[![compo hygro probes](/sites/default/files/styles/product_image/public/images/compo%20sondes%20hygro.png?itok=zSuBQtFj)](https://www.kimo-instruments.com/sites/default/files/styles/max_1300x1300/public/images/compo%20sondes%20hygro.png?itok=XxarPqtC)

 

 

 Ref: Si-PRO-U-I-150, Si-PRO-U-I-300, Si-PRO-U-150, Si-PRO-U-S

  

 

**Si-PRO-U-I-150 / Si-PRO-U-I-300**

Hygrometry probe with stainless steel body with stainless steel filter. Autolocking connector.  
Si-PRO-U-I-150: probe length 150 mm, Ø 13 mm.  
Si-PRO-U-I-300: proble length 300 mm, Ø 13 mm.  
[Si-ACC-R2](https://sauermanngroup.com/en-INT/node/34904) probe cable for connection to class 320 transmitters is needed.

**Si-PRO-U-150 / Si-PRO-U-S**

Polycarbonate hygrometry/temperature probe with plastic body and stainless steel filter. Autolocking connector.  
Si-PRO-U-150: Length 150 mm, Ø 13 mm. [Si-ACC-R2](https://sauermanngroup.com/en-INT/node/34904) probe cable for connection to class 320 transmitters is needed.  
Si-PRO-U-S: Length 150 mm, Ø 13 mm. Connects directly to Si-C320 transmitters.



 [  Technical Data sheet ](https://www.kimo-instruments.com/sites/default/files/files/DS_probes_transmitters_class320_EN_23-02-26.pdf) 

 

       High accuracy 

 

       Long-term stability 

 

       Reliable measurements 

 

       Interchangeable 

 

 

 

 


 Product info   #### Measure details

- Units
    
     
    
    °Ctf, °F, °Ftf, °C, % RH, °Ctw, °Ctd, °Ftd, °Ftw, g/m³, g/kg, kj/kg
 
 ![shadow](/themes/custom/kimo/images/divider-big.png) 

 

#### Measuring ranges

- Si-PRO-U-I-150/Si-PRO-U-I-300
    
     
    
    -40.00 °C ... 150.00 °C
- Si-PRO-U-I-150/Si-PRO-U-I-300
    
     
    
    -40.00 °F ... 302.00 °F
- Si-PRO-U-I-150/Si-PRO-U-I-300
    
     
    
    0.00 % RH ... 100.00 % RH
- Si-PRO-U-I-150/Si-PRO-U-I-300
    
     
    
    -50.00 °Ctw ... 100.00 °Ctw
- Si-PRO-U-I-150/Si-PRO-U-I-300
    
     
    
    -58.00 °Ftw ... 212.00 °Ftw
- Si-PRO-U-I-150/Si-PRO-U-I-300
    
     
    
    -50.00 °Ctd ... 100.00 °Ctd
- Si-PRO-U-I-150/Si-PRO-U-I-300
    
     
    
    -58.00 °Ftd ... 212.00 °Ftd
- Si-PRO-U-I-150/Si-PRO-U-I-300
    
     
    
    -50.00 °Ctf ... 100.00 °Ctf
- Si-PRO-U-I-150/Si-PRO-U-I-300
    
     
    
    -58.00 °Ftf ... 212.00 °Ftf
- Si-PRO-U-I-150/Si-PRO-U-I-300
    
     
    
    0.00 g/m³ ... 1000.00 g/m³
- Si-PRO-U-I-150/Si-PRO-U-I-300
    
     
    
    0.00 kj/kg ... 15000.00 kj/kg
- Si-PRO-U-I-150/Si-PRO-U-I-300
    
     
    
    0.00 g/kg ... 1000.00 g/kg
- Si-PRO-U-150
    
     
    
    -40.00 °C ... 80.00 °C
- Si-PRO-U-150
    
     
    
    -40.00 °F ... 176.00 °F
- Si-PRO-U-150
    
     
    
    0.00 % RH ... 100.00 % RH
- Si-PRO-U-150
    
     
    
    -50.00 °Ctw ... 100.00 °Ctw
- Si-PRO-U-150
    
     
    
    -58.00 °Ftw ... 212.00 °Ftw
- Si-PRO-U-150
    
     
    
    -50.00 °Ctd ... 100.00 °Ctd
- Si-PRO-U-150
    
     
    
    -58.00 °Ftd ... 212.00 °Ftd
- Si-PRO-U-150
    
     
    
    -50.00 °Ctf ... 100.00 °Ctf
- Si-PRO-U-150
    
     
    
    -58.00 °Ftf ... 212.00 °Ftf
- Si-PRO-U-150
    
     
    
    0.00 g/m³ ... 1000.00 g/m³
- Si-PRO-U-150
    
     
    
    0.00 kj/kg ... 15000.00 kj/kg
- Si-PRO-U-150
    
     
    
    0.00 g/kg ... 1000.00 g/kg
 
 ![shadow](/themes/custom/kimo/images/divider-big.png) 

 

 



 



 

 

#### Technical details

- Parameters
    
     
    
    Absolute humidity
    
    Dew point
    
    Enthalpy
    
    Frost point
    
    Mixing Ratio
    
    Relative humidity
    
    Temperature
    
    Wet-bulb temperature
- Wireless connection
    
     
    
    No
 
 ![shadow](/themes/custom/kimo/images/divider-big.png) 

 



 Supplied with   1 adjustment certificate

 

 

 Accessories    [ ![Si-ACC-R2](/sites/default/files/styles/small/public/images/27999_Si-ACC-R2.png.webp?itok=65BtmNc2)

 Si-ACC-R2 connection cable ](/en-INT/measuring-instruments/transmitters/accessories/si-acc-r2-connection-cable)

 

 

 Downloads   #### Documents

[    Transmitters](/sites/default/files/files/EN_54593_Brochures_Transmitters_01-2026_web.pdf)

 





 Compliance