BCM-2-Series

Compact Strain Gauge Bridge Completion Module

3.7

(3)

Models In Stock

Easy to Use
Ultra Low TCR
Ultra High Precision, Accuracy, and Stability
Compact size

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BCM-2-Series

From ^$ 148.74

Models In Stock

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2 Variations available

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Data Sheet

Product Overview

Bridge Resistance Note Matched (R1 & R2) Tolerance: 0.01%
Capacitance 1 pF
ESD Susceptibility >25 kV
Housing Height 0.7 in
Housing Length 1.2 in
Housing Width 0.3 in
Inductance 0.1 µH
Operating Temperature, Max 125 °C
Operating Temperature, Min -45 °C
Power Coefficient Of Resistance ± 5 ppm/W
Power Consumption 0.6 W
Datasheet (PDF) "1/5/7/9/15797329b8fd22fce30d7a37809b6e12e1cfa3fa_DS_BCM_2_350R.pdf"
Resistance Tolerance ± 0.02 %
Solder Pad Size 0.08 in x 0.08 in
Stability <50 ppm 2000hr@100mW, <150 ppm after 10,000hrs
Temperature Coefficient of Resistance 5 ppm/°C
Voltage Coefficient Of Resistance <0.1 ppm/V

An external bridge completion module must be used when instrumentation is not designed to measure a strain gauge directly. The BCM-2 Series employs metal-foil resistance elements bonded to a ceramic substrate. The packaging protects the resister circuitry and ensures long-term stability; in most cases, no additional protection is required, facilitating field use. The BCM-2 resistance elements are matched with each other and match the ceramic's thermal expansion coefficient, resulting in a low temperature coefficient of resistance (TCR).

Each module is marked with a circuit/wiring diagram for easy terminal identification and foam tape for easy attachment to the test-part surface or near the instrumentation site. Heavy, pre-tinned copper terminals facilitate the attachment of up to 22 AWG (0.64mm diameter) lead wires.

Completing a bridge circuit adjacent to the strain gage site creates a stable simple voltage differantial systme between the strain gage circuit and the instrumentation. Co-locating the strain gauges and BCM-2 also reduces the potetional for noise pickup in the lead wire system especially in situations where switch contacts, slip rings, or other mechanical connections are employed between the strain gages and instrumentation.

Cross to Vishay/Micro-Measurements MR1-350-130 & MRF-350-130