Fluke Thermalert 4.0 Series, User Manual, Page: 70 / 135

ASCII Programming
Sensor Setup
71
10
A=250 sets the ambient background temperature compensation according to the setting of “AC”
command, see section 10.4.3
Background Temperature Compensation , page 71.
XG=1.000 sets the transmission
?T asks for the target temperature
?I asks for the internal temperature of the sensor
?Q asks for the energy value of the target temperature
10.4.2 Emissivity Setting
The emissivity setting is selected by means of the “ES” command.
ES=I
sets emissivity by a constant number
ES=E sets the emissivity by an analog voltage on the external input FTC1 (12-wire model only).
For more information see section 5.8.3
FTC1 – Emissivity Setting , page 49.
ES=S sets emissivity by a rotary switch (2-wire model only)
?CE asks for the current emissivity value
?E asks for the internal emissivity value
10.4.3 Background Temperature Compensation
In case the background temperature is not represented by the internal sensor case temperature, you must set
the ambient background temperature values as follows:
A=250.0
current background temperature according to the setting of “AC” command
AC=0 no compensation (internal sensor case temperature equal to background temperature)
AC=1 compensation with a constant temperature value set with command “A”
AC=2 compensation with an analog voltage signal at the external input,
0 – 10 VDC corresponds to the temperature range of the sensor.
Resulting temperature is read out by command “A”. For more information see section
5.8.4
FTC2 – Background Temperature Compensation , page 49.
10.4.4 Temperature Hold Functions
The following table lists the various temperature hold functions along with their resets and timing values. Use this
table as a guide for programming your sensor and adjusting the hold times. For further information see section
6.2
Post Processing , page 55.
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