Recommend a thermometer gun thing.

[Russell griffiths]

Hi looking for a good point and read thermometer gun thing. 
I would like to point it at mvhr ducts and get an idea of the temp running through them. 
 

is it possible to get something that I can point at the fresh air plenum to see what is being blown into the rooms. 
 

had a cheap £12 one from e bay and it constantly read 3-4 degrees out all the time, sent it back on principal. 
would like something better really without spending £300 on one like they have in city plumbing, there must be something middle of the road. 
cheers. 

[Nickfromwales]

15 minutes ago, Russell griffiths said:

Hi looking for a good point and read thermometer gun thing. 
I would like to point it at mvhr ducts and get an idea of the temp running through them. 
 

is it possible to get something that I can point at the fresh air plenum to see what is being blown into the rooms. 
 

had a cheap £12 one from e bay and it constantly read 3-4 degrees out all the time, sent it back on principal. 
would like something better really without spending £300 on one like they have in city plumbing, there must be something middle of the road. 
cheers. 

IR point and see ones seem to give big differences based on the colour or effectiveness of the thing they’re pointed at. That’s largely why I’ve not bothered as largely they’re shite.

 

A good FLIR camera attachment to a mobile phone seems a good solution, or just a cheap Chinese android phone with the facility built in.

 

One of those ‘get what you pay for’ situations methinks. 

[SimonD]

Topdon have this on sale on amazon right now: https://www.amazon.co.uk/dp/B0DJQ91653/ref=sspa_dk_detail_2?psc=1&pd_rd_i=B0DJQ91653&pd_rd_w=WtqBx&content-id=amzn1.sym.9a64fe05-cdee-4d53-a27b-f3614d726545&pf_rd_p=9a64fe05-cdee-4d53-a27b-f3614d726545&pf_rd_r=DCY5A3JDRDX0B55FQ81X&pd_rd_wg=8KGNE&pd_rd_r=c53ae250-2421-4060-948f-40fb46782dd4&aref=UNy5aGjL5p&sp_csd=d2lkZ2V0TmFtZT1zcF9kZXRhaWxfdGhlbWF0aWM

 

I have their version that attaches to the phone, which is great but I don't think I paid anything close to what they're asking for now: https://www.amazon.co.uk/dp/B0FFMHNDXM/?_encoding=UTF8&aref=FCWnrz47ke&pd_rd_i=B0FFMHNDXM&ref_=sbx_be_s_sparkle_ssd_img&qid=1767798926&pd_rd_w=6ua5j&content-id=amzn1.sym.7d8787df-7d4c-460d-ab31-21b0ba272b2f%3Aamzn1.sym.7d8787df-7d4c-460d-ab31-21b0ba272b2f&pf_rd_p=7d8787df-7d4c-460d-ab31-21b0ba272b2f&pf_rd_r=9B0GAABG10RHT7HCD0VE&pd_rd_wg=vOgfl&pd_rd_r=9e2b9072-7eae-4a6b-b97c-9d1b70393079&pd_rd_plhdr=t

 

 

[Post and beam]

I bought this and am really happy with it. Cannot possibly do the job without something like this.

 

Thermal master, the worlds smallest thermal camera. Uses the phones screen as the display.

[Post and beam]

[Nick Laslett]

Definitely a difficult subject area to navigate. Loads of misinformation and dirty tactics from manufacturers. 
 

This is a very good forum for discussions about thermal Imaging cameras. 
 

https://www.eevblog.com/forum/thermal-imaging/
 

This shop is good place for info and comparisons, not sure if they still supply the UK. 
 

https://eleshop.eu/inspection/thermal-imaging-cameras.html

 

I bought the Hikmicro B10, £299 on Amazon. 
 

https://www.amazon.co.uk/HIKMICRO-Resolution-Measurement-4°F-1022°F-Temperature/dp/B09FTFHTPR

 

[SteamyTea]

My cheap IR thermometer from Lidl is pretty good.

As said above, the reflectivity of the object can change the reading.

You can calibrate them easily with a photocopy grey scale card.

[Russell griffiths]

Thanks all will have a read up tomorrow on all your suggestions.