Riken Keiki GD-84 State of the Art multi gas sample drawing fixed gas detector unit
The Riken Keiki GD-84 represents a major advance in fixed gas detection. It features the ability to sample 4 seperate gases from 4 sources all in one compact wall mounted unit. The advanced new F sensor technology means a wide range of Toxic and combustible gases ( including hydrogen ) as well as Oxygen is available. The GD-84 is ideal in fixed systems when multiple gases require detection and space is at a premium.
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Model |
GD-84D-EX |
GD-84D-EX-EC |
GD-84D-EX-EA |
GD-84D-EX-EA-EC |
GD-84D-EX-ET |
GD-84D-EX-ET-EC |
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Detection principle |
Electrochemical Semiconductor New ceramic Hot-wire semiconductor |
Electrochemical |
Electrochemical Semiconductor New ceramic Hot-wire semiconductor |
Electrochemical |
Electrochemical Semiconductor New ceramic Hot-wire semiconductor |
Electrochemical |
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Gas |
Toxic gas Combustible gas |
Toxic gas |
Toxic gas Combustible gas |
Toxic gas |
Toxic gas Combustible gas |
Toxic gas |
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Display |
Full dot display (gas name, flow rate, mode, communication status, gas concentration, and bar meter) |
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Detection method |
Pump suction method |
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Suction flow |
Approx.0.6 L/min |
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Power indication |
POWER lamp on(green) |
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Alarm accuracy (under an identical condition) |
Less than ±30%(against alarm preset point) |
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Alarm-delay time (under an identical condition) |
Less than 60sec (by providing the gas 1.6 times the alarm setpoint) (excluding delay in the tube and in the communication) |
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Gas alarm type |
Two-level alarm(H-HH or H-L or L-LL) |
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Gas alarm indication |
1st：ALM1 lamp on(red) 2nd：ALM2 lamp on(red) |
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Gas alarm action |
Non latching (auto-reset) or latching |
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Gas alarm contact |
No-voltage contact 1a or 1b (2 step independent) De-energized (energized at an alarm state) or energized (de-energized at an alarm state) |
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Trouble alarm・Self diagnosis |
System abnormalities/sensor abnormalities/flow rate/abnormalities/communication abnormalities/FAN disconnection abnormalities/temperature rise abnormalities/ /sensor life diagnosis |
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Trouble alarm indication |
FAULT lamp on(yellow)/detail display |
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Trouble alarm action |
Non latching (auto-reset) or latching |
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Trouble alarm contact |
No-voltage contact 1a or 1b De-energized (energized at an alarm) or energized (de-energized at an alarm) |
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Contact capacity |
24 VDC, 0.5 A (resistance load) |
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Contact cable |
Cable of CVV, etc. (1.25 mm2) - max. 6-core |
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Output |
Analog transmission: 2-wire type analog transmission (DC4-20mA) |
Digital transmission: Ethernet(10BASE-T/100BASE-TX) (DC4-20mA) |
Digital transmission: Ethernet(10BASE-T/100BASE-TX) |
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Output cable |
Cable of CVV, etc. (1.25 mm2) - max. 8-core |
Digital transmission: Ethernet cable (category 5 or higher) |
Digital transmission: Ethernet cable (category 5 or higher) |
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Various functions |
White backlight/alarm delay/suppress/zero tracking/sensitivity compensation/flow control/calibration history/alarm trend history/event history |
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Power cable |
Cable of CVV, etc. (1.25mm2) - 2-core |
Cable of CVV, etc. (1.25mm2) - 2-core |
(common with the digital transmission cable when PoE connection is used） |
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Power supply |
DC24 V±10 % |
DC24 V±10 % or PoE connection |
PoE connection |
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Power consumption |
DC24 V： Approx.8 W(MAX approx.14 W) |
DC24 V： Approx.2.5 W(Max Approx.7 W) |
DC24 V：Approx.9 W(Max Approx. 15 W) |
DC24 V：Approx.3 W(Max approx. 8 W) |
PoE： Approx.9 W(Max approx.11 W) |
PoE： Approx.3.5 W(Max approx.4.5 W) |
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Piping port |
Rc1/4(O.Dφ6-1t・with half-union |
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Initial clear |
Approx.25sec |
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Operating temperature |
-10 - 40℃(at a constant condition) |
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Operating humidity |
20 - 90 %RH(non-condensing) |
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Structure |
Wall mounted type |
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Outer dimension |
Approx.150(W)×190(H)×146(D) mm(projection portions excluded) |
Approx.150(W)×183(H)×140(D) mm(projection portions excluded) |
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Weight |
Approx.1.9 kg |
Approx. 1.4 kg |
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Color |
Body：gray Front door：white |
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