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Bridge Amps
FE221, FE228, FE224
Configurations
Bridge Amp
FE221
$885.00 USD
A single-channel, non-isolated bridge amplifier designed to allow the PowerLab to connect to most DC bridge transducers.
checkmarkShips from USA
Estimated delivery time: 2-5 business days.
Octal Bridge Amp
FE228
$5,225.00 USD
An eight-channel, non-isolated bridge amplifier designed to allow the PowerLab to connect to most DC bridge transducers.
hourglassShips from Overseas
Estimated delivery time: 2 weeks.
Quad Bridge Amp
FE224
$2,995.00 USD
A four-channel, non-isolated bridge amplifier designed to allow the PowerLab to connect to most DC bridge transducers.
hourglassShips from Overseas
Estimated delivery time: 2 weeks.
Configurations
Bridge Amp
FE221
A single-channel, non-isolated bridge amplifier designed to allow the PowerLab to connect to most DC bridge transducers.
Octal Bridge Amp
FE228
An eight-channel, non-isolated bridge amplifier designed to allow the PowerLab to connect to most DC bridge transducers.
Quad Bridge Amp
FE224
A four-channel, non-isolated bridge amplifier designed to allow the PowerLab to connect to most DC bridge transducers.
Bridge Amps
Pressure, Force & Light Amplifiers
$885.00 USD-$5,225.00 USD
ADInstruments Bridge Amps are single-channel or multi-channel, non-isolated bridge amplifiers designed to allow the PowerLab to connect to most DC bridge transducers.
Overview
ADInstruments Bridge Amps are single-channel or multi-channel, non-isolated bridge amplifiers designed to allow the PowerLab to connect to most DC bridge transducers, including commonly available force transducers, temperature probes, light meters, displacement transducers, pressure transducers, and similar devices. They are capable of supporting various powered transducers, and certain low impedance unpowered transducers. To connect transducers with Grass connectors, purchase a Grass Adapter Cable.
Configurations
Bridge Amp copy permalink
https://www.adinstruments.com/products/bridge-amps#product-FE221
FE221
A single-channel, non-isolated bridge amplifier designed to allow the PowerLab to connect to most DC bridge transducers.
Octal Bridge Amp copy permalink
https://www.adinstruments.com/products/bridge-amps#product-FE228
FE228
An eight-channel, non-isolated bridge amplifier designed to allow the PowerLab to connect to most DC bridge transducers.
Quad Bridge Amp copy permalink
https://www.adinstruments.com/products/bridge-amps#product-FE224
FE224
A four-channel, non-isolated bridge amplifier designed to allow the PowerLab to connect to most DC bridge transducers.
Bridge Amp
FE221
Octal Bridge Amp
FE228
Quad Bridge Amp
FE224
Features
- Low-drift instrumentation amplifier
- Software-controlled zeroing
- Wide amplification range (±200 µV to ±5 V in 14 steps) for use with a wide range of transducers
- A high impedance input (2 x 1 MΩ single-ended, 2 MΩ differential) ensures that the Bridge Amp will not load the transducer
- Overload light to indicate whether the attached transducer is operating correctly or incorrectly
Support
Support Articles
Our Support Articles contain answers to common questions, how-tos, solutions, and documentation.
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See Training & WorkshopsDetails and Tech Specs
Product Codes
Technical
Single, Quad and Octal Bridge Amps (FE221, FE224 & FE228)
Input
- Number of inputs: 1 (single), 4 (Quad) or 8 (Octal); 8-pin DIN
- Input configuration: Differential
- Amplification range: ±200 μV to ±5 V full scale in 14 steps (combined PowerLab and Bridge Amp)
- ±5 V
- ±2 V
- ±1 V
- ±500 mV
- ±200 mV
- ±100 mV
- ±50 mV
- ±20 mV
- ±10 mV
- ±5 mV
- ±2 mV
- ±1 mV
- ±500 μV
- ±200 μV
- Amplification accuracy: ±0.5% (combined PowerLab & Bridge Amp)
- Maximum input voltage: ±10 V
- Input impedance: 2 x 1 MΩ (Single-ended); 2 MΩ (Differential)
- Low-pass filtering: 1 Hz to 2 kHz in eight steps (software selectable)
- Frequency response (-3 dB): 2 kHz maximum at all gains with the 2 kHz filter selected.
- CMRR (differential): 100 dB at 50 Hz (typical).
- Input noise: <1μVrms referred to input at highest gain
Excitation and Zeroing
- Excitation voltage range: 0-20 volts DC (±10 V referred to ground), adjusted by external resistor
- Transducer drive current: ±45 mA maximum
- Zeroing circuitry: Software-controlled, either manual or automatic Internal offsetting range: ±10 V (1 V - 5 V range) ±1 V (100 mV - 500 mV range) ±100 mV (200 μV - 50mV)
- Internal offset resolution: 16 bit (internal DAC) ± 32 000 steps about 0 V.
- 1, 2, 5 V -310 μV/step
- 100 mV, 200 mV, 500 mV - 31 μV/step
- 200 μV to 50 mV - 3 μV/step
Control Port
- I2C port: Power and control bus for front-end units.
- Supports a number of front-ends dependent on the PowerLab.
- Interface communications rate of ~50 Kbits/s.
Physical Configuration
- Dimensions (h × w × d) and Weight:
- Single (FE221): 55 mm × 120 mm × 260 mm (2.2" × 4.7" × 10.2"); 1.2 kg
- Quad (FE224): 55 mm × 240 mm × 260 mm (2.2" × 9.4" × 10.2"); 2.1 kg
- Octal (FE228): 70 mm × 240 mm × 260 mm (2.8" × 9.4" × 10.2"); 2.6 kg
- Power requirements: 0.8 W (FE221); 2.5 W (FE224); 5.0 W (FE228) (without transducer attached)
- Operating temperature range: 5 to 35 °C, 0 to 90% relative humidity (non-condensing)
Safety
- EMC: Approved to EN61326-1:2006 Standard
ADInstruments reserves the right to alter these specifications at any time.
Manuals
Requirements
- PowerLab /25, /30 and /35 or later units
- Either LabChart 6 or later (Windows and Macintosh) or Chart 5.4.2 or later (Windows and Macintosh)
- Scope for Windows (3.7.8 or later) or Scope for Mac (4.0.3 or later)
