| Differential Temperature
- Measurement & Display By: Larry Miller, Applications Engineer |
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| This application is an example of an easy and accurate way of displaying differential temperature measurements using thermocouples. |
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| The Action Pak 4351-2000 or, if din rail mounting is perfered, the ActionI/Q Q486-0000's are used to linearize the thermocouple signal. By tying the negative output of the 4351-2000's or the Q486-0000's together and running the positive outputs into the Action Pak 4380-2000, the 4380 becomes a differential amplifier and the output will represent the temperature difference between the two thermocouples. |  |
| To alarm on the difference, an Action Pak 1080-2000 (single trip) or an Action Pak 1090-2000 (dual trip) can be used in place of the 4380. A Visipak V508 is used to display the actual difference of the thermocouple signals. |
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Last updated January 6, 2004 | ||
