51305890-175 Product datasheet
Model number: |
51305890-175 |
|
Module Type: |
Low Level Multiplexer Thermocouple |
Manufacture: |
HONEYWELL |
|
Condition: |
Brand New |
Range of Product: |
Experion PKS |
|
Lead time: |
In Stock |
Weight: |
0.82 kg |
|
HS CODE: |
8537101190 |
Dimension: |
30.6×12×7cm |
|
MOQ: |
1 |
Product Origin: |
USA |
|
System: |
DCS |
Discontinued on: |
active |
|
Communication Service: |
Ethernet router |
51305890-175 Functional Description
If you have other request contact our team to get customized service
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Remote CJR Installation
The acronym 'CJR' stands for Cold Junction Reference. A CJR is required when thermocouples are used to sense temperature. The thermocouple provides a voltage that is a function of the difference in temperature between the probe tip (hot junction) and the other end of the thermocouple wires (at the cold junction reference). The microprocessor in the FTA converts this relative temperature to absolute temperature using the differential reading of the thermocouple and the absolute temperature of the CJR. If the thermocouples are terminated directly on the FTA, a 'local' (on the FTA) CJR is used. However, in some instances the thermocouples may be terminated at a remote 'marshalling' panel and then connected to the LLMUX2 with copper wire. In this case, the CJR should be located at the point where the thermocouples 'go to copper' in order to ensure accuracy of measurement. This is when the use of the Remote CJR option is appropriate. Note that the same FTA (51305890-175) is used regardless of whether you order the LLMUX2 TC with local CJR (model MC-TAMT04) or the LLMUX2 TC with Remote CJR (model MC-TAMT14). A jumper on the FTA assembly selects whether to use the local (on-board) CJR or the Remote CJR. The model MC-TAMT14 includes the extra components required to provide the Remote CJR implementation.