A753 addWAVE UHF

A753 addWAVE Series 4 is a powerful universal data logger that provides high analog resolution, many different I/O channels, lots of memory and extreme flexibility and expandability. It is nonetheless very easy to use and install, and has maintained the low-power approach of previous generations, perfectly capable of operating off our little solar panels.

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Description

A753 addWAVE UHF

A753 addWAVE Series 4 is a powerful universal data logger that provides high analog resolution, many different I/O channels, lots of memory and extreme flexibility and expandability. It is nonetheless very easy to use and install, and has maintained the low-power approach of previous generations, perfectly capable of operating off our little solar panels. It is the perfect tool for professional users that want to establish and manage large scale measurement networks.
  • Compact data logger with integrated UHF modem
  • IP-67 ultra-low-power design, WMO compliant measurement methods, high analog resolution, large integrated memory (2MB = ~6 months of data for 15-minute-readings), 5-20km transmission range, repeater functionality
  • UHF radio (430-470MHz) with 500mW
  • 12 x analog 0…1/2,5VDC (3 channels also support 0…150mV); 4 pulse counters (2x 500Hz fast counters / 2x 50Hz counters); 4 digital I/O’s (expandable with A553 to up to 52 digital I/O’s); 40 SDI-12 values; Modbus via adapter

Applications

For which applications is A753 particularly well suited? Here are a few examples:

Agriculture
It’s easy to install and easy to maintain, yet very robust with low maintenance requirements. Compatible with all Adcon sensors it offers a lot of expansion options and is ideally suited to monitor diseases, evapotranspiration, soil moisture and temperature and other parameters.

Professional Weather Stations
The professional meteorologist expects his equipment to provide high resolution, wide temperature ranges, WMO compliant measurement methods, particularly for wind gust monitoring, lots of expansion options, lots of memory, flexible sampling intervalls, and more – all this and more are part of A753’s feature set, its compact design and low price notwithstanding.

Environmental monitoring of water and air quality
Thanks to the SDI-12 sensor standard a large number of multi-parameter probes has surfaced on the market, especially such for monitoring up to 16 water quality parameters simultaneously. A753 supports up to 40 SDI-12 sensor values, and 12 additional analog channels for 0-1/2,5V output signals with 16-Bit resolution across the RTU’s full operating temperature range.

Flood warning and rain intensity monitoring
Many countries require data loggers to store the date and time of each pulse of a rain gauge in order to accurately calculate rain intensity. A753 can do even more, and additionally store up to three analog values, read at the same time as the pulse, e.g. wind speed and direction.

Detecting pressure hammers in water distribution pipelines
Using the measuring method originally developed for wind gust monitoring it is now also very easy to detect pressure hammers, which can cause a lot of damage to pippelines. Reading pressure 4 times per second and calculating a 3-second average, the highest of which is stored and transmitted, it becomes easy to accurately spot when and where such a pressure hammer has occurred.

Other applications

  • Monitoring equipment with high frequency
  • Access control
  • Frost warning
  • Leak detection
  • Level metering in ground and surface water bodies
  • Soil moisture monitoring
  • and much much more

Resources

Leaflet – A753 addwave UHF

Technical Data

Mechanics:
Case Aluminum, powder coated
Protection class IP-67
Dimensions / weight 160 x 60 x 80 mm / 1.200 gr.
Connectors for sensors and power 4 x M9 female 7-pin to sensor
1 x M9 female 5-pin to power
Made in Germany by Binder
Sockets: brass, nickel plated, with gold plated socket contacts; IP-67 protection class
protective caps
Antenna connector TNC with external seal, IP-67, Made in Germany
Mounting Mast mounting bracket, integrated
Operating temp. -30°C … +75°C
Logger:
I/O channels 60
Analog inputs 12 x 0…1V/2.5VDC (3 channels on Port C can be programmed to a measuring range of 0 – 150mV DC low temp. drift with internal amplification)
Digital inputs 40 x SDI-12 Values
Counter inputs Total of 4 inputs:
2 for standard reed switches, debounced, e.g for rain gauges; max. 50 pulses per second. Min. pulse length 17ms, min. break time 17ms
2 for fast puls generators, e.g. wind speed sensors or flow meters; max. 500 pulses per second. Min. pulse length 1ms, min. break time 1 ms.
TTL In- / Outputs 4 x TTL compatible status inputs or switching outputs, programmable; of which 1 x 5V (Port A) and 3 x 3.3V (all others)
Analog resolution 16-Bit
Sensor excitation voltage Programmable:
– Unregulated battery voltage from 5.5V … 7.5V
– Stabilized voltage, programmable from 3.3V … 5.5V in 0,1V increments
Memory 2MB for up to 500.000 values, depending on types of sensors attached (SDI-12 typically needs more memory than analog). Example: 15-minute data of an ETo station can be stored for 6 months.
4MB: ex works the A753 can also be equipped with 4MB of memory to double it’s storage capacity beyond 1 year for a standard ETo station.
Special Logger functionality:
Wind gust monitoring Port C + Adcon wind sensor: 4 samples per second, 4 times per second calculation of 3-second average; Date and time of gust stored
Wind vector monitoring Port C + Adcon wind sensor: wind direction is measured simultaneously with speed, weighed depending on speed, and stored as a vector
Rain intensity monitoring Port D + rain gauge with pulse output (max. resolution: 1 second). Date and time of ech pulse are stored; in addition up to 3 analog signals and 2 counter inputs can be stored, e.g. wind speed and air temperature
Pressure hammer detection Port C + Adcon manometer sensor: manometer is permanently powered, sampled 4x per second, and a 3-second average is stored
Low Voltage Amplifier Port B: sensors with an analog output of 0-150mV can be connected directly; internal amplifier
Asynchronous sampling To prevent sensors from influencing each others readings when read simultaneously, ports can be sampled sequentially
Event-Monitor To rapidly detect status changes on a digital input it can be sampled up to once per second; date and time of each status change are put in memory; attention: with frequent status changes this can generate a lot of data! Applications: error detection on equipment, access control, pump monitoring, etc.
Data transmission:
Frequency ranges Band 1: 430 … 440 MHz
Band 2: 440 … 450 MHz
Band 3: 450 … 460 MHz
Band 4: 460 … 470 MHz
Modem Made by Adcon Telemetry
Antenna Omni directional, vertical, TNC jack, +2dBi
General:
Power Supply internal 6.2V battery, charged by solar panel or mains power supply
Battery Panasonic Hi-temperature cell, industry grade, NiMH, 3300mAh
Type approvals FCC, R&TTE, CE, Industry Canada, ACMA Australia

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