Moisture in oil probe

HYT271 MK33 assembly, fully calibrated, ready-to-use RH/T module in screw-in probe 

HYT271 MK33 in a robust and compact screw-in stainless steel housing with a metric M14 thread. Ideal for test measurements in an industrial environment. Sustains -40°C to +120°C and 0 to 100%RH (water activity aw). Digital I2C interface over 0.5m cable. Compatible with HYT Test board (USB or 0 to 10V analog outputs).

This functional prototype is intended for easy evaluation of oil sample compatibility. Please contact us for support during your tests and to discuss the design of an OEM sensor probe tailored to your application. 

Product Name
Operating humidity range
0 % RH to 100 % RH
Operating temperature range
-40 °C to +120 °C
Accuracy humidity
± 3 % RH at + 23 °C
Accuracy temperature
±0.2 °C
Digital interface
I²C, default address 0x28
Operating voltage
2.7 V to 5.5 V
Current consumption
< 1µA in sleep mode, < 22µA at 1Hz measuring rate
67 x 18 mm L xØ
Connection type
4xAWG26 cable
Wire dimensions
500 mm

Product details

Option: High-end humidity calibration HYT modules

With the development of a high end humidity calibration and measurement set up, the HYT sensor family boasts the accuracy of up to +/- 1.4 % RH and sets new standards for moisture measurement with low hysteresis and easy plug-and-play interchangeability.  

Our three HYT models can be ordered with a tailored calibration, which allows an accuracy of higher than +/- 1.4 % RH when used in combination with a limited range of 0-50 % RH. For dew point applications  measuring in the range of 0-5 % RH, you can even reach an accuracy of < +/- 0.5 % RH.

Contact our experts for more information.


Consistent with the well-known, high-quality standards in Switzerland, IST AG is certified according to ISO 9001:2015 (quality) and ISO 14001:2015 (environment).  Appropriate processes are part of our daily work. They are regularly audited and extended parallel to the growth of our company. 

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