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Chilled water circulate meter

Chilled water flow meter is a flowmeter that can be used to measure low temperature water. Common chilled water flowmeters include electromagnetic circulate meters, turbine circulate meters and ultrasonic move meters. Used in condensing methods, chillers or HVAC. there are a quantity of flow and vitality measurement alternatives in chilled water methods and Apure offers a range of chilled water flow meter technologies which are particularly well fitted to this challenging application. Some considerations for drive expertise selection include installation requirements, accuracy requirements and maintenance implications. Apure’s insertion turbine and insertion electromagnetic flowmeters are easy to install in new or current techniques, provide correct measurements over a extensive range of circulate regulation, and supply years of trouble-free service in closed-loop hydronic methods.
For installations requiring the very best accuracy, such as price allocation, efficiency contracting or sub-metering, in-line electromagnetic flowmeters may be the most effective resolution. But there is not any greatest chilled water flow meter, only probably the most appropriate one. This is because the details of every pipeline software are totally different. According to the actual measurement situation, choose the most appropriate flowmeter. It can save a lot of time and cost.
Depending on the necessities of the chilled water software, other Apure meters could also be extra suitable. Please evaluate the meters beneath or feel free to contact us for an extra conversation.
AYT Digital Liquid Magnetic Flow Meter

Learn More AYT Digital Liquid Magnetic Flow Meter

AFT Split Type Electromagnetic Flow Meter

Learn More AFT Split Type Electromagnetic Flow Meter

ACT Insertion Type Magnetic Flowmeter

Learn More ACT Insertion Type Magnetic Flowmeter

LWGY Liquid Turbine Flow Meter

Learn More LWGY Liquid Turbine Flow Meter

APT Air Vortex Flow Transmitter

Learn More APT Air Vortex Flow Transmitter

TUF Clamp On Ultrasonic Flow Meter

Learn More TUF Clamp On Ultrasonic Flow Meter

FAQ

Where to installation move meter in chilled water?

In order to ensure the correct measurement of chilled water move meter, the installation position and technique should be accurately chosen

Requirements for straight pipe section: it must be installed horizontally on the pipe (the pipe tilt is less than 5). During set up, the flowmeter axis ought to be concentric with the pipe axis and move direction should be consistent. ไดอะแฟรม ซีล of the upstream pipe must be no much less than 2D straight pipe section. If the set up site permits, it is recommended that the upstream straight pipe section be 20D and the downstream pipe part be 5D.
Requirements for piping: The inner diameter of the upstream and downstream piping of the set up point is similar as that of the flowmeter.
Requirements on by-pass pipe: In order to ensure that the upkeep of the flowmeter does not affect the normal use of the medium, the cut-off valve (cut-off valve) must be installed on the front and rear pipes of the turbine flowmeter, and the by-pass pipe should be set on the same time. Flow control valve to be installed in the downstream of the flow meter, the upstream installed cut-off valve have to be absolutely open when in use, to avoid the upstream a half of the fluid produced unstable move phenomenon.
The necessities of the external environment: it’s best to put in within the indoor, have to be put in within the outside, must use sunscreen, rain. Lightning safety measures, so as not to affect service life.
Requirements for impurities within the medium: In order to ensure the service lifetime of the flowmeter, the filter must be installed in front of the straight pipe section of the flowmeter.
Installation website: The flowmeter should be installed in a spot that is straightforward to maintain and free from robust electromagnetic interference and thermal radiation.
What are the constraints of electromagnetic flowmeter at low temperature?

The low-temperature resistance of the data.
The electrical insulation of the electromagnetic flowmeter transmitter.
Can ultrasonic move meters measure chilled water flow?

Ultrasonic flowmeter can measure the move price. The temperature mustn’t exceed -40℃~160℃. Requires an entire check tube and uniform medium. It can display instantaneous move rate, circulate fee, cumulative circulate rate and cumulative working time.
Ultrasonic calorimeter can measure warmth provide, move price and temperature monitoring. Air conditioning heating and cooling capacity measurement.
How to measure the chilled water flow fee of a chiller??

