LLQ-Gas Roots Flow Meter
Product Description
Gas Roots Flow Meter
It is integrated with flow, temperature & pressure detection of intelligent flow meter. Gas roots flowmeter is a new generation flow meter, which can execute automatic compensation of temperature and pressure. This flow meter is based on volumetric measurement theory and designed for accurately measuring the total amount of gas in a pipeline. The flowmeter is composed of two parts: roots flow sensor and flow totalizer. It takes advanced single-chip microcomputer technology & micro-power high-tech, meanwhile, it can be set medium pressure inside, with temperature automatic tracking compensation calculation, can directly to display total volume flow under standard status( P0=101.325kPa, T0=293.15K).
This flow meter is followed standard of the People's Republic of China Machinery Industry Standard JB/T7385-94 "Gas Roots Flowmeter" and our standard of Q/ZCY 05-2002《LLQ Gas Roots Flowmeter》.
LLQ-Gas Roots Flow Meter
DESCRIPTION
It is a positive displacement, rotary type gas meter designed for continuously measuring and indicating the accurate measurement of gas in a pipeline. Gas Roots flow meters are suitable for handling most types of clean, dry, common gases at either constant or varying flow rates. Meters of standard construction are not directly suitable for handling acetylene, biogas or sewage gas. Contact the factory for information on specially constructed meters made of materials directly compatible with these and other gases.
APPLICATION
For some gas industry business accounting which used in some fields,like, restaurant, hotels, gas pressure regulation station, civil
boiler, etc. Also available to measure some gases like, propane, nitrogen and others which have not corrosive mediums.
Technical Data
TECHNICAL DATA
Connection | DIN PN16 |
Accuracy | ±1.5% of rate |
±1.0% of rate | |
Condition | Fluid Temperature:-10...+60℃ |
Ambient Temperature:-30...+60℃ | |
Relative Humidity:5%-90 % RH | |
Atmospheric Pressure:86...106Kpa | |
Power Supply | Main Power:24V DC |
Backup Battery:3.6V DC Lithium Battery | |
Power Consumption | <1W |
Output | Pulse |
4-20mA | |
IC card | |
Modbus RS485 |
Model Selection
SPECIFICATION
Model | Suffix Code | Description | |||||
LLQ- | ① | ② | ③ | ④ | ⑤ | ⑥ | Gas Roots Flowmeter |
Diameter | XXX | 025:DN25 | |||||
100:DN100 | |||||||
250:DN250 | |||||||
Flow Range | Q-XX | Refer to table | |||||
Converter Type | N | Basic Meter:Mechanical display without output | |||||
C | Digital display;Temperature and pressure compensation;Pulse;4-20mA; | ||||||
Optional：Modbus RS485;Control signal for IC card | |||||||
D | Digital Display;Automatic Temperature and pressure compensation | ||||||
Standard out:4-20mA/Pulse/Control signal for IC card | |||||||
Optional:Modbus RS485 | |||||||
Accuracy | 10 | ±1.0% of rate | |||||
15 | ±1.5% of rate | ||||||
Pressure Rating | WP1 | 1.0Mpa | |||||
WP2 | 1.6Mpa | ||||||
Connection | DXX | D16:DIN PN16 Flange;D25:DIN PN25 Flange;DN40:DIN PN40 Flange... | |||||
AXX | A15:ANSI 150# Flange;A30:ANSI 300# Flange;A60:ANSI 600# Flange... | ||||||
JXX | J10:JIS 10K Flange;J20:JIS 20K Flange;J40:JIS 40K Flange... | ||||||
FLOW RANGE
Diameter | Model | Start Rate | Max Flow Rate | Pressure Loss | Pressure Rate | Accuracy | Turndown Ratio | Body Material |
m³/h | m³/h | Pa | Mpa | |||||
DN25 | Q-16 | 0.6 | 16 | 120 | 1.0/1.6 | 1.5/1.0 | 20:1 |
Aluminum Alloy |
DN40 | Q-20 | 0.6 | 20 | 130 | 1.0/1.6 | 1.5/1.0 | 20:1 | |
Q-25 | 0.6 | 25 | 130 | 1.0/1.6 | 1.5/1.0 | 20:1 | ||
Q-30 | 0.6 | 30 | 130 | 1.0/1.6 | 1.5/1.0 | 20:1 | ||
Q-40 | 0.6 | 40 | 180 | 1.0/1.6 | 1.5/1.0 | 30:1 | ||
Q-60 | 0.6 | 60 | 180 | 1.0/1.6 | 1.5/1.0 | 60:1 | ||
DN50 | Q-20 | 0.6 | 20 | 140 | 1.0/1.6 | 1.5/1.0 | 20:1 | |
Q-25 | 0.6 | 25 | 140 | 1.0/1.6 | 1.5/1.0 | 20:1 | ||
Q-30 | 0.6 | 30 | 140 | 1.0/1.6 | 1.5/1.0 | 20:1 | ||
Q-40 | 0.6 | 40 | 200 | 1.0/1.6 | 1.5/1.0 | 30:1 | ||
Q-60 | 0.6 | 60 | 200 | 1.0/1.6 | 1.5/1.0 | 60:1 | ||
Q-85 | 0.6 | 85 | 210 | 1.0/1.6 | 1.5/1.0 | 70:1 | ||
DN65 | Q-100 | 0.6 | 100 | 220 | 1.0/1.6 | 1.5/1.0 | 70:1 | |
Q-140 | 0.6 | 140 | 220 | 1.0/1.6 | 1.5/1.0 | 120:1 | ||
DN80 | Q-100 | 0.8 | 100 | 220 | 1.0/1.6 | 1.5/1.0 | 70:1 | |
Q-140 | 0.8 | 140 | 240 | 1.0/1.6 | 1.5/1.0 | 100:1 | ||
Q-200 | 0.8 | 200 | 240 | 1.0/1.6 | 1.5/1.0 | 100:1 | ||
DN100 | Q-300 | 0.8 | 300 | 280 | 1.0/1.6 | 1.5/1.0 | 110:1 | |
Q-450 | 0.8 | 450 | 300 | 1.0/1.6 | 1.5/1.0 | 110:1 | ||
DN150 | Q-650 | 10 | 650 | 580 | 1.0/1.6 | 1.5/1.0 | 80:1 | Cast lron |
Q-1000 | 10 | 1000 | 600 | 1.0/1.6 | 1.5/1.0 | 80:1 | ||
DN200 | Q-1600 | 20 | 1600 | 850 | 1.0/1.6 | 1.5/1.0 | 60:1 | |
DN250 | Q-3000 | 30 | 3000 | 1050 | 1.0/1.6 | 1.0/1.6 | 40:1 |