AMASS Data Technologies Inc.

AMASSER Environmental Product Line

Pliant Technology Specialists


Pliant : readily yielding to influence
 
 
 
Battery Charger
Radio Modems

Environmental Data Acquisition

The PDAS-III data loggers feature a built-in menu system which may be accessed directly from your PC, modem (/option "/MDM"), or GOES (option "/HDR") telecommunications .Firmware upgrades are easily accomplished via your PC.
The PDAS-III is your solution for a reliable, easy-to-use yet highly capable platform for amassing data. Sources of data for the PDAS-III include:
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Telemetry

Both land-line and satellite telemetry are available as options to the PDAS-III logger.
Our environmental PMDM modem features a power-down mode, -40°C to +125°C temperature range and 12VDC operation. Add suffix "/MDM" to logger for this option.
Our environmental PMDM/V modem provides both VOICE and data modes. Add suffix "/MDM/V" to logger for this option.

The SAT HDR GOES transmitter provides satellite telemetry to the PDAS-III logger. The transmitter is integrated into the logger packaging for NEMA 4,12-rated protection. The logger menu system allows for complete and easy operation of the transmitter.

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Groundwater Level Monitoring

Our PARSE (Pliant Automatic Reeler with Shaft Encoder) is an innovative approach to groundwater level monitoring. It is more robust, accurate and reliable than pressure transducer installations. It combines the calibration system of current groundwater installations with the high resolution and reliability of a shaft encoder. Current installations of equipment at groundwater and stilling wells require a device with a water-sensing plumb-bob mounted to a graduated tape in order to set the initial water level. Regular visits to the stations are also required in order to ensure that the equipment is accurate as verified with the “plumb-bob” device.
The PARSE features an automated version of the “plumb-bob” calibration device combined with the PSE-SDI shaft encoder. The PSE-SDI provides the fluid tracking as well as the control algorithms for the DC motor which drives the reel-mounted graduated tape. These algorithms allow various functions such as: “Measure”, “Hold Position”, “Reel up”, etc… The resolution of the system is 1/384th of a revolution, that is, with a 375 mm circumference pulley the resolution is less than a millimetre.
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Shaft Encoders

Our shaft encoders provide fluid level tracking with a resolution of 1/400th of a revolution, that is, with a 375mm-circumference pulley the resolution is less than a millimetre.  The sensed data may be provided serially via MODBus RTU, SDI-12, leased-line modem, or dial-up modem. The level may also be transmitted as a 4-20mA analog signal using a 16-bit DAC.
Here, then, is our line of shaft encoders:
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Shaft Encoder Hardware

Leupold & Stevens compatible shaft encoder hardware is now available from AMASS Data Technologies.  Pulleys and tapes designed for water-level sensing applications and compatible with Leupold & Stevens equipment.  The pulleys are 375mm in circumference and have three pins 125 mm apart which engage the punched tape.  The nylon-clad steel tapes are graduated in metric and are punched along their centreline at 125mm spacing.  Standard length of tape is 30 metres but other lengths may be ordered.

When ordered with our PSE-SDI shaft encoder, the pulley is mounted on an insulating hub thus providing the sensor with electrical isolation from the water and ensuring lightning protection.

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Protocol Conversion

AMASS Data provides solutions for those in need protocol converters. Whether it be RS232, SDI-12, Modbus RTU or some custom protocol you should give us a call. We currently have two standardized products: the PCOM-SDI and the PCOM-SDI/RTU.
The PCOM-SDI: (pictured above) RS232 to SDI-12 communications interface. In its standard configuration it is a SDI-12 master controller for auto data-buffer retrieval and setup of sensors by means of simple ASCII drivers on your RS232 host. The host is relieved of all SDI-12 timings restraints. More details please...

The PCOM-SDI/RTU: Modbus RTU to SDI-12 communications interface. This product allows your Modbus RTU device (eg. SCADA or PLC) to retrieve data from SDI-12 sensors. An RS232 port allows the user to configure the PCOM-SDI/RTU registers and SDI-12 command set.
What communications interface do you require for your sensors? MODBUS RTU, RS232, RS485, SDI-12. Tell us about your project. We can help.
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Submersible Temperature Probe

The AD34 Submersible Temperature Probe has an input range of -50C to +125C and full-scale error of +/- 1C. The output range is 0-2.5V.  It includes 2 metres of cable.
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Battery Charger

The PCHRGR battery charger is designed for optimum maintenance of lead acid/gel acid type batteries in environmental data acquisition installations. The PCHRGR regulates the current from the charging device to the battery in order to maintain it at the proper recommended float voltage of typical gel cell batteries. The charging current is regulated as a function of the load.
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Radio Modem

The PRF Environmental Radio Modems are reliable and highly adaptable units which provide a wireless connection between a wide variety of communications interfaces including RS232, RS485 and HCMOS (eg. SDI-12) devices.
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