User Manual

Combustilbe Gas Transmitter • 8 Pioneer Operator’s Manual (PRELIMINARY)

Start Up

This section describes procedures to start up the combustible gas transmitter and place the

transmitter into normal operation.

Introducing Incoming Power

1. Complete the installation procedures described earlier in this insert.

2. Verify that the power wiring is correct and secure (see Chapter 3, Installation and

Start Up.)

3. Turn on or plug in the incoming power at the power source end, then place the

Pioneer’s power switch in the ON position.

4. Verify that the main PILOT light is on and the pilot light for each analyzer card is

ﬂashing.

CAUTION:

Allow the detector to warm up for 15 minutes before you continue with the next

section, “Setting the Zero Signal.”

Setting the Zero Signal

CAUTION:

If you suspect the presence of combustible gas in the monitoring environment, use

the calibration kit and the zero air calibration cylinder to introduce “fresh air” to the

detector and verify an accurate zero setting.

1. Verify that the transmitter is in a fresh air environment (environment known to be free

of combustible gas).

2. Unscrew and remove the junction box cover from the junction box.

3. Set a voltmeter to measure in the millivolt (mV) range.

4. Plug the voltmeter leads into the test points on the ampliﬁer. Plug the positive lead

into the test point labeled

TP+

; plug the negative lead into the test point labeled

TP-

5. Verify a voltmeter reading of 100 mV (±2 mV).

6. If necessary, use a ﬂat-blade screwdriver to adjust the zero potentiometer until the

voltmeter reading is 100 mV (±2 mV).

7. Secure the junction box cover to the junction box.