HG-50 Metal Tube Rotameter ( New Model: SY-LZ )

Product name: Metal Tube Rotameter, also called Variable Area Flow Meter

Application: Measure volume flow of liquid or gas,  suitable for small flow rate process condition.


Product Description

  • Serve Liquid or Gas fluid, suitable to measure small flow rate
  • Meter size: DN15 to DN150,  DN15 – DN50 connection option: Thread, Flange, Tri-clamp, DN50 above connection option: Flange, Tri-clamp
  • Mounting direction option:  Vertically mounting, Horizontally mounting (on request)
  • Process connection option: Flange,  Tri-clamp, Thread
  • Range ability: 10 : 1
  • Measuring accuracy: 1.0 % – 1.5% of calibration range
  • Indicator option:  Mechanical indicator: -only indicate instant flow;  Digital indicator: -display instant flow and total flow
  • Power supply option: 24VDC / 220VAC / 3.6V battery
  • Output: 4-20mA (for powered by 24VDC & 220VAC)
  • Communication option: RS485 ( Modbus protocol),  HART
  • Electrical connection: M20*1.5, Ex-protection: Exd IIBT4
  • Wetted material option: SS304, SS316, SS316L, PTFE lining
  • Can be configured with flow rate Upper-limit alarm  and Lower-limit alarm  (alarm function is available for powered by 24VDC & 220VAC)
Technical data

● Measuring Range: water (20℃) 6~15000 l/h;  Air (0.1013MPa 20℃) 0.05~4000 m3/h
● Turndown Ratio: 10:1  (20:1 for special type)
● Accuracy:  1.5 (1.0 for special type)
● Operation Pressure:  DN15~DN50 PN4.0MPa  DN80~DN200 PN1.6MPa (other pressure need to customize)
● Medium Temperature: Normal temperature -20℃~120℃,  high temperature 120 ~ 250℃
● Ambient temperature:  -40℃ ~ +120℃(electrical remote type -10 ~ 65℃)
● Viscosity DN15: ≤5mPa.s(H15.1~H15.3); ≤30mPa.s(H15.4~H15.9);  DN25: ≤250mPa.s;  DN50~DN150:≤300mPa.s
● LCD Display,  instant flow indication range: 0 ~ 50000
● Accumulative flow indication range: 0 ~ 99999999
● Output standard signal: two-wire 4~20 mA
● Pulse signal: minimum interval 50ms
● Alarm signal: collector open, MAX100mA@30VDC internal impedance 100Ω
● Power Supply:  standard type 24V DC (10.8VDC ~ 36VDC);  AC: 220V AC (85 ~ 265V AC);  Battery type: 3.6@4AH Nickel-hydrogen battery
● Connection Standard: DIN2501 or ANSI Flange,  Special Other standards on request
● Electrical Connection:  M20×1.5;  1/2”NPT (optional)
● Enclosure Protection: IP65;  Explosion Proof:  Intrinsically safe- ExiaIICT3~6;  Explosion isolation- ExdIIBT4


Field installation

hg 50 install1




Answer : Please send your question or enquiry to our email: sales@hginstrument.com, we will forward the questions to the related engineer.

Answer :  Please communicate with the sales about the return procedure before returning product.

Answer :  The delivery time depends on the order quantity and product specification.  If the product’s specification is conventional ( not special ),  delivery time is 5 or 7 working days for order quantity ≤ 10 pieces;  delivery time is 2 or 3 working weeks for order quantity 15 ~ 30 pieces. 

Answer :  by Courier,  by Sea or by Air

Answer :  Yes,  Generally warranty is one year.

Answer :  From year 2015  to year 2021,  average annual sales is RMB 350 million ( about USD 54.7 million )

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