RKI Instruments GD-70D Series - Manual (Page 7)

1 Overview 1-3. Product specifications
- 7 - GD-70D
1-3. Product specifications
<Common Specifications>
Concentration
Display Character LCD (Digital and Bar Meter Display)
Suction Flow Rate 0.5L/min ±10%
Power Display POWER lamp on (green)
Displays Gas name display/Flow rate indicator/Mode display/Communication status
display/Pyrolyzer connection display
Gas Alarm Display First: ALM1 lamp on (Red)/Second: ALM2 lamp on (Red)
Gas Alarm
Activation Auto-reset
Gas Alarm Contact No-voltage contact 1a or 1b (2 step independent)
de-energized (energized at a time of alarm) or energized (de-energized at a
time of alarm)
Fault Alarm/Self
Diagnosis System abnormalities/Sensor abnormalities/Flow Rate
abnormalities/Communication abnormalities/Pyrolyzer abnormalities
Fault Alarm
Display FAULT lamp on (Yellow)/Detail display
Fault Alarm
Activation Auto-reset
Fault Alarm
Contact No-voltage contact 1a or 1b
de-energized (energized at a time of alarm) or energized (de-energized at a
time of alarm)
Contact Capacity 125 VAC - 0.25A/24 VDC - 0.5A (Resistant load)
Recommended
Contact Cable Cable of CVV, etc. (1.25sq) - max. 6-core
Functions White backlight/Alarm delay/Suppression/Zero follower/Sensitivity correction/
Flow control/Calibration history/Alarm trend history/Event history
Tube Connecting
Hole Rc1/4 (O.D Φ6-1t half-union for Teflon tube<PP>supplied)
Initial Clear Approx. 25 seconds
Structure Box type/Wall mounted type
External
Dimensions Approx. 70(W)x120(H)x145(D) mm (projection potions excluded)
Weight Approx. 0.9 kg
Outer Color Gas detector: grey
Front door: white
<Specifications for Each Model>
Model GD-70D GD-70D-NT
Transmission
System 3-wire type analog transmission
(Common Power Supply <Power,
Signal, Common>)
or 2-wire type analog transmission 2-wire type DC power-line
communication
Transmission
Specification 4 - 20 mA DC (no-insulation/load
resistance under 300Ω) DC power-line communication
system
Recommended
Transmission
Cable Shielded cable of CVVS, etc. (1.25sq)
3-core or 2-core Shielded twisted-pair cable
(1.25sq) of KPEV-S, etc. - 1P
Recommended
Power Cable Cable of CVV, etc.(1.25sq) - 2-core
(Those for 3-wire type are common with
the transmission cable.) (Common with the transmission
cable)
Power Supply 24VDC ±10% 24VDC ±10%
(Dedicated line by blocking filter)