Honeywell OmniPoint Multi-Sensor Fixed Gas Detector

Overview

The Honeywell OmniPoint is a gas transmitter designed to operate in hazardous locations and to support multiple sensors for the detection of toxic, oxygen and flammable gas hazards. Instead of installing a separate transmitter for every gas, one OmniPoint unit can serve up to three sensors simultaneously, each with its own fully configurable 4-20 mA channel. Honeywell combines this with HART 7 communication, optional Modbus RTU and Bluetooth 5.0 modules, a 3 inch full-colour TFT display and a wide operating temperature range of –55 to 75 °C, making it a modern platform for process plants and oil and gas facilities.

Seven Star LLC supplies the Honeywell OmniPoint to oil and gas operators, refineries, petrochemical plants and EPC contractors in the Sultanate of Oman and the GCC. Multi-gas points are common in Oman: H2S plus LEL around sour gas wells and gathering stations, oxygen plus toxic gas in analyser houses, and ammonia or chlorine in utilities. With engineering support in Muscat, our team helps choose the sensor cartridges, enclosure material and communication modules for each detection point and checks the current certification status for the project.

Measurement Principle

The Honeywell OmniPoint works with two families of sensor modules. XPIS sensor modules use electrochemical cells for ammonia, carbon monoxide, chlorine, hydrogen sulphide, oxygen and sulphur dioxide; in general terms these cells generate a current proportional to the concentration of the target gas. XP sensor modules use catalytic bead sensors for flammable gases or infrared sensors for methane and propane, measuring in %LEL. Both XPIS and XP sensor modules can be wired up to 300 m from the transmitter with two-wire cable, and the transmitter can also accept an Optima point infrared detector.

For each sensor the Honeywell OmniPoint applies configurable alarm levels and drives its outputs. The default current output scheme uses 1.0 mA for fault, 2.0 mA for warm-up and inhibit, 3.0 mA for warning, 4.0 to 20.0 mA for normal measurement and 21.0 mA for maximum over range, with ±1% full-scale signal accuracy. The transmitter automatically detects whether it should operate in current sink or current source mode, and an isolated mode is also supported. This allows the same unit to connect to many types of safety PLC or fire and gas panel.

Engineering Design of the Honeywell OmniPoint

The Honeywell OmniPoint enclosure is five-coat marine-finish painted aluminium alloy or 316 stainless steel. With the display module the transmitter weighs about 2.78 kg in aluminium or 5.70 kg in stainless steel; an XPIS sensor module with cartridge adds 0.80 kg and an XP module 0.69 kg. Four conduit or cable entries (M25 or 3/4 inch NPT) are provided for wiring and sensors, plus one M22 top entry for the optional Bluetooth antenna. The unit can be mounted on flat walls or, with the optional kit, on pipes from 2 to 6 inches in diameter. Ingress protection is IP66/IP67 to IEC/EN 60529 and NEMA 4X.

The user interface of the Honeywell OmniPoint is a 3 inch circular high-resolution colour display with four capacitive touch keys and an LED ring: green for normal operation, red for alarm, yellow for fault or warning and blue for wireless communication. The display shows five-digit readings with units and an alarm snapshot with gas trend. Three fully configurable alarm relays and one normally energised fault relay are rated up to 240 V AC, 5 A. Input voltage is 12 to 32 V DC for catalytic, IR and XPIS sensors and 18 to 32 V DC with Optima, with transmitter consumption of 4.5 W normal and 8.5 W maximum.

Key Features

Key features of the Honeywell OmniPoint from the Honeywell technical specifications are summarised below.

• One transmitter supports up to three sensors at the same time for toxic, oxygen and flammable gases.
• Three fully configurable 4-20 mA channels operate in sink, source or isolated modes.
• HART 7 communication on the first channel supports point-to-point or multi-drop operation with up to 8 devices.
• An optional isolated Modbus RTU module connects the unit to RS-485 networks with addresses 1 to 247.
• An optional Bluetooth 5.0 module enables remote zero and span calibration and configuration from a smartphone.
• The 3 inch full-colour display and LED status ring make detector status visible at a glance.
• Operating temperature extends from –55 to 75 °C, with IP66/IP67 and NEMA 4X protection.
• Honeywell lists a 5-year warranty for the transmitter unit and up to 3 years for many sensor cartridges.

Industrial Applications

The Honeywell OmniPoint suits applications where several gas hazards exist at the same location: wellpads and gathering stations with H2S and methane, gas compression and processing plants, refinery process units, tank farms and loading facilities, chemical plants that handle ammonia or chlorine, and water treatment works. Using one transmitter for multiple sensors reduces the number of field devices, cable runs and panel inputs, which helps on brownfield upgrades in Oman where cable trays and junction boxes are already crowded.

Seven Star LLC supplies the Honeywell OmniPoint with other Honeywell detection products such as the Honeywell XNX Excel gas detector, the Honeywell Searchline Excel Plus open path detector and the Honeywell Sensepoint XRL fixed gas detector. Our engineering team in Muscat supports projects across Oman and the GCC with detector selection and replacement planning.

Technical Specifications

The table lists Honeywell OmniPoint data from the Honeywell technical specifications sheet (US-EN 0125). The sheet shows ATEX, IECEx and performance approvals as pending at that date, so please confirm current certification before ordering for a classified area.

How to Order

To order the Honeywell OmniPoint, send Seven Star LLC the gases and ranges for each detection point, enclosure material, cable entry type and the communication options you need. Our team in Muscat will confirm the configuration and current approvals, share the technical datasheet for download and prepare a formal quotation. Seven Star LLC supplies Honeywell gas detection equipment across Oman and the GCC with engineering support.