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

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

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-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-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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