IECEx ATEX Wireless Transmitter Module | X24-ACMi-SA

Approved for use in ATEX / IECEx Zones 1 and 2

  • Lead Time: 1 week
X24-ACMi-SA ATEX Wireless Transmitter Module

At a Glance

  • For use with all T24 and X24 Modules
  • Powered by Energizer L91 Batteries
  • Drives up to 4 x 350 ohm Load Cells
  • Up To 30 Days Continuous Operation
  • Operating Temperature -20 °C to +50 °C
  • IP67 Rated Enclosure
  • Approved for ATEX / IECEx Zones 1 and 2
  • High Resolution Ratio-Metric/Bridge Measurements
  • Extremely Low Temperature Drift
  • High Transmission Rates up to 200 Hz
  • IP67 Immersion Protected Enclosure
  • Fantastic Transmission Range – Up to 800 metres! 


The X24-ACMi-SA ATEX wireless transmitter module is designed to measure strain input in ATEX / IECEx zones 1 and 2 and transmit them to X24 or T24 wireless telemetry receivers, such as the X24-HD ATEX wireless portable display.  It is approved to use in hazardous ATEX / IECEx zones 1 and 2.  It works with both the T24 acquisition modules and the X24 modules.

Its high accuracy ratio-metric input and extremely low temperature drift allows for calibration and linearisation for pressure, force, torque and weight measurement in explosive atmospheres zones 1 and zone 2.  Plus, it has up to 1 part in 400,000 (18.75 bits) noise-free resolution.

It has a long transmission range of up to 800m (1/2 mile) with its omni-directional antenna removing the need to house a separate external antenna.  The X24-ACMi-SA ATEX wireless transmitter module uses easily available Energizer L91 batteries which have a battery life of up to 5 years, with continuous operation of 30 days.  It has an operating temperature of -20°C to +50°C and a storage temperature -40°C to +85°C.

The X24-ACMi-SA ATEX wireless transmitter module is capable of driving up to four 350 ohm strain gauges bridges attached in parallel.

If you need an ATEX wireless transmitter module to fit inside a sensor, try our X24-SAe Wireless ATEX OEM Transmitter Module which is the bare PCM module.

Click the image to see how ATEX transmission is possible in your application.

Please contact our expert sales team using the quick enquiry form on the right, call us on +44 (0) 1189 817339, or send an email to and we will be happy to assist you with your enquiry.

Technical Specifications

Measurement SpecificationsUnits
Strain Gauge Excitation System4wire
Strain Gauge Excitation5Vdc
Strain Gauge Resistance (min)85
Strain Gauge Sensitivity (max)±3.1mV/V
Offset Temperature Stability (max)4ppm/°C
Gain Temperature Stability (max)5ppm/°C
Non Linearity Before Linearisation (max)25ppm of FR
Internal Resolution/Bits16,000,000 / 24
Noise Free Resolution at 1 Sample Per Second400,000 / 18.75
Transmission RatesFrom 5ms to 1 day
Environmental Specifications
Operating Temperature Range-20 to +50°C
Storage Temperature Range-40 to +85°C
Humidity0 to 95%RH
Radio TypeLicense Exempt Transceiver
Radio Frequency2.4GHz
Transmit Powre10mW
Rangeup to 800m
Power Supply
Power Supply Voltage2.1 to 3.6Vdc
Must use Energiser L91 batteries.
Battery Life in Low Power Mode with 350R Load Cell
Pair Energiser L91 Lithium AA cells:Battery Life:
Constantly on transmitting at 3Hz30 days
12 sessions per day of 5 minutes at 3Hz2 years
Constantly on transmitting every 20 secs5 years

Product Dimensions

X24-ACMi-SA ATEX Wireless Transmitter Module Outline Drawing