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BW GA36XT-H GasAlertClipExtreme 36-

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BW GA36XT-H GasAlertClipExtreme, H2S - 3year

Model: GA36XT-H

The GasAlertClip Extreme single gas detector requires no calibration, sensor replacement, battery replacement or battery charging for up to two years of continuous maintenance-free protection.

This product has been discontinued. Click here for the replacement model(s).

BW Technologies GA36XT-H Offers


  • Durable, reliable and easy to use with no downtime
  • Record keeping is accurate and easy with automatic event logging
  • Exceptionally low cost of ownership
  • User-selectable alarm setpoints (5/10 or 10/15)
  • Compact and lightweight design makes it comfortable to wear
  • Water-resistant
  • Compatible with BW MicroDock II automatic test station
  • Full function self-test of sensor, battery status, circuit integrity and audible/visual alarms
  • Bright wide-angled visual alarm bars
  • Built-in concussion-proof boot
  • Large confidence LCD displays life remaining in months, days and hours
  • Displays peak alarm exposures encountered on demand
  • Internal vibrating alarm for high noise environments
  • Records and transmits gas alarm events

User Options

  • User-activated daily self-test

Sensor Specifications

  • Measuring Range: 0 - 100ppm
  • Low Alarm Level: 10ppm
  • High Alarm Level: 15ppm

Functional Specifications

  • Temperature Range: -40 to 122°F (-40 to 50°C)
  • Humidity: 5% - 95% RH (non-condensing)
  • Alarms: Visual, vibrating, audible (95 dB) - Low, High
  • Tests: Full function self-test on activation and every 20 hours, and automatic battery test every 2 hours
  • Ratings: EMI/RFI: Complies with EMC Directive 89/336/EEC; IP 66/67
  • Certifications and Approvals: Class I, Div. 1, Gr. A, B, C, D; American Bureau of Shipping; ATEX: II 1 G T4, Ex ia IIC T4; IECEx: Ex ia IIC T4; European Conformity

General Specifications

  • Size: 1.1x2.0x3.2 in. (2.8x5.0x8.1 cm)
  • Weight: 2.7 oz. (76 g)
  • Typical battery Life: Three years
  • Warranty: Three years from activation (given normal operation), plus one year shelf life

Key Features:

  • Maintenance-free 3 years of protection with no sensor or battery replacement, no calibration, no downtime
  • Compact (1.1 x 2.0 x 3.2 in. / 28 x 50 x 81 mm) and lightweight (2.7 oz. / 76 g)
  • Built-in concussion-proof boot
  • Peak alarm and the time elapsed since the exposure
  • Automatic event logging records 10 most recent alarm events that can be downloaded via built-in IR COM port to a printer, computer or MicroDock II docking station module
  • 95 dB tone (typical) and bright, quad-LED indication on alarm
  • Internal vibrator alarm
  • Rugged, IP 66/67 highly water-resistant design
  • Full function self-test of audible/visual and vibrator alarms, integrity of sensor, battery and circuitry
  • Three year warranty (life of instrument) including sensors


Standard Versions: units come ready for use; complete with integral water-resistant IP 66/67 concussion-proof housing, sensor, stainless steel alligator belt clip, test cap and instructions.

Humidity 5% to 95% RH (non-condensing)
EMI/RFI Complies with EMC Directive 89/336/EEC

