Chilled water move meter is a flowmeter that can be utilized to measure low temperature water. Common chilled water flowmeters embrace electromagnetic circulate meters, turbine flow meters and ultrasonic circulate meters. Used in condensing techniques, chillers or HVAC. there are multiple circulate and power measurement opportunities in chilled water methods and Apure provides a variety of chilled water flow meter technologies that are notably properly suited to this difficult software. Some issues for drive technology choice embody installation requirements, accuracy requirements and upkeep implications. Apure’s insertion turbine and insertion electromagnetic flowmeters are straightforward to put in in new or current systems, present correct measurements over a variety of move regulation, and supply years of trouble-free service in closed-loop hydronic systems.
For installations requiring the very best accuracy, similar to value allocation, efficiency contracting or sub-metering, in-line electromagnetic flowmeters may be one of the best resolution. But there isn’t any finest chilled water circulate meter, only essentially the most acceptable one. This is as a end result of the small print of each pipeline utility are totally different. According to the precise measurement state of affairs, select the most appropriate flowmeter. It can save plenty of time and value.
Depending on the necessities of the chilled water utility, different Apure meters could additionally be more appropriate. Please review the meters below or be at liberty to contact us for a further 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 installation flow meter in chilled water?
In order to ensure the accurate measurement of chilled water circulate meter, the installation position and method must be correctly chosen
Requirements for straight pipe part: it should be put in horizontally on the pipe (the pipe tilt is less than 5). During installation, the flowmeter axis should be concentric with the pipe axis and circulate course must be constant. The size of the upstream pipe ought to be at least 2D straight pipe section. If the set up web 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 installation level is identical as that of the flowmeter.
Requirements on by-pass pipe: In order to guarantee that the maintenance of the flowmeter doesn’t have an result on the normal use of the medium, the cut-off valve (cut-off valve) should be installed on the front and rear pipes of the turbine flowmeter, and the by-pass pipe must be set at the similar time. Flow control valve to be installed in the downstream of the move meter, the upstream put in cut-off valve have to be totally open when in use, to keep away from the upstream part of the fluid produced unstable circulate phenomenon.
The necessities of the external surroundings: it’s best to put in within the indoor, must be put in in the outside, must use sunscreen, rain. Lightning protection measures, so as not to have an effect on service life.
Requirements for impurities in the medium: In order to ensure the service lifetime of the flowmeter, the filter should be installed in entrance of the straight pipe part of the flowmeter.
Installation web site: The flowmeter ought to be put in in a place that’s easy to maintain up 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 information.
The electrical insulation of the electromagnetic flowmeter transmitter.
Can ultrasonic flow meters measure chilled water flow?
Ultrasonic flowmeter can measure the circulate rate. The temperature mustn’t exceed -40℃~160℃. Requires a whole check tube and uniform medium. It can show instantaneous move price, circulate fee, cumulative flow fee and cumulative running time.
Ultrasonic calorimeter can measure heat provide, move price and temperature monitoring. Air conditioning heating and cooling capability measurement.
How to measure the chilled water move rate of a chiller??
The following is our expertise sharing: chiller chilled water circulate measurement method. We hope will in all probability be useful to you.
1. Chiller into and out of the water pressure detection of water pipes
By detecting the return water stress and outlet water stress values. Check the water flow fee of the chiller beneath the inlet and outlet water strain difference in the random handbook of the chiller.
Refer to the corresponding unit water circulate rate table or chart within the manual. Thus, decide whether the refrigeration system is normal or not.
And by this distinction to determine which part of the transmission pipe resistance worth is higher. And develop the corresponding rectification plan and action.
2. Test the fridge return water temperature and water temperature (the unit needs to be in normal condition)
After 30 minutes of power on, examine the system or chilled water system inlet and outlet thermometer via the unit control system parameters.
The inlet water temperature and outlet water temperature may be read when the unit is operating. The difference should be about 4-6 degrees.
If the difference between the inlet and outlet water temperatures is simply too large, the water system is flowing too little water via the plates. This may trigger the tools to fail to function correctly or be damaged.
three. Pump running current detection
By detecting the operating current of the fridge water pump, and the rated current for comparability. You can decide whether or not the precise water flow is bigger than or less than the rated water move of the pump.
Combined with the earlier parameters comprehensive judgment. In order to get an accurate chiller system test and evaluation report.
4. เพรสเชอร์เกจ (only when the refrigeration operation)
If the fridge 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 move within the water side heat exchanger just isn’t sufficient, 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 lead to the compressor suction temperature beneath zero levels.
In addition, it is essential to eliminate the drop of evaporating pressure and evaporating temperature attributable to low water temperature setting value.
Non-standard low water temperature unit could be considered regular so long as the compressor suction superheat diploma is 6-8 levels Celsius.
