Westinghouse 3A99722G04 Temp Sensor Board

The Westinghouse 3A99722G04, also cataloged as the 3A99722G04 Temp Sensor Board, operates as a dedicated hardware component for temperature acquisition and thermal feedback processing within WDPF control platforms.

Hardware Specifications

Cold Junction Compensation & Signal Isolation

Designed for critical temperature monitoring, the module incorporates precision onboard cold junction compensation (CJC) algorithms to correct millivolt conversion drift across varying ambient operating conditions. High-density channel-to-channel galvanic isolation isolates low-level sensor signals from industrial field line noise and ground potential differentials. Continuous analog-to-digital scaling converts raw thermal inputs into calibrated digitized process values for backplane bus transmission.

Frequently Asked Questions

Q: Can the 3A99722G04 board be replaced while the WDPF chassis is powered?

A: No, the WDPF card chassis slot must be de-energized prior to removing or inserting the board to avoid backplane voltage surges and signal corruption.

Q: How is cold junction reference accuracy maintained across field terminal connections?

A: Integrated precision thermal sensors situated directly near the input terminal interface continuously track terminal temperature variations to provide real-time CJC offset calculations.

Field Installation Guidelines

1. Power off the target WDPF card cage rack and verify zero voltage potential across the backplane connectors.
2. Put on an anti-static wrist strap connected to cabinet earth ground before handling the circuit board assembly.
3. Slide the board into the designated rack slot card guides and push firmly until the rear edge connectors seat completely.
4. Tighten top and bottom faceplate retaining screws to lock the board in place against cabinet vibration.
5. Terminate all temperature sensor field wiring using twisted, shielded cable pairs, bonding the shield to the enclosure ground bus at one end only.