[![compo Si-C320](/sites/default/files/styles/product_image/public/images/COMPO-C320-3_1.png?itok=-kGQn1gN)](https://www.kimo-instruments.com/sites/default/files/styles/max_1300x1300/public/images/COMPO-C320-3_1.png?itok=VeQfNUiI) [![Si-C320](/sites/default/files/styles/thumbnail/public/images/Si-C320-GAUCHE_1.png?itok=aHvMqln1)](https://www.kimo-instruments.com/sites/default/files/styles/max_1300x1300/public/images/Si-C320-GAUCHE_1.png?itok=3PrmaYW_) [![Si-C320](/sites/default/files/styles/thumbnail/public/images/Si-C320-FACE_1.png?itok=r4veQOw0)](https://www.kimo-instruments.com/sites/default/files/styles/max_1300x1300/public/images/Si-C320-FACE_1.png?itok=k_7Tj0Ue) [![si-c320 clean room](/sites/default/files/styles/thumbnail/public/images/Si-C320%20_cleanroom.jpg?itok=eCVsWG5-)](https://www.kimo-instruments.com/sites/default/files/styles/max_1300x1300/public/images/Si-C320%20_cleanroom.jpg?itok=u0zOKiHo) [![Si-C320 industry](/sites/default/files/styles/thumbnail/public/images/Si-C320%20_industry_1.jpg?itok=Mve3o5jt)](https://www.kimo-instruments.com/sites/default/files/styles/max_1300x1300/public/images/Si-C320%20_industry_1.jpg?itok=eYfX5NHF) [![Si-C320 labo](/sites/default/files/styles/thumbnail/public/images/Si-C320%20_laboratory_02_Left_1.jpg?itok=vumIicWv)](https://www.kimo-instruments.com/sites/default/files/styles/max_1300x1300/public/images/Si-C320%20_laboratory_02_Left_1.jpg?itok=OWDWvnpH) [![Si-C320 labo](/sites/default/files/styles/thumbnail/public/images/Si-C320%20_laboratory_03_Left_1.jpg?itok=qcA0A4kK)](https://www.kimo-instruments.com/sites/default/files/styles/max_1300x1300/public/images/Si-C320%20_laboratory_03_Left_1.jpg?itok=qAwR6VoX) [![Si-C320 operating room](/sites/default/files/styles/thumbnail/public/images/Si-C320%20_operating%20room_Left_1.jpg?itok=s0NWc8St)](https://www.kimo-instruments.com/sites/default/files/styles/max_1300x1300/public/images/Si-C320%20_operating%20room_Left_1.jpg?itok=75IjQN_0) [![Si-C320 cosmetics](/sites/default/files/styles/thumbnail/public/images/Si-C320_cosmetics_1.jpg?itok=CXZU8h8F)](https://www.kimo-instruments.com/sites/default/files/styles/max_1300x1300/public/images/Si-C320_cosmetics_1.jpg?itok=vOxAxWWZ) For clean rooms, regulated environments and industrial VAC applications where a perfect regulation/monitoring of the air parameters is needed, our Si-C320 transmitters provide reliable measurements and allow you to achieve compliance with the strictest regulations. The Si-C320 housing is waterproof, rugged and resistant to vaporised hydrogen peroxide (VHP). It also features a colour touch screen for comprehensive viewing and advanced control of measurement parameters. In addition, measurements can be recorded and downloaded via the Sauermann Control application/software. [See all available models](https://sauermanngroup.com/sites/default/files/2024-03/Transmitters-Selection-Guide_2024-03_EN_0.pdf) [ Technical Data sheet ](https://www.kimo-instruments.com/sites/default/files/files/DS_Si-C320_EN_24-01-25_0_0.pdf) [ User manual ](https://www.kimo-instruments.com/sites/default/files/files/UM_Si-C320_EN_23-02-26_2.pdf) [ Simplified manual ](https://www.kimo-instruments.com/sites/default/files/files/QSG_Si-C320_23-02-26_38.pdf) Multifunction for VAC and IAQ applications 2 x inputs for external probes 4 x analogue outputs 1 x RS485 interface for ModBus RTU protocol Outputs diagnostic Possibility to edit the channel names Product info #### Measure details - Units ACH, inH₂O, ppb, °Ctf, °F, °Ftf, °C, % RH, °Ctw, °Ctd, °Ftd, °Ftw, Pa, ppm, g/m³, g/kg, kj/kg, m/s, m³/h, cfm - Alarm Buzzer (60 dB at 10 cm) ![shadow](/themes/custom/kimo/images/divider-big.png) #### Technical details - Parameters Absolute humidity Air Change Rate Air velocity Airflow Atmospheric pressure CO VOC CO₂ Dew point Differential pressure Enthalpy Frost point Mixing Ratio Relative humidity Temperature Wet-bulb temperature - Displays Graphic touch display - IP Protection IP 66, VHP resistant (Vaporized hydrogen peroxide) - Standards 2015/863 EU (RoHS 3) UKCA 2012/19/UE DEEE 2014/30/EU EMC 2014/35/EU Low Voltage 2014/53/UE RED - Bluetooth 1 - Power supply 24 VAC / VDC ±10% - Outputs 4 x 4-20 mA, 0-20 mA, 0-10 V and 0-5 V analogue outputs - Ethernet communication No - ModBus network Yes ![shadow](/themes/custom/kimo/images/divider-big.png) #### Instrument Dimensions - Length 6 7/32 inches 158.25 mm - Width 3 1/32 inches 76.65 mm - Height 5 11/32 inches 135.8 mm - Weight 1 13/32 pounds 