HOFFER HFDPWG-I CONSTACT VELOCITY TUBE FLOWMETER

Writer： admin Time：2021-03-08 18:35 Browse： ℃

1. Introduction:
Hoffer's HFDPWG-I constant velocity tube flowmeter is the use of differential pressure principle of flow measurement instrument. The instrument has the advantages of small size, high degree of digitization, easy installation and accurate measurement.
Compared with the traditional gas flow measurement method, the uniform tube flowmeter has obvious advantages: 1) convenient and accurate measurement. The mass flow rate or standard volume flow rate of the gas can be obtained. 2) High sensitivity, can measure the gas with low flow rate. 3) good seismic performance, long service life. The sensor has no moving parts and is not affected by vibration to the measurement accuracy.
 
2. Technical features:
♦ It can measure a wide range of fluids: suitable for all kinds of gas media
♦ It can measure mass flow and standard volume flow
♦ Wide range: can measure 4Nm/s ~ 50Nm/s, can measure very low velocity and small flow, can measure low pressure gas flow
♦ The sensor structure is easy to clean and disinfect, which is more suitable for hygienic measurement
♦ High accuracy: ±1.0%, ±1.5%, ±2.0%
♦ Digital design: the whole digital circuit measurement, accurate measurement, easy maintenance
♦ Using RS-485 communication, or HART communication, can realize factory automation, integration
♦ High identification standard: 8.3 identification standard, NIST traceability verification certificate
♦ Explosion-proof technology is adopted to ensure the safety of the instrument
♦ Easy installation and maintenance: it can be installed and maintained without stopping production if the site conditions permit
 
3. Parameter specifications:
♦ Measurement medium: gas and liquid
♦ Measurement range: 28~3,000,000 Nm3 /hr
♦ Diameter range: 2 inches ~120 inches (DN50~DN3000)
♦ Process connection: plug in, flange connection
♦ Measurement accuracy: ±1.0%, ±1.5%, ±2.0%
♦ Repetition: ±0.75%
Frequency range: 10~2000 Hz
♦ Display parameters (liquid crystal display) : NM3/hr,KG/hr,NM3,KG
♦ Zero stability: 0.5%
♦ Zero offset (%FS /°C) : 0.05
♦ Measurement temperature: -58~292 °F (-50~100 °C) -- standard
                                                -58~392 °F (-50~200 °C) -- high temperature
♦ Maximum working pressure: 360~930 psig (2.5~ 16MPa)
♦ Measuring tube standard: SS per Din1.4571 (AISI 316TI)
♦ Shell material: 304 stainless steel
♦ Power requirement: 24VDC,±20%; 86~260VAC,50~60Hz
♦ Average power consumption: less than 2W
♦ Output signal: 4~20 mA,0~10 kHz pulse, RS485

4. Selection coding table:

HFDPWG Series
Example  HFDPWG-I-L300-221NN
Plug-in	I							Connections
Other	O
2"(DN50)		25						Long
3"(DN80)		40
4"(DN100)		50
6"(DN150)		75
8"(DN200)		100
10"(DN250)		125
……		..
CS			1					Housing material
SS304			2
SS316L			3
Other			4
CS				1				Measuring Tube
SS304				2
SS316L				3
Hastelloy C				4
Monel				5
Other				9
ANSI150					1			Flange Rating
ANSI300					2
ANSI600					3
PN16					4
PN25					5
PN40					6
With Heat Jacket						Y/N		With or Without Heat Jacket
With DP transmitter							Y/N	With or Without DP transmitter