The following is our experience sharing: chiller chilled water circulate measurement approach. We hope it will be useful to you.
1. Chiller into and out of the water stress detection of water pipes

By detecting the return water strain and outlet water stress values. Check the water move fee of the chiller underneath the inlet and outlet water pressure distinction within the random handbook of the chiller.
Refer to the corresponding unit water circulate price desk or chart within the manual. Thus, determine whether the refrigeration system is normal or not.
And by this distinction to find out which section of the transmission pipe resistance worth is larger. And develop the corresponding rectification plan and motion.
2. Test the fridge return water temperature and water temperature (the unit must be in regular condition)

After 30 minutes of energy on, check the system or chilled water system inlet and outlet thermometer through the unit control system parameters.
The inlet water temperature and outlet water temperature can be learn when the unit is running. The difference have to be about 4-6 levels.
If the difference between the inlet and outlet water temperatures is simply too massive, the water system is flowing too little water through the plates. This could trigger the equipment to fail to function properly or be broken.
3. Pump working present detection

By detecting the operating current of the refrigerator water pump, and the rated present for comparability. You can determine whether the precise water flow is larger than or less than the rated water circulate of the pump.
Combined with the earlier parameters complete judgment. In order to get an accurate chiller system test and analysis report.
four. Compressor copper tube suction temperature detection (only when the refrigeration operation)

If the fridge and freezer is turned on after 30 minutes

The compressor suction temperature is detected to be lower than 0 levels. It means that the water circulate within the water facet warmth exchanger is not sufficient, which causes the evaporation temperature and evaporation stress to drop.
and causes Freon to nonetheless evaporate and absorb heat from the suction tube flowing from the evaporator to the compressor. It will lead to the compressor suction temperature beneath zero degrees.
In addition, it is essential to remove the drop of evaporating strain and evaporating temperature caused by low water temperature setting value.
Non-standard low water temperature unit could be considered regular so lengthy as the compressor suction superheat diploma is 6-8 degrees Celsius.
So beneath the conventional water circulate. The compressor suction temperature is mostly larger than 0℃. Below this value, the water system problem must be excluded.
Extended studying:
Solvent circulate meter

Sewage flowmeter

Oil and fuel circulate meter

Relation between move and pressuree
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Chilled water flow meter is a flowmeter that can be used to measure low temperature water. Common chilled water flowmeters embody electromagnetic flow meters, turbine circulate meters and ultrasonic circulate meters. Used in condensing systems, chillers or HVAC. there are multiple circulate and vitality measurement alternatives in chilled water systems and Apure offers a variety of chilled water circulate meter applied sciences that are notably well suited to this challenging application. Some considerations for drive technology selection embrace installation necessities, accuracy requirements and maintenance implications. Apure’s insertion turbine and insertion electromagnetic flowmeters are straightforward to install in new or current techniques, provide accurate measurements over a variety of circulate regulation, and provide years of trouble-free service in closed-loop hydronic techniques.
For installations requiring the best accuracy, such as cost allocation, performance contracting or sub-metering, in-line electromagnetic flowmeters may be the best solution. But there is not any greatest chilled water circulate meter, solely essentially the most appropriate one. This is as a end result of the details of each pipeline software are completely different. According to the actual measurement state of affairs, select probably the most suitable flowmeter. It can save lots of time and price.
Depending on the requirements of the chilled water application, different Apure meters may be extra suitable. Please review the meters below or feel free to contact us for a further conversation.
AYT Digital Liquid Magnetic Flow Meter

Learn More AYT Digital Liquid Magnetic Flow Meter

AFT Split Type Electromagnetic Flow Meter

Learn More AFT Split Type Electromagnetic Flow Meter

ACT Insertion Type Magnetic Flowmeter

Learn More ACT Insertion Type Magnetic Flowmeter

LWGY Liquid Turbine Flow Meter

Learn More LWGY Liquid Turbine Flow Meter

APT Air Vortex Flow Transmitter

Learn More APT Air Vortex Flow Transmitter

TUF Clamp On Ultrasonic Flow Meter

Learn More TUF Clamp On Ultrasonic Flow Meter

FAQ

Where to set up move meter in chilled water?

