Beverage Flow Meters: Installation Notes
- Suitable for many liquids including water, beer and soft drinks
- Connections 3/8” “push on
- Reliable and accurate
- Supplied with 10m cable.
- Flow range from 0.6 to 10 L/Min.
Beverage Meter Technical specification
Accuracy Flow range
L/Min: 0·5 – 10 Linearity: ±0.75% FSD
L/Min: 1.0 – 10 Linearity: ±2.5% Actual
Temp range: 0 to +100 °C
Sensor to sensor: ±3%
Supply voltage: 4.5 to 24 V d.c.
Current: 10 mA (typical)
Output: Open collector (NPN)
Output low: 100mV max
Rise & fall times: 2uS max
Wetted materials: PVDF, sapphire & VitonTM. Ceramic magnet
‘K’ Factor: 1420 approximately
Max Frequency: 235 Hz.
Pressure drop at full flow: 750 mBar
800 Series Displaying Turbine Flow Meter: Installation
The user must ensure that the materials of construction are compatible with their fluid. We accept no responsibility for material compatibility; it is the users’ responsibility.
A pull-up resistor must be used. For best accuracy install with the cable outlet horizontal.
The ‘300-010 Beverage Meter’ Produces pulse output the total of which is proportional to the total flow through the device. These flowmeters are designed specifically for the drinks dispense industries including beer, wines and spirits (excluding juice extracts). They give high performance and competitive pricing. They have totally non-metallic wetted components which makes them the ideal choice for the metering of food based products and even ultrapure water. The standard inlet tubes are 3/8” push on pipe connectors. The bearings are made of sapphire for long life and reliability.
It is recommended that all “signal” cables are screened and run separately to power lines and switched inductive loads and is located well away from inverters and other “noisy” apparatus. Always use sound wiring practice. The Hall Effect detector (NPN) requires an external pull-up resistor connected between the output and a suitable power supply to attain a pulse. This may differ from the PSU voltage.
The pipe work must be designed in such a way to eliminate reverse flow as the meter is bi-directional. It should be installed in a position that prevents it from draining down as on start-up serious damage could result by “impacting” an empty flowmeter with a high velocity fluid stream or over-speeding the turbine with air in the line. The fluid should be clean and homogenous. In all cases an upstream filter of at least 80 microns must be fitted. It is recommended that before the flowmeter is installed in the line a “dummy” section of pipe is inserted and the system flushed. This is to eliminate any debris in that section of the line. The pipe must not stress the body of the meter and should be fully supported either side with appropriate isolation valves and in some cases a by-pass valve. On initial start-up increase the flow slowly to ensure no over speeding of the meter occurs as the air is forced from the line. This is best achieved by monitoring the flow rate and ensuring that a 50% over-range is not exceeded. Never blow a flowmeter with an airline. Care should be taken to ensure that no air enters the system (e.g. leaky pump gland) or that no cavitation takes place. With a volatile liquid we recommend at least twice the vapour pressure plus 1 Bar as the operating pressure. Carbonated fluids should have the highest possible back pressure to prevent gas beak-out. The user must ensure that the materials of construction are compatible with their fluid. We accept no responsibility for material compatibility; it is the users’ responsibility.