Products

The Somat eDAQlite Bridge Layer (ELBRG) offers four simultaneously sampled low-level differential analog inputs through independent connectors. An extremely versatile layer; the Bridge Board works with both amplified and unamplified transducers, including strain gauges, accelerometers, pressure transducers, load cells, and other general analog signals.

The ELBRG provides excellent strain gauge conditioning with support for 1/4-, 1/2-, and full-bridges. Automatic balancing and gain settings, as well as software selectable sample rates, excitation and digital filtering, simplify the set-up of a strain channel. There are several calibration options, including defined value, external, multipoint and shunt calibrations with embedded software tools. Four shunt calibration resistors per channel are also included, with software selectable shunt direction.

Product Specifications

Physical

Size: 6.875in W x 5.625in L x 0.694in H (175mm W x 143mm L x 17.6mm H)
Weight: 0.91lbs (0.42kg)
Temperature: -20° to 65° C
Connectors: (4) Somat M8 Female Bulkhead Connectors

Inputs

Range:

• Minimum full-scale: ±625μV
• Maximum full-scale: ±10V

Resolution: 16-bit ADC, across specified full-scale range
Sample Rates: Independently set

• 100kHZ Master Clock= 0.1Hz to 100kHz
• 98.3kHz Master Clock= 0.1Hz to 98,304Hz

Filtering:

• Analog: 25kHz, 8-pole Butterworth low-pass filter
• Digital: Software selectable; 8-pole Butterworth and Linear Phase

Strain Gauge Conditioning:

• Supports: 1/4-, 1/2- and full-bridge gauges
• Excitation: 5V (Bipolar ±2.5) or 10V (Bipolar ±5)

    Bridge Resistance:

• 1/2 and Full Bridge: 100 to 10,000Ω.
• 1/4 Bridge: Completion resistor; specified 350Ω (ELBRG-350) or 120Ω (ELBRG-120)

    Four shunt calibration resistors per channel:

• 50k Ω
• 100k Ω
• 200k Ω
• 500k Ω

    Selectable shunt direction: upscale (-Sig to -Ex), downscale (-Sig to +Ex)

Includes

(4) Somat SAC-TRAN-MP-2 Transducer Cables (2 m)

Product Options

Part Number Code

The following part number scheme is used to identify the layer configuration.

ELBRG – XXX

eDAQ-lite Layer ELBRG

1/4 Bridge Completion Resistor

• 120 Ω
• 350 Ω