Teledyne LGA-3500 - Laser Gas Analysis system - Manual (Page 57)

Laser Gas Analyzer Operation
Teledyne Analytical Instruments 43
Figure 4.19: Measured Pressure Menu
Items displayed on the Measured Pressure screen (Figure 4.19) are:
• Pres. input--4mA: The gas pressure input is taken from a
pressure measurement. It is input to correspond with a 4-20mA
output signal. Pres. input--4mA is the gas pressure corresponding
to 4mA.
• Pres. input--20mA: This is also taken from a measurement. It is
the gas pressure corresponding to 20mA.
The buttons on this menu refer to:
4mA: Set the corresponding gas pressure when the pressure
input signal is 4mA.
20mA: Set the corresponding gas pressure when the pressure
input signal is 20mA.
3. Concentration Output Menu
Items displayed on the Concentration Output screen (Figure 4.20)
are:
• Con. output--4mA: The measured gas concentration output is in
the form of 4-20mA. Con. output--4mA is the gas concentration
value corresponding to 4mA.