Moore-SPA2HL Associated IS Programmable Limit Alarm Trip Model: SPA2HLPRG/4PRG/VAC

Overview

The Moore SPA2HL is an associated isolated programmable limit alarm trip module, part of the Moore Industries product range for process signal conditioning and protection. It provides configurable alarm set points and signal isolation for process transmitters and control signals, protecting downstream equipment and providing visual and relay alarm outputs.

The module is supplied in the programmable version with model reference SPA2HLPRG/4PRG/VAC, allowing set points and alarm behaviour to be configured to the application requirements without hardware changes.

Engineering & Design

Limit alarm trips are used to monitor process signals and provide a discrete contact output when the signal crosses a set threshold, for alarm, interlock, or control functions. The isolation provided by the SPA2HL breaks ground loops between instrumentation and control systems, improving signal integrity in industrial installations.

The programmable configuration of the SPA2HL supports the ‘associated’ instrument concept used in intrinsically safe installations, allowing the device to be installed in the safe area while serving field instruments installed in hazardous areas.

Key Features

• Programmable limit alarm trip function
• Associated isolated instrument design
• Configurable alarm set points
• Signal isolation between field and control circuits
• Model reference SPA2HLPRG/4PRG/VAC
• Suitable for process transmitter monitoring
• Alarm output for interlock and annunciation

Applications

• Process alarm monitoring and annunciation
• Transmitter signal conditioning
• Ground loop isolation
• Intrinsically safe associated instrument installations
• Interlock and trip functions
• Signal conversion and protection

Specifications

Signal conditioning protects both process and equipment, and the Moore SPA2HL programmable limit alarm trip is a dependable choice, which is why Seven Star LLC supplies the Moore SPA2HL limit alarm trip for process control projects.

The Moore SPA2HL associated programmable limit alarm trip receives the 4-20 mA signal from the hazardous area transmitter and trips the relay when the process value passes the programmed set point. The unit is programmed with the front keys for the set point, the hysteresis and the trip direction, and the relay contacts are wired into the shutdown matrix. The unit is mounted on the DIN rail in the safe area and is powered from the 24 V DC loop.

The SPA2HL unit is certified as the associated apparatus and is mounted in the safe area of the cabinet with the intrinsic safety barrier wiring to the field transmitter. The trip relay is used for the high and the low alarms of the process and the fail-safe state is selectable by the wiring of the output contact. The unit performs the continuous self-check of the input loop and the front LED indicates the healthy condition of the channel.

The SPA2HL trip is used for the overpressure and the underpressure protection of the process vessels, and the two units can be combined for the high/low shutdown with the common alarm bus. The programming of the set point and the hysteresis is carried out without the handheld communicator, and the loop test verifies the trip at the simulated value.

The Moore SPA2HL limit alarm trip is wired with the intrinsic safety barrier of the safe area.

Why Seven Star LLC

Seven Star LLC supplies the Moore SPA2HL programmable limit alarm trip for process control projects across the Gulf, with verified specifications and technical support. Our team assists with configuration selection, installation planning, and spare programmes for signal conditioning hardware.

We serve oil and gas, petrochemical, and process industries with reliable B2B supply of instrumentation and control products throughout the GCC.

Configuration & Application

The programmable set points of the SPA2HL allow the alarm thresholds to be adjusted to the process without hardware changes, reducing the spare inventory needed across different services. The isolation function eliminates ground loops between field instruments and control systems, a common source of measurement noise.

As an associated instrument, the SPA2HL supports intrinsically safe installations by providing the safe-area interface for hazardous area transmitters, extending the life of existing field wiring and instrumentation.

Call To Action

For the Moore SPA2HL limit alarm trip, SPA2HL programmable or any related control and instrumentation requirement, contact the Seven Star LLC team. Submit a formal inquiry through our RFQ page with your configuration and application details, and our specialists will respond with a detailed commercial proposal and the official Moore documentation.