PC3E-0421

Specifications
Model

FI-8000

Measuring principle

Optical interferometric typeMeasurement target gases

See annexed table

Reading accuracy

Indicated value ±3% (under identical conditions)*

Type

Type P-□□-□□

Type A-□□-□□

Sampling method

Automatic suction by built-in pump

Manual suction by handy aspirator

Self-diagnosis function

Low battery voltage, low UV intensity, low contrast, abnormal pressure, abnormal temperature

Display

LCD digital display (7-segment numeric display + symbol + 20-segment character display x 2 lines)

Displays

Measurement target gas name, measurement target gas concentration, measurement unit, battery level

Power supply

Dry battery unit (AA alkaline dry battery × 3) or lithium-ion battery unit
Dry battery unit: 12 hours or more
Dry battery unit: 16 hours or more
(For a new dry battery, at 25˚C, with no lighting)(For a new dry battery, at 25˚C, with no lighting)
Lithium-ion battery unit: 18 hours or more
Lithium-ion battery unit: 24 hours or more
(For a fully charged battery, at 25˚C, with no lighting)(For a fully charged battery, at 25˚C, with no lighting)Continuous
operating time

For accurate measurement of the concentrationof a variety of types of gases

Optical Interferometric Gas Monitor

Explosion-proofing

Intrinsically safe explosion-proof construction
IECEx (Ex ia IIC T4 Ga), ATEX/UKEX (II1G Ex ia IIC T4 Ga), Japan Ex (Ex ia IIC T4)

Protection class

Compliant with IP67

Certification

CE / UKCA marking

External dimensions

Approx. 154(W) × 127(H) × 81(D)mm

Mass

Approx. 1.1 kg (including the dry battery unit) / Approx. 1.2 kg (including the lithium-ion battery unit)

Usage temperature / humidity range-20˚C to +50˚C (no sudden changes), 95% RH or less (non-condensing)

Data logger function

Maximum number of recorded items: 256

Functions

Data logger, atmospheric pressure correction, temperature correction

Model FI-8000
IECEx
ATEX
CE marking

Communication method: IrDA

* The reading accuracy varies depending on the measurement target gas.

Accessories

Outer appearance

Select one

Accessories

Handy aspirator(Type A only)
AA alkaline
dry battery ×3

Alkaline
dry battery unit

Gas sampling
hose (1 m)

Shoulder strap

Charging AC
adapter

Absorbing tube fixing belt*
Absorbingtube andrelay tube* * Anesthetic gas specification only

Lithium-ion
battery unit

Up to 8 types of gases can be measured with 1 unit

Optional
accessories

You can combine up to 8 types of your preferred gases.
You can also add or change measurement target gases after purchase.
▪Alkaline dry battery unit

Continuous measurement mode / intermittent measurement mode supported▪AA alkaline dry battery

In addition to the usual continuous measurement mode, an intermittent measurementmode is available in which you can set an interval, so that you can record the gas
concentration value and the time at intervals. (The intermittent measurementmode is only available with the automatic suction specification.)▪Lithium-ion battery unit
Data logger
management program▪Charging AC adapter

Two measurement methods
The product has a lineup of an automatic suction typeusing the built-in pump and a manual suction typewhich enables faster suction using the handy aspirator.

Protection class IP67 compliant
IP67 compliance provides reassurance during outdoor work.

2 -7-6 Azusawa, Itabashi-ku, Tokyo 174 - 8744, Japan

Phone :
Telefax :E-mail :Web site :Easy-to-view, large LCD screen+81-3-3966-1113+81-3-3558-9110
intdept@rikenkeiki.co.jp
https://www.rikenkeiki.co.jp/english

With the large numeral and character display, you can check the gas
concentration and perform operations smoothly.

Intrinsically safe explosion-proof structure
IECEx: Ex ia IIC T4 Ga
ATEX: II 1 G Ex ia IIC T4 Ga* The contents described in this catalog are
subject to change without notice according
to the performance improvement.

