T24-IA0 pages

T24-VA & T24-IA
New Generation Telemetry Voltage & Current Acquisition Modules
Features

2 way radio system for data integrity
Very low power consumption for long battery life
Very small size
Worldwide licence exempt 2.4 GHz radio
Option of hand held remote display or PC interface for data capture
Remote power on/off (sleep/wake)
120 metre (400 feet) range maximum
Simple configuration and calibrated via PC using base station with
Telemetry Toolkit software
Internal or external antenna options

Introduction
The T24-VA & IA are high performance voltage (0-10V) and
current (0-21 mA - calibrated to a 4-20mA range) to radio telemetry
converter modules, offering precision measurement with high performance
two-way telemetry. Usable around the globe on licence-free 2.4GHz
frequency, the T24 range avoids local radio interference to ensure data
integrity and security. For use in any measuring applications, from torque
to weight, vibration to flow, the T24 offers users a complete solution to
your measurement requirements.
The modules form part of a simple measurement system that offers the
opportunity to collect measurements from a variety of sources, enabling
accurate and immediate data collection without the requirement for
extensive and labour intensive cabling operations.

Transmitting from a analogue module on 2.4 GHz to a variety of receivers
including a user friendly simple 2 button handheld T24-HS which captures
this data and displays it providing a line of sight communication range of
typically 120 metres. The T24-HS also performs the function of waking the
T24-VA when it is turned on and sending it to deep sleep module when it is
turned off.
The wide temperature operating range and the robust technology ensures
that the module is not susceptible to harsh physical or electrical
environments. Options include internal or external antenna and a growing
range of interface modules.

Specifications
General Radio
Min

Typical

Licence

Max

Units

Licence Exempt

Modulation method

MS (QPSK)

Radio type

Transceiver (2 way)

Data rate

250

Radio Frequency

K bits/sec

2.4000

2.4835

GHz

120 (400)

Metres (feet) *

200 (650)

Power

Metres (feet) *

1

mw

Range RAD24i (Integrated antenna)
Range RAD24e (External antenna)
Channels (DSSS)

16

* Maximum range achieved in open field site with T24-VA/IA at a height of 3 metres above ground and T24-HS held at chest height pointing towards the T24-VA/IA.

T24-VA – Embedded Voltage 0-10V Digitiser
Specification at 3V supply at 25 Deg C

Measurement
Input Range Sensitivity (FR)

Min
0

Internal Resolution

Units
Volts

50

ppm/◦C

5

Non Linearity before Linearization

Max
10

-

Gain Temperature Stability

Typical
-

25

16,000,000/ 24

ppm of FR
Resolution/Bits

Input Impedance

-

100,000

-

Ohms

Input Calibration Accuracy

-

-

0.1

%FR

Noise Free where Sample Time < 10mS
Noise Free where Sample Time < 100mS

5,000 / 12.25
8,000 / 13.0

Resolution/Bits
Resolution/Bits

Noise Free where Sample Time < 1000mS

11,000 / 13.5

Resolution/Bits

Noise Free where Sample Time > 1000mS

15,000 / 13.75

Resolution/Bits