ATEX / IECEx Telemetry Strain Transmitter ModuleX24-ACMi
SKU: X24-ACMi
Description
ATEX / IECEx telemetry transmitter module measures strain input and periodically transmits data for receipt by X24 or T24 receivers.
Housed in an environmentally sealed IP67 enclosure with battery holder for two Lithium Energiser L91 AA batteries.
This intrinsically safe board is approved for both Gas Zone 1 and 2 and Dust Zones 21 and 22.
High accuracy ratio-metric input allows for calibration and linearisation for pressure, torque, force and weight measurement in explosive atmospheres.
The X24-ACMi provides 5 V excitation to drive transducer loads down to 85 ohms. This transmitter is highly accurate, low noise and uses up to nine point linearisation giving quality measurements from a wide range of strain bridge transducers.
This flexible transmitter supports a wide range of bridge sensors and is ideal for places that are difficult for a wired connection.
Product Features & Benefits
- Approved for use in explosive atmospheres Zone 1, Zone 2, Zone 21, Zone 22
- Facilitates construction of certified load cells and products
- 800 m (½ mile) range
- Long battery life: 2 years at 12 sessions of 5 minutes per day; 30 days continuous
- High accuracy, extremely low temperature drift
- High resolution ratio-metric/bridge measurement
- Up to 1 part in 400,000 (18.75 bits) noise free resolution
- Bipolar input, up to ±3.2 mV/V or up to ±20 mV/V
- Calibration and linearisation to engineering units
- Capable of driving 4 X 350 R load cells
- Up to 200 Hz transmission rates
- 5 V bridge excitation
- Compatible with X24 receiver and T24 receivers
- Efficient omnidirectional antenna removes requirement for external enclosure antenna
- Environmentally sealed to IP67 in robust enclosure
- Operating temperature range of -20 °C to +50 °C
- Uses readily available Energizer L91 batteries
Specifications
Specification with 1000R bridge, 2.5mV/V, at 3V supply at 25°C
| Measurement Specifications | |
|---|---|
| Strain gauge excitation system | 4 wire |
| Strain gauge excitation | 5 Vdc |
| Strain gauge resistance (min) | 85 Ω |
| Strain gauge sensitivity (max) | ±3.1 mV/V or ±20 mV/V |
| Offset temperature stability (max) | 4 ppm/ºC |
| Gain temperature stability (max) | 5 ppm/ºC |
| Non linearity before linearization (max) | 25 ppm of FR |
| Internal resolution/Bits | 16,000,000 / 24 |
| Noise free resolution at 1 sample per second | 400,000/ 18.75 |
| Transmission rates | From 5ms to 1 day |
| Environmental | |
|---|---|
| Environmental protection | IP67 |
| Internal | |
|---|---|
| Battery Supply Voltage | 2.1-3.6 Vdc |
| Estimated Battery Life Using Energizer L91 AA Batteries | |
|---|---|
| Standby Mode (Powered Off) | >5 Years |
| Continuous Operation | 54 Hours |
Dimensions
80mm X 62mm X 34mm (Not including cable gland)
Downloads
Videos
FAQ
| Q | What are the different ATEX zones? |
| A | Zone 0 – Permanently or frequently hazardous over long periods.
Zone 1 – Occasionally hazardous. Zone 2 – Rarely or temporarily hazardous Safe Zone – No hazard |
| Q | Can I use any AA batteries in the X24 devices? |
| A | No! The devices are all ATEX certified only with Energiser L91 lithium AA batteries. Fortunately these are readily available around the world.
If you are using the OEM board, refer to the manual for power supply requirements. |
| Q | Can I change the batteries in Zone 1 or Zone 2? |
| A | No! The device needs to be moved to the safe zone before changing batteries. |
| Q | The X24-HD looks complicated – is there a simpler option? |
| A | Its only as complicated as you make it. Out of the box you just need to select the group key and radio channel to receive all X24/T24 transmitters in that group. |
| Q | What sound level does the buzzer emit? |
| A | The buzzer used for overload indication and keypad feedback has an output level of 45 dBA. |
| Q | Is logging function available on the handheld? |
| A | X24 has no logging feature |
| Q | Do you need a QAR/QAN if wiring the X24-ACMi-SA cased transmitter to a suitably approved ATEX/IECEx sensor? |
| A | No, providing the instructions in the manual are followed and the ‘specific conditions of use’ (ATEX) or the ‘conditions of certification’ (IECEx) are adhered to. |
| Q | Are the same batteries needed for the X24-SAe if battery powering? |
| A | Providing the batteries have the required component approval then the choice of batteries need not be limited to the Energizer L91 Lithium Batteries |
| Q | Are there any limitations on resistance of the bridge? |
| A | The resistance of the strain gauge can be between 85 and 5000 ohms. |
| Q | Is the Strain gauge input suitable for both tension and compression load cells? |
| A | The strain gauge measurement is bi-directional ranging from -3.2mV/V to +3.2mV/V making it suitable for tension and compression load cells. |
| Q | Â Is it possible to setup the transmitter inside the EX area? |
| A | No, you would need to take the equipment out of the EX area to set it up or change the batteries. |
| Q | Is the X24-SAe available only with an ANT-A? |
| A | That is correct, the T24-Sae is permanently connected to the ANT-A antenna. The cable has a fixed cable length of 45 mm |
| Q | Will the X24-ACMi work with a special battery pack? |
| A | It is only certified to be used with internal AA Energizer L91 batteries. |
| Q | Is the system capable of handling a 4 load cell weighing system or only one load cell? |
| A | The resistance of the strain gauge can be between 85 and 5000 ohms. The X24-SAe can support up to four 350 ohm strain gauges bridges attached in parallel (At the expense of reduced battery life). |
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