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MPS90/MPS110 Mobrey Non-Contact Level & Flow meters
Features
  • Intrinsically safe version available
  • Contents measurement displayed may be in any units, easily programmed by the customer
  • 4-20mA output
  • All outputs-relays and current are programmable
  • Integral datalogger
  • Optional PTFE and stainless steel transducers

Description

The well established Mobrey MSP non-contact ultrasonic level and flow measurement meter has now been enhanced to provide more features including a new range of transducers, extending operating range up to 20 meters. The control unit has a built-in display and is programmed using a new infrared programmer. Updated software and 5 output relays are included as standard.

The new MSP range provides reliable analogue liquid level, contents or flow measurement and control with little to no maintenance required and features two ranges; the MSP90 specifically for the water industry and the MSP110 for the process industries.

MSP90-11 Wall Mounted Control Unit The MSP110 control unit provides the power to the transducer and contains the microprocessor which computes the outputs based on the transducer signal. The control unit is mounted onto the control room wall and is mains powered. (230/115V AC). All outputs are accessed by removing the lower terminal box lid to reveal the terminal strip. With an IP65 rating, the control unit may be mounted inside or outside. The only consideration is that the hand held remote programmer must be held within 2m of the control unit to ensure reliable communication

Operation

Contents measurement - Look up tables relating to volume of typical tank shapes are built in to the MSP110 memory, e.g. cylinders, horizontal and conical bottomed tanks. A 10-point graphical tabulation is also provided for irregular shaped tanks where the height to contents ratio is known.

Auto test routine - Once set up to site, an auto test routine can be initiated to simulate the liquid level rising from zero to the transducer face and back. This enables site checking to relay control, analogue output, indicated level and all external system control and ancillary circuits.

Synchronisation - Synchronisation is standard, allowing the transducer cables to be laid in common cable tray without cross-talk problems.

Programme lost echo action - In the event of a lost echo, the system may be programmed to drive the current output to either 0,4,20 or 22mA, or to hold the last valid reading.

Multifunction display - A built in display shows measured value and percentage of full reading as a bar graph. Alternatively, the bar graph can be changed to totaliser value, or changed to show another measured or calculated variable, such as temperature. The display includes programming indicators and relay status in the wall mount unit. The multicard unit uses LED's to indicate relay status.

  • Inventory control
  • Open channel flow measurement ·
  • Pump control
  • Differential measurement
  • Flumes and weirs
  • Differential level across screens

Application

Current output - The current output is selectable for either 0-20mA or 4-20mA rising or falling with level. The span can be selected over the whole or part of the range.

Control relays - 4 SPCO relays may be allocated to pump control or level alarm duty, all programmable independently. Relays any be programmed to auto-sequence pumps in duty/assist or duty/standby mode. Pump run times are logged for interrogation. Any relay can be programmed as rate of rise or rate of fall alarm. A relay can be allocated as a temperature alarm as tank temperature is continuously monitored by the transducer.

Alarm relay - The Fifth SPCO relay is a fail safe alarm which energises on mains failure, lost echo or other system fault. May also be reconfigured as a control relay.

Totaliser - An integral 8-digital totaliser will record pumped volume or flow through a channel. Any control relay may be programmed to give a pulsed output of the flow total. A second totaliser is used to give a sampler trigger pulse output on a control relay; this sampler can also act as a coarse totaliser.

Inputs - 4-20mA current input accepted from other sensors, which may be profiled if nonlinear. MSP110 provides 24v DC to power the sensor.

Remote Programmer - The MSP remote programmer (RPD) is a hand held infrared device used to program and calibrate the MSP110 control unit to provide all measurement and control functions. Simply aim the RPD at the control unit and use the keypad to access the parameters for reading and programming. The control unit has two levels of access and asks the user to enter via the keypad the level required-read only or program, thus preventing accidental reprogramming. The outputs of the control unit are frozen at their last values when program mode is selected.

Icons on the LCD of the control unit show programming status at all times.

 

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