INSTRUMENT MANUAL
VACUUM GAUGE MODEL MM200
160Phone:(215) 947-2500 fax:(215) 947-7464 e-mail:sales@televac.com web site:www.televac.com
MM-200_im REV M
Page 51 of 160
GAS
1. Push N2/GAS button to change from nitrogen or air mode to GAS mode (normally ARGON). Controller
accurately displays pressure value of gas other than nitrogen or air.
2. Push N2/GAS button to return display to normal nitrogen or air mode.
MEASUREMENT UNITS
1. Push units button to select desired unit of measure other than TORR or MICRONS such as PASCAL,
MBAR, and SCC/M. Continue to push until desired units are displayed.
LEAK RATE
1. Push LEAK RT button to display leak rate LED. After 15 seconds the leak rate value is displayed under the
MICRONS/HR heading. Value is average leak rate from time pushed. Push again to return to normal operation.
Leak rate is measured using the data from station number "1". Currently leak rate is only processed for
thermocouple and convection type gauges. Therefore, no attempt should be made to use the leak rate function, if
station number "1" is not assigned to one of these station types.
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