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- Non-contact measurement method minimizes service requirements
- Quick and simple commissioning via menu-guided onsite operation
- Envelope curves on the on-site display
Specs at a glance
Function Continuous level measurement Maximum measuring range in fluids 8 m Maximum measuring range in bulk materials 3.5 m Blocking distance ≥0.25 m Typical measuring error ±3 mm (±0.12 in) or 0.2 % of measuring distance Prosonic T FMU30
Product / Version Price / pcs. in EUR Order code Approval Display; Operation Process Connection 1 to 3 4 to 10 11+ Non-hazardous area W/o; via spare part display FMU30 Thread ISO228 G1-1/2, PP 515,- 463,- 422,- FMU30-AAGEAAGGF Thread ISO228 G2, PP 576,- 519,- 473,- FMU30-AAGEABGHF Envelope curve display on site; push button Thread ISO228 G1-1/2, PP 622,- 560,- 510,- FMU30-AAHEAAGGF Thread ISO228 G2, PP 684,- 615,- 561,- FMU30-AAHEABGHF ATEX II 1/2G Ex ia IIC T5 W/o; via spare part display FMU30 Thread ISO228 G1-1/2, PP 657,- 591,- 539,- FMU30-BBGEAAGGF Thread ISO228 G2, PP 718,- 647,- 589,- FMU30-BBGEABGHF Envelope curve display on site; push button Thread ISO228 G1-1/2, PP 765,- 688,- 627,- FMU30-BBHEAAGGF Thread ISO228 G2, PP 826,- 743,- 677,- FMU30-BBHEABGHF Prices valid until 30.09.2020 in EUR per unit (not including shipping and applicable sales tax). See
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Application
Prosonic T FMU30 is a sensor for continuous, non-contact level measurement in simple applications. It can be used in fluids, pastes, sullages and coarse bulk materials. FMU30 is not suited for liquids with foam at the surface.
Function
The sensor of the instrument transmits ultrasonic pulses in the direction of the product surface. There, they are reflected back and received by the sensor. The instrument measures the time between pulse transmission and reception. The instrument uses the time (and the velocity of sound) to calculate the distance between the sensor membrane and the product surface.
Application example
Level measurement in a pump shaft
a) Venting hole
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Technical data
InputMax. range fluids Sensor 1½": 5 m (16 ft)
Sensor 2": 8 m (26 ft)
Max. range bulk materials Sensor 1½": 2 m (6.6 ft)
Sensor 2": 3,5 m (11 ft)
Operating frequency Sensor 1½": approx. 70 kHz
Sensor 2": approx. 50 kHz
Pulse frequency Max. 0.5 Hz Emitting angle α 11° Blocking distance Sensor 1½": 0.25 m (0.8 ft)
Sensor 2": 0.35 m (1.1 ft)
OutputOutput signal 4 to 20 mA Signal on alarm Selectable, according to NAMUR NE43 Output damping Freely selectable, 0 to 255 s Linearization Up to 32 value pairs Power supplySupply voltage 14 to 35 V DC (protective circuitry against reverse polarity is built into the device) Power consumption 51 to 800 mW Cable gland M20 × 1.5 (recommended cable diameter 6 to 10 mm (0.24 to 0.39 in)) Performance characteristicsReference operating conditions Temperature = +20 °C (+68 °F);
Pressure = 1013 mbar abs. (15 psi abs.);
Humidity = 50 %;
Ideal reflective surface (e.g. calm, smooth fluid surface)
Typical measuring error ±3 mm (±0.12 in) or 0.2 % of measuring distance Measured value resolution 1 mm (0.04 in) Operating conditionsAmbient temperature –20 to +60 °C (–4 to +140 °F) Storage temperature –40 to +80 °C (–40 to +176 °F) Process temperature –20 to +60 °C (–4 to +140 °F) Process pressure 0.7 to 3 bar abs. (10.15 to 43.5 psi) Ingress protection IP 66/68 Climate class DIN EN 60068-2-38 (Test Z/AD) DIN/IEC 68 T2-30Db Vibration resistance DIN EN 60068-2-64 / IEC 68-2-64: 20 to 2000 Hz, 1 (m/s²)²/Hz; 3 × 100 min Electromagnetic compatibility (EMC) according to all relevant requirements of the EN 61326 series MaterialsSensor PP Sealing EPDM Housing PBT-FR (cover PBT/PA) Housing designType of housing F16 plastic housing Cover Plastic cover
– For version without on-site display (low, grey)
– For version with on-site display (high, transparent)
OperabilityDisplay and operating elements menu-guided on-site operation with four-line plain text display with envelope curves; Commubox FXA291 (available as accessory) Dimensions (in mm)
a) Sensor 1½"
b) Sensor 2"
Installation according to instruction manual.
Electrical connection
a) Terminals
b) Optional: display
c) Internal earth terminal
d) External earth terminal
e) Display
f) Power
g) Plant ground
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