The flow meters work in accordance with the same displacement principle as the VS, and measure viscous media as an inline device. The pulse frequency is proportional to the speed of the measuring unit wheels driven by the volumetric flow. The pulse evaluation is carried out using VSE evaluation electronics or any other evaluation device. The flow meters are ideal for low pressure hydraulics, lubrication systems, spray coatings, and with the high temperature option, also for hotmelt. Based on the same meshing gear principle as the VSE series VSI and VHM, the VSE EF ecoflow sensor measures viscous media, however as in-line-device.

Optional:

LCD flow display with analogue output and two limit values, mounted on the flow meter. The impulse frequency is proportional to the revolutions of the gear wheels, which are driven by the volume stream.

The impulse processing is made by means of VSE made or any other electronical readout. The VSE EF ecoflow is a economical alternative to the VSI series for applications that require lower accuracy, temperature and pressure.

Features

Flow range 0.05 to 150 l/min
Pressure range up to 200 bar
Temperature range 0 to 80°C
Frequency range up to 1666.7 Hz
Viscosity range 1 to 10,000 cSt

Advantages

Good reproducibility with sufficient linearity
Simple dosing tasks
Basis of many OEM applications and individual custom solutions

Applications

Oils
Lubrication systems
Printing inks
Hotmelt

Specifications

	EF 0.04	EF 0.1	EF 0.4	EF 2	EF 4
Flow range l/min	0.05 … 4	0.1 … 10	0.2 … 30	0.5 … 70	3.0 … 150
Flow volume cm3/pulse	0.04	0.1	0.4	2.0	4.0
Frequency (Hz)	20.8 …1,666.7	16.7 … 1,666.7	8.3 … 1,250.0	4.2 … 583.3	12.5 … 625.0
K-Factor (pulse/l)	appr. 25,000	appr. 10,000	appr. 2,500	appr. 500	appr. 250
Accuracy at 21 mm2/s	2 %	2 %	2 %	2 %	3 %
Viscosity range mm2/s	2 … 2,000	2 … 2,000	2 … 5,000	2 … 7,000	2 … 10,000
Max. operating pressure	200 bar (2900 psi)
Medium temperature	0°C … +80°C (32°F … 176°F)
Mounting Position	Unrestricted
Filtering	20 µm	20 µm	50 µm	50 µm	100 µm
Side Pipe Connection	G 1/4”	G 3/8”	G 1/2”	G 3/4”	G 1”
Weight	0.62 kg	0.70 kg	1.5 kg	1.7 kg	5.24 kg