Oldham MX 62 Gas Detection Controller

Overview

The Oldham MX 62 gas and flame detection controller is the modular central unit, a modular central unit that receives signals from gas and flame detectors and drives alarm relays and outputs. Per the official Oldham product data, the MX 62 is certified SIL 3 and SIL 2 according to EN 50402:2006 and IEC 61508:2011, and it supports up to 64 secured channels with direct or network wiring. Direct network and loop connections provide redundancy from measurement to alarm relays.

The controller is designed for gas and flame detection installations in industrial plants, meeting the requirements of ATEX 100 A and offering the security level required by SK2 and SIL 3 rated systems. The original listing identifies this unit as the Oldham MX 62 / WIN Pro series with reference numbers 3286004 and 4321007.

Engineering & Design

The MX 62 is a modular system built around four module types. The LED module provides 16 channels (8 channels standard) with four alarm thresholds, reset/acknowledge, power-on and fault indication. The LCD module provides graphic, alphanumeric or high-definition displays, and up to 30 displays can be networked with the MX 62, allowing measurement display anywhere at any time, with optional 5-day data storage and remote operation via RS 485.

The printer module prints alarms, relay operating status, fault and min/max averages over 8 hours, in ASCII format with 40 or 80 characters. The CPU module is the heart of the system, with backup power supply and two processors. The structure of the system is developed to provide redundancy, with reliable data passed quickly from the detectors to the relays.

Key Features

• SIL 3 and SIL 2 according to EN 50402:2006 and IEC 61508:2011
• Up to 64 secured channels for direct or network wiring
• Direct network and loop connection; redundancy from measurement to alarm relays
• Functions AND, OR, MIN, MAX and voting
• Modular: LED, LCD, printer and CPU modules
• Up to 30 networked LCD displays; remote via RS 485
• Configuration via ConfigPro.exe with password-protected interface
• Meets ATEX 100 A requirements

Applications

• Gas and flame detection control in industrial plants
• Refineries, petrochemical and chemical facilities
• Multi-channel monitoring of toxic and combustible gas detectors
• Safety-instrumented gas detection up to SIL 3

Specifications

Compatibility & Integration

The MX 62 works with the Oldham detector range, receiving 4-20 mA or bridge signals from gas and flame detectors installed in the plant. The modular structure allows the controller to be expanded channel by channel, and the password-protected ConfigPro.exe software is used to configure the system and program the outputs.

The listed reference numbers 3286004 and 4321007 from the original listing identify the supplied configuration; we recommend confirming the required modules and channel count with our team before ordering.

Ordering Information

To order the Oldham MX 62 gas detection controller from Seven Star LLC, quote the system type, the reference numbers (3286004 / 4321007 from the original listing) and the module configuration required. We confirm availability and delivery to your site in Oman or anywhere in the GCC.

Why Seven Star LLC

Seven Star LLC supplies gas detection systems and spares to industrial customers across Oman and the wider GCC region. Every Oldham MX 62 controller we supply is verified against your channel configuration before dispatch, and our team confirms the system matches your installation before you order.

FAQ

Planning an MX 62 System

Because the controller is modular, the first step is a detector and output schedule rather than a model number. List every gas and flame detector with its location, gas type and signal type, then group them into zones according to the cause-and-effect matrix. From that list the number of channels, the relay outputs for alarms and executive actions, and the display and printer modules can be defined.

• Count direct-wired and network-wired detectors separately, and allow spare channels for future additions.
• Define alarm thresholds and relay logic for each zone, including voting where required by the safety study.
• Confirm which signals are sent to the DCS, ESD or fire and gas system, and whether RS 485 remote operation is needed.
• Check that the target SIL for each function is supported by the chosen architecture.

Installation and Commissioning

Install the controller in a safe-area control room or equipment room with adequate ventilation and a reliable, backed-up supply. Use shielded cabling for detector loops and keep it separate from power wiring. During commissioning, each detector should be tested with calibration gas or a suitable flame test source, and every alarm threshold and relay action verified against the cause-and-effect matrix before handover.

Maintenance and Troubleshooting

Routine work on an OLDHAM MX 62 installation includes periodic gas testing of detectors, review of event and fault logs, and checks of the backup power supply. Recurring line faults usually trace back to damaged cable, water in junction boxes or poor terminations, while drifting readings are generally a detector issue rather than a controller fault.

Gas Detection in Oman and the GCC

Oil and gas processing plants, tank farms, chemical facilities and water treatment works with chlorine or hydrogen sulphide risks across the region rely on centralised gas detection controllers. Seven Star LLC supplies MX 62 controllers and modules and can help identify existing configurations by reference number when an installed system is extended or repaired.

Related Products

• C-TEC Fire Panel CFP708-4 Conventional 8 Zone
• Schneider Electric Zelio Logic SR2B121BD Smart Relay
• Schneider Electric Modicon M241 Logic Controller
• Schneider Electric PacDrive Motion Controller
• Schneider Electric Modicon M221 Compact PLC
• Honeywell 05704-A-0144 System 57 Engineering Card