Description
The Emerson P188.R2 is a PCB associated with the Spectra 600 / FloBoss S600 flow-computer platform. Multiple industrial references identify it as a HART communication board, used to interface HART-enabled field devices with the flow computer.
The supplied eBay listing describes the unit as an Emerson connector board, but the more specific technical identification available for P188.R2 is a Spectra 600 HART board. Some secondary sources describe different channel configurations, so the exact board revision and application should be verified from the physical PCB label before specifying detailed I/O characteristics.
Key Features
- Emerson Spectra 600 system component
- P188.R2 PCB
- HART communication interface
- Designed for HART-enabled field instrumentation
- Used with Emerson/Daniel flow-computer systems
- Industrial PCB construction
- Suitable for maintenance and replacement applications
- Supports digital communication over conventional analog instrumentation loops
Product Datasheet
| Parameter | Specification |
|---|---|
| Brand | Emerson |
| Model | P188.R2 |
| Product Type | HART Communication / Interface PCB |
| System | Spectra 600 / FloBoss S600 |
| Primary Function | HART field-device communication |
| Protocol | HART |
| Signal Interface | 4–20 mA + HART |
| Channels | Configuration/revision dependent |
| Field Devices | HART-compatible transmitters and instruments |
| Communication | Digital HART over analog loops |
| Power Supply | System-dependent |
| Mounting | Spectra 600 system assembly |
| Application | Flow measurement and process instrumentation |
| Operating Temperature | Verify according to system configuration |
| Condition | New Surplus / Used — verify listing condition |
One secondary technical source describes P188.R2 as a 12-channel HART PCB, while another provides a different four-port description. Because these specifications conflict, I would avoid publishing a fixed channel count unless it is confirmed from the exact hardware revision or OEM documentation.
Functional Description
The P188.R2 provides an interface between HART field instruments and the associated Spectra 600 flow-computer system. HART allows digital device information to be exchanged over the same basic 4–20 mA instrumentation loop, allowing configuration, diagnostics, and measurement data to be accessed without replacing the analog signal architecture.
This makes the board useful in flow-computer installations where transmitters and other smart field devices need to communicate with the supervisory measurement system.
Typical Applications
- Natural gas flow measurement
- Custody-transfer metering
- Oil and gas installations
- Process instrumentation
- Flow-computer systems
- HART transmitter integration
- Metering and measurement skids
- Industrial maintenance and retrofit projects
Installation & Configuration
- Verify P188.R2 and the PCB revision.
- Confirm the host system is a compatible Spectra 600/FloBoss S600 configuration.
- Record the existing wiring before removing the board.
- Check the associated power board and rack connections.
- Install the P188.R2 in the correct system position.
- Reconnect the HART/field-device interfaces.
- Verify loop polarity and wiring.
- Check the HART device addresses and communication configuration.
- Power up the system and check diagnostics.
- Verify communication with each connected field device.
- Confirm measurement values at the flow computer.
Commissioning Checklist
- Confirm part number
- Verify PCB revision
- Inspect connectors
- Check rack position
- Verify power supply
- Check 4–20 mA loops
- Verify HART communication
- Check device addressing
- Confirm transmitter data
- Review system diagnostics
- Perform flow-computer functional testing
⚠️ Replacement Note
The term “connector board” in the eBay title is quite broad. Available references consistently associate P188.R2 with Emerson Spectra 600 HART functionality, so “HART Communication Board” is a more useful technical description for an industrial spare-parts listing.
There are also inconsistent online specifications for the number of HART channels and electrical characteristics. For this reason, avoid stating a specific channel count, input voltage, or certification unless it can be confirmed from the board label/manual for the exact revision.
