What is the difference between ABB’s temperature control modules TTH200 and TTH300?
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As the title suggests, HaiChuan.com states that it is a TTH200 with single-channel input； The TTH300 features dual-channel input, supports dual redundant output configurations, and allows for high-precision calibration using thermistors (with an overall accuracy of up to 0.02°C). What does this high-precision calibration mean? Are there any other differences in performance metrics?
Waiting online; need to make a selection urgently. Please, experts, help me out. . .
I need to go report to my manager today... Waiting online, begging for it~~~
Overall, the TTH300 has more powerful functions, but in most field applications, the TTH200 is sufficient to meet the requirements. 1. Sensor backup/automatic sensor redundancy switching (2 x Pt100 3-wire connection): The TTH300 can be connected to two PT100 thermistors for redundancy; if the currently used RTD fails, it automatically switches to the other one. 2. The TTH300 supports more fieldbus communication protocols, such as PROFIBUS PA and Foundation Fieldbus. 3. Additionally, the TTH300 has Freestyle characteristics – a feature with 32 support points; this is not detailed in the specifications, and it’s hard to understand without having used it.
In terms of accuracy, is there a significant difference between the two?
The precision is the same; if you need it, I can provide you with the specification sheet, though it will be in English. I don’t know why ABB meters have to be used.
Technically, I don’t understand why it’s used either. In terms of business, I get it:shutup: Speaking of using a dual-channel approach to deceive people, have you considered another issue? Is the design based on two separate boards, or one board with dual channels? If one of the boards fails, then there’s no redundancy left. PS: I’m a complete amateur, an absolute novice.