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Ultrasonic Level & Flow Transmitters

Case study 1

MSP900 Series

The MSP900SH and the MSP900FH are based on ultrasonic technology.

Ultrasonic pulse signals are transmitted and reflected from the liquid surface.

The transmitter ‘listens’ for reflected signals (echoes) and measures

the time-delay between transmitting and receiving.

The distance to the liquid surface is automatically calculated using the computed time-delay.

The MSP900SH has an integrated sensor for automatically compensating

the Distance for temperature effects.

The MSP900FH has a factory fitted remote temperature sensor to continuously measure the air temperature around the transmitter. It then computes the speed of sound in air, automatically compensating Distance for temperature effects.

The level measurement (Bottom Reference minus Distance) is sent through the 4–20 mA and HART output.


MCU900 Controller

The MCU900 Series of wall and panel mounting control units provide comprehensive control functionality for any 4–20 mA or HART compatible transmitter. A back-lit display gives clear visual indication of the

measured value and status of all inputs and outputs.

- Tough weatherproof wall mount enclosure for internal and external mounting

- Accepts any 4–20 mA or HART compatible input.

(HART revisions 5, 6, and 7 are supported)

- Five voltage-free SPDT relays for alarm and control duties

- Supports two voltage-free contact closure inputs

- 4–20 mA 12-bit isolated current output proportional to calculated value

- Bright local display of measured value and input/output status

- Pre-programmed tank shapes, flow algorithms, and control

routines simplify configuration. A 20-point strapping table

facility is provided for non-standard applications

- Real-time clock for energy saving routines, pump efficiency

calculations, and time-stamped data logging


Ultrasonic Level Transmitters

The Mobrey MSP Series is a liquid level transmitter based on ultrasonic technology that is suitable for many liquid applications.

Ultrasonic pulse signals are transmitted and reflected from the liquid surface.The transmitter ‘listens’ for reflected signals

(echoes) and measures the time-delay between transmitting and receiving.The distance to the liquid surface is automatically

calculated using the computed time-delay. An integral temperature sensor continuously measures the air

temperature around the transmitter. It then computes the speed of sound in air, automatically compensating the Distance

for temperature effects. The MSP400RH and MSP900GH have a Remote Temperature Sensor option.

The distance measurement can be sent through the 4–20 mA or HART® output.

MSP400GH

0.3m - 8m range

Better than 1mm resolution

4-20ma

2” NPT or BSPT

PVDF


MSP400RH

0.3m - 11m range

Better than 1mm resolution

4-20ma with HART

2 integral relays

2” NPT or BSPT

PVDF


MSP422

0.3m - 11m range

Better than 1mm resolution

4-20ma with HART

2 integral relays

2” BSPT

PVDF

ATEX


MSP-RTP

External Temperature Sensor

-40 to 85 deg C

5m cable twisted pair

316 SS body

M8 thread


Mobrey MSP900 Ultrasonic Level & Flow TX-ds.pdf Mobrey MCU900 Controller-ds.pdf Mobrey Ultrasonic Level TX-ds.pdf Mobrey MSP-RTP Ext. Temp. Sensor-ds.pdf