JIKCO JKO-25 Ver.3 Series Oxygen Monitor

Manufacturer: Nissan Tanaka
Model : JKO-25 Ver.3 Series : JKO-25S3, JKO-25SD3, JKO-25W3, JKO-25WD3, JKO-25L3, JKO-25LD3, JKO-25MT3, JKO-25ML3, JKO-25LJ3, JKO-25LJD3

Choose from 5 types according to your purpose. You can select the one that is most suitable for your usage environment. (Type D: Comes with AC adapter and wall mounting bracket)

JKO-25W3, JKO-25WD3

JKO-25 Ver.3 Series : JKO-25S3, JKO-25SD3, JKO-25W3, JKO-25WD3, JKO-25L3, JKO-25LD3, JKO-25MT3, JKO-25ML3, JKO-25LJ3, JKO-25LJD3

Purpose:
Indoor, tunnels,
Prevention of oxygen deficiency in tunnels and shafts.
Accessories:
Separated sensor box (10m),
Wall mounting bracket.

JKO-25MT3, JKO-25ML3

JKO-25 Ver.3 Series : JKO-25S3, JKO-25SD3, JKO-25W3, JKO-25WD3, JKO-25L3, JKO-25LD3, JKO-25MT3, JKO-25ML3, JKO-25LJ3, JKO-25LJD3

Purpose:
Maintenance of HOT (Home Oxygen Therapy) oxygen concentrators,
Residual oxygen measurement for nitrogen generation equipment.
Accessories:
MT Type / Bamboo Shoot Type Tube Fitting (for inner diameter 6φ),
ML Type / Elbow Type Tube Fitting (for inner diameter 4φ/outer diameter 6φ).

JKO-25S3, JKO-25SD3

Purpose: Oxygen measurement by stationary or portable means.

JKO-25L3, JKO-25LD3

Purpose:
Vertical hole concentration confirmation in manholes, tanks, wells, etc.
Accessories:
Stainless steel enclosure separated sensor (3m).

JKO-25LJ3, JKO-25LJD3

Purpose:
Oxygen measurement inside containers, oxygen measurement inside tubes,
Concentration confirmation of hospital gas outlets and artificial respirators (additional optional items required).
Accessories:
Separated sensor (coil cord approximately 1.75m).

Specifications

Specification	Description
Detection Gas	Combustible Gas
Measurement Principle	Catalytic Combustion
Measurement Range	0.0~100.0%
Resolution	0.1%
Measurement Accuracy	±0.5% (0.0~25.0%) ±3.0% (25.1% L.E.)
Operating Temperature Range	-10°C to +40°C
Operating Humidity Range	5~85% RH (Non-condensing)
Operating Pressure Range	Standard Pressure (1013hPa) ±10%
Response Speed	T90 within 20 seconds (20.9~100.0%)
Repeatability	Within 5 seconds (20.9→18.0%, when exposed to 10-11% oxygen)
Standards	Explosion-proof, RoHS
Alarm concentration set value	2 points can be set arbitrarily (initial value 18.0%)
Alarm function	Electronic buzzer (80dB), 2 flashing red LEDs
Alarm output	Relay no-voltage 1c contact Maximum allowable range: 1A 30VDC
Output Signal	DC 0-1V　0-100%O₂
Power supply	4 AA alkaline batteries External power supply specifications: AC adapter 5V DC/2.0A (Batteries for power outage compensation: 4 AA alkaline batteries)
Battery life	Approximately 1 year (when there is no alarm)
Average sensor life*	In the atmosphere: Approximately 3 years (varies depending on usage environment)
Dimensions/mass	145H×82W×38D(mm)/315(g) JKO-25S3
Accessories	Common to all models: AA alkaline batteries, external alarm output connector D type: AC adapter, wall bracket ・ W type: Wall bracket

JKO-25 Ver.3 & JKO-A Ver.3 specifications by type and accessories

Model	Seismic Sensor	Gas Sensor	Combustion Detection	Electrical Leakage Detection	Error Alarm	Operation Lamp	Monitoring System	Cable Length	External Output	AC Adapter
SD3	●	—	●	●	●	●	●	—	●	●
LD3	—	●	●	●	●	●	●	3m	●	●
LJD3	—	●	●	●	●	●	●	approx. 1.75m	●	●
WD3	—	●	●	●	●	●	●	10m	●	●
S3	●	—	●	●	●	●	●	—	●	—
MT3	●	—	●	●	●	●	●	—	●	—
ML3	●	—	●	●	●	●	●	—	●	—
L3	—	●	●	●	●	●	●	3m	●	—
LJ3	—	●	●	●	●	●	●	approx. 1.75m	●	—
W3	—	●	●	●	●	●	●	10m	●	—