Westronics CB100188-01 Rev F Recorder Board Card

The CB100188-01 Rev F is a printed circuit board card designed for Westronics series chart recorders and data loggers, including the Smartscan, SuperScan, and Series 2000 models. This board serves as the main processor or I/O interface card, handling analog-to-digital conversion, data storage, and communication with the front panel and host system. Rev F indicates the latest revision with improved noise filtering and firmware updates. It is a direct replacement for earlier revisions (A through E) and ensures compatibility with existing hardware.

Functional Specifications

• Microcontroller: 16-bit, 40 MHz with floating-point capability

• Memory: 512 KB SRAM, 1 MB Flash (for firmware and configuration)

• Analog Inputs: Up to 12 channels (differential or single-ended), 16-bit resolution

• Input Ranges: Thermocouple, RTD, mV, V, mA (software selectable per channel)

• Communication: RS-232 (DB9) and RS-485 (terminal) with Modbus RTU protocol

• Digital I/O: 8 optoisolated inputs, 8 open-collector outputs (for alarms)

Features

The board includes cold junction compensation (CJC) for thermocouples, with automatic calibration. It supports scaling, averaging, and linearization of sensor inputs. The firmware includes data logging to internal memory (up to 10,000 samples) and can trigger alarm outputs on high/low limits. The board also provides a real-time clock with battery backup for time-stamped data. An LED array indicates power, communication, and channel status.

Physical and Environmental

Dimensions: 190 mm × 110 mm (Eurocard 3U). Weight: 0.25 kg. Power supply: 5 VDC (1.2 A) and ±12 VDC (0.3 A) from the recorder chassis. Operating temperature: 0–50°C; storage: -20–70°C; humidity: 10–90% non-condensing. The board has a 96-pin DIN 41612 connector for backplane interface and a front panel with LEDs and a 25-pin D-sub for external I/O.

Compatibility

This Rev F board is backward compatible with older Westronics recorders that originally used CB100188-01 Rev A-E. It also works with the optional communication modules for Ethernet or Profibus. When replacing, ensure that the firmware version on the board matches the recorder's main program; updates can be applied via the RS-232 port using Westronics' service software.

Applications

Used in industrial monitoring for temperature, pressure, flow, and level logging. The CB100188-01 is critical for maintaining operation of legacy Westronics recorders in power plants, chemical plants, and water treatment facilities. Spare boards are essential for minimizing downtime during repairs.