Wireless Current Transmitter | 0-20mA / 4-20mA Sensor Input | T24-IA

At a Glance

Description

The T24-IA wireless current transmitter module enables high accuracy wireless measurement of signals from 0-20mA and 4-20mA current output sensors such as pressure transmitters, LVDT displacement sensors and level/depth sensors.

Transmission ranges of up to 600 metres are possible using the internal antenna, while the use of an external antenna increases transmission range up to 800 metres.

The T24-IA wireless current transmitter module requires a power supply of just 3Vdc to operate which is typically provided by 2x ‘AA’ batteries and provides a highly stable, high resolution signal that can be received by any of the T24 range of 2.4GHz telemetry instrumentation.

Output rates of up to 200 readings/second are possible at a noise-free resolution of 1 in 5000, increasing to 1 in 30,000 at a reduced output rate of 1 reading/second or less.

The compact T24-IA transmitter module can be integrated into load cells and other sensors if sufficient space is available.  Alternatively, it can be mounted into either the T24-ACM(2x ‘D’ size batteries) or T24-ACMi (2x ‘AA’ size batteries) battery-powered modules to complete your wireless sensor.

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

Technical Specifications

Radio	Min	Typical	Max	Units
Licence		Licence Exempt
Modulation Method		MS (QPSK)
Radio Type		Transceiver (2 way)
Data Rate		250		K bits / second
Radio Frequency	2.4		2.4835	GHz
Power		10		mw
Range*			800	Metres
Channels (DSSS)		15
*Tests conducted in an open field site with the transmitter at the top of a 3m pole. The receiver was mounted 1.5m off the ground.
Input Range Sensitivity (FR)	0	-	21	mA
Calibrated Range	4	-	20	mA
Gain Temperature Stability		-	50	ppm /˚C
Offset Temperature Stability			0.5	ppm /˚C
Non Linearity before Linearization		5	25	ppm of FR
Internal Resolution		16,000,000 / 24		Resolution/Bits
Input Impedance	-	47	-	Ohms
Input Calibration Accuracy	-	-	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		30,000 / 14.75		Resolution/Bits
Transmission Rates	From 5 ms to 1 day
Excitation Available	5 Vdc @ 50 mA
Power Supply
ACMi and OEM Module	2.1		3.6	Vdc
ACM	5		18	Vdc
Normal Mode on Constantly		40	45	mA
Standby Mode / Low Power Mode		5	20	uA
Battery Life - Transmitting results at 3 per second, no excitation required	Usage	Battery Life
Pair AA cells	Constantly on	1 month
Pair AA cells	12 sessions per day of 5 minutes	2 years
Pair DD cells	Constantly on	4.5 months
Pair DD cells	12 sessions per day of 5 minutes	>9 years
Environmental
Operating Temperature Range	-20		55	°C
Storage Temperature Range (no batteries)	-40		85	°C
Humidity	0		95	%RH
IP Rating (ACM and ACMi)	IP67/Nema4

Enclosure	ACM	ACMi	ACMm
Wireless Range / m	800m (2,600 ft)		500m (1,600 ft)
Power Supply	3-18 Vdc or 2xD cell	3 Vdc (2xAA)	3 Vdc (2xAAA with BB1)
Battery Life at 1 transmission per second*	1 year	5 months	2 months
Antenna	ANTA	ANTA	PCB Printed
Radio Frequency	2.4 GHz
Operating Temperature /˚C	-20 to +55	-20 to +55	-40 to +80
Environmental Protection	IP67		IP50
Module Size / mm	164 x 84 x 57	80 x 62 x 34	76 x 35 x 20
Software & Configuration	T24 Toolkit & T24LOG100

Product Dimensions

Ordering Codes & Options

Code	Description
T24-IAe	Wireless Radio Telemetry Current (4-20mA) Acquisition Module + external antenna (must be ordered separately)
T24-IAi	Wireless Radio Telemetry Current (4-20mA) Acquisition Module + internal antenna