So beneath the traditional water move. The compressor suction temperature is generally greater than 0℃. Below this value, the water system drawback needs to be excluded.
Extended reading:
Solvent flow meter
Sewage flowmeter
Oil and gas move meter
Relation between move and stresse
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Chilled water circulate meter is a flowmeter that can be utilized to measure low temperature water. Common chilled water flowmeters include electromagnetic move meters, turbine flow meters and ultrasonic flow meters. Used in condensing systems, chillers or HVAC. there are multiple flow and power measurement alternatives in chilled water systems and Apure presents a spread of chilled water flow meter technologies which might be particularly well suited for this challenging software. Some issues for drive expertise selection embrace set up requirements, accuracy necessities and upkeep implications. Apure’s insertion turbine and insertion electromagnetic flowmeters are straightforward to install in new or present techniques, provide correct measurements over a variety of flow regulation, and offer years of trouble-free service in closed-loop hydronic techniques.
For installations requiring the highest accuracy, such as price allocation, efficiency contracting or sub-metering, in-line electromagnetic flowmeters could also be the most effective resolution. But there is not a greatest chilled water flow meter, solely probably the most appropriate one. This is because the main points of each pipeline utility are completely different. According to the precise measurement state of affairs, choose essentially the most appropriate flowmeter. It can save lots of time and cost.
Depending on the necessities of the chilled water software, different Apure meters may be extra appropriate. 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 set up circulate meter in chilled water?
In order to make sure the correct measurement of chilled water move meter, the installation position and methodology have to be correctly chosen
Requirements for straight pipe part: it should be installed horizontally on the pipe (the pipe tilt is lower than 5). During set up, the flowmeter axis ought to be concentric with the pipe axis and move course ought to be constant. The size of the upstream pipe ought to be at least 2D straight pipe section. If the set up web site permits, it is 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 set up level is the same as that of the flowmeter.
Requirements on by-pass pipe: In order to make certain that the maintenance of the flowmeter doesn’t have an result on the conventional use of the medium, the cut-off valve (cut-off valve) ought to be installed on the front and rear pipes of the turbine flowmeter, and the by-pass pipe must be set on the same time. Flow control valve to be put in in 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 part of the fluid produced unstable move phenomenon.
The requirements of the exterior setting: it’s best to install within the indoor, should be put in in the outdoor, should use sunscreen, rain. Lightning protection measures, in order not to affect service life.
Requirements for impurities in the medium: In order to ensure the service lifetime of the flowmeter, the filter must be put in in front of the straight pipe section of the flowmeter.
Installation web site: The flowmeter ought to be installed in a spot that’s straightforward to take care of and free from robust 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 flow meters measure chilled water flow?
Ultrasonic flowmeter can measure the flow rate. The temperature shouldn’t exceed -40℃~160℃. Requires a whole test tube and uniform medium. It can show instantaneous move rate, move price, cumulative move fee and cumulative running time.
Ultrasonic calorimeter can measure heat supply, move rate and temperature monitoring. Air conditioning heating and cooling capability measurement.
How to measure the chilled water circulate price of a chiller??
The following is our experience sharing: chiller chilled water move measurement approach. We hope it is going to 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 strain values. Check the water circulate price of the chiller beneath the inlet and outlet water stress difference within the random manual of the chiller.
Refer to the corresponding unit water move rate table or chart within the handbook. Thus, determine whether the refrigeration system is regular or not.
And by this distinction to determine which part of the transmission pipe resistance worth is higher. And develop the corresponding rectification plan and motion.
2. Test the refrigerator return water temperature and water temperature (the unit needs to be in regular condition)
After half-hour of energy on, examine 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 may be learn when the unit is working. The difference must be about 4-6 degrees.
If the distinction 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 gear to fail to operate properly or be damaged.
three. Pump running present detection
By detecting the running present of the refrigerator water pump, and the rated current for comparability. You can determine whether or not the precise water flow is larger than or less than the rated water move of the pump.
Combined with the earlier parameters comprehensive judgment. In order to get an correct chiller system take a look at 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 levels. It signifies that the water move within the water aspect warmth exchanger is not enough, which causes the evaporation temperature and evaporation strain 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 under 0 levels.
In addition, it’s necessary to get rid of the drop of evaporating pressure and evaporating temperature attributable to low water temperature setting value.
Non-standard low water temperature unit can be thought-about regular so long as the compressor suction superheat diploma is 6-8 degrees Celsius.
So beneath the normal water circulate. The compressor suction temperature is mostly greater than 0℃. Below this value, the water system drawback must be excluded.
Extended reading:
Solvent flow meter
Sewage flowmeter
Oil and gasoline move meter
Relation between circulate and stresse