3WHB10K
3WHB10K
Orderable10-kohm, Three-Wire Half-Bridge Terminal Input Module
Overview
The 3WHB10K provides the completion resistor required for a three-wire half-bridge measurement. It is typically used with 100 Ω and 1000 Ω platinum resistive thermometers (PRTs).
Technical Description
3WHB10K Schematic
3WHB10K-to-Sensor Hookup
Benefits
- Makes accurate measurement of 3-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
- 100 Ω or 1 kΩ platinum resistive thermometer (PRT) or other 3-wire half bridge
- 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
Multiplexers
The AM16/32-series and AM25T multiplexers are compatible with the 3WHB10K.
Data Logger Considerations
The 3WHB10K uses two adjacent single-ended analog inputs; an adjacent analog ground channel accepts the "ground prong" of the 3WHB10K. 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 can accommodate both the 3WHB10K and the cover associated with the CR10XTCR (reference thermistor for thermocouple measurements). Specifically, the physical configuration of the thermocouple cover, the data logger input terminals, and the terminal input modules allow sufficient room for the cover to be used with a Terminal Input Module attached. In contrast, older CR10TCRs are not deep enough.
