Nissan Tanaka
Nissan Tanaka 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
Purpose:
Indoor, tunnels,
Prevention of oxygen deficiency in tunnels and shafts.
Accessories:
Separated sensor box (10m),
Wall mounting bracket.
JKO-25MT3, JKO-25ML3
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 | ● | — |
※If you have any trouble with the installation location, please contact Ichinen Jico Co., Ltd.
Kouei is Distributor/Agent of Nissan Tanaka
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