Sensirion Onepager - Chemical dosing and dispensing
Precise control and validation of dosing
Chemical dispensing applications such as car wash systems or soap dispensing are processes requiring precise dosing of chemicals to ensure the best process performance. This is especially important when using expensive chemicals. The procedure requires choosing the proper controls that are compatible with the chemistry while providing the accuracy and repeatability necessary for the process. There are many challenges associated with the chemicals being dosed, such as potential air bubbles and viscosity.
Dosing the right amount of chemical in solutions/mixtures
Handling of highly concentrated chemicals
Detecting bubbles and empty bottles/bags (reduced maintenance)
Precise flow measurement
Compatible with highly viscous liquids
Air in line and bubble detection flag
Sensirion sensor solution
SLF3S-4000B: Flow rates up to 600 ml/min
Additional sensor features
Media recognition (at stop flow conditions)
Liquid temperature sensing and temperature compensation
Calibrated digital output
Chemically robust material
Mass Air-Flow applications
Coolant monitoring in CNC machines
Commercial cleaning and laundry systems
- Which fittings are available?
Barbed connectors for 6mm tubing (inner diameter)
- Which communication interfaces are available?
I²C protocol or RS485 with proprietary SHDLC – Sensirion High-Level Data Link Control is a Byte-oriented master-slave communication protocol based on ISO HDLC.
-Do I need to periodically calibrate the liquid flow sensor?
A correction factor for the different chemicals must be obtained.
- At which pressure range can the SLF3S-4000B operate?
up to 3bar
- Which are the wetted materials?
PPS (Poly-Phenylene Sulfide), stainless steel, epoxy
- Is the SLF3x compliant with high (or low) pH liquids?