The MAQ20-JTC is an 8-channel differential analog input module designed for Type J thermocouples. It features individual channel configuration for range, alarm limits, and averaging, with selectable input ranges including -100°C to +760°C, -100°C to +393°C, and -100°C to +199°C. The module includes four-sensor cold-junction compensation with accuracy of ±0.25°C at +25°C and ±1.0°C from -40°C to +85°C, and provides 1500Vrms input-to-bus isolation with 150Vrms continuous channel overload protection. Each channel has hardware low-pass filtering for 50Hz/60Hz rejection, a scan rate of 200 channels per second, and alarm functionality. It uses spring cage terminal blocks for field connections and measures 114.6mm × 15.3mm × 82.8mm. The module is Heavy Industrial CE compliant and UL/cUL Listed for Class I, Division 2, Groups A, B, C, D. Operating temperature ranges from -40°C to +85°C.
The MAQ20 thermocouple analog input modules have 8 differential input channels. Separate models are offered for interfacing to Type J, Type K, Type T and Types R and S thermocouples. Cold Junction Compensation uses four internal sensors resulting in industry leading measurement accuracy in any system configuration and over the entire system operating temperature range. All channels are individually configurable for range, alarm limits, and averaging to match the most demanding applications. High, Low, High-High and Low- Low alarms provide essential monitoring and warning functions to ensure optimum process flow and fail-safe operation. Hardware low-pass filtering in each channel provides rejection of 50 and 60Hz line frequencies. Field I/O connections are made through spring cage terminal blocks with four positions provided for the termination of wiring shields.
Input-to-bus isolation is a robust 1500Vrms and each individual channel is protected up to 150Vrms continuous overload in case of inadvertent wiring errors. Overloaded channels do not adversely affect other channels in the module, thereby preserving data integrity.
Channels in a module can be selectively enabled for scanning. All channels are enabled by default; however, non-used channels can be disabled to increase the sampling rate of enabled channels.
Input ranges are selectable on a per-channel basis. The MAQ20-JTC, -KTC, -TTC and -RSTC modules have two to four user selectable input ranges, depending on the model. Over-range and under-range up to 2% beyond the specified input values is allowed. Sensor linearization is performed in the module, and accuracy is guaranteed to ±f.s.
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| Dataforth Corporation | |
|---|---|
| Product Category | Data Acquisition |
| Product Number | MAQ20-JTC |
| Product Name | Analog Input Module; Type J Thermocouple, 8-ch |
| Data Acquisition | Input Module |
| Form Factor | DIN Rail |
| User Interface | None |
| Application | General Lab & Industrial |