PC3E-0420-230900 S

Manual suction by
handy aspirator

Measurement Target Gas List

The History of the Optical Interferometric Gas Monitor

Chamber length

Products certified as analytical instrument and scientific instrument heritage items

Measurementtarget gas
Acetylene
Isobutane
Ethylene(developed in 1930)

Riken type 18 gas detector(developed in 1952)

FI‐21(developed in 2001)

In the early Showa era, accidental explosions on oil tankers occurred
frequently. To prevent the accidents,a gas concentration detector was developed
based on the principle of optical interference developed at Riken, and Riken Keiki
was established for the purpose of productizing the detector. The productized
detector came to be widely used in coal mines and for safety supervision.
The Riken type 3 gas detector was certified as an “analytical instrument andscientific instrument heritage” item by the Japan Analytical Instruments
Manufacturers' Association (JAIMA) and the Japan Scientific Instruments
Association (JSIA), as it was a valuable device that contributed to the lives ofJapanese people.

FI‐8000(developed in 2014)
Digital display
Automatic analysis
IP67

Reduced weight
Data logger function
Simple operation(Chamber length: 24 mm)

Fumigation gas specification(Chamber length: 48 mm)(8 types of gases
detectable as standard)Air

0 - 100 vol%Nitrogen0 - 100 vol%Air

0 - 100 vol%0 - 100 vol%0 - 100 vol%ChlorineAir0 - 100 vol%

Xenon

Air

0 - 100 vol%Dimethyl ether

Air

Isoflorene
Sevoflurane
Desflurane
Halothane0 - 100 vol%24 mmMeasurement
Base gasrange

