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BCM-2-Series
Compact Strain Gauge Bridge Completion Module
Models In Stock
- Easy to Use
- Ultra Low TCR
- Ultra High Precision, Accuracy, and Stability
- Compact size
BCM-2-Series
From
€
133,74
Models In Stock
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
- Resistance Tolerance ± 0.02 %
- Series ID BCM-2-Series
- 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
Supported Applications
The Omega BCM-2 Series Bridge Completion Module is designed to complete strain gage bridge circuits where instrumentation does not include built-in bridge completion resistors or 'dummy' gages. The module employs metal-foil resistance elements bonded to a dense ceramic substrate, with thermal expansion matched to minimize temperature effects.
Documented applications for the series include:
- Quarter-bridge strain gage circuits
- Half-bridge strain gage circuits of any resistance value
- 120 Ω or 350 Ω three-wire quarter-bridge circuits (BCM-2-350R)
Operating Conditions & Performance
The BCM-2 Series operates within an ambient temperature range of -45 °C to +120 °C [-50 °F to +250 °F]. The specified process operating temperature is -18 °C to +95 °C [0 °F to +200 °F].
Resistance elements are processed to match the thermal expansion coefficient of the ceramic, resulting in a low resistance temperature coefficient. Over the range from -18 °C to +95 °C [0 °F to +200 °F], this is equivalent to ±0.27 με/°C [±0.15 με/°F] for half-bridge circuits and ±0.63 με/°C [±0.35 με/°F] for dummy gages.
Excitation voltage limits vary by configuration:
- D120 Configuration: Recommended 0.5 V to 15 V; Maximum 20 V
- D350 Configuration: Recommended 0.5 V to 25 V; Maximum 35 V
Configuration Options
The series is available in the BCM-2-120R and BCM-2-350R models, providing specific resistance values for bridge completion.
- BCM-2-350R: Provides a precision 350 Ω half bridge as well as 120 Ω and 350 Ω dummy gages. Recommended for use with half-bridge strain gage circuits of any resistance value, or with 120 Ω or 350 Ω three-wire quarter-bridge circuits.
- Dimensions: 25 mm x 25 mm x 5 mm [1 in x 1 in x 0.2 in] (including foam tape).
- Weight: 6 g
- Housing Material: Rugged aluminum overlay.
- Electrical Connection: Tinned, heavy copper terminals for leadwires up to 0.64 mm diameter [22-gage].
The module is covered with a special environmental protection system ensuring long-term stability. A rugged aluminum overlay, embossed with a wiring diagram for easy terminal identification, affords additional protection; in many applications no supplementary environmental protection is required.
Key Product Differences
Variants within the BCM-2 Series are distinguished by their resistance values and intended bridge configurations:
- BCM-2-120R: Listed as an enabled variant for strain gauge accessories.
- BCM-2-350R: Provides a precision 350 Ω half bridge along with 120 Ω and 350 Ω dummy gages, supporting both quarter-bridge (three-wire) and half-bridge circuits of any resistance value.
PDFs & Manuals
