SRH77A TWO Temperature Zone plus Humidity Thermo-Hygrometer - Tech Instrumentation

Cooper-Atkins SRH77A-E-NIST 2 Zone Temperature/Humidity Meter with Certification

  • $423.52 USD
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The Cooper-Atkins SRH77A is a feature packed meter that consistently beats out the competition. It includes 2 temperature probes and an RH probe. The electronics are built into a rugged case. Temperature range is -40/300F (-40/150C). RH range is 10/95%. Special features include Wet Bulb, F/C, Backlight, Temperature Differential, Scan Mode and Auto Shut-off. This humidity and thermo-hygrometer is a Value Priced Workhorse for your HVAC work. The humidity probe should not be used above 150 degrees F. 

Brand New, Factory Fresh - Includes Full Warranty and all Standard Probes
NIST Traceable Certification provided by Tech Instrumentation

While the temperature probes can be used to a maximum of 300 degrees, the humidity probe should not be used above 150 degrees F. Temperatures over 150 degrees F will damage the humidity probe. Further, if used in an environment which is smoky or where contaminants present, the humidity probe will likely be damaged. Probes that are used under any of these conditions can not be warranted.

If you have a high temperature/high humidity application, please call our Applications Engineers at 800-390-0004 x1002. The most cost effective way to determine relative humidity at high temperatures is usually to use the Wet Bulb/Dry Bulb method. Call for details.


  • Backlight Backlight display
  • Certifications CE, RoHS, NIST, WEEE
  • Temperature Diff Temperature differential between zones 1 & 2
  • Case Rugged Hard Carrying Case
  • Auto Shut-off after 15 minutes of non-use or continuous ON mode
  • Humidity 10 to 95% RH, 90% non-condensing
  • RH % RH and Wet Bulb
  • Zones 3 Zones
  • Switchable °F/ °C Yes
  • Memory Min / Max memory
  • Warranty 5 Year Instrument Warranty, 1 Year Probe
  • Calibration Factory Calibrated
  • Keypad Sealed Keypad which protects instrument from spills & dust
  • Temperature Range 
  • -40 ° to 300 °F ( -40 to 150 °C)


Attempting to measure temperatures over 300 degrees F will destroy the thermister sensor. 300 is an absolute maximum temperature.

  • Temperature Accuracy ±0.3 °F or ±0.5% Reading, whichever is greater
  • Resolution 0.1 °, 1% RH
  • Weight 1lb 5oz (595g)
  • Dimensions 9.5" x 6.5" x 3.5" (241 mm x 165 mm x 89 mm)
  • Battery Type (1) 9Volt Alkaline
  • Battery Life 90 hours

 

 

  • Includes: Model 1075 General Purpose Probe, 4011 Surface Probe, 5028 Humidity Probe, hard carrying/storage case, (1) 9V battery
  • Optional Accessories: 
  • 10' (3.1 m) extension cable, Model 9010 / 50' (15.2 m) extension cable, Model 9015
  • Battery eliminator, 9 VDC 100 MA regulated, Model 9317

 

Relative Humidity Engineering Notes:

Between 20 and 80 percent relative humidity, the accuracy is +/- 2%, and below 20 percent or above 80 percent relative humidity, the accuracy is +/- 3%.

While the temperature probes can be used to a maximum of 300 degrees, the humidity probe should not be used above 150 degrees F. Temperatures over 150 degrees F will likely damage the humidity probe.

If you have a high temperature/high humidity application, please call our Applications Engineers at 800-390-0004 x1002. The most cost effective way to determine relative humidity at high temperatures is to use the Wet Bulb/Dry Bulb method. Call for details.

aka 6T444, B003WQ9CBW, CPSRH77A-E, CPSRH77A-E,G31466566T444, 34654, srh77a 2

 

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Works perfectly and setup instructions were very clear.

Sensor replacement

The new sensor works good, easy to find, fast shipment, highly recommend.

Didn't work

Did extensive online search for outdoor temp transmitter for La Crosse time/temp clock. Ordered one suggested in cross reference chart. Worked for 2 hours and quit. Replaced batteries to no avail. Don't have time to go thru return process for a $20 item.

Hi Lovelle, This is usually an indication that your base unit has stopped working. Feel free to return your order for a refund.
A very good replacement!

The remote temperature sensor met my expectations!

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