4WHB10K
4WHB10K
Orderable10-kohm, Four-Wire Half-Bridge Terminal Input Module
Overview
The 4WHB10K provides the completion resistor required for four-wire half-bridge measurements. This module should be used with sensors that have a 10 kΩ resistance.
Technical Description
4WHB10K Schematic
4WHB10K-to-Sensor Hookup
Benefits
- Makes accurate measurement of 10-kohm, 4-wire half bridges simple
- Easy to install or remove
- Connects directly into data logger input terminals
- Compatible with most Campbell Scientific data loggers
Specifications
- Used With
- 4-wire half bridge measurements with a 10 kΩ resistance
- Resistance
- 10 kΩ
(bulk metal foil)
- Tolerance
- ±0.01%
(@ 25°C)
- Maximum Temperature Coefficient
- ±0.8 ppm/°C
- Power Rating
- 0.25 W
(@ 70°C)
- Dimensions
- 1.5 x 1.5 x 2.7 cm
(0.6 x 0.6 x 1.0 in.) for body with prongs
- Weight
- 6 g
(0.2 oz)
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Compatibility
Data Logger Considerations
The 4WHB10K uses two sequential differential analog inputs; the first differential channel must have an adjacent analog ground channel to accept the "ground prong" of the 4WHB10K. Not all data logger terminal strips have this sequence on all channels, so please check your data logger's wiring panel to confirm channel assignments, especially if you plan to use multiple Terminal Input Modules.
Newer CR10X Wiring Panels and the CR10XTCR Thermocouple Cover are deep enough to cover the data logger input channels with a Terminal Input Module attached; older CR10TCRs are not deep enough.
Programming
The 4WHB10K is measured either with CRBasic's BrHalf4W Instruction or Edlog's Instruction 9 (Full-Bridge with Excitation Compensation).
