RKI Instruments GD-K77D - 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