Chilled water flow meter is a flowmeter that can be utilized to measure low temperature water. Common chilled water flowmeters include electromagnetic circulate meters, turbine circulate meters and ultrasonic move meters. Used in condensing systems, chillers or HVAC. there are multiple flow and vitality measurement alternatives in chilled water systems and Apure presents a variety of chilled water circulate meter technologies which are significantly well fitted to this challenging software. Some considerations for drive technology choice embrace installation necessities, accuracy requirements and maintenance implications. Apure’s insertion turbine and insertion electromagnetic flowmeters are simple to install in new or existing methods, provide correct measurements over a wide range of move regulation, and provide years of trouble-free service in closed-loop hydronic methods.
For installations requiring the highest accuracy, similar to cost allocation, performance contracting or sub-metering, in-line electromagnetic flowmeters could also be the best solution. But there is not a finest chilled water move meter, solely probably the most appropriate one. This is as a result of the major points of each pipeline utility are different. According to the actual measurement state of affairs, choose essentially the most suitable flowmeter. It can save a lot of time and value.
Depending on the necessities of the chilled water application, different Apure meters may be extra suitable. Please evaluation the meters beneath or be happy to contact us for an additional 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 circulate meter in chilled water?
In order to make sure the accurate measurement of chilled water circulate meter, the set up place and technique have to be accurately chosen
Requirements for straight pipe part: it must be put in 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 must be constant. The length of the upstream pipe ought to be no less than 2D straight pipe part. If the installation web site permits, it is strongly recommended that the upstream straight pipe section be 20D and the downstream pipe section be 5D.
Requirements for piping: The internal diameter of the upstream and downstream piping of the installation point is the same as that of the flowmeter.
Requirements on by-pass pipe: In order to make sure that the upkeep of the flowmeter does not have an result on the normal 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 should be set at the same time. Flow management valve to be installed in the downstream of the circulate meter, the upstream put in cut-off valve have to be totally open when in use, to avoid the upstream a half of the fluid produced unstable circulate phenomenon.
The necessities of the external setting: it’s best to install in the indoor, should be installed in the out of doors, should use sunscreen, rain. Lightning protection measures, in order not to affect service life.
Requirements for impurities in the medium: In order to make sure the service lifetime of the flowmeter, the filter ought to be put in in entrance of the straight pipe section of the flowmeter.
Installation site: The flowmeter should be installed in a spot that’s simple to take care of and free from sturdy electromagnetic interference and thermal radiation.
What are the restrictions of electromagnetic flowmeter at low temperature?
The low-temperature resistance of the information.
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 should not exceed -40℃~160℃. Requires a complete take a look at tube and uniform medium. It can display instantaneous flow price, circulate rate, cumulative move fee and cumulative working time.
Ultrasonic calorimeter can measure heat provide, move rate and temperature monitoring. Air conditioning heating and cooling capacity measurement.
How to measure the chilled water move fee of a chiller??
The following is our experience sharing: chiller chilled water move measurement technique. We hope it goes to be helpful to you.
1. Chiller into and out of the water stress detection of water pipes
By detecting the return water strain and outlet water strain values. Check the water circulate fee of the chiller under the inlet and outlet water strain distinction within the random manual of the chiller.
Refer to the corresponding unit water circulate price table or chart in the manual. Thus, determine whether the refrigeration system is normal or not.
And by this difference to find out which part of the transmission pipe resistance worth is larger. And develop the corresponding rectification plan and action.
2. Test the refrigerator return water temperature and water temperature (the unit must be in normal condition)
After half-hour of power on, verify the system or chilled water system inlet and outlet thermometer by way of the unit control 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 large, the water system is flowing too little water by way of the plates. This could trigger the gear to fail to operate correctly or be damaged.
three. Pump running current detection
By detecting the working current of the refrigerator water pump, and the rated current for comparison. You can determine whether or not the precise water circulate is bigger than or lower than the rated water flow of the pump.
Combined with the earlier parameters complete judgment. In order to get an accurate chiller system check and evaluation report.
four. Compressor copper tube suction temperature detection (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 signifies that the water move in the water side warmth exchanger isn’t enough, which causes the evaporation temperature and evaporation pressure to drop.
and causes Freon to nonetheless evaporate and take up heat from the suction tube flowing from the evaporator to the compressor. It will lead to the compressor suction temperature under 0 levels.
In addition, it’s necessary to get rid of the drop of evaporating pressure and evaporating temperature brought on 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 underneath the normal water circulate. The compressor suction temperature is usually larger than 0℃. Below เกจแรงดัน , the water system downside needs to be excluded.
Extended studying:
Solvent circulate meter
Sewage flowmeter
Oil and fuel circulate meter
Relation between circulate and pressuree
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Chilled water circulate meter is a flowmeter that can be used to measure low temperature water. Common chilled water flowmeters embody electromagnetic circulate meters, turbine circulate meters and ultrasonic move meters. Used in condensing methods, chillers or HVAC. there are a number of circulate and power measurement opportunities in chilled water techniques and Apure presents a range of chilled water flow meter technologies which are particularly properly fitted to this challenging application. Some concerns for drive know-how choice embrace installation requirements, accuracy necessities and upkeep implications. Apure’s insertion turbine and insertion electromagnetic flowmeters are simple to put in in new or existing techniques, present correct measurements over a variety of flow regulation, and provide years of trouble-free service in closed-loop hydronic methods.
