug 3P (produced by 3M Co., Ltd.)
Product code

Color of cover37103-2124-000FL

Green

37103-2165-000FL

Blue

37103-2206-000FL

Gray

AWG No.

Applicable cable
Nominal crosssectional area

20 ～ 220.3 ～ 0.5mm2

Cover

Wire coverｄｉａｍｅｔｅｒ
1.0 ～ 1.2mm
1.2 ～ 1.6mm
1.6 ～ 2.0mm

・ Inserting and clamping of the wire
← The wire is inserted
in the position ofthis line.

Clamp the electric connector with pliers

Insert the wire referring to figure of
the composition of switch contact
on the next page.
6

Ⅳ . SETTING OF PRESSURE
1. Switch contact configuration
・ Composition of contact of this instrument is as shown on
the right.
・ If the instrument is not applied by differential pressure wecall such “normal condition” .

ＣＯＭ.
(1)

Ｎ.Ｏ.
(3)

Increase ofdifferential
pressure

Ｎ.Ｃ.
(2)(1), (2), (3) is terminal number.

・ At normal condition, the contact between COM. and N.C.
is closed, and between COM. and N.O. is open.

・ With increase of differential pressure and reaching the actuation pressure, the contact will be changed
over ; between COM. and N.C. is opened and between COM. and N.O. is closed.

2. Setting of upper limit/ lower limitᵟᶁᶒᶓᵿᶒᶇᶍᶌᴾᶎᶐᶃᶑᶑᶓᶐᶃ

・ When this differential pressure decreases from the pressure
higher than this actuation pressure activating electricalcontact and returning the contact from N.O. (normal open)
to N.C. (normal close), the pressure at this moment is called“reset pressure” .

ᵢᶇᶄᶄᶃᶐᶃᶌᶒᶇᵿᶊᴾᶎᶐᶃᶑᶑᶓᶐᶃ

・ W hen differential pressure applied to the instrument isincreased starting from zero and changes over the electriccontact from N.C. (normal close) to N.O. (normal open), thepressure at this moment is called “actuation pressure” .

ᵱᶕᶇᶒᶁᶆᶇᶌᶅᴾᶂᶇᶄᶄᶃᶐᶃᶌᶁᶃ
ᵆᶂᶃᵿᶂᴾᶀᵿᶌᶂᵇᵰᶃᶑᶃᶒᴾᶎᶐᶃᶑᶑᶓᶐᶃ

ᵲᶇᶋᶃ㻱㼤㼜㼘㼍㼚㼍㼠㼕㼛㼚㻌㼐㼕㼍㼓㼞㼍㼙㻌㼛㼒㼟㼣㼕㼠㼏㼔㼕㼚㼓㻌㼐㼕㼒㼒㼑㼞㼑㼚㼏㼑㻌㼜㼞㼑㼟㼟㼡㼞㼑・ There is certain difference between actuation pressure and reset pressure and this is called “dead band” .
・ There are two types of the instrument. One is called “upper limit setting type” type (H) whose scale ofsetting knob is adjusted on actuation pressure, the other is called “lower limit setting type” type (L)which is adjusted on reset pressure.
・ Be careful about the difference between the upper and lower limit setting switched and also understandthe relation between the pressure increase/ decrease and the contact composition before designing theoperational sequence.

Depending on the purpose of use, choose theinstrument either “upper limit setting type”or “lower
limit setting type”
Adjusting of scale

Difference of contact movement between“upper limit setting type “lower limit setting type”
In case of 50-500 kPa range with set value 250 Pa.
(dead band is 30 Pa)
In case of “upper limit setting type”

Upper limit
setting type

When the differential pressure increases, the circuit isclosed between N.O. and COM. at 250Pa.
Then as the differential pressure decreases, the circuit isopened between N.O. and COM. at 220kPa.

Adjusted in activating pressure

In case of “lower limit setting type”
Lower limit
setting type

When the differential pressure increases, the circuit isclosed between N.O. and COM. at 280Pa.
Then as the differential pressure decreases, the circuit isopened between N.O. and COM. at 250Pa.

Adjusted in reset pressure

The scale of the setting knob is adjusted for both upper and lower limit setting type at our factory before
shipping. It is not allowed for customers to convert from the upper limit setting to the lower limit setting orvice versa.