In order to make sure the accurate measurement of chilled water circulate meter, the installation position and method must be accurately chosen

Requirements for straight pipe part: it must be installed horizontally on the pipe (the pipe tilt is lower than 5). During set up, the flowmeter axis must be concentric with the pipe axis and move direction ought to be consistent. The length of the upstream pipe must be at least 2D straight pipe part. If the set up website permits, it is suggested that the upstream straight pipe part be 20D and the downstream pipe section be 5D.
Requirements for piping: The inside diameter of the upstream and downstream piping of the set up point is identical as that of the flowmeter.
Requirements on by-pass pipe: In order to ensure that the upkeep of the flowmeter does not affect the conventional use of the medium, the cut-off valve (cut-off valve) should be put in on the front and rear pipes of the turbine flowmeter, and the by-pass pipe ought to be set on the same time. Flow control valve to be put in in the downstream of the flow meter, the upstream put in cut-off valve must be absolutely open when in use, to keep away from the upstream a half of the fluid produced unstable move phenomenon.
The requirements of the external surroundings: it’s best to put in in the indoor, must be put in in the outside, must use sunscreen, rain. Lightning protection measures, in order not to have an effect on service life.
Requirements for impurities in the medium: In order to ensure the service life of the flowmeter, the filter ought to be put in in entrance of the straight pipe section of the flowmeter.
Installation web site: The flowmeter should be put in in a spot that is straightforward to take care of and free from sturdy electromagnetic interference and thermal radiation.
What are the constraints of electromagnetic flowmeter at low temperature?

The low-temperature resistance of the information.
The electrical insulation of the electromagnetic flowmeter transmitter.
Can ultrasonic flow meters measure chilled water flow?

Ultrasonic flowmeter can measure the move price. The temperature shouldn’t exceed -40℃~160℃. Requires a whole check tube and uniform medium. It can display instantaneous flow price, move rate, cumulative flow fee and cumulative running time.
Ultrasonic calorimeter can measure heat provide, circulate price and temperature monitoring. Air conditioning heating and cooling capability measurement.
How to measure the chilled water flow fee of a chiller??

The following is our experience sharing: chiller chilled water move measurement method. We hope it is going to be useful to you.
1. Chiller into and out of the water pressure detection of water pipes

By detecting the return water strain and outlet water stress values. Check the water flow fee of the chiller beneath the inlet and outlet water pressure difference within the random guide of the chiller.
Refer to the corresponding unit water flow fee desk or chart in the guide. Thus, determine whether the refrigeration system is normal or not.
And by this difference to find out which section of the transmission pipe resistance worth is greater. And develop the corresponding rectification plan and motion.
2. Test the fridge return water temperature and water temperature (the unit needs to be in normal condition)

After half-hour of power on, check the system or chilled water system inlet and outlet thermometer by way of the unit management system parameters.
The inlet water temperature and outlet water temperature can be learn when the unit is running. The distinction must be about 4-6 levels.
If the difference between the inlet and outlet water temperatures is simply too massive, the water system is flowing too little water through the plates. This could cause the equipment to fail to operate properly or be broken.
3. Pump operating current detection

By detecting the operating present of the refrigerator water pump, and the rated present for comparability. You can determine whether or not the actual water circulate is greater than or less than the rated water circulate of the pump.
Combined with the earlier parameters complete judgment. In order to get an correct chiller system take a look at and analysis report.
four. pressure gauge (only when the refrigeration operation)

If the refrigerator and freezer is turned on after half-hour

The compressor suction temperature is detected to be lower than 0 levels. It implies that the water circulate within the water aspect heat exchanger just isn’t sufficient, which causes the evaporation temperature and evaporation pressure to drop.
and causes Freon to nonetheless evaporate and take in heat from the suction tube flowing from the evaporator to the compressor. It will lead to the compressor suction temperature below zero levels.
In addition, it is necessary to get rid of the drop of evaporating pressure and evaporating temperature caused by low water temperature setting value.
Non-standard low water temperature unit can be thought of regular so long as the compressor suction superheat degree is 6-8 levels Celsius.
So under the traditional water flow. The compressor suction temperature is generally greater than 0℃. Below this value, the water system problem needs to be excluded.
Extended studying:
Solvent move meter

Sewage flowmeter

Oil and fuel move meter

Relation between move and pressuree