For installations requiring the best accuracy, similar to value allocation, efficiency contracting or sub-metering, in-line electromagnetic flowmeters could additionally be the best solution. But there is not a best chilled water move meter, solely essentially the most appropriate one. This is as a result of the small print of every pipeline utility are different. According to the actual measurement scenario, select probably the most suitable flowmeter. It can save a lot of time and value.
Depending on the necessities of the chilled water application, other Apure meters may be more suitable. Please evaluation the meters beneath or be at liberty to contact us for an extra dialog.
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 ensure the correct measurement of chilled water circulate meter, the set up place and method have to be correctly chosen
Requirements for straight pipe section: it must be installed horizontally on the pipe (the pipe tilt is lower than 5). During installation, the flowmeter axis ought to be concentric with the pipe axis and circulate course must be consistent. The length of the upstream pipe ought to be no less than 2D straight pipe section. If the installation web site permits, it is suggested that the upstream straight pipe part be 20D and the downstream pipe part be 5D.
Requirements for piping: The inside diameter of the upstream and downstream piping of the set up level is similar as that of the flowmeter.
Requirements on by-pass pipe: In order to ensure that the upkeep of the flowmeter does not have an result on the conventional use of the medium, the cut-off valve (cut-off valve) ought to be put in on the front and rear pipes of the turbine flowmeter, and the by-pass pipe should be set at the similar time. Flow control valve to be put in within the downstream of the circulate meter, the upstream put in cut-off valve must be absolutely open when in use, to keep away from the upstream a part of the fluid produced unstable circulate phenomenon.
The necessities of the external surroundings: it is best to put in in the indoor, must be installed within the outdoor, should use sunscreen, rain. Lightning protection measures, so as not to have an effect on service life.
Requirements for impurities within the medium: In order to make sure the service lifetime of the flowmeter, the filter ought to be installed in entrance of the straight pipe section of the flowmeter.
Installation site: The flowmeter ought to be installed in a spot that’s easy to maintain and free from strong electromagnetic interference and thermal radiation.
What are the restrictions of electromagnetic flowmeter at low temperature?
The low-temperature resistance of the info.
The electrical insulation of the electromagnetic flowmeter transmitter.
Can ultrasonic circulate meters measure chilled water flow?
Ultrasonic flowmeter can measure the flow fee. The temperature should not exceed -40℃~160℃. Requires a complete test tube and uniform medium. It can display instantaneous move fee, circulate rate, cumulative move fee and cumulative operating time.
Ultrasonic calorimeter can measure heat supply, circulate rate and temperature monitoring. Air conditioning heating and cooling capacity measurement.
How to measure the chilled water move rate of a chiller??
The following is our experience sharing: chiller chilled water flow measurement method. We hope it will be helpful to you.
1. Chiller into and out of the water stress detection of water pipes
By detecting the return water stress and outlet water strain values. Check the water move price of the chiller beneath the inlet and outlet water strain distinction within the random manual of the chiller.
Refer to the corresponding unit water move price desk or chart within the manual. Thus, determine whether the refrigeration system is regular or not.
And by this difference to find out which part 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 normal condition)
After half-hour of energy on, examine the system or chilled water system inlet and outlet thermometer via the unit management system parameters.
The inlet water temperature and outlet water temperature may be read when the unit is operating. The difference have to be about 4-6 levels.
If the difference between the inlet and outlet water temperatures is simply too large, the water system is flowing too little water by way of the plates. This may cause the equipment to fail to function properly or be broken.
3. Pump operating present detection
By detecting the operating current of the refrigerator water pump, and the rated present for comparability. You can determine whether or not the precise water flow is larger than or less than the rated water flow of the pump.
Combined with the previous parameters comprehensive judgment. In order to get an accurate chiller system check and analysis report.
four. Compressor copper tube suction temperature detection (only when the refrigeration operation)
If the refrigerator and freezer is turned on after 30 minutes
The compressor suction temperature is detected to be lower than 0 degrees. It implies that the water circulate within the water side heat exchanger is not enough, which causes the evaporation temperature and evaporation stress to drop.
and causes Freon to still evaporate and take in warmth from the suction tube flowing from the evaporator to the compressor. It will result in the compressor suction temperature below zero levels.
In addition, it’s necessary to eliminate the drop of evaporating strain and evaporating temperature attributable to low water temperature setting value.
Non-standard low water temperature unit may be thought-about normal as lengthy as the compressor suction superheat degree is 6-8 levels Celsius.
So under the normal water move. The compressor suction temperature is mostly greater than 0℃. Below this worth, the water system drawback needs to be excluded.
Extended reading:
Solvent flow meter
Sewage flowmeter
Oil and gas move meter
Relation between move and straine