Detecting Natural Gas and Hydrogen in One Instrument


Teledyne Gas & Flame Detection is releasing an enhanced version of the popular Gasurveyor 700 (GS700), known as the GS700-Hydrogen. This upgraded model incorporates the capability to detect hydrogen (H2


), in addition to its existing ability to detect natural gas (NG). This integration of natural gas and H2 detection within a single instrument enhances versatility and performance across various gas utility applications. Notably,


extensive testing and collaboration with major UK gas utility companies played a crucial role in the development of this new instrument. Whether it’s natural gas, pure hydrogen (100% H2


), or hydrogen blends, the portable GS700-Hydrogen simplifies gas detection across applications


like outdoor and indoor leak detection, purging, barholing and pipeline gas testing. Providing safety and peace of mind, the fully ATEX-certified instrument enables utilities to quickly determine the source of gas leaks.


The development of the lightweight (1.4kg) yet durable GS700-Hydrogen was supported by comprehensive field trials aligned with the hydrogen transition efforts of prominent UK utility companies: SGN and Northern Gas Networks.


In Scotland, SGN’s H100 Fife project will establish the world’s first green hydrogen gas network in Levenmouth, Fife. This pipeline, entirely dedicated to 100% hydrogen, will run parallel to the existing natural gas distribution pipeline, providing customers with a choice between the two gases. SGN collaborated with Teledyne Gas Measurement Instruments, a Teledyne GFD brand, to develop the GS700-Hydrogen. This collaborative process ensured the instrument’s suitability for emergency response and engineering teams, enabling them to precisely detect and locate both H2


and natural gas leaks. The collaboration resulted in refining the instrument’s operation and validating its technology.


Teledyne GMI subsequently partnered with Northern Gas Networks as part of the UK’s ‘H21’ hydrogen homes project. Northern Gas Networks adopted the GS700-Hydrogen to ensure safety within their H21 networks and measure hydrogen during activities like purging and pipeline commissioning.


The successful outcome of this collaborative development approach, under real-world operating conditions, led to the inclusion of many added-value features. These include user-friendly display options that provide


comprehensive gas readings at users’ fingertips. The instrument displays LEL, PPM and volume gas readings, with 360° alarms ensuring operator safety. Users can effortlessly view either the total flammable reading or the individual LEL readings (natural gas or hydrogen) at the touch of a button. The user interface is fully configurable, allowing customisation to the specific requirements and preferences of gas utilities.


Dedicated application modes, such as gas leak outdoors, purging, barholing and search operations, offer inherent flexibility. Each mode delivers fast and accurate measurements, aiding in swiftly pinpointing gas leaks and ensuring utilities are best equipped to protect people and safeguard property. Additionally, the GS700 incorporates compliance features through intelligent data-logging and optional GPS mapping. These functionalities simplify data collection and empower managers to make informed decisions based on data driven reports.


With the new GS700-Hydrogen from Teledyne Gas and Flame Detection, any gas utility involved in hydrogen transitioning can now leverage the benefits of both H2


and natural gas detection using a high-performance


and highly flexible all-in-one instrument. More information online: ilmt.co/PL/Ve2y


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There are many prerequisites when it comes to gas detection, not least maximum flexibility, increased performance and minimal installation costs. Add in modern expectations such as smart features and the ability to detect explosive, toxic or asphyxiant gases, and the list of potential solutions soon becomes short. Prominent among the choices, however, is the proven and increasingly popular iTrans 2 fixed gas detector from Teledyne Gas & Flame Detection.


Offering smart sensor capabilities that support an intelligent electronics platform, the iTrans 2 provides one or two points of detection from a single head for maximum flexibility, with both readings shown on the standard-issue, LED and display. Gas sensors are mountable directly to the transmitter, or remotely.


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For the detection of explosive and toxic gas, or oxygen, the iTrans 2 accepts infrared, catalytic bead or electrochemical sensors. Specifically, in addition to the LEL (lower explosive limit) sensor range, the iTrans 2 is configurable with a 0-100% volume methane infrared sensor for bio-gas applications and CO2


sensors ranging from 0.5% to 100% volume. All are pre-calibrated using smart technology to enable automatic sensor recognition and data transfer. The device displays sensor life data automatically after each calibration.


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Offering cable-saving and time-saving installation, the iTrans 2 is suitable for almost any application via common configurations that include 3-wire (4-20mA) and 4-wire (digital ModBus) models. Both allow for full utilisation of the gas detector’s features and options, and use with all iTrans 2 sensors.


iTrans 2 offers analogue 4-20mA and digital RS-485 Modbus (9600 baud) outputs. The HART communication protocol is optional, enabling remote communication across the 4-20mA signal for diagnostics, commissioning and calibration. A simple magnetic wand further aids ease of use by allowing full transmitter configuration and calibration without opening the explosion-proof housing.


The housing comes as standard in epoxy-coated aluminium, with an optional 316 stainless steel version available for corrosive environments. Operating temperature is -40°C to +75°C. Although this robust specification is ideal for many heavy industry applications, the iTrans 2 is equally at home in smaller systems and boiler rooms, for example. Indeed, this tried and tested gas detector is suitable for sectors that extend from oil and gas, offshore drilling, utilities and petrochemical, through to water and wastewater treatment, and food and beverage production. Certifications include CSA, ATEX, IECEx, INMETRO, CCC and China Ex.


Notably, the microprocessor-controlled transmitters are capable of plug and play, stand-alone operation or multi-point system configuration. The monitor’s stand-alone operational ability arrives courtesy of optional on-board relays that can activate alarms, horns or fans, and can also shut down a system without the need for return wiring to a central control panel.


With so much versatility and functionality, whatever the application or requirement, the iTrans 2 from Teledyne Gas & Flame Detection has already proven itself as the market’s most comprehensive and competent tool for the job.


More information online: ilmt.co/PL/o77j For More Info, email:


email: 61163pr@reply-direct.com For more information visit teledynegasandflamedetection.com


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infrared 61138pr@reply-direct.com


Versatile, high-performance gas detection with easy deployment


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