Products

Aquagauge^TM liquid level sensors operate by measuring the capacitance of an anti-fouling polymer coated cable immersed in an aqueous liquid. Each sensor contains a microprocessor, preprogrammed with calibration values matched to the dielectric signatures of the above-liquid and under-liquid sections of the cable. The microprocessor analyses the signal and computes level every few seconds. The level, and temperature within the transmitter case, are sent either wirelessly by RF transmission or serially via wires to the data display. Rainwater, seawater, alcohol solutions etc. produce virtually equivalent results and water containing suspended sediments, organic matter and most other commonly encountered contaminants can usually be monitored without problems. A corrosion resistant version of the system is available for use in aggressive liquids and the sensing elements are all manufactured from low maintenance freeze-tolerant materials.

**New** Differential pressure water level sensor option now available for all Aquagauge products. Suitable for depths up to 30 meters.

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The SG-ELECTRODE lead-acid battery electrolyte specific gravity (SG) sensor is based on our unique polymer-membrane electrode, designed to measure water concentration in sulfuric acid/water mixtures. The electrode is placed through the watering port of an individual battery cell so that the tip of the probe is immersed in the battery electrolyte. Equilibration (to 90%) between the electrode sensing elements and the acid solution usually occurs in about 5 minutes and readings of the composition can then be made at regular intervals ranging from seconds to hours.

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m2m-manager is a versatile CDMA or GSM mobile phone SMS exchange system enabling a wide range of sensors to be monitored, relays to be operated and alarms to be received. As an example, by combining the unit with our AQUAGAUGE liquid level measuring probe, it is possible to remotely determine water level in a variety of situations including rainwater tanks, reservoirs, rivers, oceans etc. Pumps can be activated and low or high level warnings received, all from thousands of kilometers away.

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The CB-Monitor telemetry system reduces the requirement for visits to outlying stations on rural properties and enables continuous monitoring and control of equipment from a central base station. Operating in the unlicensed 900 MHz band and the standard 477 MHz CB radio UHF frequency, this system offers vastly superior performance to other telemetry systems available within Australia. The radio modems use the latest in spread spectrum frequency hopping technology and offer up to 64 km range without the need for repeater stations.

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The M2M-Tracker is based on our M2M-Manager product. This is a complete system with GPS, GSM (or CDMA) phone and interface electronics. Comes with internal rechargeable NiMH batteries for independent operation when not connected to a vehicle. Simply send an SMS from your mobile phone with a predefined password and the unit will respond with GPS co-ordinates, speed and direction. Has facility for alarm inputs and an output for control of external relays. The phone connected to the GPS can also be used as a display unit for the GPS unit when traveling on foot or by bike.

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