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Digital flow meter for heating ventilation air conditioning
Item No.：DG-EFM004
MOQ：1 pc
Application of the digital flow meter:
Central air-conditioning
Heating industry
Heat exchanger unit
Advantages of the digital flow meter:
The electromagnetic flow meter is no pressure loss, the measurement is not affected by temperature、pressure and other changes.
A heat insulation device between the transducer and the sensor to prevent the transfer of temperature
Dual current output or double pulse output (positive and negative flow rate respectively) can be selected.
The BACnet communication protocol can be selected.
Excellent low flow rate measurement performance with a 400:1 turndown ratio
The four-electrode structure is suitable for the installation and measurement of various process pipelines, including plastic pipes, fluoride-lined pipes and cement pipes, etc., without the need for another grounding ring.
Reliable empty pipe detection technology
Five-segment nonlinear correction function
Both the power supply and the output circuit adopt reliable lightning protection and surge protection, with high reliability and low fault.
The measurement is stable and the stability is excellent
Performance parameters of the digital flow meter：
Accuracy class: 0.25 and 0.5
Repeatability: ±0.1% of measured value
Response time: the maximum 0.3 milliseconds relative to the input change
Stability: the stability over 6 months is ±0.1% of measured value
Impact of ambient temperature: ±0.25% over operating temperature range
Impact of the installation location: the installation is not affected as long as the sensor can be fully charged and enough straight sections are ensured before and afterStartup time: it takes 50 milliseconds to start from zero flow
Preheating time: it takes 15 minutes from power supply to rated measurement accuracy
Sensor parameters of the digital flow meter:
Nominal diameter |
3/8 inch to 32 inch ( DN10 to DN800 ) |
The measured fluid conductivity requirements |
≥ 5 μS/cm |
Temperature range of the measured fluid |
- 29 to 150 ℃ (PTFE lining); -29 to 80 (rubber lining); -29 to 180 (PFA lining) |
Body material |
SUS304 stainless steel |
Flange material and shell |
carbon steel, SUS304 stainless steel (optional) |
Shell coating |
anti-corrosion polyester paint |
Lining material |
PTFE, neoprene, PFA and polyurethane linings, etc. |
Electrode material |
316L, Hastelloy B2/C276, Titanium, Tantalum, Platinum, Tungsten Carbide, etc. |
Process connection |
DIN PN10 to PN250 ; ANSI Class 150 / class 300; JIS10 /JIS20K |
Excitation coil impedance |
Maximum 115 ohms |
Sensor protection level |
IP65、IP68 |
Converter parameters of the digital flow meter:
Ambient temperature range |
- 20 to 149 of (- 29 to 65 ℃) |
Shell material |
low copper die-casting aluminum (standard), or stainless steel material converter shell |
Power |
AC 86 to 265V, 50/60HZ, 1A fast fuse insurance; DC 16V to 36V, 1A fast fuse insurance |
Output |
4-20 mA output, pulse or frequency output |
Communication protocol |
RS485 communication, Hart protocol and Profibus-DP protocol can be selected. |
Protection level |
IP65 |
Correction |
10-segment nonlinear correction |
LCD display |
showing instantaneous flow, total volume, flow rate, etc. |
Excitation current |
Three amplitude excitation technology,excitation current 250mA |
Electrical Interface |
2 PG13.5 |
Power |
10 watts |
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