Testo Inc.
40 White Lake Road
Sparta, NJ 07871

Phone: (800) 227-0729
Email: Info@testo.com
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testo 435-1

testo 435-1, multi-functional meas. instr., for A/C, ventilation and Indoor Air Quality, with battery and calibration protocol

The measuring instrument for ambient air conditions, for assessing Indoor Air Quality and adjusting and inspecting VAC systems. testo 435-1 is an affordable introduction to measurement engineering for ambient air conditions. The new IAQ probe measures Indoor Air Quality by measuring CO2 level, air moisture and air temperature. Temperature and humidity measurement is integrated in the new thermal probe. In addition, it is also possible to connect additional temperature probes. Readings from up to 3 temperature probes can be displayed in the clearly laid-out measuring instrument display; data transmission is radio-controlled, therefore wireless. Measurement data is printed on site on the Testo printer.

  • IAQ probe for assessment of Indoor Air Quality
  • Vane measurement and thermal probes
  • Radio probe for temperature
  • Testo printer for documentation
  • Protection class IP54

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Not available for purchase online
Order number 0560 4351
Probes Accessories Certificates Technical Data Brochures  
Storage temperature -22 to +158 °F
Operating temperature -4 to +122 °F
Battery type Alkali manganese, mignon, Type AA
Battery life 200 hr (typical vane measurement)
Weight 15 oz
Dimensions 86.61 x 29.13 x 18.11 in
Material/Housing ABS/TPE/Metal
Probe type Typ T (Cu-CuNi)
Meas. range -328 to +752 °F
Accuracy ±0.54 °F (-76 to +140 °F)
±0.5% of rdg. (remaining range)
Probe type NTC
Meas. range -40 to +302 °F
Accuracy ±0.36 °F (-13 to +166.82 °F)
±0.72 °F (-40 to -13.18 °F)
±0.72 °F (+167 to +211.82 °F)
±0.5% of rdg. (remaining range)
Probe type Type K
Meas. Range -328 to +2498 °F
Accuracy ±0.54 °F (-76 to +140 °F)
±0.5% of rdg. (remaining range)
Probe type CO2
Meas. Range 0 to +10000 ppm CO2
Resolution 1 ppm CO2
Probe type Absolute pressure probe
Meas. Range 0 to +800 inH2O
Probe type humid. sensor, cap.
Meas. Range 0 to +100 %RH
Resolution 0.1 %RH
Probe type Hot Wire
Meas. Range 0 to +3937 fpm