Teledyne IR-7000 - Non-dispersive infrared series - Manual (Page 29)

NDIR Gas Analyzer Installation 3
Teledyne Analytical Instruments., - Rev. 3 21
WARNING: If your application uses a toxic, flammable or explosive gas, use
additional leak checking methods such as a hand held gas sniffer.
Periodically, use a portable combustible gas analyzer or sniffer
around all joints and fittings.
• When there are no leaks in the sample system, run span gas
through and then sample gas to check the flow rates. If you are
using a bypass loop, do not set the sample or calibration
regulators above 5 psig in an effort to increase the flow.
3.6 Electrical Connections
All electrical connections to the analyzer are made on the rear panel.
Figure 3-5 shows the rear panel for the IR7000 analyzer. Other models are
similar. Electrical connections to be made at the rear panel are:
• Analog output
• O
2
channel output (optional)
• 2 solenoid valves (3 for explosion proof model)
• 4–20 mA current output (optional)
Figure 3-1: Suggested Sample System 1 (with Optional O
2
Cell )