!
Caution

Do not turn the dial too much exceeding the upper bound or the lower bound of the scale.
It causes performance deterioration and the failure.
73. Reset time
The reset time means the time needed for the differential pressure to decline to the reset pressure from theactivating pressure (i.e., the electrical contact is reset) when the differential pressure is sharply reduced
to zero. It is about three seconds at 20 Pa, and one second at more than 50 Pa for Manostar switches.
(This value is only for the instrument itself and does not include the effect of piping.) Therefore, a response
quicker than this value is not possible.

Ⅴ． ABOUT BUILT-IN MICRO SWITCH
1. Material of contacta) Gold alloy contacts ( “for low electrical load” )Stable contact performance is expected since oxidizing or sulphidizing film in not easily formed on gold
alloy contacts. However, they are not suitable for switching the load of high capacity. If used for suchapplications, the contacts are rapidly damaged due to sticking and blowout
The max. rating of our Manostar switch having gold alloy contact for micro lad is 100 mA, 30 V DC,
resistive load. Use the switches within the limits of the max. rating and the min, rating.
b) Silver or silver alloy contacts ( “for general electrical load” )In general, the contacts having silver as the main material, which is easy to form surface oxide film and,particularly, sulfide film, contacts work fine in the early stage, but thereafter, on low electrical load suchan 10 mA, 24 V DC the firm cannot break. It tends to occur contact failure by the firm.
When the current or voltage applied to the contact is high enough to break the oxide/ sulfide film, isbroken and the contact is kept good contact.

2. C ontact material and applicable mecanism for low voltage and low current circuit
The schematic diagram in the right
explains the proper range of load voltage
and current for which silver or gold alloy
contact is generally used when the contact
is used for opening or closing the low
voltage and low current circuit with a micro
switch. When referring to the diagram,keep the following points in mind.
The working range for each contact may
actually be dependeding on the kind of
micro switch, contact pressure, working
condition, environmental condition, andthe kind of load, and so on.
In general, the contact should be selectedbased on the required level of contact reliability.

8

Voltage（V）
DC

Silver

30

Gold alloycross point

15

5
0

1

5

10

50 100Current（mA）

3. Protection of contact of switch
・ Contact protection circuit is used to extend the service life of contact. It reduces generation of noise at
the time of switching on and off. It also minimizes carbide and nitric acid gas generated by arc. Use thiscircuit correctly, otherwise it will cause reverse effect, making the matter worse.
・ In case of using contact protection circuit, pay attention the operating time is possibility of delaying alittle. The following are typical examples of contact protection circuit.
a) Typical example of protective circuit

U

Example of circuit

P.S.

R
P.S.

I.L.

I.L.

C

I.L.

P.S.

I.L.

P.S.

Special remarks for application and selection

Varistor
methodThis method is intended not to apply voltage beyond limitof varistor to inbetween contacts. It delays a little time toreturn inductive load such as relay.
Select the most conformed rated model in terms of power
supply voltage and load capacity in selected article byvaristor maker.

C･R
methodIt delays a little time to activate or return inductive loadsuch as relay.
As for CR value, to contact current and contact voltage, theestimate value is C : 0.5 μ F / A, R : 1.0 Ω / V.
However, it differs according to the characteristics of load,
therefore, be sure to confirm to select by experiment.

Diode
methodThis method is intended to consume counter electromotive
force of inductive load by diode and avoid to apply highvoltage to inbetween the contacts.
This method makes the return time of inductive load
slower.Choose the diode rated current is more than load
current and counter withstand voltage more than 10 timesof power supply voltage.

Diode ＋
Zener diodemethodDiode method proves to be effective when the return time
takes too long for inductive load such as relay. When
you choose zener voltage of zener diode, choose base on
power supply voltage. Be careful with limitations having
this method. Because load is too big, larger capacity
zener diode is needed for reverse surge power.

P.S. : Power supply,  I.L. : Inductive loadb) Example of wrong protection circuit

P.S.

C

This is very effective to remove arc at the time of offcontact, but this is likely to run charged current tocondenser leading to contact sticking and short service
life at the time on-contact.

I.L.

Condenser method

P.S.

C

I.L.

This is very effective to remove arc at the time of offcontact, but this is likely to run short circuit current
accumulated in the condenser leading to contact sticking
on contacting.
This is likely to short service life at the time on-contact.

