Kobold PEL-L Turbine Wheel-Low Volume

  

 

 

The sensor principle based on a Pelton water wheel is remarkable for its high reliability – proven over more than ten years of service. This flowmeter is to be found in applications in a variety of plants, where they are mainly used for measuring of negligible volumetric flow rates of media such as fuels, distilled water, or hot greases. The sensors satisfy almost all industrial requirements with temperature limits of 135 °C and nominal pressures up to 345 bar (higher pressures upon request). Only V4A Supra stainless steel (material no. 1.4571) is used for metallic parts. Swiss precision sapphire bearings ensure long service life and reliability.

Measuring range: 0,004 - 0,06 l/min ... 0.1 - 28 l/min water
Connection: R ¼, R ½, hose connector
Material: stainless steel, aluminium
Pressure range: 5 ... 345 bar
t_max: 70°C (135°C)
Accuracy: ±2 % of full scale
Pulse output

Model PEL-L... for low flow rates

• Linearity: ±2% of reading
• Repeatability: < ±0.2% at 90% of range
• Accuracy:
  ±2% of actual reading for 10-100% of range
  ±0.5% FSD for 0-10% of range
• Measuring range: 100:1 up to 280:1
  

Function Principle
The model PEL flowmeter works on the turbine wheel principle. The heart of this device is a Pelton turbine supported by sapphire bearings. The Pelton turbine is an impeller with ferrite inserts embedded in the blade tips. When this turbine is brought into rotary motion, the motion is recorded by a coil mounted nearby; the resulting electrical impulses are passed to a control unit for further processing.

Model KOBOLD PEL-L flowmeters measure the entire volumetric flow that passes through the instrument. A nozzle guides the flow to the impeller. The resulting turbine rotation is proportional to the flow rate.

A small sensing coil signals the approach of the ferrite inserts contained in the impeller. An output signal with constant current is then produced by the electronics.

Other critical media such as toluene and vinyl chloride can be measured in hazardous environments. Sensors made of less expensive materials are used for less sophisticated conditions.

Specifications

Technical Details

Standard pulse output (Code F)

• Power supply: 8-28 VDC
• Signal: NPN

Model	Version
	...LMX...	...S34...
PEL-L00L... PEL-L000... PEL-L001... PEL-L005... PEL-L024... PEL-L045... PEL-L090... PEL-L220...
Process connection	R½ male thread	R¼ female thread
Housing	VA	VA
Electronic housing	VA/Alu	VA/Alu
Turbine ring	VA	VA
Rotating vane	PFA	PFA
Rotating vane bearings	Sapphire	Sapphire
Rotating vane axle	VA/Sapphire	VA/Sapphire
O-ring	PTFE	FPM
pmax	100 bar (L000 & L001:30 bar)	345 bar
tmax	100°C	135°C

Download Datasheet: Kobold PEL-L Turbine Wheel-Low Volume

Reference : kobold.com