149HDS – Humidity sensor in aluminium housing

147wd-air probe-wall mounting-alu

147wd-air probe-wall mounting-alu

Humidity sensor in robust aluminium design.


The 149HDS is a sensor in aluminium housing with a cut away stainless steel measuring point.  This sensor is specifically intended for measuring relative air humidity. 

  • 149HDS: Humidity sensor  in aluminium housing 20-95%, output 0-100% = 4-20mA
  • 149HDSPT: Combination sensor Temperature PT100/3L and RH measurement 0-100%= 4-20mA
Possible applications
  • Cool/Freeze cells.
  • Computer rooms/Machine rooms.
  • Storage spaces.
Measurement element PT100
Measurement system 3-lead technology.
Temperature range For the correct version, please feel free to contact us.
Materials Housing: aluminium, sensor: stainless steel-316. 
Dimensions Housing: – ,Sensor: As requested with order.
Process connection Housing suitable for wall mounting.
Connection cable Screw connection in the housing is supplied without cable.
IP-norm  IP-65 
(the cut away measuring section of the 149 air probe is not watertight).
(for supplement) 
  • Measurement system PT100 1/3 Din selection.
  • Measurement system PT100 1/5 Din selection.
  • Measurement system PT100 1/10 Din selection.



• Brochure
• Further information about dimensions, connection and cables is given on the Support pages.


The delivery of standard types from stocks and customer-specific versions can be within a few days. In view of the large number of version and options for orders you can contact our sales department tel. +31 50-501 37 45 or by email: