User Manual

Model GD-K77D
Operator’s Manual Installation • 18
Tubing Connections
Tube Fittings
Two tube fittings are provided for sampling, one for inlet and one for exhaust. The fittings
accept 4 mm (ID) x 6 mm (OD) Teflon tubing.
Figure 8: Inlet/Exhaust Fitting Use
Flow Rate
The flow rate of the Model GD-K77D is 0.5 L/M (liters per minute)
Tubing Material
The tubing materials you choose will depend upon the target gas being detected. Some
target gases are corros ive whi le othe rs are absorpti v e. Choos e your tubi ng mate rial s
carefully for both length and material. RKI Instruments recommends PTFE Teflon tubing.
4 x 6 mm Teflon
PTFE Tubing
Nut
Ferrule
Tubing
Insert