Chapter 7 Temperature Measurement Module AS04/08TC
7- 3
There are two types of thermocouple thermometers: wrapped thermocouples and bare thermocouples. A
wrapped thermocouple is wrapped in protective metal, and is similar to an electric spoon in appearance.
Wrapped thermocouples are used to measure temperature of liquid, and bare thermocouples are used to
measure temperature of gas.
7.1.1 Characteristics
(1) Select a sensor based on its practical application.
Type J thermocouples, type K thermocouples, type R thermocouples, type S thermocouples, type T
thermocouples, type E thermocouples, or type N thermocouples, with ±100 mV voltage inputs
(2) Select a module based on its practical application.
AS04TC-A: Has four channels. Inputs received by a channel are temperatures.
AS08TC-A: Has eight channels. Inputs received by a channel are temperatures.
(3) High-speed conversion
A temperature is converted into a digital signal at a speed of 200 ms per channel.
(4) High accuracy
Conversion accuracy: the error range is ±0.5% of the input at ambient temperature of 25° C ±5° C.
(5) Disconnection detection
When a sensor is disconnected, the module produces an alarm or a warning.
(6) PID control
An object’s temperature can be maintained through PID control actions.
(7) Use the utility software to configure the module.
The HWCONFIG software is built into ISPSoft. You can set modes and parameters directly in
HWCONFIG without spending time writing programs to set registers to manage functions.
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