Specifications – RKI Instruments GD-K77D User Manual
Page 8

3 • Specifications
Model GD-K77D
Operator’s Manual
Specifications
Specifications subject to change without notice.
Accessories: Dust filter
WARNING:
When using the GD-K77D, you must follow the instructions and warnings
in this manual to assure proper and safe operation of the GD-K77D and to
minimize the risk of personal injury. Be sure to maintain and periodically
calibrate the GD-K77D as described in this manual.
Table 1: Specifications for the Model KD-K77D
Model
GD-K77D
GD-K77D-NT
Relay output for remote alarm
Electrochemical cell
Relay output for remote alarm
Refer to the RKI Instrument, Inc. list of detectable gasses
Target gas and detection range
See RKI List of Detectable Gases
Accuracy
± 10% of reading or ± 5% of full scale (whichever is greater)
Signal output
(4-20 mA)
Two-wire digital signal
Display
Digital LED display, 4 digit
Alarms
Two alarm levels: alarm 1 (yellow LED),
alarm 2 (red LED), trouble
Relay output for remote alarm
Dry contact for each alarm1, alarm2, and trouble alarm
Self-diagnostic functions
Trouble, low flow, system failure, communication error
Temperature and humidity ranges
0-40 C, 30-85% relative humidity
Power requirements
24 VDC+/- 10%, approximately 10W
Recommended cable (see also RKI
wiring chart)
18 gage shielded cable
Shielded twisted pair cable (18
gage)
Dimensions and weight
2.8"(W) x 6.7"(H) x 6.0"(D), 4.4lb.
Recommended tubing
4 mm x 6 mm PTFE (Teflon tubing, RKI part # 06-1272RK)
Fuse
5.2 mm diameter x 20 mm length; 2A, 250V