TPI 721 LCD Combustible Gas Leak Detector 10ppm
- Audio/Visual indication
- Hand-held
- Multiple gas detection
- 10ppm sensitivity (methane)
- Instant response
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Information on the calibration of newly purchased equipment and what it means to you.
Calibration and its certification comes in varying forms on new equipment and in this section, we will break it down into the three areas that we use to classify calibration state at the point of purchase.
Manufacturers Calibration Certificate
This is a calibration certificate offered by the manufacturer supplied with the tester. This is also known as an end-of-line certificate or manufacturer’s certificate. These certificates vary depending on the manufacturer and product. They will not have your company's name on them and don’t always show proven test results.
Where applicable we will include the following statement relating to the item/s on the products page under the heading *Important Calibration Information.
This instrument comes complete with the manufacturer's calibration certificate. Please be aware that these certificates are generic and may also be time-lapsed.
If you would prefer a personalised full traceable calibration certificate applied to the equipment before dispatch, then please select this option from the drop-down menu above, an additional calibration charge will apply.Manufacturers Certificate of Conformity
A manufacturer's certificate of conformity is not a calibration certificate. It is merely a statement that the equipment has been produced to operate within its intended application, it has no traceable certificate or constitutes any defined results for accuracy before leaving the manufacturing process.
Where applicable we will include the following statement relating to the item/s on the products page under the heading *Important Calibration Information.
This instrument comes with a ‘manufacturer's certificate of conformity’. It is important to understand that this does NOT constitute a ‘calibration certificate’. A certificate of conformity merely states that the equipment has been designed and produced to meet the requirements of its intended application.
Where calibration of an instrument is possible we will offer this as a separately purchasable item and may be selected from the drop-down box above. You will be sent a full traceable calibration certificate produced in our laboratory and applied with your details as required.Personalised traceable calibration certificate from isswww
This is a calibration certificate created by us at ISS. This certificate is fully traceable to national and international standards. The certificate will show your company's details, tester information, proven test results and the equipment used to carry out the test. Nearly 90% of all calibrations we do are done in-house in one of our many fully equipped laboratories. You can add this service to your order on the product page before you checkout.
Where applicable we will include the following statement relating to the item/s on the products page under the heading *Important Calibration Information.
We are on occasion able to offer FREE calibration on certain products at their point of sale (newly purchased equipment only) please look out for the following badge on the product's page to take advantage of this free offer.
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TPI 721 Combustible Gas Detector
The ergonomically designed 721 is a hand-held, combustible gas leak detector. It is capable of finding combustible gas leaks in pipes, fittings, regulators, etc. Additional features include the capability to display %LEL, leak level in ppm, and user adjustable alarm point.
Perform the following tests and/or measurements with the 721 leak detector:
- Locate combustible gas leaks in joints and fittings
- Determine Lower Explosive Limit percentage
- Determine the combustible gas leak level in ppm (parts per million)
Gases Detected: (partial listing): Acetone, Acetylene, Alcohol, Ammonia, Benzene, Butane, Ethanol, Ethylene Oxide, Gasoline, Hexane, Hydrogen, Methane, Naphtha, Natural Gas, Paint Thinners, Propane, Solvents
Standard accessories:
Carrying Pouch (A780)
Instruction Manual
Battery and Sensor (Installed and Calibrated)
Easily operated with one hand, leaks are pinpointed using the audio and visual indicators. An adjustable “tic” rate helps eliminate background gas concentration in contaminated environments.
- Combustible Gas Leak Detector capable of displaying real ppm, stepped ppm, and %LEL (Lower Explosive Limit)
- 10ppm sensitivity (methane)
- Detect combustible gases including natural gas, propane, butane, etc.
- Thumbwheel adjustable tic rate to locate leaks quickly and accurately
- Two line display with bargraph and backlight
- Audio / Visual alarm indication with user adjustable alarm point
- Earphone jack for use in noisy environments
- Approximately 20 hours of continuous use (C cell alkaline batteries x2)
Frequently Asked Questions
1. What is the difference between the HXG-2 and the 720b?
The HXG-2 is intrinsically safe and has an adjustable alarm.
2. Can I use the 720b or HXG-2 to test for carbon monoxide as well as combustible gas leaks?
The HXG-2 and 720b are designed to detect combustible gas leaks. The 735 or 775 are the best choices to test for carbon monoxide as well as combustible gas leaks.
3. What is the difference between the 735 and 775?
Both the 775 and 735 can be used to test for carbon monoxide in ambient air as well as test for combustible gas leaks. The 735 is pump driven and can be used to test for CO infurnaces as well. When testing for combustible leaks the 775 uses an audible “tic” and visual indication while the 735 has audible indicationand displays the leak level in %LEL.
4. I only need to test for combustible gas leaks, which detector should I choose?
The 725 is pocket sized with LED and audible indicators that activate at preset leak levels. The 725 can detect a leak but does nothave the capability to determine the source. The 720b and HXG-2 are more sensitive, utilize a thumb wheel adjustable “tic” rate, and have goosenecks that enable them to reach into tight areas and not only detect a leak but determine the source. The HXG-2 has an adjustable alarm and is intrinsically safe.
5. I need to be able to produce a “hardcopy” of test results. Do any of the TPI detectors have this capability?
Yes, the 735 has an infrared interface for printing testing results.
6. What gases can be detected?
Gases that can be detected include but are not limited to Acetone, Alcohol, Butane, Gasoline,Kerosene, Methane, Natural Gas, and Propane.
| Key Features | Audio/Visual indication, Hand-held, Multiple gas detection, 10ppm sensitivity (methane), Instant response | |||||||||||||||||||||||||||||||||
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| Product Stock Status | Next Day Delivery (subject to availability) | |||||||||||||||||||||||||||||||||
| Manufacturer | TPI Test Products International | |||||||||||||||||||||||||||||||||
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Updated January 2024
Please note, our cut-off time is 2:00pm
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 scopeof our dispatch and subject to activities/holidays of our carriers and therefore may incur additional days lead time to your order.
*UK Mainland (Revised March 2021)
| Service | Price |
| Standard FREE 2-3 Day Courier Delivery – UK Mainland only - Zones A & B - Order value OVER £75.00 ex VAT | FREE |
| Standard FREE 2-3 Day Courier Delivery – UK Mainland only - Zones A & B - Order value UNDER £75.00 ex VAT | £4.95 |
| Next WORKING Day (excludes Saturdays, Sundays and public holidays) – UK Mainland only - Zones A & B - ANY order value - Order by 2:00pm | £7.75 |
| Saturday ANYTIME Delivery - Order by 2:00pm | £9.95 |
Delivery Surcharges
Because of the high cost of carriage, we regretfully need to apply a surcharge on all deliveries made in the following regions:
- 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 3-4 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 sales@isswww.co.uk
Export
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 discuss your requirements.
All stated prices are subject to VAT at the current rate where applicable.
E&OA