The TCA-MS-K-1 Thermocouple Amplifier Module functions to convert the low output voltage signal from a Type K thermocouple probe into a linearized 0 to 5 VDC output voltage. This output is ideal for interfacing to dataloggers, aftermarket ECU's, temperature indicators, chart recorders, controllers, or other instrumentation equipment.
- - 0 to 5 VDC Output
- - On-Board CJC
- - Quick Connection via Mini-Thermocouple Plug (included)
- - Compact Size, only 2.5" x 2.5" x 0.9"
- - MADE IN THE USA
| Thermocouple Input: : | Type K |
| Linearized Analog Output: | 0 to 5 VDC |
| Supply Voltage: | 10 to 32 VDC |
| Temperature Measuring Range: | +32 to +2282°F (0 to +1250°C) |
| Output Scale Factor: | 2.2 mV / °F (4.0 mV / °C) |
| Number of Input Channels: | 1 |
| Number of Output Channels: | 1 |
| Resolution: | Infinite |
| Response Time: | > 1 mS |
| Non-Linearity: | < +/- 2% FRO |
| Output Cable: | 3 conductor, 22 AWG, PVC jacket, 6 foot long |
| Current Draw: | < 50 mA |
| Humidity: | 85% Max. RH (non-condensing) |
| Liquid & Dust Protection: | IP51 |
| Weight: | 3 oz (85 g) |
SKU: TCA-MS-K-1-IND
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TCA-MS-K-1 Single Channel Type K Thermocouple Amplifier_User Manual_Rev 4The single-channel Type K thermocouple amplifier module converts the millivolt-level output of a Type K thermocouple into a 0–5 VDC analog signal suitable for direct input to PLC analog input cards, DAQ systems, and microcontroller ADC inputs. The module handles cold-junction compensation internally, correcting for ambient temperature at the terminal strip so the 0–5 V output represents absolute temperature rather than the temperature difference between the measurement junction and the cold junction.
Single-Channel vs. Multi-Channel Modules
The single-channel module is the appropriate choice when only one thermocouple needs to be converted in a given location, or when thermocouples are distributed across a system and centralized multi-channel conversion would require excessively long Type K extension wire runs. Using a single-channel amplifier local to each thermocouple and transmitting the 0–5 V output (or converting to 4–20 mA for longer runs) allows standard copper instrument cable to be used for the majority of the cable run, reducing the cost of Type K alloy extension wire in large systems.
Output Scaling and Calibration
The 0–5 VDC output is typically scaled so that 0 V corresponds to 0°C and 5 V corresponds to the maximum temperature of the application range — for example, 0–1300°C for EGT monitoring, or 0–500°C for CHT applications. This scaling is set at the factory or configurable in the field depending on the module variant. When integrating with a PLC, the engineer needs to verify the scaling and configure the PLC's analog input scaling parameters to match, ensuring that the displayed temperature value matches the actual thermocouple reading.
