Viscosity sensor VLO-M1 for liquids
The measuring system, which is sub-millimeter in size, enables the sensor to be compactly built. It is only 80 x 30 x 15 mm³ in size and can therefore be accommodated even in tight spaces. The measured values are transmitted to the higher-level system via an RS232 interface and the ASCII command protocol in the TrueDyne Sensors standard.
Monitoring of fuel concentrations
New cars must be put through their paces before they are registered. The engine is tested at its limits and often started “cold”. As a result, the fuel no longer burns completely and it mixes with the engine oil. Too much fuel in the engine oil can destroy the engine. With the viscosity sensor, tests no longer have to be interrupted – you can monitor the viscosity of the oil directly in the process and replace it if necessary.
General
Measured variable:
Viscosity, Density and several metries derived from them (e.g. standard density, concentration, etc.)
Permitted media:
Particel free (<30 μm) hydrocarbons like for eg.
- petrol E5 / E10 / E85
- diesel B7 / B10 / XTL
- Jet-A1 (also F-35 or JP-8)
- M100 (methanol)
- isopropanol
- OME* (synthetic fuel)
- LPG*
Aqueous media like for eg.
- AdBlue®*
- Glycole mixtures*
If necessary, media that deviate from the listed may be used, after individual clarification. *Optional
Performance
Viscosity: ±[0.2 mPa s + 5% of measured value]
Density: ±[0.2 or 0.01 x abs (T-25 °C)] kg/m³ if the value is >0.2
Temperature: ±0.15 or. ±[0.0075 x abs(T-25 °C)] °C if the value is >0.15
Repeatability
Viscosity: ±0.1 mPa s
Density: ±0.1 kg/m³
Temperature: ±0.05 °C
Temperature conditions
-20…+60 °C
Permitted ambient temperature:
-20…+60 °C
Permitted storage temperature:
-20…+60 °C
Range of application
0,3…50 mPa s
Permitted density measurement range:
600…1000 kg/m³ (Option 0…1200 kg/m³)
Permitted process pressure range:
0…20 bar (absolute)
Bursting pressure 80 bar (absolute)
Permitted particle size:
Max. 30 μm
Permitted flow range:
0…10 l/h (water)
Vibrations:
Due to the high operating frequency of the micro channel, vibrations (<20 kHz) do not affect the measuring accuracy.
Inlet and outlet runs:
Inlet and outlet runs do not affect the measuring accuracy.
Ambient conditions
IEC/EN 60068-2-1
IEC/EN 60068-2-2
IEC/EN 60068-2-30
Elektromagnetische Verträglichkeit:
EMV 2014/30/EU (EN 61326-1)
Schwingungs – und Stossfestigkeit:
IEC/EN 60068-2-6
IEC/EN 60068-2-27
IEC/EN 60068-2-64
Material
Stainless steel:
- 1.4404 (316L)
- 1.4542 (AISI/SUS 630)
Medium wetted material:
Stainless steel:
- 1.4542 (AISI/SUS 630)
BOROFLOAT® 33 glass
Silicon
Epoxy resin
Dimensions / design
Dimensions:
30 mm x 66 mm x 15 mm (without cable and cable bushing)
Weight:
<150 g
Dimensions measuring channel:
160 x 200 μm (500 nl)
Housing protection:
IPx4, IPx5, IPx6, IPx7 (IEC 60529)
Fluidic interfaces
2 x M5 threaded holes with an angle of 45° to the side and the front surface
Electrical interfaces
Fixed installed cable
Cable length:
3 m
Outer diameter of cable:
2.3 mm
Diameter of cores:
4 x AWG 28
Lead of gage:
Digital communication line and power supply in a common shielded cable
Communication:
Continuous, without the need for a command from the outside
Hardware Standard RS232 Proprietary ASCII output string
Power supply:
Power connection DC 5 to 12 V (max. 400 mW) via power unit with safety extra low voltage (SELV) or protective extra low voltage (PELV)
Voltage strength
The maximum permissible fault voltage between GND (signal ground) and earth must not exceed 36 Vpeek.
Data rate:
10 Saps
(Option acyclique with 100 ms response time)
Cable occupation:
white: VDD (supply voltage)
brown: GND (signal ground)
green: RX (input)
yellow: TX (output)
Note: The cable assignment corresponds to the view of the sensor (VLO-M1)
Certificates and approvals
The density sensor meets the legal requirements of the EC Directives. TrueDyne Sensors AG confirms that the density sensor has been successfully tested by applying the CE mark.
RoHS:
All installed components meet the requirements of the RoHS directive.
Electromagnetic compatibility:
EMC 2014/30 / EU (EN 61326-1)
Product design
Product Design: VLO-M1
- Housing
- Electronic interface for communication and power supply
- Drill holes for mechanical mounting (6 x M3 threaded holes)
- Fluidic interface (2 x M5 threaded holes)
Mechanical mounting: VLO-M1
Fluidic installation: VLO-M1