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SLQ-QT500

Measurement of highly viscous liquids with up to 120 ml/min

The SLQ-QT500 features a flow range of up to 120 ml/min for water-based and hydrocarbon-based liquids, such as alcohols, solvents, oil, fuel and adhesives. It is the first choice for measurement of liquids containing particles or with a high viscosity. The SLQ-QT500 in combination with one of the SCC1 sensor cables can be easily integrated into demanding coating systems in the semicon industry, as well as into a wide array of dispensing and liquid flow systems in other industries. The high sensitivity and measuring speed offers new possibilities for the monitoring and control of fast dispensing processes. The sensor is available with calibrations for H2O and isopropanol (IPA). Due to its micro-thermal measurement principle and large inner diameter, the measurement performance of the SLQ-QT500 does not depend on the viscosity itself, and so there is no strict upper or lower viscosity limit (e.g. kinematic viscosities of up to ~1000 mm2/s). It is also ideal for liquids that contain small particles, as long as they do not abrade the quartz glass tube. For wetted parts, only PFA for the fittings and quartz glass for the inner flow channel have been chosen. As with all other Sensirion liquid flow meters, this reliable device has no moving parts and measures through the wall of a straight flow path.
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Specification

Liquid flow
Full scale flow rate (H2O)
120
120ml/min
Accuracy (H2O)
5
5%
Repeatability (H2O)
0.5
0.5%
Full scale flow rate (IPA)
120
120ml/min
Accuracy (IPA)
5
5%
Repeatability (IPA)
0.5
0.5%
Maximum operating pressure
12
12bar
Fluidic connector ports
1/4 tubing
1/4 tubing
Generic
Supply voltage
3.3 - 3.7
3.3 - 3.7V
Average supply current
5.1
5.1mA
Max. supply current
6.5
6.5mA
Interfaces
Analog voltage, Analog current, I²C, RS485
Analog voltage, Analog current, I²C, RS485
Size (LxWxH)
59 x 35 x 29.2
59 x 35 x 29.2mm

Downloads

Datasheet SCC1-USB, SCC1-RS485 sensor cable

10/2023

File

224.3 KB

Datasheet10/2023PDF224.3 KB
Datasheet SLQ-QT500

07/2018

File

529.0 KB

Datasheet07/2018PDF529.0 KB
Chemical resistance

07/2020

File

134.7 KB

Application note07/2020PDF134.7 KB
SSC1-USB-RS485 cable firmware update

File

245.3 KB

Application notePDF245.3 KB
SCC1-RS485 configurator (V. 1.8)

File

2.2 MB

SoftwareMSI2.2 MB
SCC1-RS485 firmware (V. 1.8)

File

166.7 KB

SoftwareHEX166.7 KB
STEP file SLQ-QT500

File

3.6 MB

Drawings/CADSTEP3.6 MB
Datasheet sensor cable SCC1-Analog

10/2017

File

616.1 KB

Datasheet10/2017PDF616.1 KB
Datasheet sensor cable SCC1-Current

10/2017

File

581.4 KB

Datasheet10/2017PDF581.4 KB
Operating guidelines liquid flow meter kits (SLx and LPG10)

09/2020

File

671.7 KB

Application note09/2020PDF671.7 KB
Sensor fluidic ports and tubing connections

01/2024

File

531.4 KB

Application note01/2024PDF531.4 KB
SCC1-Analog configurator

File

3.6 MB

SoftwareMSI3.6 MB
Calibration certification SLQ-QTxx

09/2018

File

87.8 KB

Certificate09/2018PDF87.8 KB
REACH and RoHS declaration Liquid Flow Meters

01/2025

File

102.4 KB

Certificate01/2025PDF102.4 KB

Accessories

NameDescriptionSeriesCategory
SCC1-AnalogAdapter cable for liquid flow sensors, analog voltage output, 2mSCC1Liquid flow
SCC1-CurrentAdapter cable for liquid flow sensors, analog current output, 5mSCC1Liquid flow
SCC1-RS485Adapter cable for liquid flow sensors, RS485 interface, 2mSCC1Liquid flow
SCC1-USBAdapter cable for liquid flow sensors, USB interface, 2mSCC1Liquid flow

SCC1-Analog

Adapter cable for liquid flow sensors, analog voltage output, 2m

SCC1

Liquid flow

SCC1-Current

Adapter cable for liquid flow sensors, analog current output, 5m

SCC1

Liquid flow

SCC1-RS485

Adapter cable for liquid flow sensors, RS485 interface, 2m

SCC1

Liquid flow

SCC1-USB

Adapter cable for liquid flow sensors, USB interface, 2m

SCC1

Liquid flow
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Sensor evaluation

Buy the following products to evaluate this sensor

NameDescriptionSeriesCategory
EK-SLQ-QT500Liquid flow evaluation kit SLQ-QT500EK-SLxLiquid flow

EK-SLQ-QT500

Liquid flow evaluation kit SLQ-QT500

EK-SLx

Liquid flow

Download the respective viewer software to start measuring

Go to download center

Start testing our sensors fast and easy with the evaluation kits

How to get started

Smart sensors for your application

Sensirion's sensor solutions are used in a wide range of applications and markets. Our reliable environmental and flow sensors improve energy efficiency, increase health and ensure safety and comfort.

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