Sulfuryl fluorideAir

0 - 200 g/m 3

Propylene oxideAir0 - 10 vol%Air

0 - 10 vol%Air

0 - 200 g/m 3

Oxygen0 - 10 vol%Air

0 - 5 vol%Air

0 - 20 vol%Methyl iodideAir0 - 200 g/m 3

Oxygen0 - 20 vol%PhosphineAir

0 - 50 g/m 3

Air

0 - 6 vol%Hydrogen cyanideAir

0 - 200 g/m 3

0 - 6 vol%AcetoneAir

0 - 100 %LEL

Air

0 - 100 %LEL

OxygenAir

0 - 100 vol%Acetylene

Nitrogen0 - 50 vol%Carbon dioxideAir0 - 100 vol%EthyleneAir

0 - 50 vol%Normal butaneAir

0 - 100 vol%PropaneAir

0 - 100 vol%Freon 410A

Nitrogen0 - 100 vol%Freon 22

Air

0 - 100 vol%Methyl bromideAir0 - 100 vol%Air

0 - 100 vol%Air

0 - 99.9%up

Nitrogen0 - 100 vol%—0 - 134.25 MJ/m 3
Gross 0˚C—

0 - 123.75 MJ/m 3
Net 0˚C—

0 - 101.35 MJ/m
Gross 0˚C—

0 - 93.15 MJ/m
Net 0˚C

A: Manual suction by handy
aspirator
P: Automatic suction bybuilt-in pump

05: 5 mm
24: 24 mm
48: 48 mm

00: Anesthetic gas
02: Fumigation gas
99: Customized

0 - 100 %LEL

Nitrogen0 - 100 vol%Isopropyl alcoholAir

0 - 100 %LEL

Air

0 - 100 vol%Carbon monoxideAir0 - 100 vol%Nitrogen0 - 100 vol%Ethyl alcoholAir

0 - 100 %LEL

Air

0 - 100 vol%Ethylbenzene

Nitrogen0 - 100 %LEL

Nitrogen0 - 100 vol%Air

0 - 100 %LEL

Argon

0 - 100 vol%Air

0 - 20 vol%Air

0 - 100 vol%Nitrogen0 - 100 %LEL

Nitrogen0 - 100 vol%Air

0 - 100 %LEL

Argon

0 - 100 vol%Air

0 - 100 %LEL

Nitrogen0 - 100 %LEL

Air

0 - 100 %LEL

Air

0 - 100 %LEL

Nitrogen0 - 100 vol%Argon

0 - 100 vol%Air

0 - 100 %LEL

Nitrogen0 - 100 %LEL

Air

0 - 100 %LEL

Air

0 - 50 vol%Nitrogen0 - 100 %LEL

Argon

0 - 100 %LEL

Argon

0 - 50 vol%Air

0 - 100 %LEL

Nitrogen0 - 100 %LEL

Argon

0 - 100 vol%TetrahydrofuranAir

0 - 100 %LEL

TetrafluoropropeneAir

0 - 100 %LEL

Air

0 - 100 %LEL

Nitrogen0 - 100 %LEL

Nitrogen0 - 100 %LEL

Air

0 - 100 %LEL

Air

0 - 10 vol%Nitrogen0 - 100 %LEL

Air

0 - 100 %LEL

Air

0 - 100 %LEL

Air

0 - 50 vol%Nitrogen0 - 100 %LEL

Argon

0 - 100 %LEL

Heavy hydrogen

HydrogenCarbon dioxide

3

Neon

Air

PropaneMethaneNatural gas or
natural gas + LPG

0 - 100 vol%Ethylene
Ethylene chloride
XyleneAir

0 - 20 vol%Ethyl acetateAir0 - 100 vol%Butyl acetate

Nitrogen0 - 100 vol%Argon

0 - 100 vol%Air

0 - 100 vol%Dioxolane

Nitrogen0 - 100 vol%Dichloroethane—

25 - 50 MJ/m 3
Gross 0˚C—

22 - 45 MJ/m 3
Net 0˚CIn oxygen
Chamber length: 24 mm

OxygenHydrogenIsoflorene(vol%)

TolueneNormal butane

Enflurane(vol%)

Automatic Chamber length: Customized
24mmspecification
suction type

FI-8000 TYPE P - 24 - 99

PropaneMethanol

MethaneIn airChamber length: 48 mm
Methyliodide(g/m3)

Toluene(%LEL)

Methyl ethyl
ketone(%LEL)

Ethyl acetate(%LEL)

We want to measure 5 types of gases via manual suction using the handy aspirator!

Regarding the details of themeasurement target gases,
refer to “Measurement Target Gas List.”

0 - 10 vol%NitrogenDifluoromethane

We want to measure 3 types of gases via automatic suction using the built-in pump!

Measurement target gas

0 - 100 %LEL

Air

0 - 100 vol%Isobutane

Nitrogen

Methylbromide(g/m3)Air

OxygenHalothane(vol%)

FI- 8000TYPE □ - □□ - □□0 - 100 vol%

Ozone

Selection Examples

For the FI-8000 optical interferometric gas monitor, select the suction method and measurement target gas to match your intended use.
The selected specification is reflected in the model name as follows.

0 - 100 vol%Nitrogen0 - 10 vol%StyreneFI-8000 ModelAir

0 - 10 vol%Anesthetic gas specification(gases detectable as standard)

Regarding the gases detectable as standard in the anesthetic / fumigation gas specification, refer to “Measurement Target
Gas List.” For the customized specification, you can select up to 8 types of measurement target gases. Select from among
identical chamber lengths (the “Measurement Target Gas List” column). In addition, for all the specifications, measurementtarget gases can be added or changed after purchase.

Chamber length

AmmoniaAir(7 types of gases
detectable as standard)

Suction method

Methyl bromide

OxygenEnflurane

HeliumRegarding gases notincluded in the list,
please make aseparate inquiry with us.

Measurementrange

0 - 8 vol%Nitrous oxide

Customized specification

Base gas

0 - 8 vol%0 - 100 vol%

3

48 mm

Air

0 - 100 vol%Propane-air

Chamber length
Measurementtarget gas

OxygenNitrogen

Butane-air(Chamber length: one of 5 / 24 / 48 mm)

Measurementtarget gas

Carbon dioxide

Hydrogen

3 Specifications in Total

Anesthetic gas specification

Base gasAir

Sulfurhexafluoride

Select the measurementtarget gas from blank!

