Hysteresis Limit; Temperature Correction Variable - ProMinent DULCOMETER Assembly And Operating Instructions Manual

Control parameters and functions
9.4

Hysteresis limit

Measured value
Upper
limit value
"Hysteresis"
"Hysteresis"
Lower
limit value
Limit value
transgression
Fig. 32: Hysteresis
Upper lim. value = LIMIT↑
Lower lim. value = LIMIT↓
The range between LIMIT↑ and LIMIT↓ is the valid measuring range.
The controller has a configurable
'hysteresis' works towards rectifying the limit value transgression, i.e. if the 'Limit↑'
The
of, for example, 3.00 ppm has been exceeded, then the criterion for limit value transgres‐
sion is redundant until the value drops below 2.80 ppm. The hysteresis behaviour for a
'Limit↓' works analogously, (the hysteresis value is in this case is added to Limit ↓) e.g.
'Limit ↓' 2.50 ppm, hysteresis 0.20 ppm, then the criterion for limit value transgression is
redundant until the value exceeds 2.70 ppm.
9.5 Temperature correction vari‐
able
The correction variable compensates for
the effect of the temperature of the
medium on the measured value. The cor‐
rection variable is the temperature of the
medium to be measured.
70
'hysteresis' of 0.01 ppm ... 1.00 ppm.
Operating modes
[off] : No temperature compensation
n
takes place
– For measurements which do not
require temperature compensa‐
tion
t
t
A0009_GB