Get a Fast Quote
🛠️ Need the Right HVAC Tool for the Job?
Whether you're quoting a bulk order or chasing hard-to-find tools, we’re here to help.
Get a fast, personalised quote—no pressure, no spam!
Fill out the form below and we’ll get back to you ASAP.
📩 Request a Quote
Description
INFICON 724-701-G2 is the OEM CO₂ (R744) replacement sensor for the D-TEK Stratus® and D-TEK® 3 leak detectors. If your readings are drifting or response is sluggish, a quick sensor swap gets you back to high-sensitivity CO₂ leak finding with fewer call-backs. Too easy.
Key features & trade benefits
- CO₂-specific infrared sensor (R744) — pinpoint CO₂ leaks accurately on ref rigs, display cases and heat pumps.
- High sensitivity (≈ 0.07 oz/yr | 2 g/yr, EN14624) — pick up small leaks faster and cut diagnostic time.
- Approx. 1,000-hour sensor life — long run-time between swaps; plan maintenance, reduce surprises.
- Drop-in cartridge for D-TEK Stratus & D-TEK 3 — field-swap in minutes; no recalibration faff.
- Genuine INFICON part — reliable performance and fit—fair dinkum OEM quality.
Why this sensor matters on real jobs
Cold room alarm going off in a supermarket on a sticky Sydney afternoon? Pop the 724-701-G2 into your Stratus, and you’re straight back to crisp, stable CO₂ response. One tech told us he swapped the cartridge on the loading dock, traced the leak at a flare, and had the case temps dropping again before knock-off. No worries.
Rounding out your kit? Check our refrigerant leak detectors to build a complete detection workflow from find → verify → fix.
Pro tip
If response feels dampened, change the sensor and filters together. After the swap, let the instrument run in fresh air for a minute before you hit the plant—response stabilises faster and you’ll avoid false positives. Handy on humid Brisbane sites where moisture can linger.
Compatibility & system info
- Compatible instruments: D-TEK Stratus® and D-TEK® 3 (CO₂ mode).
- Refrigerant: CO₂ (R744).
- Sensor type: Infrared (NDIR), CO₂-specific.
What’s included
- 1 × INFICON 724-701-G2 CO₂ Replacement Sensor module.
Specifications
| Part number | 724-701-G2 |
| Compatible models | D-TEK Stratus®, D-TEK® 3 |
| Refrigerant | CO₂ (R744) |
| Sensitivity (R744) | ≈ 0.07 oz/yr (≈ 2 g/yr), tested to EN14624 |
| Sensor life | ~1,000 hours (typical) |
| Installation | Tool-free, user-replaceable cartridge |
Warranty & returns
Sensors are considered consumables for manufacturer warranty purposes. For store policy details, see Shipping & Returns.
Work must comply with Australian refrigerant handling rules; licensed techs only.
FAQs
Will this fit my instrument?
Yes — D-TEK Stratus® and D-TEK® 3 when used for CO₂. It’s the OEM CO₂ cartridge.
How often should I replace it?
Typical life is around 1,000 hours, but high-moisture or high-use sites may shorten that. If response slows or zero won’t stabilise, swap it.
Do I need to recalibrate after installing?
No special calibration steps — allow a brief run-in in fresh air and follow the instrument prompts.
Related products
- INFICON D-TEK Stratus Leak Detector — pair with this sensor for CO₂ jobs and switch back to standard refrigerants when needed.
- INFICON D-TEK 3 Leak Detector — flexible platform that accepts CO₂, standard and flammable sensors.
- INFICON Stratus Spare Parts Kit — keep filters and caps fresh so the new sensor performs at its best.
Any question?
If we still haven't answered your question, you can contact us below and we will get back to you as soon as possible.
You may also like
Recently viewed
Popular Brands We Distribute
