B&M Technical Services, Inc.

  • Home
  • Expert Services
    • Services Overview
    • Pump Rebuilds
    • Calibration and Testing
    • Cross Connection and Backflow Preventers
    • Lift Station Upgrade
    • SCADA
  • Product Partners
    • Product Overview
    • MPE, Inc. >
      • MPE Controllers
      • MPE Phase Monitors
      • MPE Voltage Monitors
      • MPE Duplex/Triplex Alternators
      • MPE Time Delay Relays
      • MPE Level Measurement
      • MPE Intrinsically Safe Controls
      • MPE Special Controls
      • MPE Pump Monitor Relay
    • ShinMaywa >
      • ShinMaywa CNWX Pumps
      • ShinMaywa CNXH/CNX Pumps
      • ShinMaywa Dewatering Pumps
    • HCP Pumps
    • Barmesa Pumps
    • Eastech Flow Controls
    • Micronics
    • Magnum Power Products
    • Allen Bradley
  • Project Portfolio
    • New Lift Stations
    • Can Station Upgrades
    • SCADA & Telemetry Systems
    • Microstrainers
  • Contact
    • Contact Information
    • About Us
    • FAQ
    • Careers >
      • Employees Portal
      • Position Descriptions
      • Application

Office: 715.228.7604
Fax: 715.228-3418

364 Industrial Drive
PO Box 48
Coloma, WI 54930

MPE Level Measurement - Wirelessly!

8/8/2014

0 Comments

 
When we were down at MPE last month, another cool product John shared with us was the new Wireless Level Measurement Transmitter and Receiver platform. We're really excited for the applications where it's not feasible to run wire to the transducer, but level monitoring is still necessary.
Picture
Picture
For all the details, here's the MPE press release on it. Bolded parts are my highlights.
The Wireless Level Measurement Transmitter and Receiver perform liquid level measurement and sends the data by radio signal from the Transmitter to the Receiver.  The wetwell part of the product consists of two parts, connected by a cable; the Transmitter and the Pressure Sensor.  The Transmitter is suspended above the liquid, and the Pressure Sensor is submerged in the liquid near the bottom of the tank.

The Transmitter transmits updated level data and battery condition data once every second.  To conserve battery power, most of the circuitry is powered down and asleep between updates.  After being asleep, the Transmitter wakes up, powers up the Pressure Sensor, checks the level, checks the condition of the battery, transmits the new data to the Receiver, and then goes back to sleep. We estimate that the transmitter battery life to be fifteen years.

The Pressure Sensor converts the pressure exerted by the liquid into an analog voltage signal that represents the liquid level.  The Transmitter and sensor are a sealed unit, and measure Absolute Pressure.  Atmospheric Pressure is measured in the Receiver, and is used to subtract from the absolute value to provide the Gauge Pressure representing the wetwell level.

The pressure sensor contains a stainless steel diaphragm and silicone oil fill is provided to isolate and protect the pressure sensor from the liquid being measured. The weight of the Pressure Sensor acts to reduce its movement when placed in a moving liquid.  A Strength Cord in the cable provides ample support for its weight.  In applications where strong currents may be present, the 1/2” NPT fitting on top may be used to mount it in a fixed position.

The Pressure Sensor and the Transmitter come connected together tested and calibrated as a unit and are calibrated to read levels between 0.0 feet and 34.6 feet, providing a 16 bit number to the Receiver that represents the measured level. Calibration of the 4-20mA analog output, provided by the Transducer Receiver, is done using the Zero and Span potentiometers on the Receiver. Zero and Span potentiometers are provided for field calibration of the analog 4-20mA output.  The Span may be adjusted for 20mA @ 11.5 feet/H2O,  20mA @ 23.1 feet/H2O,  or  20mA @ 34.6 feet/H2O.

The Wireless Transducer Receiver reads the liquid level information in the radio signal from the nearby Wireless Transducer Transmitter and provides an analog 4-20mA output and SCADA register data that represents the liquid level being monitored. For applications where the Transmitter and Receiver Antenna have line of site, reliable communication can be maintained at distances up to 125 feet.

The Receiver provides three levels of Radio Link Quality indication.  High, which indicates strong error free communication.  Low, which indicates less than ideal communication.  Lost, which indicates no communication with the Transmitter. The Battery Low indication is provided to indicate the condition of the battery in the Transmitter.   Connecting the RS-232 serial port (or optional Ethernet Port) to a SCADA system allows the liquid level to be monitored remotely.
0 Comments

Your comment will be posted after it is approved.


Leave a Reply.

    Archives

    July 2017
    June 2017
    May 2017
    April 2017
    March 2017
    February 2017
    January 2017
    December 2016
    November 2016
    October 2016
    September 2016
    August 2016
    July 2016
    June 2016
    May 2016
    April 2016
    March 2016
    February 2016
    January 2016
    December 2015
    November 2015
    October 2015
    September 2015
    August 2015
    July 2015
    June 2015
    May 2015
    April 2015
    March 2015
    February 2015
    January 2015
    December 2014
    November 2014
    October 2014
    September 2014
    August 2014
    July 2014
    June 2014
    May 2014
    April 2014
    March 2014
    February 2014
    December 2013
    November 2013
    September 2013
    August 2013
    July 2013
    June 2013
    May 2013
    April 2013
    March 2013
    February 2013
    January 2013
    December 2012
    November 2012
    October 2012
    September 2012
    August 2012
    July 2012
    June 2012
    May 2012
    April 2012
    March 2012
    February 2012
    January 2012
    December 2011
    November 2011
    October 2011
    September 2011
    August 2011
    July 2011
    June 2011
    April 2011
    March 2011
    February 2011
    January 2011

Connect with us

Picture
Our Blog
Office: 715.228.7604
Fax: 715.228-3418

364 Industrial Drive, PO Box 48
Coloma, WI 54930

Search our site

Created and Maintained by Katie Gruber, B&M Technical Services Inc.