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Inline Amplifiers

U3W Series

Strain gage. 4 mA to 20 mA analog output. Programmable gain settings. Wide adjustment range on the zero

Configure Product

The Model U3W amplifier supplies a highly regulated bridge excitation voltage for the transducer and converts the millivolt signal of the transducer to a 4 mA to 20 mA three-wire current output signal. The Universal In-line features two selectable excitation voltages, programmable gain settings, a wide adjustment range on the zero, and a buffered solid-state shunt cal relay for quick calibration.

Features
  • Strain gage sensor amplifier
  • 18 Vdc to 32 Vdc supply voltage
  • NEMA 4 housing
  • Selectable excitation voltages: 3 V or 5 V @ 70 mA
  • 4 mA to 20 mA analog output
  • Increases signal-to-noise ratio in noisy environments
  • Effects of voltage drops in excitation sources are eliminated
  • Signals may be sent to the data systems from low impedence sources

Others

  • Current Draw
    • 70 mA
  • Order Code
    • BE125EL,51J
  • Span Adjustment Range
    • 0.5 mV/V to 6.6 mV/V, ±25 % fine adjustment
  • Zero Adjustment Range - Fine
    • ±25 %
  • dc Power Supply Rejection Ratio
    • >110 dB
  • Frequency Response (-3 dB)
    • dc: 7000 Hz with 350 ohm bridge; dc: 5000 Hz with 5000 ohm bridge
  • Product Dimensions
    • Plastic: 63,5 mm H x 96,25 mm L x 53,34 mm D [2.5 in H x 3.75 in L x 2.1 in D]; Aluminum: 76,2 mm H x 127 mm W x 63,5 mm D [3.0 in H x 5.0 in W x 2.5 in D]
  • Sealing
    • IP66 or NEMA 4
  • Transducer Type
    • Bridge-based sensor
  • Shunt Calibration
    • Solid statate relay on board
  • Signal-to-Noise Ratio
    • 65 dB
  • UNSPSC Commodity
    • Amplifiers
  • Mounting
    • #6 or #8 screws
  • Number of Channels
    • 1
  • Linearity
    • 0.02 % of full scale
  • Output
    • 4 mA to 20 mA (three wire)
  • Transducer Excitation
    • 3 Vdc or 5 Vdc @ 70 mA
  • Supply Voltage
    • 18 Vdc to 32 Vdc
  • Series Name
    • U3W
  • Zero Adjustment Range - Coarse
    • ±70 %
  • Case Material
    • Plastic or Painted Aluminum
  • Rise Time (0 % to 90 %)
    • 54 ms with 350 ohm bridge; 78 ms with 5000 ohm bridge
  • UNSPSC Code
    • 32101514
  • Temperature (Operating)
    • -15 °C to 71 °C [5 °F to 160 °F]

Others

  • Current Draw
    • 70 mA
  • Order Code
    • BE125EL,51J
  • Span Adjustment Range
    • 0.5 mV/V to 6.6 mV/V, ±25 % fine adjustment
  • Zero Adjustment Range - Fine
    • ±25 %
  • dc Power Supply Rejection Ratio
    • >110 dB
  • Frequency Response (-3 dB)
    • dc: 7000 Hz with 350 ohm bridge; dc: 5000 Hz with 5000 ohm bridge
  • Product Dimensions
    • Plastic: 63,5 mm H x 96,25 mm L x 53,34 mm D [2.5 in H x 3.75 in L x 2.1 in D]; Aluminum: 76,2 mm H x 127 mm W x 63,5 mm D [3.0 in H x 5.0 in W x 2.5 in D]
  • Sealing
    • IP66 or NEMA 4
  • Transducer Type
    • Bridge-based sensor
  • Shunt Calibration
    • Solid statate relay on board
  • Signal-to-Noise Ratio
    • 65 dB
  • UNSPSC Commodity
    • Amplifiers
  • Mounting
    • #6 or #8 screws
  • Number of Channels
    • 1
  • Linearity
    • 0.02 % of full scale
  • Output
    • 4 mA to 20 mA (three wire)
  • Transducer Excitation
    • 3 Vdc or 5 Vdc @ 70 mA
  • Supply Voltage
    • 18 Vdc to 32 Vdc
  • Series Name
    • U3W
  • Zero Adjustment Range - Coarse
    • ±70 %
  • Case Material
    • Plastic or Painted Aluminum
  • Rise Time (0 % to 90 %)
    • 54 ms with 350 ohm bridge; 78 ms with 5000 ohm bridge
  • UNSPSC Code
    • 32101514
  • Temperature (Operating)
    • -15 °C to 71 °C [5 °F to 160 °F]
  • Current Draw : 70 mA
  • Order Code : BE125EL,51J
  • Span Adjustment Range : 0.5 mV/V to 6.6 mV/V, ±25 % fine adjustment
  • Zero Adjustment Range - Fine : ±25 %
  • dc Power Supply Rejection Ratio : >110 dB
  • Frequency Response (-3 dB) : dc: 7000 Hz with 350 ohm bridge; dc: 5000 Hz with 5000 ohm bridge
  • Product Dimensions : Plastic: 63,5 mm H x 96,25 mm L x 53,34 mm D [2.5 in H x 3.75 in L x 2.1 in D]; Aluminum: 76,2 mm H x 127 mm W x 63,5 mm D [3.0 in H x 5.0 in W x 2.5 in D]
  • Sealing : IP66 or NEMA 4
  • Transducer Type : Bridge-based sensor
  • Shunt Calibration : Solid statate relay on board
  • Signal-to-Noise Ratio : 65 dB
  • UNSPSC Commodity : Amplifiers
  • Mounting : #6 or #8 screws
  • Number of Channels : 1
  • Linearity : 0.02 % of full scale
  • Output : 4 mA to 20 mA (three wire)
  • Transducer Excitation : 3 Vdc or 5 Vdc @ 70 mA
  • Supply Voltage : 18 Vdc to 32 Vdc
  • Series Name : U3W
  • Zero Adjustment Range - Coarse : ±70 %
  • Case Material : Plastic or Painted Aluminum
  • Rise Time (0 % to 90 %) : 54 ms with 350 ohm bridge; 78 ms with 5000 ohm bridge
  • UNSPSC Code : 32101514
  • Temperature (Operating) : -15 °C to 71 °C [5 °F to 160 °F]
Data Sheet
Name
Description
File Size
Date
Size
Test & MeasurementInstrumentation Accessories Datasheet
649.85 KB
5/24/2021
PDF 649.85 KB
Test & MeasurementModel U3W Bridge Based Sensor In-Line Amplifier Datasheet
243.29 KB
5/24/2021
PDF 243.29 KB
Manuals and Guides
Name
Description
File Size
Date
Size
Model U3W Universal In-Line Transducer Amplifier Product Manual
181.26 KB
5/24/2021
PDF 181.26 KB
Name
Description
File Size
Date
Size
Test & MeasurementInstrumentation Accessories Datasheet
649.85 KB
5/24/2021
PDF 649.85 KB
Model U3W Universal In-Line Transducer Amplifier Product Manual
181.26 KB
5/24/2021
PDF 181.26 KB
Test & MeasurementModel U3W Bridge Based Sensor In-Line Amplifier Datasheet
243.29 KB
5/24/2021
PDF 243.29 KB