Ūdens iela 23, Riga, Latvija +370 640 20 911 info@tekknow.lv
  • Procesa savienojumi ar 6mm vai 1/4” cauruļu veidgabaliem
  • Parauga ieplūdes spiediens līdz 20 barg
  • Displays %RH and temperature, plus dew-point, absolute humidity and wet bulb temperature
  • Simple to operate
  • Long term stability: ±1% RH over 12 months

The MDM25 is a portable, battery-operated hand-held hygrometer, and is available with a number of different probe confi gurations. It displays relative humidity, temperature and one calculated value, making this hygrometer suitable for a wide range of applications. The user can choose to display either °C or °F.

Hand-Held Hygrometer

Hand-Held Hygrometer

Measurement Units%RH, °C/°F Ta, °C/°F Td, g/m3, °C/°F Tw
Mechanical specification
Ingress ProtectionIP54 - Hygrometer
Hygrometer Housing MaterialMolded polymer housing ABS + rubber surround
Weight300g (10.58oz)
Display ResolutionGraphic LCD 128 x 64 pixels
Electrical output/input
Supply Voltage4.5 V (3 x AA batteries - provide approximately 70 hours of operation)
Electrical ConnectionsM9 5-way triad connector


Measurement Range (RH)0 - 100% RH
Accuracy @ 25°C (77°F) Temperature<±0.2°C (±0.36°F)
Stability - RH Sensor±1% RH/year
Response time - RH Sensor<10 sec typical (for 90% of the step change)
Measurement & Operating range (T)
   Fixed and Standard Probe
   Sword Probe
   Remote Probe

-20 to +80°C
-20 to +100°C
-20 to +150°C
Accuracy @ 25°C Humidity
   Fixed Probe
   Remote Probes

±2% RH (10 - 90% RH)
±2% RH (5 - 95% RH)
Mechanical Specification
Fixed Probe (FPR)30g
Standard Probe (SPR)90g
Sword Probe (SWPR)500g
Round 300mm Probe (HTPR300)  380g
Round 500mm Probe (HTPR500)620g

If you have any questions about this product feel free to contact with us by
email: This email address is being protected from spambots. You need JavaScript enabled to view it. OR phone: +370 (5) 210 22 74.


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SIA "Tek Know Baltic" Latvija, Riga, Ūdens iela 23, LV-1007

Tel: +370 640 20 911, E-pasts: info@tekknow.lv

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