The 4WHB10K provides the completion resistor required for 4-wire half-bridge measurements. This module should be used with sensors that have a 10 kΩ resistance.Read More
|Completion Resistor||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)|
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 datalogger terminal strips have this sequence on all channels, so please check your datalogger'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 datalogger input channels with a Terminal Input Module attached; older CR10TCRs are not deep enough.
The 4WHB10K is measured either with CRBasic's BrHalf4W Instruction or Edlog's Instruction 9 (Full-Bridge with Excitation Compensation).
|CR200(X) Series||CR800/CR850||CR1000||CR3000||CR9000X||CR6||CR300 Series|
*Compatible CR9000(X) modules are the CR9050 and the CR9052; the CR9051 is partially compatible.
**As shipped, the prongs on the 4WHB10K are too short to fit the CR7. If you're determined to use the 4WHB10K with a CR7, you can solder wire to the prongs, thereby extending their length.
Number of FAQs related to 4WHB10K: 2
For more information, refer to the “PRT in 4 Wire Half Bridge” section in the 4WPB100, 4WPB1K PRT Bridge Terminal Input Modules Instruction Manual. Figure 2-1 in the manual provides a circuit schematic.
The 4WPB100, 4WPB1K, and 4WHB10K terminal input modules can be used instead of the 3WHB10K module. However, to maintain the enhanced accuracy of the four-wire half-bridge instruction, it is pertinent when adding the fourth wire to maintain the same resistance as the other three wires (same wire size and manufacturer). Note that simply adding a short jumper wire on the 4WPB100, 4WPB1K, or 4WHB10K modules to complete the fourth wire will not maintain the accuracy.