2 Inert gas technology
Functional description
MB-20-G/MB-200G-W_MB-LABmaster_MB-200 MOD_TP700
Operating Manual - V5.0 - 04/2018 - STD
Page
2 - 21
2a Lower working limit set point (this figure shows the lowest possible value)
5
2b Upper working limit set point (this figure shows the highest possible value)
5
3 An alarm is generated, the valve to the vacuum pipe gets closed and locked
4 An alarm is generated, the valve to the gas supply pipe gets closed and locked
Automatic pressure control
If the box pressure exceeds the upper working limit set point or falls below the lower
working limit set point, evacuation takes place for a short time (upper working limit) or ad-
ditional gas is added (lower working limit). This continues until the pressure falls back into
the range defined by the working limit set points plus or minus the adjusted hysteresis.
The hysteresis values for the upper and the lower limit can be set independently (depend-
ing on the software version).
① Box pressure in upper range
② Box pressure in lower range
1a Lower alarm limit set point
1b Upper alarm limit set point
2a Lower working limit set point
2b Upper working limit set point
3a Lower hysteresis value
3b Upper hysteresis value
5
Actual values of parameter 2a and 2b may differ based on operators individual parameter set-
tings. The prevailing working pressure value (operating pressure) can be adjusted between these
two limits using the foot pedal.
To Next Page
Loading...
