Endress+Hauser Prothermo NMT532, Operating Instructions Manual

Page: 51 / 72

Prothermo NMT532 Operation
Hauser 51
8.3.5 Element position 2: VH46 to VH49 (VH40 to VH45 are not
available in NMT532)
Code Display Details
VH46 Hysteresis Width
(Hysteresis width) Item type Read / Write
Default 10 mm (0.39 in)
Range 0 to 99 999 mm
Sets the hysteresis of an element switch position.
Hysteresis entered as an offset value can prevent hunting caused by
fluctuations of the level surface. This changes according to the range of
fluctuations.
VH47 Clear Memory
(Memory deletion) Item type Selection
Default None (0)
Range 0 to 99 999 mm
Selection None, Clear
Resets the matrix parameter to the default setting.
VH48 Gas Offset
(Gas offset) Item type Read / Write
Default 300 mm (11.81 in)
Range 0 to 99 999 mm
When a temperature element in the gas (vapor) phase is within the
shown range below, it is not used for average gas temperature
calculations.
1
2
3
4
5
7
a
6
A0038550
 36 Gas offset
a VH48 gas offset 300 mm (11.81 in) (Default)
1 To NMT532 converter
2 Temperature element
3 Gas phase
4 Exclusion range (see Note)
5 Level
6 Liquid phase
7 To tank bottom

Although temperature elements in this range are in the gas
phase, they are excluded from average gas temperature
calculations in order to avoid effects from the interface between
the liquid phase and the gas phase.
VH49 Liquid Offset
(Liquid offset) Item type Read / Write
Default 300 mm (11.81 in)