5
Operation
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Series 907 Analog Convection Transducer
Instruction Manual - #109070001
Figure 5-3: Output Voltage vs Pressure
5.5 Using the Series 907 Transducer with Other Gases
Before using the 907 Transducer to measure pressure of gases other than air or nitrogen, read and
understand this section. Contact the MKS Customer Service Department if additional information is
needed.
The 907 is designed to give voltage output according to the graph in Figure 5-3 or the table in Figure
5-2 for air or nitrogen. If the transducer is used to read pressure of gases with poorer heat transfer
properties than nitrogen, the true system pressure may be much higher than indicated.
This reading
error could lead to a dangerous overpressure.
A vacuum system which is backfilled from a pressurized gas
source should have a safety device installed, such as a burst
disc. See
