Like most organisations we use cookies on our site, these allow us to improve your experience on our site, provides us with measurement and analytical data, and allows us to make use of the latest digital marketing capabilities - if you want to know more about cookies and how you can control them see our cookie policy here, if you are happy for us to use cookies then please click the button opposite.
The images provided are for illustrative purposes only. Please refer to product description.

Testo 316-EX Gas Leak Detector 0632 0336

The Testo 316-EX gas leak detector with ATEX protection means it can also be used in potentially explosive atmospheres both indoors and outdoors.

Next Day Delivery (subject to availability)

£374.99 exc. VAT £449.99 inc. VAT £540.00 inc. VAT
  • 94/9/EG (ATEX); EU-guideline 2014/30/EU
  • Accuracy 1ppm
  • Batteries Supplied
  • Ex Rating II 2G EEx ib IIC T1 (Ex Zone 1)
  • Flexible Shaft
  • Intrinsically Safe
  • Range 0 ppm to 2 Vol.% CH₄
  • FreeDelivery
  • 30DayMoneyBack
Required Fields
  • Description
  • Features & Specification
  • Resources
  • Delivery

Testo 316-EX Gas Leak Detector 0632 0336



When house owners notify the network operator or fitter hat they can clearly smell gas in the house, a highly explosive gas concentration may already be present (4-17%). The fitter has to use a gas detector with ATEX protection for the basic checking of sections of gas pipes for leaktightness or to locate the leak. Because you have to be sure in a hazardous situation that the gas measuring technology being used does not cause an explosion through its own potential ignition sources.

Proof of gas and leakage localisation on gas pipes and installations in indoor and outdoor areas. According to the DVGW information sheet, EX-protection is required in areas in which explosive gas mixtures have formed or are to be expected. The testo 316-EX, which conforms to the guideline 94/9/EG (ATEX), is a multi-range gas detector for the gases methane, propane and hydrogen. The gas concentrations are measured by the semiconductor sensor in the ppm range and are shown in the display with a resolution of 1ppm.

The testo 316-EX gas leak detector offers this ATEX protection (ATEX approval 94/9/EC). Use the multi-range gas detector to detect methane, propane and hydrogen gases. The gas concentrations are measured in the ppm range with a semiconductor sensor and are shown on the display with a resolution of 1 ppm. Flexible measuring probes mean you can search for leaks even in inaccessible areas.


Gas leak detection on gas pipes in the heated environment

When there is a smell of gas in a house, the network operator and/or installer is alerted by the occupant. If the smell of gas is detectable by the nose, a highly explosive concentration of gas (4 % - 17 %) may already be present. The installer now undertakes a basic check of gas pipe parts for leak-tightness or to locate the leak. However, the gas leak detector must have an ATEX protection in this hazardous situation. The term ATEX comes from the French abbreviation for “ATmosphère Explosive”. This is a directive which includes the specification of which structural requirements must be met by measurement systems which have their own potential ignition sources and so could cause an explosion.


Testo 316-EX Comes Supplied With:

  • Testo 316-EX electronic gas leak detector with EX protection
  • Batteries
  • Case
  • Allen key
  • Calibration protocol.

Key Features:

  • Flexible measurement probe for inaccessible pipes
  • 1 ppm resolution on display
  • Indicator suppression for comfortable locating of the leak
  • 94/9/EG (ATEX) conform

About Intrinsically Safe Products

Products that appear on this website that are listed as or relate to a classification of intrinsic safety are titled and described according to our best understanding and/or interpretation of the complex and sometimes changing criteria governing such classification as set out by the Health and Safety Executive.

Please note that due to the volatile nature of the intended use of products in this category,  neither UK Test Instruments or Instrument Sales and Service can be held responsible for any incident that arises from the purchase or use of any product described within this web site. For more information please visit the health and Safety Executive website with specific regard to Hazardous Area Classification and Control of Ignition Sources.


ISSWWW and Testo

Testo Limited was established in 1983 as the UK subsidiary of testo and is based in Alton, Hampshire where they supply a full range of test equipment across the UK and Ireland. They are a key supplier to the Facility Management and Industrial Maintenance Sectors where they are able to provide the full range of instruments which are critical to the effective and efficient maintenance of premises, and allow compliance with all key regulations.

