T24-RA - Wireless Telemetry Potentiometer Acquisition Module

The T24-RA Wireless Telemetry Potentiometer Acquisition module is a high performance wireless device designed for the collection and processing of resistance related measurements. The T24-RA measures resistance and periodically transmits it.

Low power modes allow the T24-RA wireless current sensor acquisition module to ‘power down’ between transmissions or to ‘power off’ completely and can be controlled by other T24 products such as the handheld displays or a base station. The module can be configured to last several years on 2 x alkaline AA batteries or alternatively powered from 2 x NiMH or 1 x 3V Lithium.

The high accuracy, low noise measurement electronics in the T24-RA deliver high resolution, low drift results which can be user calibrated over 9 points to enable linearization and to deliver results in user definable engineering units. The results can be transmitted wirelessly to other T24 devices such as handheld displays, analog outputs and base stations etc.

Although the T24-RA modelo can be used ‘as is’ for OEM solutions there are a number of enclosure options available.

Integral antenna option offers up to 800m (2600 ft) range and external antenna options allows up to 800m (2600 ft) range in an open field site. 

The licence free 2.4 GHz direct sequence spread spectrum (DSSS) radio telemetry technology offers high integrity, error free communications which can co-exist with other wireless technologies such as Wi-Fi, Bluetooth® and Zigbee®. FCC, ETSI and IC approvals. 

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Technical Specifications

T24-RA 

General Radio

	Min	Typical	Max	Units
Licence		Licence Exempt
Modulation Method		MS(QPSK)
Radio Type		Transceiver (2 way)
Data Rate		250		K bits/sec
Radio Frequency	2.4000		2.4835	GHz
Power		1		mw
Integral Antenna			120 (400)	Metres (feet) *
External Antenna			800 (2600)	Metres (feet) *
Channels (DSSS)		16
*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

T24-RA
Measurement	Min	Typical	Max	Units
Sensor Excitation Voltage	2.45	2.5	2.55	VDC
Input Range	500	-	100,000	Ohms
Accuracy	-	0.01		% of full scale
Electical	Min	Typical	Max	Units
Power Supply Voltage	2.1	3.0	3.6	VDC
Power Supply Ripple			50	mV ac pk-pk
Power Supply Current	Min	Typical	Max	Units
Normal Mode (Non Low Power Mode)		35	65	mA
Standby / Low Power Mode		5	40	uA
Environmental	Min	Typical	Max	Units
Operating Temperature Range	-40		+85	C
Storage Temperature	-40		+85	C
Humidity	0		95	%RH
Physical
PCB Dimensions	16.8 x 37 x 6.5mm

   Module transmits and Receives giving: 1. Full error detection and correction 2. Ability to switch to low power modes 3. Calibration & configuration via radio telemetry 4. Ability to be switched from sleep to operating mode via radio 5. Calibration stored within the module 6. Remote battery check

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Order Info

T24-RA Module	Code
Potentiometer Acquisition with fitting for External Antenna	T24-RAe
Potentiometer Acquisition with Internal Antenna	T24-RAi

Documents and Files

	File	Date	Size
	Wireless sensing OEM module T24-RA datasheet (English)	28-08-2015	910KB
	Wireless telemetry potentiometer acquisition module T24-RA manual (English)	28-08-2015	1.5MB
	T24 telemetry systems user's manual (English)	02-08-2021	12.3MB
	T24 Toolkit v02.15.04 software - Configuration, calibration and testing of T24 range telemetry products	15-06-2023	7.0MB
	T24 QuickView 2.2.0 software - Data visualization and acquisition with base station T24-BSu	15-06-2023	2.4MB
	T24LOG100 v05.20.00 software for data acquisition up to 100 wireless modules	15-06-2023	14.2MB
	T24 Windows Drivers - Development files (DLLs, COM drivers - ActiveX, .NET, LabView)	16-10-2018	6.2MB