Disclaimer prior to 'H10 story- I haven't looked at other detectors quite a while and things do change and improve and all..
I've done this a few times over the years- bailing out a tech with bat' powered detector; Take both out to the hall, cal and settle them. Go back into the room, H10 goes nuts, other one does little or nothing.
Re-cal > and progress.
many guys love h-10 leak detectors.I have 2 and have not had good luck with them.I personally like the D-Tek better.I have had better luck with the D-Dek than H-10.Some other people have better luck with the H-10.Guess it is personal success.They are both suppose to be good.What works best for you,is the one to use.
The is a H-10G, that will detect 134a. Ive owned a H-10g for 10years, a H-10 for 10 years before that. The only thing I have found that is more dependable, is a halide torch, but its only good for chlorinated refigerants. I owned on other leak detector, although I cant remember who made it(I remember it being yellow), would go off if the wind blew, someone farted in the next room, and always when there wasnt a leak...
Here is a list of the common spares for that series detector. I have personally used this series for over 20 years! Just drop the # you need in GOOGLE and it will come up in a store close to you. Personally, I'd go for a full tune-up kit..........
H10G, H10PA and H10PM Accessories and Parts
Part No. Description
3015-0326 14" Flexible Probe
3015-0638 Standard Probe Assembly
3015-0486 Replacement Sensor
3015-0784 Maintenance Kit
3015-0864 Leak Reference Bottle
3015-0641 Clear Probe Tip
3015-0781 Tune-Up Kit
3015-0680 Rubber Probe Tip
I just got off the telephone with a man from Arnold Instuments in Mobile ,Alabama. They sell and repair many HVAC instruments.They sell And repair H-10 and d-tek.I was told that all H-10 regardless of age will pick up all refrigerants(including R410).However the newer ones will pick up better.On an older h-10 you can replace with a new sensor and it should work the same as a newer one.D-teks also work on all refrigerants.However,the newer the better.Makes sense to me.If anybody has any quetions about leak detectors you can call Arnold Instruments In mobile ,Alabama 1-251-478-3230.They really know these products well.They also repair many things.Meters(fluke and others)Reclaim machines,many things check them out.They ship all over the country.They may or may not be your choice,but i can say they have always repaired anything I sent to them very well.Depending on where you live,who you want to use .