Teledyne 2750 - Portable turbine generator gas analzyer - Manual (Page 23)

Turbine Generator Gas Analyzer Installation
Teledyne Analytical Instruments 23
3.3.1 Zero Calibration Procedure
1. Connect the zero gas (100% CO
2
) to the sample valve. Make
sure that the pressure regulator is set at approximately 5 psig.
CAUTION: ALWAYS HAVE THE SAMPLE FLOW VALVE
CLOSED WHEN TURNING ON THE SAMPLE (OR
CALIBRATION GAS) STREAM. FLOW RATES
GREATER THAN 2.5 SCFH CAN DAMAGE THE
SENSOR.
2. If not already connected, connect the vent line.
3. Plug the DC adapter into the unit. See Figure 3-2. Plug the other
end into a 90-264 VAC 43-67 Hz supply.
4. Turn the instrument on and allow it to warm up for 20 minutes.
5. Allow the zero gas to flow through the analyzer. Wait several
minutes before making any flow adjustments. Then set the gas
flow to 0.5-1 SCFH using the flow control valve.
6. With CO
2
flowing through the instrument, set the calibration
switch (see Figure 3-3) to the air/CO
2
position for zeroing that
range. Verify that the range selector switch is on the air/CO
2
position.
Figure 3-3: Interface Panel Showing Calibration Switch Position