Shanghai measures various gas Roots flow meters

NegotiableUpdate on 11/19

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Nature of the Manufacturer: Producers

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Overview

The Roots flowmeter for measuring various gases in Shanghai is a volumetric measuring instrument with a mechanical counter. Its principle is that when the measured gas enters the flow meter at the inlet end, the rotor is driven to rotate, and a certain volume of flow is discharged from the outlet after each rotation. This is the working principle of selective rotation and fixed displacement, and then transmitted to the counter through a magnetic coupling mechanism to display the volume of the measured gas. The gas Roots flowmeter can be equipped with a low-frequency pulse transmitter and a volume correction instrument for temperature and pressure compensation and compression factor correction. The standard volume of gas can be displayed on the volume correction instrument.

Product Details

Shanghai measures various gas Roots flow meters

● Natural gas
Urban gas
●LPG
● Propane, butane
Industrial inert gases such as air and ammonia

Novel design and beautiful appearance
Long service life, with a normal operating period of up to10In the year, precision machining and balancing of the rotor, high-strength surface treatment, and wear-resistant rotation are all exquisite designs and processes that ensure the long-term normal operation of the flowmeter.
High precision, high reliability, no need for adjustment for long-term use, and not affected by changes in medium conditions.
Small pressure loss, pressure loss of different specifications0.07kpa~0.55kpa

DBLThe gas Roots flowmeter is a volumetric measuring instrument with a mechanical counter. Its principle is that when the measured gas enters the flow meter at the inlet end, the rotor is pushed to rotate, and a certain volume of flow is discharged from the outlet after each rotation. This is the working principle of selective rotation and fixed displacement, and then transmitted to the counter through a magnetic coupling mechanism to display the volume of the measured gas. The gas Roots flowmeter can be equipped with a low-frequency pulse transmitter and a volume correction instrument for temperature and pressure compensation and compression factor correction. The standard volume of gas can be displayed on the volume correction instrument. Based on the principle of volumetric measurement, its characteristics are high accuracy, large flow range, compact and sturdy structure, no need for straight pipe sections at the inlet and outlet, long service life, suitable for installation in narrow environments, and precise measurement of gas flow with large load fluctuations under harsh climatic conditions. This product has a novel design, beautiful appearance, light weight, high precision, and easy installation and use.

Shanghai measures various gas Roots flow meters
Technical Specifications:

管道口径（mm）	25、40、50、65、80、100、150、200、250
accuracy	±1.5%、 ±1%(Customization required)
execution standard	Gas waist wheelJB/T7385-1994
Voltage resistance level	1.0mpa
Instrument material	Table body: Aluminum alloy or cast iron	Converter: Cast aluminum
	Waist wheel: aluminum alloy	axis Cheng: Hard alloy
working power supply	1External power supply:+24vDC±15% 2Internal power supply:1groupDC3.6Vlithium battery
Total power consumption	Average power consumption ≤3.6mw,In sleep state ≤1.8mw
Terms of Use	Medium temperature:-20C°~+80C°	Relative humidity:5%~95%
	Ambient temperature-30~+60C°	Atmospheric pressure:70kpa~106kpa
Storage records	Start stop records, diary entries, timed intervals, and other records
output function	current4~20mA,Pulse output,RS485
Installation method	flange connection
Explosion-proof rating	ExiaIICT4(Intrinsic safety type)
Protection level	IP65

Flow range:

Nominal Diameter （mm）	caliber	Starting traffic (m3/h)	measurement range (m3/h)	accuracy class	Flow meter material	Voltage resistance level （mpa）
DBL-16	DN25	0.5	3~16	1.0、1.5	aluminum alloy	1.0The1.6
DBL-20	DN40	0.5	3~20	1.0、1.5	aluminum alloy	1.0The1.6
DBL-25		0.5	3~25	1.0、1.5	aluminum alloy	1.0The1.6
DBL-30		0.5	3~30	1.0、1.5	aluminum alloy	1.0The1.6
DBL-40		0.7	3~40	1.0、1.5	aluminum alloy	1.0The1.6
DBL-60		0.8	4~60	1.0、1.5	aluminum alloy	1.0The1.6
DBL-20	DN50	0.5	3~20	1.0、1.5	aluminum alloy	1.0The1.6
DBL-25		0.5	3~25	1.0、1.5	aluminum alloy	1.0The1.6
DBL-30		0.5	3~30	1.0、1.5	aluminum alloy	1.0The1.6
DBL-40		0.7	3~40	1.0、1.5	aluminum alloy	1.0The1.6
DBL-60		0.8	4~60	1.0、1.5	aluminum alloy	1.0The1.6
DBL-85		0.8	4~85	1.0、1.5	aluminum alloy	1.0The1.6
DBL-100	DN65	1	5~100	1.0、1.5	aluminum alloy	1.0The1.6
DBL-140	DN65	1	5~140	1.0、1.5	aluminum alloy	1.0The1.6
DBL-100	DN80	1	5~100	1.0、1.5	aluminum alloy	1.0The1.6
DBL-140		1	5~140	1.0、1.5	aluminum alloy	1.0The1.6
DBL-200		1	5~200	1.0、1.5	aluminum alloy	1.0The1.6
DBL-300	DN100	1.8	6~300	1.0、1.5	aluminum alloy	1.0The1.6
DBL-450	DN100	1.8	6~450	1.0、1.5	aluminum alloy	1.0The1.6
DBL-650	DN150	5	30~650	1.0、1.5	cast iron	1.0The1.6
DBL-1000	DN150	6	50~1000	1.0、1.5	cast iron	1.0The1.6
TBL-1600	DN200	8	80~1600	1.0、1.5	cast iron	1.0The1.6
TBL-3000	DN250	20	150~3000	1.0、1.5	cast iron	1.0、1.6

Selection code:DBL -flow range-caliber-connection method-material-pressure-output-power supply-precision

flow range	The flow range is shown in the above figure
Instrument caliber	DN25 ~ DN250
connection method	1, flange	2Thread
Instrument material	ACast iron	BAluminum alloy
pressure rating	1.0 1.6
output method	1Pulse signal under working conditionsICCard controller output signal The4-20mAStandard analog signal		2TheRS485
power supply method	AExternal power supply:+24vDC±15%	B、 Internal power supply:1groupDC3.6Vlithium battery
accuracy class	1.0 1.5

Example of codingDBL - 60 - DN50 - 1 - A - 1.0 - 2 - B- 1.0
solution Explanation: Gas Roots flowmeter, flow range4~60m3/h, caliberDN50, flange connection, cast iron material, precision1.0, outputRS485Internal power supply:1groupDC3.6Vlithium battery,accuracy class1.0Grade.