Process Technology DQ15D Instruction Manual page 14

Temperature Sensor - Number represents degrees Celsius or
Fahrenheit as determined by the "F5" setting
Voltage Sensor - Number represents tenths of a Volt (0.1 VDC)
Current Sensor - Number represents hundredths of milliamps
(0.01 mA)
Resistance Signal Devices - Number represents ohms.
Frequency Signal Devices - This setting will have no effect.
U3, Output Signal Offset
This setting, which may be any number from -9 to +9, adjusts the optional
4-20 mA process value output. This does not affect the display value.
The value is added to the signal level and causes the value to be "rounded"
in an "intelligent" receiving device.
Note: This function requires either the optional 5416 or 5419 sensor
boards.
Temperature Sensor - Number represents degrees C or F,
determined by the "F5" setting
Voltage Sensor - Number represents tenths of a volt
(0.1 VDC)
Current Sensor - Number represents hundredths of
milliamps (0.01 mA)
Resistance Signal Device - Number represents ohms
Frequency Signal Device - Setting represents hertz (counts/second)
Note: The default and minimum for the parameter is one (1).
U4, Signal Filter
This setting, which may be any number from 1 to 64, represents the num-
ber of samples taken from the sensor and maintained in memory. These
samples are then averaged to provide an active filter of the signal.
Using a small value for this setting will cause the DQ15D control to re-
spond more quickly to sudden changes in the sensor signal level, but this
also causes the unit to be more susceptible to EMI/RFI noise. As this
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value is increased, the susceptibility to inference is reduced.
The default value for this setting is four (4).
Note: When sensing temperature with a 100 ohm RTD (2 or 3 wire),
set this value to twenty (20) to reduce control error.
When sensing frequency signal, this setting establishes the time period for
the controller to wait for a pulse signal. Use two (2) for this value, when
measuring frequency. This causes the control to measure frequencies as
low as 1 hertz while updating the display once every two seconds.
U5, "SP1" Set Point Dead Band
This setting, which may be any number from 1 to +99 represents a dead
band that only applies to the "SP1" SET POINT. This is the heat set
point.
Temperature Sensor - Number represents degrees Celsius or
Fahrenheit as determined by the "F5" setting
Voltage Sensor - Number represents tenths of a volt (0.1 VDC)
Current Sensor - Number represents hundredths of milliamps
(0.01 mA)
Resistance Signal Devices - Number represents ohms
Frequency Signal Devices - Setting represents hertz (counts/second)
This bandwidth applies to the low side of the "SP1" SET POINT. If the
"U5" setting is set at 5º F and the "SP1" SET POINT is set at 115º F, then
the set point relay is de-energized when the (displayed) temperature reaches
115º F and it is reenergized when the temperature falls to 110º F.
Note: The default and minimum for the setting is one (1).
U6, "SP2" Set Point Dead Band
This setting, which may be any number from +1 to +99, represents a dead
band that only applies to the "SP2" SET POINT. This is the cool set point.
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