PRO-TC-MAN-17V01 (0802)
Copyright © 2017 Define Instruments
11
5.3 - Temp 1 – Temp 4
An individual temperature channel can be used as a data source by selecting
TEMP 1
,
TEMP 2
,
TEMP 3
or
TEMP 4
. Individual temperature channels can be used as a data
source for any kind of controller output (see 5.1).
5.4 - Multi channel data sources
For multi channel functions to operate correctly, you must specify how many chan-
nels are to be included in the sample range (see 6.3G: 'Number of Channels for Multi
Channel Functions').
Note that the controller will assign channels sequentially if you select less than 4. I.e. Selecting
2 CH
will use channels 1–2;
3 CH
will use channels 1–3.
4 CH
will use channels 1–4.
A Average Temperature
The Average Temperature (rendered on your LED display as '
AVETMP
') is a cal-
culated value, created by averaging 2, 3 or 4 of the thermocouple input chan-
nels, as selected in 'Number of Channels for Multi Channel Functions' (6.3G).
This value can be used as the default view for the operational display, or as a
data source for analog output, serial output, setpoint control, or the peak and
valley values. The
AVETMP
value can also be viewed via the
button on the
main display (see 2.3).
B Max/Min Temperature
Max Temperature (
MAXTMP
) and Min Temperature (
MINTMP
) are the maxi-
mum and minimum instantaneous temperatures, taken over the number of
channels selected in 'Number of Channels for Multi Channel Functions' (6.3G).
For example, if you selected
3 CH
in 6.3G, then the controller will sample chan-
nels 1–3 continually to maintain up-to-date
MAXTMP
and
MINTMP
values. If
CH1=60.5, CH2=60.8 and CH3=60.6, then the
MAXTMP
value at that point in
time will be 60.8, and the
MINTMP
value will be 60.5.
The
MAXTMP
or
MINTMP
value can be used as the default view for the op-
erational display, or as a data source for analog output, serial output, setpoint
control, or the peak and valley values.