Chamber length

Measurement
range

NitrogenVinyl chloride

Riken type 3 gas detector

5 mm

Manual Chamber length: Customized
suction type
48 mm
specification

FI-8000 TYPE A - 48 - 99

Methyl isobutyl ketoneAir0 - 100 %LEL

Methyl isopropyl ketoneAir0 - 100 %LEL

Methyl ethyl ketoneAir0 - 100 %LEL

Fumigation gas specification(gases detectable as standard)Measurement Target Gas List

The History of the Optical Interferometric Gas Monitor

Chamber length

Products certified as analytical instrument and scientific instrument heritage items

Measurementtarget gas
Acetylene
Isobutane
Ethylene(developed in 1930)

Riken type 18 gas detector(developed in 1952)

FI‐21(developed in 2001)

In the early Showa era, accidental explosions on oil tankers occurred
frequently. To prevent the accidents,a gas concentration detector was developed
based on the principle of optical interference developed at Riken, and Riken Keiki
was established for the purpose of productizing the detector. The productized
detector came to be widely used in coal mines and for safety supervision.
The Riken type 3 gas detector was certified as an “analytical instrument andscientific instrument heritage” item by the Japan Analytical Instruments
Manufacturers' Association (JAIMA) and the Japan Scientific Instruments
Association (JSIA), as it was a valuable device that contributed to the lives ofJapanese people.

FI‐8000(developed in 2014)
Digital display
Automatic analysis
IP67

Reduced weight
Data logger function
Simple operation(Chamber length: 24 mm)

Fumigation gas specification(Chamber length: 48 mm)(8 types of gases
detectable as standard)Air

0 - 100 vol%Nitrogen0 - 100 vol%Air

0 - 100 vol%0 - 100 vol%0 - 100 vol%ChlorineAir0 - 100 vol%

Xenon

Air

0 - 100 vol%Dimethyl ether

Air

Isoflurane
Sevoflurane
Desflurane
Halothane0 - 100 vol%24 mmMeasurement
Base gasrange