Testo have many innovative products to their portfolio with a modern attractive design. Aesthetic appeal isn't something usually attributed to test equipment but Testo really breaks the mould. Coupled with their pedigree as a worldwide manufacturer and supplier with a proven track record, we are confident in supplying and recommending Testo products without reservation.

Testo 316-Ex Intrinsically Safe Gas Leak Detector 0632 0336
Methane (CH₄)

Measuring range

0 ppm to 2 Vol.% CH₄


1 ppm / 0.1 Vol.%

Lower response threshold

1 ppm

Propane (C₃H₈)

Measuring range

0 to 1.0 Vol.% C₃H₈


1 ppm / 0.1 Vol.%

Lower response threshold

1 ppm

Leak detection H₂

Measuring range

1 ppm to 2.0 Vol.% H₂


1 ppm / 0.1 Vol.%

Lower response threshold

1 ppm

General technical data

Operating humidity

20 to 80 %RH (not condensed)

Reaction time

14 s t₉₀


135 x 45 x 25 mm

Operating temperature

-10 to +40 °C

Protection class



94/9/EG (ATEX); EU-guideline 2014/30/EU


2 years on the instrument; 1 year on sensor

Battery type

2 AA mignon batteries

Battery life

to 10 h

Battery feaute

Type permitted for use in areas with danger of explosion: Camelion Plus Alkaline LR6 (see order data, order no. 0515 0316)

Storage temperature

-10 to +50 °C


Approx. 200 g


II 2G EEx ib IIC T1 (Ex Zone 1)

Orders requiring calibration 

Whilst we take the greatest care to get all orders dispatched and delivered to you in the stated time frame, orders received PM and requiring
calibration may on occasion miss dispatch that day, according to the complexity of the calibration. Be assured they will ship on the next dispatch
this in most cases should not add more than 24 hours to your delivery.

Bank/Public Holidays

Predicted delivery times are based on regular trading days Monday to Friday. Public holidays, bank holidays and weekends are outside the usual scope 
of our dispatch and subject to activities/holidays of our carriers and therefore may incur additional days lead time to your order.

*UK Mainland (Temporarily revised June 2020)

Please note that regrettably, we have had to realign our delivery service options to those available from our carriers.
During the current situation surrounding the effects of the Coronavirus pandemic, logistics from every company are under immense pressure to deliver goods on time.
We have taken the decision to temporarily limit our services rather than let our customers down.
We hope you will understand our position on this and we apologise unreservedly for the inconvenience we know this will cause.
We look forward to restoring our full delivery service schedule just as soon as we are able.

Standard FREE 1-2 Day Courier Delivery – UK Mainland only - Zones A & B

Included in the price for all orders over £75.00 (exc vat). Sent using express courier, delivered within 1-2 working days from the date of your order, subject to availability.


Next Day Anytime Delivery (Excluding Saturday & Sunday) – UK Mainland only - Zones A & B
Sent by express courier, delivered next day (excluding weekends) from the date of your order, subject to availability.


Orders must be placed before 3:00pm for a qualifying next day delivery and a telephone number supplied, subject to availability.

New Postage Map Sept 2018>

Delivery Surcharges

Because of the high cost of carriage, we need to apply a surcharge on all deliveries made in the following regions bringing the carriage charges to:

  • Zones A & B  - Mainland delivery rates apply. 
  • Zone C - Scottish Highlands (Charges are calculated at the checkout).
  • Zone D - Outer Hebrides, Orkney Isles, Shetland Isles, Isle of Man, Scilly Isles, and Channel Islands (Charges are calculated at the checkout).
  • Zone E - Northern Ireland (Charges are calculated at the checkout).
  • Zone F - Republic of Ireland (Charges are calculated at the checkout).

Offshore Services

All offshore deliveries are a 2 day service as standard. This includes Channel Islands, Northern & Southern Ireland, Scottish Islands, Isle of Man and the Scilly Isles.

International Delivery

International delivery charges are automatically added to your order at the checkout. For any questions regarding international deliveries please contact us at


All export inquiries should be directed to the export division before placement of order.

If no shipping option is available to your selected country please call us FREE on 0800 0224 060 to purchase your items.
All stated prices are subject to VAT at the current rate where applicable E&OA