Sensor evaluation

Start testing Sensirion’s sensors fast and easy with our evaluation kits.

Get started

Not sure which evaluation kit components you need?

Go to our product catalog and search the sensor you want to evaluate. On the sensor detail page you can find the list with all the necessary evaluation kit components.

1. Choose your evaluation kit

2. Download software

Please use the ControlCenter for the SLF3x and the LD20 sensors. For the other sensors, use the Viewer software. All other relevant downloads you find directly on the evaluation kit and product detail pages.

Viewer software USB/RS485 (V. 2.91)
1.7 MB
SEK-ControlCenter (all devices)
SCC1-RS485 configurator (V. 1.8)
2.2 MB
Quick start guide liquid flow meter kit
444.3 KB

Useful information

  • The sensor relies on a thermal measurement principle. Therefore it is sensitive to the thermodynamic properties of the fluid. For details see "CMOSens® for Liquid Flow Meters".
  • Sensirion Liquid Flow Meters are 100% factory calibrated, typically for H2O and/or IPA. However, your Liquid Flow Meter can be used to measure other fluids as well by choosing the calibration field most closely matching your fluid. Contact Sensirion if you want to use much different fluids in terms of thermal properties.
  • Please see your data sheet for the specific pin-out of your sensor type.
  • There are additional operating guidelines and application notes available which will be send to you on request (e.g. on I2C, installation guidelines, ...).
  • Select „Liquid Flow Sensor (SF06 Chip)“ for the LD20 series and select „Liquid Flow Sensor (SF04 Chip)“ for all others.
  • When choosing the COM Port Settings to start the Sensirion Viewer Software select a COM port so that “USB Serial Port” appears next to your COM port setting. It is a PC dependent setting and no general one.
  • Avoid strong mechanical shocks that could dislodge internal components or compromise the fluid seals.
  • The maximum flow ranges of the sensor are specified such to achieve a laminar flow at the position of the micro thermal chip. Use tubing and fluidic connection material with at least the same inner diameter as the one of the capillary.
  • Start testing the sensor horizontally mounted. This is the orientation it has been calibrated in. 
  • After ending your measurements, make sure to always store the sensor's flow channel clean and dry in order to maintain a high level of performance. This avoids the growth of a biofilm or other deposits which will impact the sensor's reading the next time. To do so, always drain the fluid, flush with cleaning agent (deionized water first, then acetone, and finally IPA) and blow out with air or allow to air dry. Do not use acetone for cleaning the sensors of the LD20 series. Its wetted materials are not compatible with acetone.
  • In case you encounter a drifting behavior of the sensor, it might be due to deposits inside the capillary. Flush the sensor with acetone or IPA (maybe several times) or try storing it overnight with the sensor's flow channel filled with acetone. You can even run bleach to remove very sticky biofilms. Never mechanically clean the sensor's fluidic channel.

Related sensors

Need help?

If you have difficulty with evaluating your sensor, we would love to know