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Doc.-no.: DPC310_01_EN Issue: 01/2018
5.5.2 Temperatur controlled setpoint
For a temperature-compensated setpoint, an additional temperature sensor is required.
For example, an Arthur Grillo MINI903L with a measuring range of -30...+70° C. These
temperature sensors are available in different versions and can be manufactured individually
for specific applications.
All needed parameters are set in the DPC310, and the temperature ist displayed in the
first display row.
If the menu item ‚input function‘ is set to ‚temp ctrl setp‘, the next step is the input of
temperature t1. This is the starting value of the compensation.
The next input, temperature t2 corresponds to the final value of the compensation.
The following menu item „compensated setp“ corresponds to the setpoint value for the
full compensation.
Following states are possible:
•
t
mess
> t
1
: The setpoint is not changed.
•
t
mess
< t
2
: The maximum compensation is reached, and the setpoint is equal to the set
value for compensated setpoint.
•
t
1
< t
mess
< t
2
: The microcontroller calculates a linear context between all parameters,
and the setpoint is reduced accordingly.
Following formula is used:
setpoint
comp
=
(
∣
t
2
∣
+
t
mess
)
(
t
1
−
t
2
)
•
(
setpoint
−
compensated setpoint
)+
compensated setpoint
Δ
P/Pa
t /°C
setpoint
compensated
setpoint
t
2
t
1
setpoint
comp
setpoint
comp
=
(
∣
t
2
∣
+
t
mess
)
(
t
1
−
t
2
)
•
(
setpoint
−
compensated setpoint
)+
compensated setpoint
