agilent gauge 531 output

Question

Guys, I have some doubts about the sensor agilent gauge 531 output, how can I measure the output voltage from 0 to 11mv because when measured it presents an output of around 120mv on both outputs

dahulett · Accepted Answer

The Agilent 531 and 536 TC gauges are designed to work with gauge controllers with an internal voltmeter and current source. They require 165mA current input to the filament heater. 
 Are you using a gauge controller?

Queiroz · Answer

I will get an output of 0 to 11mv just with the controller?

dahulett · Answer

That is the output from the gauge to the appropriate controller. This will be converted by the controller electronics into a pressure value on the controller display.

Queiroz · Answer

I didn't understand why when I measured directly on the sensor it showed a value of 117mv on one of the outputs and 120mv on the other and with time and an increase in the vacuum this voltage varied. So, directly from the sensor, a value from 0 to 11 mv should already be indicated?

dahulett · Answer

Your supply to the gauge may be more than 5V at 165ma

agilent gauge 531 output

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