Analog Meter; Analog Output; Start-Up; Preliminary - Teledyne 275R Instruction Manual

3.0 Operations 3.0 Operations 3.0 Operations 3.0 Operations 3.0 Operations
3.1.6 3.1.6
3.1.6

3.1.6 Analog Meter

3.1.6
The meter has three scales:
• 0-100% H
• 0-100% air in CO
• 90-100% H
The output of the circuitry for the 0-100% H
ear with the most sensitive area being at the low end. The other two scales
are almost linear. A special meter dial is provided with markings located to
accommodate these non-linearities so that extrapolation is not required.
3.1.7 3.1.7

3.1.7 Analog Output

3.1.7 3.1.7
A 0-1 VDC output is provided. This output is non-linear and must be
interpreted using the curves in the Appendix. The load on this signal must
be less than 10,000
signal.
3.2 3.2 3.2 3.2

3.2 Start-Up

3.2.1 3.2.1
3.2.1

3.2.1 Preliminary

3.2.1
1. Check that the inlet and outlet lines have been connected to the
proper ports in the rear of the analyzer, and that all the lines are
leak-free.
2. Plug the power cord in.
3. Turn the analyzer power switch ON. The switch is located on
the lower left-hand corner of the front panel.
4. Allow the analyzer to warm up until the lamp starts flashing.
Allow 15 more minutes of warm-up.
3.2.2 3.2.2
3.2.2 3.2.2 Flowrate 3.2.2
The gas flowrate should be approximately 0.1 SCFH
sure.
3.2.3 3.2.3
3.2.3

3.2.3 Calibration

3.2.3
1. With 100% CO
control potentiometer so that the meter reads zero for Range 1
and Range 2 of the analyzer.
3.2
Analog Meter Analog Meter
Analog Meter Analog Meter
in CO (green).
2 2
background (black).
2
in air (red).
2
Analog Output Analog Output Analog Output
Analog Output
to ensure that it will not cause error in the output
Start-Up Start-Up Start-Up Start-Up
Preliminary Preliminary
Preliminary Preliminary
Flowrate Flowrate
Flowrate Flowrate
Calibration Calibration
Calibration Calibration
flowing through the cell, adjust the zero
2
TELEDYNE ANALYTICAL INSTRUMENTS
in CO scale is nonlin-
2 2
0.1 SCFH 0.1 SCFH 10 psi 10 psi
0.1 SCFH, at 10 psi 0.1 SCFH 10 psi 10 psi pres-