The RHTemp1000Ex humidity and temperature data logger carries hazardous location certification (ATEX, IECEx). Includes ISO 17025 accredited calibration certificate. Read More >

Key Features:

  • Compact Size
  • ATEX Approved
  • Measures Temperatures from -40 °C to 80 °C


MadgeTech recommends annual calibration.


The RHTemp1000Ex is a compact, humidity and temperature data logger that carries hazardous location certification (ATEX, IECEx).

This one of a kind data logger is certified intrinsically safe for the following:

  • Electrical Protection Concepts: ISO/IEC: 60079-11 Ex ia – Ex ic, Intrinsic Safety Zones 0-2
  • Equipment Protection Level: Ga – Gc, Zones 0-2
  • Gas Group: IIC
  • Temperature Class: T4

This device measures and records temperatures from -40 °C to +80 °C (-40 °F to +176 °F) with an accuracy of ±0.5 °C (0 °C to ±50 °C) and ±0.9 °F (32 °F to 122 °F). The RHTemp1000Ex can store up to 32,767 time and date stamped readings, and is able to be programmed to start up to 24 months in advance.

The RHTemp1000Ex is compatible with the latest MadgeTech 4 Software making starting, stopping, and downloading simple and easy. Graphical, tabular, and summary data is provided for analysis and can be viewed as customizable engineering units.


Memory32,767 readings
Reading Rate 1 reading every second up to 1 reading every 24 hours
Battery Life 2 years typical at 15 minute reading rate
Material316 Stainless Steel/Radel
Dimensions1.67 in x 0.97 in dia. (42.3 mm x 24.6 mm dia.)
IP Rating(Not Rated) Caution: Do not submerge this product to retain IS rating.
Operating Environment -40 ºC to +80 ºC (-40 °F to +176 °F)
0 %RH to 100 %RH (case properly sealed)
Required Interface Package IFC400 or IFC406
ATEX Certificate #: 19ATEX0126
IECEx Certificate #: BAS 19.0109


Temperature Sensor Resistance Temperature Detector (RTD)
Temperature Range -40 °C to +80 °C (-40 °F to +176 °F)
Temperature Resolution 0.01 °C (0.018 °F)
Temperature Calibrated Accuracy ±0.5 °C (0 °C to ±50 °C), ±0.9 °F (32 °F to 122 °F)


Humidity Sensor Capacitive Polymer
Humidity Range 0 %RH to 100 %RH (non-condensing)
Humidity Resolution 0.1 %RH
Humidity Calibrated Accuracy ±3 %RH maximum
Humidity Specified Accuracy Range25 %RH to 75 %RH
+20 °C to +40 °C (68 °F to 104 °F)
Hysteresis Error 1 % typical, 3 % Maximum


RHTemp1000Ex Product User Guide
RHTemp1000Ex Specification Sheet

IECEx Certificate of Conformity


Part Numbers

RHTemp1000Ex — 902154-00


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