Good day, I wanted to ask a question about the IMG-100 NW25 high vacuum sensor.

Question

Good day, 
 I wanted to ask a question about the IMG-100 NW25 high vacuum sensor. 
 As you can see in the photo, several sensors are installed on the experimental vacuum chamber, and they show different values under the same vacuum conditions. 
 Question: 
 1) Do you have any methodology for checking or calibrating the IMG-100 NW25 high vacuum sensor and the VARIAN XGS-600 vacuum gauge? 
 2) Is it possible to check the sensor through resistance? If yes, what should be the resistance parameters for the IMG-100 NW25 high-vacuum sensor to show certain pressures? 
 3) The sent document on cleaning the sensor says to soak the sensor in the solvent recommended for the specific chemical. Is there any universal solvent that will not damage the sensor?

dahulett · Accepted Answer

The IMG100 gauge has a sensitivity of 2.7 A/Torr +/- 20% at 5 x 10-6 Torr. It is accurate +/- 50 % within a pressure decade. This is normal for them not to have the exact same pressure reading, but they should all be the same range (Ex: 10-6torr, 10-9torr, etc.) 
 There is no way to check the gauge with a resistance check. 
 100% IPA or acetone are recommended for most UHV cleaning applications.

IAE · Answer

Thanks for the answers to the previous questions! I would also like to know what analog can replace the sensor IMG-100? And regarding the previous questions (2) I did not express myself correctly, now not on the sensor itself, but on the cable connect a resistance and look at the pressure through a vacuum gauge?

dahulett · Answer

Any of the Agilent the FRG gauges can replaced the IMG, but an analog board would be needed in the XGS controller. There is no easy way to directly measure the output signal of the IMG gauge on the sensor head or from the gauge cable.

Good day, I wanted to ask a question about the IMG-100 NW25 high vacuum sensor.

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