P.S. : Power supply,  I.L. : Inductive load
If the load is larger than the specified contact capacity, use a secondary relay. In general, the load voltage andthe corrent is too less to the life of contact is longer. However, this does not expect for a low electirical load.
Manostar switches cannot directly shut off the circuit of 250 V AC or more.

94. About measured gas and contact failurea) Corrosive gas
If the gas to be measured contains corrosive gases (nitric acid, hydrogen sulfide, sulfurous acid,ammonia, chlorine, and so on), they may cause electrical contact failure or corrosion of internalmechanism, which leads to malfunction of the switch. Do not use the switch for the gases containing
high humid air because in such gases, the arc generated by opening/ closing the contact produces nitricacid, and it may also cause electrical contact failure or malfunction of switches.
b) Silicone gas
If the gas to be measured contains silicon produced from silicon (contained in oil, grease, filling agent,and so on), the gas produced by arc, generates by opening/ closing the contact, accumulates on thecontact surface and causes contact failure. Take corrective measures such as the removal of the gas
source or arc suppression.
c) Dust and organic gas
The micro switch used in a Manostar switch is installed in the positive pressure measurement chamber.
The gas to be measured can easily flows into the chamber, thus, the composition of the gas largely
affects the formation of the film. In addition, the dust contained in the gas to be measured can adhere to
the contact surface and be changed into carbide caused the contact failure by the arc generated when
the contact is opened or closed. Therefore, pay attention to the measurement environment as well.
(Even with gold alloy contact, be careful about the dust.)
As the opening/ closing frequency of the contact increases, wear dust from the contact
increases. This wear dust accumulates between the contacts to increase the contact resistanceand causes the malfunction in the load circuit.
In particular, the surrounding where there exists continuous vibration and impact will be most
likely to cause contact failure due to worn powder.

!
CautionⅥ． LINE PART ACCESSORIES
Pulsating protector
In case of strong turbulent flow of medium air thatcauses abnormal movement of pointer and output
of transmitter, installing a pulsation protector
applicable pressure range one each on H side and Lside on the piping way between pressure sensor andthe instrument.
Product code
For vinyl or plastic tube
RS-VT4-02
RS-VT4-03
RS-VT4-04

Pulsating protector
φ 5.5

φ 5.5

75

Applicable range(max. value)
200 Pa or less300, 500, 1000Pa
2, 3, 5, 10kPa

Hex.14

Hex.12

Product code RS-VT4-□□

T joint39

φ7

Product code TVT4-4-4

Product code TVT4-6-4

10

18.5

2×φ7

39

2×φ5.518.5

3×φ5.5

18.5

39

φ5.5

Product code TVT6-4-6

Ⅶ． PERIODIC INSPECTION
Generally speaking, it is important not to exert external stress to keep life and reliability of the instrument for along time.
Proper use of this instrument will ensure its faultless service over many years without any necessity of periodic
lubrication.
However, it is recommended that it is subjected to periodic inspection (calibration) once a year.

Ⅷ． PRODUCT WARRANTY
Warranty Period
This product warranty is valid for one year from the date of delivery to a place specified by an ordering party who
has transacted directly with Yamamoto Electric Works Co., Ltd.
Coverage
If a product breaks down due to a reason for which we are responsible during the warranty period and you return
the product to us, we will either repair or replace the product free of charge.
This warranty does not cover:(1) U sage of the product under any inappropriate conditions or environment contrary to what is described in our
product catalog, specifications or manual.
Handling or usage of the product other than as described in our product catalog, specifications or manual.
(2) Breakdown due to a reason other than a fault within our product.
(3) Any product that has been modified or repaired by a party other than us.
(4) A ny breakdown due to a reason that was not foreseeable based on scientific and technical standards applied at
the time of shipment.
(5) Any breakdown due to a reason not attributable to us such as a natural calamity or other disaster.
These terms of warranty represent our entire liability with respect to the product, and we shall have no liability
for any other loss arising in connection with a breakdown of the product.
*This product warranty is only valid within Japan.
This document is a translation from the original Japanese version, and the original Japanese version has priority
over this translation.
Be sure to refer to the original Japanese for the details of this warranty.

<Prior notice>
The specifications and description of the product explained in this instruction manual may be subject tochange without prior notice because of modification and the like.

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