Min Max Thermometer

I use Brunton ADC Wind – has a wind meter – also does minimum temp – buttons easy to push

If all you want if min./max you could go with something like this which is less than an ounce.

http://www.ambientweather.com/mamidt572wpb.html

Jerry,

That looks like it would do everything I want and more. I'd prefer to go a bit lighter, however, as I may be carrying two of them. Looks like the Brunton ADC weighs 1.7 ounces, per a review I found on the net.

Thanks,

Daryl

Deleted accidental double entry.

Alex,

This looks good. Hadn't seen it before.

I e-mailed the company with these questions but maybe you have one and know the answers?

It has an auto shut-off feature. Will that prevent me from leaving it on for 24 hours and then reading the min/max numbers?

I particularly like the under 1 ounce weight you mentioned.

Thanks,

Daryl

Cigar humidor thermometer/hygrometers would do what you're looking for….

Daryl,
I don't have one yet so can't answer your question but look forward to what you find out. I have seen similar ones with probes but this one intrigued me as it was smaller and waterproof.

Ive seen this one posted before. Seems like a nice one to have with max and min option but haven't really found a reason to spend 30$ on one YET :)

http://www.tiptemp.com/products/21903/traceable-stick-thermometer

Daryl,

Thanks for this thread – I have one by Oregon Scientific that weighs almost 4 ounces and would love to replace it with something lighter. I really like knowing the minimum temperature so I can evaluate how my choice of sleep system and clothing performed. I'm a hammocker so I don't need inside/outside. The other thing about my OS model is that it's NOT waterproof!

The Mannix model looks pretty nice.

There are also very inexpensive and light data loggers that record for as long as you want but you don't have a current temp readout and you will have to down load the data when you get home. I too always want to know the minimum as it helps to fine tune the sleep and clothes systems.

One of several threads on Data Loggers.

Radio Shack has one (had one?) that's a simple keychain/clock/thermometer about the size of a packet of sugar (bit thicker though). It records min/max temp. but also the last 8 hours (max) or so of actual temperatures. This paints a better picture of temperature drop over time, instead of mere min. temp. The only drawback is you have to record the data manually as soon as you wake up!

One thing to keep in mind about all these portable thermometers is that their temperature accuracy varies (don't be fooled by "resolution to 0.1 deg F," and some can't measure accurately below a certain temperature. Here's the accuracy and temp. limits for the thermometer above:

± 3.6°F from 14°F to 31.82°F (± 2°C from –10°C to –0.1°C)
± 1.8°F from 32°F to 86°F (± 1°C from 0°C to 30°C)
± 3.6°F from 86.18°F to 122°F (± 2°C from 30.1°C to 50°C)

This thermometer can't record accurately below 14F. Also, when below freezing, when temp. for sleep systems is most important, a reading of 25F could be actually 21.4F or 28.6F! I suppose some of the portable lab-grade instruments (like Kestrel and maybe Brunton) fare better, but cost a lot more and weigh more.

another option at .7oz
http://www.extech.com/instruments/product.asp?catid=38&prodid=185

Two of you are linking to probe thermometers. Is that really what you want?

After thinking about this issue I’ve decided to use another thermometer that I already own. It is a min/max indoor/outdoor thermometer that I have used before while backpacking and also used inside/outside my home for about a year.

Looks like it is available on the net for less than $10. I didn’t buy the one I have from this link but this link will give you more info than I am giving here. Timex

It weighs about 2 ounces but it takes the place of two thermometers. So the per thermometer weight is about 1 ounce.

The main unit, with the digital display and control buttons, hangs in the tent and will give min/max temps for the tent. A 10 foot long wire connects to a sensor that will give the min/max temps for the outside. I can get real time readings anytime I want and clear the min/max temps anytime I want….from inside the tent.

The main unit isn’t waterproof but it will hang inside the tent where I should be able to keep it dry. The outside sensor and wire appear to be at least weather resistant as they are coated. I’ve used it backpacking before with no problem but only time will tell how long it will last backpacking.

Edit: Most of the reviews I have seen on the net for this thermometer, unfortunately, have been negative. Several of the reviewers said it didin’t work when received or quit working shortly thereafter. Looks like I have been lucky with this one.