Sulfuryl fluorideAir

0 - 200 g/m 3

Propylene oxideAir0 - 10 vol%Air

0 - 10 vol%Air

0 - 200 g/m 3

Oxygen0 - 10 vol%Air

0 - 5 vol%Air

0 - 20 vol%Methyl iodideAir0 - 200 g/m 3

Oxygen0 - 20 vol%PhosphineAir

0 - 50 g/m 3

Air

0 - 6 vol%Hydrogen cyanideAir

0 - 200 g/m 3

0 - 6 vol%AcetoneAir

0 - 100 %LEL

Air

0 - 100 %LEL

OxygenAir

0 - 100 vol%Acetylene

Nitrogen0 - 50 vol%Carbon dioxideAir0 - 100 vol%EthyleneAir

0 - 50 vol%Normal butaneAir

0 - 100 vol%PropaneAir

0 - 100 vol%Freon 410A

Nitrogen0 - 100 vol%Freon 22

Air

0 - 100 vol%Methyl bromideAir0 - 100 vol%Air

0 - 100 vol%Air

0 - 99.9%up

Nitrogen0 - 100 vol%—0 - 134.25 MJ/m 3
Gross 0˚C—

0 - 123.75 MJ/m 3
Net 0˚C—

0 - 101.35 MJ/m
Gross 0˚C—

0 - 93.15 MJ/m
Net 0˚C

A: Manual suction by handy
aspirator
P: Automatic suction bybuilt-in pump

05: 5 mm
24: 24 mm
48: 48 mm

00: Anesthetic gas
02: Fumigation gas
99: Customized

0 - 100 %LEL

Nitrogen0 - 100 vol%Isopropyl alcoholAir

0 - 100 %LEL

Air

0 - 100 vol%Carbon monoxideAir0 - 100 vol%Nitrogen0 - 100 vol%Ethyl alcoholAir

0 - 100 %LEL

Air

0 - 100 vol%Ethylbenzene

Nitrogen0 - 100 %LEL

Nitrogen0 - 100 vol%Air

0 - 100 %LEL

Argon

0 - 100 vol%Air

0 - 20 vol%Air

0 - 100 vol%Nitrogen0 - 100 %LEL

Nitrogen0 - 100 vol%Air

0 - 100 %LEL

Argon

0 - 100 vol%Air

0 - 100 %LEL

Nitrogen0 - 100 %LEL

Air

0 - 100 %LEL

Air

0 - 100 %LEL

Nitrogen0 - 100 vol%Argon

0 - 100 vol%Air

0 - 100 %LEL

Nitrogen0 - 100 %LEL

Air

0 - 100 %LEL

Air

0 - 50 vol%Nitrogen0 - 100 %LEL

Argon

0 - 100 %LEL

Argon

0 - 50 vol%Air

0 - 100 %LEL

Nitrogen0 - 100 %LEL

Argon

0 - 100 vol%TetrahydrofuranAir

0 - 100 %LEL

TetrafluoropropeneAir

0 - 100 %LEL

Air

0 - 100 %LEL

Nitrogen0 - 100 %LEL

Nitrogen0 - 100 %LEL

Air

0 - 100 %LEL

Air

0 - 10 vol%Nitrogen0 - 100 %LEL

Air

0 - 100 %LEL

Air

0 - 100 %LEL

Air

0 - 50 vol%Nitrogen0 - 100 %LEL

Argon

0 - 100 %LEL

Heavy hydrogen

HydrogenCarbon dioxide

3

Neon

Air

PropaneMethaneNatural gas or
natural gas + LPG

0 - 100 vol%Ethylene
Ethylene chloride
XyleneAir

0 - 20 vol%Ethyl acetateAir0 - 100 vol%Butyl acetate

Nitrogen0 - 100 vol%Argon

0 - 100 vol%Air

0 - 100 vol%Dioxolane

Nitrogen0 - 100 vol%Dichloroethane—

25 - 50 MJ/m 3
Gross 0˚C—

22 - 45 MJ/m 3
Net 0˚CIn oxygen
Chamber length: 24 mm

OxygenHydrogenIsoflurane(vol%)

TolueneNormal butane

Enflurane(vol%)

Automatic Chamber length: Customized
24mmspecification
suction type

FI-8000 TYPE P - 24 - 99

PropaneMethanol

MethaneIn airChamber length: 48 mm
Methyliodide(g/m3)

Toluene(%LEL)

Methyl ethyl
ketone(%LEL)

Ethyl acetate(%LEL)

We want to measure 5 types of gases via manual suction using the handy aspirator!

Regarding the details of themeasurement target gases,
refer to “Measurement Target Gas List.”

0 - 10 vol%NitrogenDifluoromethane

We want to measure 3 types of gases via automatic suction using the built-in pump!

Measurement target gas

0 - 100 %LEL

Air

0 - 100 vol%Isobutane

Nitrogen

Methylbromide(g/m3)Air

OxygenHalothane(vol%)

FI- 8000TYPE □ - □□ - □□0 - 100 vol%

Ozone

Selection Examples

For the FI-8000 optical interferometric gas monitor, select the suction method and measurement target gas to match your intended use.
The selected specification is reflected in the model name as follows.

0 - 100 vol%Nitrogen0 - 10 vol%StyreneFI-8000 ModelAir

0 - 10 vol%Anesthetic gas specification(gases detectable as standard)

Regarding the gases detectable as standard in the anesthetic / fumigation gas specification, refer to “Measurement Target
Gas List.” For the customized specification, you can select up to 8 types of measurement target gases. Select from among
identical chamber lengths (the “Measurement Target Gas List” column). In addition, for all the specifications, measurementtarget gases can be added or changed after purchase.

Chamber length

AmmoniaAir(7 types of gases
detectable as standard)

Suction method

Methyl bromide

OxygenEnflurane

HeliumRegarding gases notincluded in the list,
please make aseparate inquiry with us.

Measurementrange

0 - 8 vol%Nitrous oxide

Customized specification

Base gas

0 - 8 vol%0 - 100 vol%

3

48 mm

Air

0 - 100 vol%Propane-air

Chamber length
Measurementtarget gas

OxygenNitrogen

Butane-air(Chamber length: one of 5 / 24 / 48 mm)

Measurementtarget gas

Carbon dioxide

Hydrogen

3 Specifications in Total

Anesthetic gas specification

Base gasAir

Sulfurhexafluoride

Select the measurementtarget gas from blank!

