4.4.8 Temperature Coefficient
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Default: 18 s
Interface command:
FILTER
4.4.7.2 Filter Window
Filter window is an extra feature of the filter algorithm. If a single reading is different
from the filtered value by more than the window limit, the algorithm will assume the
change was intentional and restart the filter. The filter window is set in percent of full
scale resistance range.
Menu navigation:
Input Setup
Q
Input
(A, 1 – 16)
Q
Filter Window
Q
(1% to 80%)
Default: 10%
Interface command:
FILTER
4.4.8 Temperature
Coefficient
If an RTD is used for temperature control and does not have a temperature response
curve, the user must indicate the temperature coefficient of the device so that the
control equation can be calculated correctly. This setting sequence will be skipped if a
curve is selected for a given input. Platinum and Rhodium Iron RTDs are positive tem-
perature coefficient and most thermistors and semiconductor RTDs like Cernox® and
Germanium are negative temperature coefficient.
Menu navigation:
Input Setup
Q
Input
(A, 1 – 16)
Q
Temp Co
Q
(Negative or Positive)
Default: Negative
Interface command:
INSET
4.4.9 Input Name
To increase usability and reduce confusion, the Model 372 provides a means of
assigning a name to each of the inputs as well as each scanner channel if a scanner is
attached. The designated input name is used on the front panel display whenever
possible to indicate which sensor reading is being displayed. Refer to section 4.2.3 for
alpha-numeric entry.
Menu navigation:
Input Setup
Q
Input
(A, 1 – 16)
Q
Input Name
(15 Character String)
Default: Input A, Channel 01… Channel 16
Interface command:
INNAME
4.4.10 Temperature
Limit
The temperature limit parameter provides a means of protecting your equipment
from damage by shutting down all control outputs when the assigned temperature
limit is exceeded on any sensor input. The parameter is available for both the control
input and each of the measurement channels. A temperature limit of 0 K (default
value) turns this feature off.
Menu navigation:
Input Setup
Q
Input
(A, 1 – 16)
Q
Temperature Limit
(0 K to 2999 K)
Default: 0.0000 K
Interface command:
TLIMIT
4.4.11 Preferred Units
The preferred units parameter determines which units are used to display setpoint
and max/min parameters whenever these parameters are displayed in any display
mode. The sensor reading is also displayed in preferred units in all display modes
except for the custom display mode, where each sensor location can be assigned spe-
cific display units.