Nissan Tanaka
Nissan Tanaka JKO-A Ver.3 Series Oxygen Monitor
Manufacturer: Nissan Tanaka
Model : JKO-A Ver.3 Series : JKO-AW3, JKO-AWD3, JKO-AMT3, JKO-AML3, JKO-AS3, JKO-ASD3, JKO-AL3, JKO-ALD3, JKO-ALJ3, JKO-ALJD3
JKO-AW3, JKO-AWD3
Applications:
Indoor, tunnels,
Prevention of oxygen deficiency in mineshafts
Accessories:
Separate sensor box
Wall-mounted bracket
JKO-AMT3, JKO-AML3
Applications: HOT (Home Oxygen Therapy) oxygen concentrator maintenance, residual oxygen measurement for nitrogen generation systems.
Accessories: MT type/bamboo-shaped tube fittings (for inner diameter 6φ), ML type/elbow-shaped tube fittings (for inner diameter 4φ/outer diameter 6φ).
JKO-AS3, JKO-ASD3
Applications: For stationary or portable oxygen measurement.
JKO-AL3, JKO-ALD3
Applications: For verifying the concentration in vertical holes such as manholes, tanks, wells, etc.
Accessories: Stainless housing separate sensor (3m).
JKO-ALJ3, JKO-ALJD3
Applications:
Oxygen measurement inside containers, oxygen measurement inside tubes
Verification of hospital gas outlets and ventilator concentrations
(Use of separate optional items required)
Accessories: Separate sensor (coiled cord approximately 1.75m)
Specification
| Specification | Description |
|---|---|
| Detected Gas | Oxygen |
| Detection Principle | Galvanic Cell Type |
| 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~+40°C |
| Operating Humidity Range | 5~95%RH (Non-condensing) |
| Operating Pressure Range | 811~1100[hPa] |
| Response Speed | T90 within 20 seconds (20.9→100.0%), (20.9→10.5%) |
| Alarm Delay | Within 5 seconds (20.9→18.0%, during 10~11% oxygen exposure) |
| Standards | Low Voltage Directive, RoHS Directive, JIS T8201 |
| Alarm Concentration Set Value | Two points can be set arbitrarily (default values ALM1: 19.5%, ALM2: 18.0%) |
| Alarm Function | Electronic buzzer (80dB), flashing red LED x2 |
| Alarm Output | Relay non-voltage 1c contact, maximum permissible range: DC30V 1A MAX |
| Analog Output | DC 0-1V, 0-100% O₂ *2 |
| Power Supply | Four AA alkaline batteries External power supply specification: AC adapter 5V DC/2.0A (for power outage compensation, four AA alkaline batteries) |
| Battery Life | About 1 year (when no analog output or alarm is generated) |
| Average Sensor Lifetime*1 | In the atmosphere: about 3 years (subject to change depending on the usage environment) |
| Dimensions/Weight | 145H×82W×38D (mm) / about 300 (g) *3 Model JKO-AS3 |
| Accessories | Common to all models: AA alkaline batteries, external alarm output connector Type D: AC adapter, wall-mounted bracket ・ Type W: wall-mounted bracket |
※1 Sensor life is not guaranteed.
※2 Current output (4-20mA) can be changed with an option (model suffix -AA).
※3 Includes the weight of the battery.
A Series Original Functions
❖ Auto Span Adjustment (Configurable)
*Even during auto span adjustment setting, manual span adjustment is possible. Previous oxygen concentrators required regular span adjustments (a one-push with the CAL or ADJ button in normal air). The auto span function prevents forgetting to adjust the span.
❖ Equipped with a Barometric Sensor
Previous oxygen concentrators and oxygen detectors were affected by atmospheric pressure, causing false alarms during typhoons or similar conditions. The “A” series solves this problem by including a barometric sensor. There is no impact from atmospheric pressure within the specification range.
❖ Built-in Maintenance Timer
This function reminds you to maintain the oxygen concentrator once a year, a task that is easy to forget. Gas detectors require maintenance and regular span adjustments at least once a year.
❖ Analog Output 4-20mA Compatible (Optional)
By adding “-AA” to the end of the product model number at the time of order, customization to analog output 4-20mA is possible.
❖ Sound ON/OFF Function
The sound ON/OFF function, which seems obvious but wasn’t available before, allows the use of contacts without emitting an alarm. It also allows you to turn off the start-up sound and button push sound, making it usable in places where noise is not permissible.
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