Thermostats low temperature range

[pqsl]

I am looking for industrial thermostat to be able to sense ambient air temperature less than 20Deg. F (accuracy is not important) with dry NO or NC contacts. There is no problem to find 30Deg. F. Any suggestions here without using 4-20ma or external power?

 

[dpc]

Maybe this? (only $240!):

http://www.wescodirect.com/cultures/en-us/Products/ProductListDetail.aspx?pik=47669&productId=47669

 

[danw2]

Look at United Electric's mechanical temperature switches.

Series 54, model E54-D21BC(9333) has a 6'copper capillary bulb with a setpoint range down to 0°F at $145; or hte C54 with a brass immersion stem @ $95.

http://www.lesman.com/downloads/s14_switches.pdf

(bottom of page 19 of 22)