Instruction Manual CVM211 Stinger
InstruTech Page 21
7.2 Log-Linear Analog Output
The following table is for use with CVM211 Stinger part numbers ending with the letter “L” providing an output
voltage that is linear with respect to the log of pressure.
Log-Linear analog output for CVM211GAA-B-L through CVM211GHA-B-L
Values listed under each gas type are in volts.
The log-linear output signal and pressure are related by the following formulas:
P = 10
(V - 5)
V = log
10
(P) + 5
where P is the pressure in mbar, and V is the output signal in Volts.
An analog output of less than 0.01 volts to near 0 volt indicates a damaged or faulty sensor.
The chart on the following page shows the graphical results of the table and formulas given above for nitrogen.
True pressure (N
2
) is plotted on the X-axis with a log scale. The output signal is plotted on the Y-axis on a linear
scale.
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