626 g ![shadow](/themes/custom/kimo/images/divider-big.png) #### Operating temperature - Min -10.00 °C 14.00 °F - Max 50.00 °C 122.00 °F ![shadow](/themes/custom/kimo/images/divider-big.png) #### Storage temperature - Min -10.00 °C 14.00 °F - Max 70.00 °C 158.00 °F ![shadow](/themes/custom/kimo/images/divider-big.png) Supplied with 1 Si-C320 Multifunction transmitter 4 analogue outputs 1 RS485 interface with ModBus RTU protocol Inputs for 2 x probes 1 slot for optional differential pressure module 1 slot for optional relay module 1 slot for optional wireless communication module Terminal blocks for power connection Terminal blocks for output connections Wall-mount fixing plate 1 adjusting certificate Probes [ ![Si-PRO-DP](/sites/default/files/styles/small/public/images/Si-PRO-DP-250_Si-PRO-DP-50_2.png.webp?itok=n36FY0nm) Differential pressure modules](/en-AU/measuring-instruments/transmitters/probes/differential-pressure-modules) [ ![Si-PRO-T-150](/sites/default/files/styles/small/public/images/SI-PRO-T-150.jpg.webp?itok=BVK4APoh) Temperature probe](/en-AU/measuring-instruments/transmitters/probes/temperature-probe) [ ![Si-PRO-V-300](/sites/default/files/styles/small/public/images/SI-PRO-V-300.png.webp?itok=1i-1xgTi) Air velocity hotwire probe](/en-AU/measuring-instruments/transmitters/probes/air-velocity-hotwire-probe) [ ![compo hygro probes](/sites/default/files/styles/small/public/images/compo%20sondes%20hygro.png.webp?itok=XK_AFQxn) Hygrometry probes](/en-AU/measuring-instruments/transmitters/probes/hygrometry-probes-0) [ ![Si-PRO-U-I-100-H](/sites/default/files/styles/small/public/images/27986_Si-PRO-U-I-100-H_Web.png.webp?itok=2YgoV1n1) Heated humidity probe](/en-AU/measuring-instruments/transmitters/probes/heated-humidity-probe) [ ![Si-PRO-CO-CO2-COV](/sites/default/files/styles/small/public/images/SI-PRO-CO-CO2-COV-DROITE.png.webp?itok=r1cjW9P1) IAQ probes](/en-AU/measuring-instruments/transmitters/probes/iaq-probes) [ ![pitot-L](/sites/default/files/styles/small/public/images/pitot-L_0.jpg.webp?itok=silkKa7Z) Pitot tubes Type L](/en-AU/measuring-instruments/transmitters/probes/pitot-tubes-type-l) [ ![pitot-S](/sites/default/files/styles/small/public/images/pitot-S_1.jpg.webp?itok=tRUzlV7u) Pitot tubes Type S](/en-AU/measuring-instruments/transmitters/probes/pitot-tubes-type-s) [ ![debimo](/sites/default/files/styles/small/public/images/debimo_0.jpg.webp?itok=Wa0Fd5_C) DEBIMO](/en-AU/measuring-instruments/transmitters/probes/debimo) Accessories [ ![Si-ACC-WLM](/sites/default/files/styles/small/public/images/Si-ACC-WLM.jpg.webp?itok=odWSr6B3) Wireless communication module ](/en-AU/measuring-instruments/transmitters/accessories/wireless-communication-module) [ ![Si-M4R](/sites/default/files/styles/small/public/images/Si-M4R.png.webp?itok=Pm0J7N8H) 4x relay module ](/en-AU/measuring-instruments/transmitters/accessories/4x-relay-module) [ ![Raccords de pression](/sites/default/files/styles/small/public/images/accessories%20hygrometry%20transmitters_1.png.webp?itok=0nkY2dZ3) Transmitters and probes accessories ](/en-AU/measuring-instruments/transmitters/accessories/transmitters-and-probes-accessories) Software [ ![sauermann-control-app](/sites/default/files/styles/small/public/images/APPLI-MOBILE-IPHONE_Conf.png.webp?itok=dIAGwgyh) Sauermann Control mobile App](/en-AU/measuring-instruments/transmitters/software/sauermann-control-mobile-app) [ ![Sauermann control laptop](/sites/default/files/styles/small/public/images/PC_portable.png.webp?itok=7pWRMv9f) Sauermann Control software](/en-AU/measuring-instruments/transmitters/software/sauermann-control-software) Videos [![](/sites/default/files/styles/video_ct_thumbnail/public/video_thumbnails/1Ru7fXCbqWg.jpg.webp?itok=pbQXvkKJ)](/en-AU/videos/class-320-multifunction-transmitters) ## [Class 320 multifunction transmitters](/en-AU/videos/class-320-multifunction-transmitters) Downloads #### Documents [ Transmitters](/sites/default/files/files/EN_54593_Brochures_Transmitters_01-2026_web_0.pdf) [ Smart Building and Comfort](/sites/default/files/files/EN_Smart%20Building%20and%20Comfort_11-2024-Sauer_Web_4.pdf) [ Clean Rooms and Regulated Environments](/sites/default/files/files/8_EN_Cleanrooms%20and%20regulated%20environments-12-2025_1.pdf) [ Air Conditionning and Ventilation](/sites/default/files/files/7_EN_Air%20conditioning%20and%20ventilation-12-2025_1.pdf) [ 3D File ](https://www.kimo-instruments.com/sites/default/files/files/Si-C320_3D_6.zip) Compliance