Chamber length

Measurement
range

NitrogenVinyl chloride

Riken type 3 gas detector

5 mm

Manual Chamber length: Customized
suction type
48 mm
specification

FI-8000 TYPE A - 48 - 99

Methyl isobutyl ketoneAir0 - 100 %LEL

Methyl isopropyl ketoneAir0 - 100 %LEL

Methyl ethyl ketoneAir0 - 100 %LEL

Fumigation gas specification(gases detectable as standard)

PC3E-0420

Specifications
Model

FI-8000

Measuring principle

Optical interferometric typeMeasurement target gases

See annexed table

Reading accuracy

Indicated value ±3% (under identical conditions)*

Type

Type P-□□-□□

Type A-□□-□□

Sampling method

Automatic suction by built-in pump

Manual suction by handy aspirator

Self-diagnosis function

Low battery voltage, low UV intensity, low contrast, abnormal pressure, abnormal temperature

Display

LCD digital display (7-segment numeric display + symbol + 20-segment character display x 2 lines)

Displays

Measurement target gas name, measurement target gas concentration, measurement unit, battery level

Power supply

Dry battery unit (AA alkaline dry battery × 3) or lithium-ion battery unit
Dry battery unit: 12 hours or more
Dry battery unit: 16 hours or more
(For a new dry battery, at 25˚C, with no lighting)(For a new dry battery, at 25˚C, with no lighting)
Lithium-ion battery unit: 18 hours or more
Lithium-ion battery unit: 24 hours or more
(For a fully charged battery, at 25˚C, with no lighting)(For a fully charged battery, at 25˚C, with no lighting)Continuous
operating time

For accurate measurement of the concentrationof a variety of types of gases

Optical Interferometric Gas Monitor

Explosion-proofing

Intrinsically safe explosion-proof construction
IECEx (Ex ia IIC T4 Ga), ATEX (II 1 G Ex ia IIC T4 Ga), Japan Ex (Ex ia IIC T4)

Protection class

Compliant with IP67

Certification

CE marking

External dimensions

Approx. 154(W) × 127(H) × 81(D)mm

Mass

Approx. 1.1 kg (including the dry battery unit) / Approx. 1.2 kg (including the lithium-ion battery unit)

Usage temperature / humidity range-20˚C to +50˚C (no sudden changes), 95% RH or less (non-condensing)

Data logger function

Maximum number of recorded items: 256

Functions

Data logger, atmospheric pressure correction, temperature correction

Model FI-8000
IECEx
ATEX
UKEX
CE/UKCA marking

Communication method: IrDA

* The reading accuracy varies depending on the measurement target gas.

Accessories

Outer appearance

Select one

Accessories

Handy aspirator(Type A only)
AA alkaline
dry battery ×3

Alkaline
dry battery unit

Gas sampling
hose (1 m)

Shoulder strap

Charging AC
adapter

Absorbing tube fixing belt*
Absorbingtube andrelay tube* * Anesthetic gas specification only

Lithium-ion
battery unit

Up to 8 types of gases can be measured with 1 unit

Optional
accessories

You can combine up to 8 types of your preferred gases.
You can also add or change measurement target gases after purchase.
▪Alkaline dry battery unit

Continuous measurement mode / intermittent measurement mode supported▪AA alkaline dry battery

In addition to the usual continuous measurement mode, an intermittent measurementmode is available in which you can set an interval, so that you can record the gas
concentration value and the time at intervals. (The intermittent measurementmode is only available with the automatic suction specification.)▪Lithium-ion battery unit
Data logger
management program▪Charging AC adapter

Two measurement methods
The product has a lineup of an automatic suction typeusing the built-in pump and a manual suction typewhich enables faster suction using the handy aspirator.

Protection class IP67 compliant
IP67 compliance provides reassurance during outdoor work.

2 -7-6 Azusawa, Itabashi-ku, Tokyo 174 - 8744, Japan

Phone :
Telefax :E-mail :Web site :Easy-to-view, large LCD screen+81-3-3966-1113+81-3-3558-9110
intdept@rikenkeiki.co.jp
https://www.rikenkeiki.co.jp/english

With the large numeral and character display, you can check the gas
concentration and perform operations smoothly.

Intrinsically safe explosion-proof structure
IECEx: Ex ia IIC T4 Ga
ATEX/UKEX: II1G Ex ia IIC T4 Ga* The contents described in this catalog are
subject to change without notice according
to the performance improvement.

PC3E-0421-240300 S

Manual suction by
handy aspirator