Manual

Model GD-K7D2 (24 VDC) Sample Draw Transmitter • 1
Overview
This manual describes the 24 VDC version of the Model GD-K7D2 sample draw 4 - 20 mA
transmitter detector head. This manual also describes how to install, start up, maintain,
and calibrate the GD-K7D2 when it is used with a gas monitoring controller. A parts list at
the end of this manual lists replacement parts and accessories for the GD-K7D2.
Specifications
Table 1 lists specifications for the 24 VDC version of the GD-K7D2.
WARNING: When using the GD-K7D2, you must follow the instructions and warnings
in this manual to assure proper and safe operation of the GD-K7D2 and to
minimize the risk of personal injury. Be sure to maintain and periodically
calibrate the GD-K7D2 as described in this manual.
Table 1: Specifications
Target Gas & Detector Range Refer to the RKI Instruments Inc. List of Detectable Gasses
Area Classification Indoor, non-hazardous locations
Sampling Method Sample-draw
Input Power 24 VDC
Signal Output 4 to 20 mA
Response Time 90% in 60 seconds
Accuracy ± 10% of reading or ± 5% of full scale (whichever is greater)
Flow Rate Approximately 0.5 liters/minute
Recommended Sample Tubing 4 mm I.D. x 6 mm O.D. Teflon PTFE
Recommended Sample Tubing Length See Table 2 in the Installation section on p. 10