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A723 addIT Series 4

A723 addIT Series 4 radio modem


The A723 addIT is Adcon's best selling RTU - a very compact yet powerful integrated data logger with a 10mW UHF modem inside. In its robust aluminum case and a wealth of I/Os it is suitable for a large variety of applications, from agriculture to water management, from hydrographics to municipal leak detection.

  • IP-67; Ultra low power design; Cost effective solution if a number of sites are close to each other; 1km radio range
  • Radio communication (432-470MHz), 10mW
  • 6 analog 0 … 1/2,5VDC (3 channels also support 0 … 150mV); 2 pulse counter (2x 30Hz counters); 2 digital I/O (expandable with A553 up to 14 digital I/O's), 40 SDI-12 values

SDI-12 Adapter on-board
You can connect up to 40 SDI-12 sensors to the internal adapter of the A723 Series 4. No external SDI-12 adapter is required. Use a standard 7-pin Binder cable as for all other sensors, plug it in, set the driver in the Gateway - done!

Resolution of A/D Converter
The powerful Renesas CPU of the Series 4 addIT provides true 12-Bit resolution. This reduces the max. error caused by AD conversion from 0.1% to 0.025% Thanks to a highly accurate voltage reference this resolution is available over the full temperature range of the RTU, from -30°C to +70°C.

Stabilized Excitation Power
Ratiometric sensors require a stable excitation power. A723 Series 4 lets you select unregulated battery power, ranging from 5.6V to 7.5V, or stabilized and accurate excitation power from 3.3V to 5.5V

Asynchronous Sampling
While by default all sensors are sampled in the same instant, you can now choose to first sample Port A, then Port B. This is advisable for all sensors that might influence each others readings, eg. because they are sitting in a conductive media like water or wet soil.

Pulse Counter Frequency
Count up to 30 pulses per second. That is of particular importance for high speed rain gauges, such as the new Pluvio from OTT Hydrometry, but also for conventional mechanical water and gas meters, and for electromagnetic flow meters.

30% more Battery Power, 80% more Solar Power
A723 addIT Series 4 comes with an industrial grade NiMH battery that can resist temperatures of up to 70°C (158°F) and offers superior capacity of 2100mAh. In order to get a proper charge into this battery the addIT's panel has 220mA output power at 9.2V.

More Memory for Data and Firmware
Higher resolution, more SDI-12 sensors, and more options to store sensor values have made an increase of memory capacity a must. Thus Series 4 offers 4 times more memory than Series 3.

Firmware Upgrade without opening the case
Support staff will love this feature! The firmware of the RTU can be upgraded without having to open the case. Just connect the standard A720SC serial communications cable (item 200.720.540) into the power port and reflash your CPU.

Same Sensor Connectors as in A733
A723 Series 4 uses the same connectors to plug in sensors and solar panels as are used in the A733 series of RTUs, reducing the number of spare parts you have to keep on stock. This type of connector boards comes with external gaskets to improve the RTUs corrosion resistance.

A723 Series 4 uses a robust aluminum case and sturdy Binder connectors, made in Germany, that have proven to work very well since their introduction in 1998. Power consumption is extremely low, and our postcard sized solar panels are sufficient to run the show.

Connect up to 6 analog sensors from our range of environmental equipment, 2 pulse counters, 2 TTL signals (in or out) and up to 40 SDI-12 sensors. A good installation can yield distances of 1000m and more (3.000ft).

A723 addIT Series 4 is fully compatible to all current Adcon long range devices, A731/A751 addRELAY, A733/A753 addWAVE, and to the Telemetry Gateway and RA440 Remote Wireless Modem. It can thus easily be integrated into existing networks.

A Telemetry Gateway running a firmware version older than 2009 will have to be upgraded in order to support the new features of A723 Series 4!
Please note that A723 Series 4 is not compatible to A720, A730MD and A730SD!

The addITs are particularly popular in agriculture. Optimizing irrigation systems requires the installation of soil moisture sensors in large numbers within limited areas. With several soil moisture

Leaflet - A723 addit Series4
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Case Aluminum, powder-coated
Protection type IP-67
Dimensions & Weight 100 x 70 x 40 mm; 450g
Connectors 2 x Binder M9 7-pin female (Sensor)
1 x Binder M9 5-pin female (Power)
Mounting Mast mounting bracket
Temperature range -30°C ... +70°C
Power Supply internal 6.2V NiMH battery w. 2200 mAh, charged by solar panel or mains adapter
6 analog inputs 0...2.5 V with 12-Bit resolution or
0...1V with 11-Bit resolution
2 counter Inputs for standard reed switches as used eg. in rain gauges or water meters. Max. frequency 30 pulses per second; min. pulse length 17ms, min. break time 17ms
SDI-12 port: On-Board via I/O port A. Accepts up to 40 sensor values
2 Digital I/O's Configurable as either TTL-inputs for status control or as TTL-outputs to switch a relay (might require relay amplifier interface ADI-24)
Sensor Excitation Stabilized: adjustable from 3.3V to 5.5V
Unregulated: feeds battery voltage to the sensors, from 5.6V to 7.5V
Memory 64KB for up to 20.000 readings (dep. on type of sensors attached)
Transmission distance up to 1.000 m (depending on topography)
Tx Output Power 10mW
Rx Sensitivity -110dBm
Frequency range 432 ... 470MHz
Type Approvals R&TTE, CE, FCC, Ind.Canada, ACMA Australia
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