Ingress protection IP 66/67
Battery: Lithium, non-replaceable
Continuously on: Yes
One-button control Activation, self-test and alarm event data transmission
Full functional self-test Verifies integrity of sensor, circuitry, battery and audible/visual alarms
Sensor: Electrochemical cell (temperature compensated)
Operational life: Three years
Visual alarm: Flashing, wide-angled alarm lens with red quad-LEDs, plus fl ashing ALARM icon
Audible alarm Pulsing, high-output siren at 95 dB (typical) at 1 ft. (0.3 m)
Vibrator alarm: Internal
Failure alarm: Yes (audible/visual/vibration)
Self-test pass: Yes (audible/visual/vibration)
Other: End-of-life (audible/visual/vibration)
Life remaining: Continuously displayed in months, then days, then hours
Two alarm levels: LOW alarm / HIGH alarm
Peak alarm exposure: Records and displays peak alarm exposure, and time elapsed (up to 24 hrs.)
Alarm setpoints: High and low (displayed on demand in ppm)
Self-test status Advises to "TEST" and that self-test was passed "u"
Full function self-test: On activation and on demand
Battery: Every two hours (auto)
EVENT LOGGING: Records and transmits up to 10 gas alarm events
Event information Gas type, peak exposure level (ppm or %); alarm duration in minutes and seconds; time elapsed since the alarm occurred in days, hours and minutes, life remaining, serial number, self-tests, cumulative alarm time
Transmission method: Via infrared port to infrared printer or to an IR DataLink
Size: 1.1 x 2.0 x 3.2 inches / 28 x 50 x 81 mm
Weight: 2.7 oz. / 76 g

How to Select the Right Gas Detection Solution

by Don Galman

There are many gas detection products on the market that might appear to be the same, but a closer inspection of specification, functionality and features reveals major differences in what products can do and the potential value they can offer. Similarly, individual applications are also unique in their respective designs, needs and processes undertaken.

Know your site risks

Before beginning to consider gas detection equipment, a risk assessment needs to be conducted. Any company employing staff has the obligation to conduct risk assessments to identify potential hazards and these can include potential gas, vapor or Oxygen deficiency risks. If gas hazards are identified, gas detection is applicable as a risk reduction method.

Identifying the prime objective

Depending on the processes being undertaken and the gases being detected, remote or off-site alarm notification plus event data logging/reporting may also be required for Health and Safety management records. Another factor impacting on the need for enhanced reporting functions might be regulatory compliance or a condition of insurance.

Ask the right questions

Having identified the primary objective, the suitable equipment is selected by asking a number of key questions. These fall into three broad categories:

  • The gases to be detected and where they may come from
  • The location and environmental conditions where detection is to take place
  • The ease of use for operators and routine servicing personnel
Identify the gases to be detected and where they may come from

The gases to be detected should be identified by the risk assessment, however experienced gas detection equipment manufacturers and their approved distributors are often able to help in this process, based on their experience of similar applications. However, it is important to remember that it is the end-user’s responsibility to identify all potential hazards. It is also essential to identify the potential source of a gas release as this helps determine the number and location of detectors required for a fixed gas detection system.

Consider the environmental conditions

The performance, accuracy and reliability of any gas detection equipment will be affected by the environmental conditions it is subjected to. Temperature, humidity and pressure levels at the location all have a direct bearing on the type of equipment that should be selected. Additional factors such as potential variations resulting from a production process itself, diurnal/nocturnal fluctuations and seasonal changes may also affect the type of device which is suitable.

Understand product functionality

The next area of consideration relates to additional product functionality. Aspects like wiring configuration are important, especially when retro-fitting into an existing application. If the apparatus is being integrated into a separate safety system, certain communication protocols may also be required such as HART®, Lonworks or Modbus®. Consideration will also need to be given regarding the requirement for local displays on transmitter units and local configuration of the unit and gas displays may also be a useful addition.

Measure the ease of use for operators and routine servicing personnel

Routine maintenance is another important consideration. Some gases and vapors can be detected with a number of different sensing technologies, e.g. Hydrocarbon gases with catalytic beads or Non-dispersive Infrared NDIR. Catalytic beads do not provide fail-to-safety operation and therefore can require a high frequency of routine maintenance, however NDIR based solutions tend to have a higher initial purchase price, but may require less routine maintenance. In-house resource to undertake such routine maintenance needs to be identified and in the absence of such a resource, budgeting for third party maintenance is an important factor in selecting the right equipment.

Need Help Selecting the Right Solution?

If you have questions about any of our gas detection products or services, please don’t hesitate to contact us. Whether you need a hand finding a new product or need help with your current system, just ask our team of Factory Trained Experts.

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What's included with the BW GA36XT-H

  • BW GA36XT-H GasAlertClipExtreme 36
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    How to: Bump Test a BW Gas Detector

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