Wireless Sensor Transmitter for K-Type Thermocouple Acquisition T24-ACMi-TCA

The T24-ACMi-TCA is a high-performance wireless temperature transmitter designed for direct connection to K-type thermocouples. Housed in a rugged IP67-rated ACMi enclosure, it forms part of the Mantracourt T24 modular telemetry range and enables reliable, real-time wireless transmission of temperature data across a broad range of applications.

This module accepts a single K-type thermocouple input and supports a wide measurement range from -200 °C to +1300 °C (-328 °F to +2372 °F), delivering fast and accurate temperature readings in both ambient and extreme environments. It is particularly well-suited to construction, industrial heating, R&D, and predictive maintenance applications where embedded or remote monitoring is required.

Using a licence-free 2.4 GHz DSSS radio band, the T24-ACMi-TA transmits secure, interference-resistant data with a wireless range of up to 800 metres (2,600 feet) line-of-sight. The integral antenna and compact IP67 enclosure make it easy to install in harsh environments, while full compatibility with all T24 receivers—including handhelds, relay modules, PLCs, PCs, and the SensorSpace cloud platform—offers complete system flexibility.

Designed for long-term use in battery-powered systems, the T24-ACMi-TA features ultra-low power operation with configurable transmission intervals ranging from once per day to 200 samples per second. The module can be remotely placed into low-power sleep mode and reactivated over the air by other T24 devices, supporting efficient remote monitoring and power management.

Setup, calibration, and diagnostics are performed wirelessly using the free T24 Toolkit software, with calibration data stored internally to simplify field deployment and system integration.

Typical Applications

Embedded temperature monitoring in concrete curing
High-temperature process equipment and industrial heating systems
R&D and test laboratory setups
Predictive maintenance for rotating or high-stress machinery

Module transmits and receives, offering:

Full error detection and correction
Calibration and configuration via radio telemetry
Ability to be switched from sleep to operating mode via radio
Thermocouple calibration stored within the module
Remote battery check
Data encryption for complete security (128-bit AES)

Maximum range achieved in open field site with the T24 acquisition module at a height of 3 metres (9.8 feet) above ground and T24-HS held at chest height pointing towards the acquisition module. Specification at 3V supply at 25°C.

Product Features and Benefits

Wireless transmitter for K-type thermocouples with direct sensor input
Wide temperature measurement range: -200 °C to +1300 °C (-328 °F to +2372 °F)
Compact IP67-rated ACMi enclosure with integral antenna
Wireless range up to 800 m (2,600 ft) line-of-sight
Optimised for fast response and accurate readings in both static and dynamic applications
Ultra-low power consumption with configurable transmission intervals (1/day to 200/sec)
Remote sleep/wake control via T24 wireless network
Compatible with all T24 receivers including handhelds, PLCs, analogue outputs, and cloud systems
Wireless configuration, calibration, and diagnostics using free T24 Toolkit software
Internal storage of calibration data for quick deployment
Full error correction and 128-bit AES encrypted transmission for secure data integrity

Specification

Measurement Specification

Temperature Range	-200 to 1300°C
Accuracy -50 to +0 °C	± 2°C
Accuracy 0 to 1000 °C	± (0.5% + 1)°C
Accuracy 1000 to 1300 °C	± (0.8% + 1)°C
Internal Resolution	16,000,000/ 24 Resolution/bits
Noise Free where Sample Time < 5ms	13,000 / 13.5 Resolution/bits
Noise Free where Sample Time < 10ms	17,000 / 14 Resolution/bits
Noise Free where Sample Time < 100ms	62,000 / 16 Resolution/bits
Noise Free where Sample Time > 1000ms	0.1 %FR
Noise Free where Sample Time < 10ms	5,000 / 12.5 Resolution/Bits
Noise Free where Sample Time < 100ms	6,000 / 12.75 Resolution/Bits
Noise Free where Sample Time < 1000ms	10,000 / 13.25 Resolution/Bits
Noise Free where Sample Time > 1000ms	158,000 / 17 Resolution/bits

Environmental

Operating temperature range	-20 to 55 ºC
Storage temperature range (no batteries)	-40 to 85 ºC
Maximum humidity	95%RH
Environmental protection	IP67

Power Supply

Standby / Low Power Mode	5-20 μA
Normal Mode on constantly	40-45 mA

Battery Life in Low Power Mode

Generating Results at 3Hz

Pair AA cells constantly on	1 month
Pair AA cells 12 sessions per day of 5 mins	2 years
Pair D cells constantly on	4.5 months
Pair D cells 12 sessions per day of 5 mins	> 9 years