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.

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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

Cables and Accessories

M8 Hex Nut Wrenches

The Somat M8 Hex Nut Wrenches (HDW-0034-00) work with the Somat M8 transducer and extension cables for both the eDAQ and eDAQlite.

Extension Cable (0.4 m)

The Somat SAC-EXT-MF-0.4 Extension Cable (SAC-EXT-MF-0.4) is a high-quality 0.4 meter pre-molded cord et with Male/Female SoMat M8 connectors.

Extension Cable (2 m)

The Somat Extension Cable (SAC-EXT-MF-2) is a high-quality 2 meter pre-molded cord set with Male/Female Somat M8 connectors.

Extension Cable (5 m)

The Somat SAC-EXT-MF-5 Extension Cable (SAC-EXT-MF-5) is a high-quality 5 meter pre-molded cord set with Male/Female Somat M8 connectors.

Extension Cable (10 m)

The Somat SAC-EXT-MF-10 Extension Cable (SAC-EXT-MF-10) is a high-quality 10 meter pre-molded cord set with Male/Female Somat M8 connectors.

Extension Cable (15 m)

The Somat SAC-EXT-MF-15 Extension Cable (SAC-EXT-MF-15) is a high-quality 15 meter premolded cord set with Male/Female Somat M8 connectors.

Transducer Cable (2 m)

The Somat Transducer Cable (SAC-TRAN MP-2) is a high-quality 2 meter pre-molded cord set with tinned pigtail wires for transducer wiring.

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Transducer Cable (10 m)

The Somat Transducer Cable (SAC-TRAN-MP-10) is a high-quality 10 meter pre-molded cord set with tinned pigtail wires for transducer wiring.

E-AC/15 – 15-Volt Power Supply

The E-AC/15 is a high-quality 15 volt DC power supply that provides power to an eDAQ or eDAQlite from a standard 120/240 volt supply.

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