Installation Model 3190Z
Teledyne Analytical Instruments 16
External Probe: The receptacle for the analysis unit cable is located in
the lower left-hand corner of the rear panel. The 6-pin Minifit ™
connector is keyed to fit only one way into the receptacle; do not force
it. The other end of the cable consists of four separate wires. These
should be connected to the terminal strip on the analysis unit as follows:
Red: #1 White: #3
Black: #2 Green: #4
Refer to the Final Assembly, located at the back of the manual.
3.4 Gas Connections Gas connection instructions depend on the specific external probe
used and any special requirements of the process being monitored.
The standard Model 3190Z External Probe has inlet and outlet
fixtures only. Calibration gases must be externally piped into the sample
inlet through appropriate valves. Quarter-inch tube fittings are used. For
metric installations, quarter-inch to 6 mm adapters can be supplied.
In general, sample flow and pressure must not create significant
backpressure past the sensor. For the standard probe, 2 SCFH (1 LPM)
is the nominal recommended flow rate.
The pressure required will depend on the sampling system. The
simplest method of pressure regulation is venting the outlet directly to
atmosphere. If venting into a system of varying pressure, some form of
pressure regulation is required.
3.5 Installation Checklist Before connecting the instrument to a power source and applying
power, make sure you have:
• Correctly installed the sample and exhaust gas lines
• Checked for leaks
• Set the sample pressure to 5-10 psig nominal
Once the above checks have been made, you can apply power. The
instrument is now ready for operation.