TOC-903-X5 Dual Gas Detector Transmitter

The 903-X5 gas detector transmitter is extremely easy to use. With its digital display showing concentration, alarms, and fault status, and its easy-to-use buttons, the 903-X5 can provide you with all the important information directly from the digital detector head. The 903-X5 can also be equipped with all IGD accessories, ensuring that your gas detector is compatible with all necessary accessories for any environment.

The Most Versatile Gas Detector Transmitter on the Market
This gas detector transmitter is available in ATEX and IECEx-approved enclosures for explosion hazard zones 1 and 2 and dust hazard zones 21 and 22. It is equipped with 2 analog outputs, 1 2-wire addressable output, and 3 relay outputs in a single detector. This allows it to be used independently or as part of a larger addressable network, providing perfect adaptation to any environment. The TOC-903-X5 gas detector transmitter is equipped with a 5-point enclosure for easy access during installation. With IGD’s software design, you can also have two directly connected digital gas detectors, including catalytic, PID, electrochemical, IR, ionic, and semiconductor. With a wide range of sensor options for over 400 different gases and a hands-free, single-person calibration feature, the TOC-903-X5 is the most flexible gas detector transmitter on the market.

Single-Person Calibration – Hands-Free Display
Since the system uses our magnetic rod technology, hot work permits are not required during detector maintenance and installation. This allows you to calibrate, commission, and integrate sensors directly from the gas detector transmitter without a hot work permit. This reduces the time spent on-site for calibration visits and increases safety in potentially explosive environments.

Dual Detector Feature – 5-Point Connection Housing
Our TOC-903-X5 product features our new 5-point ATEX housing design. This allows you to easily install the detector and connect it to third-party systems with easily accessible wiring connection points. Additionally, the 903-X5 has 3 relay outputs, which allows you to control auxiliary devices locally, further reducing installation time and costs.

Finally, the TOC-903-X5 allows you to connect up to two IGD digital gas detectors, enabling you to use any combination of sensor types. When our smart plug-and-play sensors are combined with the TOC-903-X5 gas detector transmitter, the transmitter automatically detects new sensors and provides automatic setup. This significantly reduces time spent in the field and minimizes human error during commissioning and sensor replacement.

Color-Changing Display – System Status at a Glance
Our bright LED display provides users with system status and live gas readings at a glance. With simple color-coded alarms for Green (normal status), Red (alarm activation), and Orange (fault) indicators, personnel working in the area are instantly informed of the current gas situation.

World-Leading 2-Wire Addressable Technology
All these unique features are available in IGD’s leading 2-Wire addressable technology, which reduces cabling requirements and thus saves customers 70-80% on installation. Our 2-Wire technology also enables your gas detector transmitter to communicate digitally, greatly increasing reliability and integrity. Existing systems with only two cables for power and communication can be easily upgraded using the original cabling, and additional detectors and devices can be easily added as needed. If this is not suitable for you, there is no need to worry, as our TOC-903-X5 gas detector transmitter is also available in a classic analog format. This makes it suitable for any system requirement.

2× 4-20mA outputs

3× Relay outputs

5× Off 20mm Entry Ports

Sentinel+™ 2-Wire digital Communication (2-Wire Addressable)

1 Or 2 directly connect gas sensors (dual gas detector)

Non-intrusive, one-person calibration

Colour-changing LCD display

ATEX and IECEx approval for zone 1 and 2 explosive atmospheres and zone 21 and 22 Dust

Ingress Protection: IP66

Housing: Flameproof Aluminium grade enclosure or Marine Blue Powder Coating

Humidity: 0-95% RH non-condensing

Temperature: -20° to 55°C

Weight: 1.2Kg approx.

Long-Life Pellistor

• General Flammable Gases – MK8 Pellistor 0-100%LEL

Infrared

• Carbon Dioxide (CO2) 0-5,000ppm
• Carbon Dioxide (CO2) 0-5% VOL
• General Flammables – 0-100%LEL
• Methane (CH₄) 0-100%VOL
• Sulphurhexafluoride (SF₆) 0-1,000ppm

Electrochemical

• Acetylene (C₂H₂) 0-200ppm
• Carbon Monoxide (CO) 0-100ppm
• Carbon Disulphide (CS₂) 0-100ppm
• Ethylene (C₂H₄) 0-200ppm
• Ethylene Oxide (ETO) 0-10ppm
• Ethylene Oxide (ETO)v 0-100ppm
• Formaldehyde (CH₂O 0-5ppm
• Hydrogen (H₂) 0-1,000ppm
• Hydrogen (H₂) 0-2,000ppm
• Hydrogen (H₂) 0-40,000ppm
• Hydrogen Cyanide (HCN) – 0-10ppm
• Hydrogen Sulphide (H₂S) 0-50ppm
• Hydrogen Sulphide (H₂S) 0-100ppm
• Hydrogen Sulphide (H₂S) 0-5,000ppm
• Nitric Oxide (NO) 0-5ppm
• Nitrogen Dioxide (NO₂) 0-5ppm
• Silane (SiH₄) 0-20ppm
• Sulphur Dioxide (SO₂) 0-5ppm

Photoionisation Detector (PID)

• VOCs 0-10ppm
• VOCs 0-100ppm
• VOCs 0-200ppm
• VOCs 0-1,000ppm
• VOCs 0-2,000ppm
• VOCs 0-5,000ppm

Ionic Ammonia

• Ammonia (NH₃) 0-100ppm
• Ammonia (NH₃) 0-500ppm
• Ammonia (NH₃) 0-1,000ppm
• Ammonia (NH₃) 0-5,000ppm

Long-Life Oxygen

• Oxygen Lead-Free (O₂) 0-25% VOL

Refrigerant Gas Detectors (Contact IGD for full list)

• Infrared Refrigerant (IR) – 0-2,000ppm
• R1 Group Refrigerants – 0-1,000ppm
• R2 Group Refrigerants – 1,000-10,000ppm