Teledyne 3300PA operating instructions Gas Connections, Sensor Fail

3 Installation Model 3300PA

Figure 3-2: Contact ID for FAILSAFE Relay Operation

The specific descriptions for each type of alarm are as follows:

Alarm #1	Programmable as high or low alarm. Can be set any-
	where between 0 and 25 %.
Alarm #2	Programmable as high or low alarm. Can be set any-
	where from 0 to 25 %.
Sensor Fail	Actuates when the output of the Micro-Fuel Cell sensor
	falls below the acceptable level (0.05% O2).
CAUTION:	There could be hazardous voltage at the alarms termi-
	nals, even when power is removed from the instrument.

Internal Sensor Wiring: The receptacle for the analysis unit cable is located in the lower left-hand corner of the rear panel. The 6-pin polarized connector is keyed to fit only one way into the receptacle. Do not force it in. The other end of the cable have two terminal connectors. This should be connected to the header on the top of the sensor.

3.4Gas Connections

The standard Model 3300PA has two inlets and one outlet fixture only. Calibration gasses can be connected into the "Span" inlet. The two inlets and one outlet are 1/8 inch brass fittings.

A selector valve is provided to feed the analysis unit with either sample or gas.

A flowmeter and a flow controller valve are part of the system and will assist in setting the flow of the gas.

Sample flow should be adjusted to 2 SCFH. The sample vent connec- tion should not restrict the sample flow. The sensor is designed to operate at

3-4 Teledyne Analytical Instruments