【Material】：SS304 Stainless steel
【Price】：$190.00 - $890.00
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Introduction to Fuel Flow Meter
The fuel flow meter is a precision flow measuring instrument, which can be used to measure the flow of liquid when matched with the corresponding flow totalizer.
And total. Fuel flow meters are widely used in measurement and control systems in the fields of petroleum, chemical industry, metallurgy, scientific research, etc. Fuel flow meters equipped with sanitary joints can be used in the pharmaceutical industry.
The structure of the integrated fuel flow meter is explosion-proof design, which can display the total flow rate, the instantaneous flow rate and the flow rate percentage. The battery adopts long-term lithium battery. The battery life of single-function integrator can reach more than 5 years, and the battery life of multi-function indicator can reach more than 12 months.
The integrated meter head can display many flow units, including cubic meters, gallons, liters, standard cubic meters, standard liters, etc., fixed pressure and temperature parameters can be set to compensate for the gas, and the pressure and temperature parameters do not change much. , You can use this instrument to perform fixed compensation accumulation.
Features
N High accuracy, generally up to ±1%R, ±0.5%R, high-precision type up to ±0.2%R;
N Good repeatability, short-term repeatability can reach 0.05%~0.2%. Because of its good repeatability, such as frequent calibration or online calibration can get extremely high accuracy, it is the preferred flowmeter in trade settlement;
N Equipped with three-point correction of meter coefficients, intelligent compensation of non-linear meter coefficients, and on-site corrections;
NAll valid data will be kept for 10 years after power failure;
N Wide range, medium and large diameters can reach 1:20, and small diameters are 1:10;
N Compact and lightweight structure, convenient installation and maintenance, and large circulation capacity;
N Suitable for high-pressure measurement, no holes are required on the meter body, and it is easy to make a high-pressure meter;
N There are many types of special sensors, which can be designed as various special sensors according to the special needs of users, such as low temperature type, two-way type, downhole type, special type for sand mixing, etc.
N can be made into insert type, suitable for large-caliber measurement, low pressure loss, low price, can be taken out continuously, easy to install and maintain;
Technical characteristics
High accuracy, generally up to ±1%R, ±0.5%R, high-precision type up to ±0.2%R;
·Good repeatability, short-term repeatability can reach 0.05%~0.2%, precisely because of the good repeatability, such as frequent calibration or online calibration can be obtained
to extremely high accuracy, it is the preferred flow meter in trade settlement;
·Output pulse frequency signal, suitable for total measurement and connection with computer, no zero drift, strong anti-interference ability;
·High frequency signals (3~4kHz) can be obtained, and the signal resolution is strong;
·Wide range, medium and large diameters can reach 1:20, and small diameters are 1:10;
·Compact and lightweight structure, convenient installation and maintenance, and large circulation capacity;
·Applicable to high-pressure measurement, no holes are required on the meter body, and it is easy to make a high-pressure meter;
·There are many types of special sensors, which can be designed as various special sensors according to the special needs of users, such as low temperature type, two-way type, downhole
type, special type for mixing sand, etc.;
·It can be made into a plug-in type, suitable for large-caliber measurement, with low pressure loss, low price, continuous flow removal, easy installation and maintenance.
Technical Parameters
Nominal diameter: Pipeline type: DN4～DN200
Plug-in type: DN100～DN2000
Accuracy grade: Pipeline type: ±0.5 grade, ±1.0 grade
Plug-in type: ±1.5 level, ±2.5 level
Environmental temperature: -20℃～50℃
Medium temperature: Measuring liquid: -20℃～120℃
Measuring gas: -20℃～80℃
Atmospheric pressure: 86KPa～106KPa
Nominal pressure: 1.6 Mpa, 2.5Mpa, 6.4Mpa, 25Mpa
Explosion-proof grade: ExdIIBT4
Connection mode: thread connection, flange clamping, flange connection, plug-in, etc.
Straight pipe section requirements: gas: upstream straight pipe section should be ≥10DN, downstream straight pipe section should be ≥5DN
Liquid: The upstream straight pipe section should be ≥20DN, and the downstream straight pipe section should be ≥5DN
Plug-in type: The upstream straight pipe section should be ≥20DS, and the downstream straight pipe section should be ≥7DS (DS is the actual measured inner diameter of the pipe)
Display mode: (1) Remote transmission display: pulse output, current output (with display instrument)
(2) On-site display: 8-digit LCD display cumulative flow, unit (m3)
4-digit LCD display instantaneous flow, unit (m3/h), battery power, frequency, flow rate
(3) Temperature and pressure compensation type:
A, display standard instantaneous flow and standard cumulative flow
B, display current pressure, temperature, battery voltage
output function:
(1) Pulse output, the p-p value is determined by the power supply
(2) 4～20mA two-wire current output
(3) Unit volume pulse output and sensor raw pulse output
（4）With RS485 communication interface
Power supply:
(1) DC5～24V
(2) The standard 3V lithium battery is installed inside the instrument and can be used continuously for more than eight years
(3) Temperature and pressure compensation type 3V lithium battery installed inside the instrument can be used continuously for more than four years
Transmission distance: The distance from the sensor to the display can be up to 500m
Technical parameters 1, basic parameters
Instrument diameter (mm) and connection method
4, 6, 10, 15, 20, 25, 32, 40 are connected by thread
(15, 20, 25, 32, 40) 50, 65, 80, 100, 125, 150, 200 are connected by flange
Accuracy class
±1%R, ±0.5%R, ±0.2%R (specially required)
Turndown ratio
1:10:1:15:1:20
Instrument material
304 stainless steel, 316 (L) stainless steel, etc.
Measured medium temperature (℃)
-20～＋120℃
Environmental conditions
Temperature -10～+55℃, relative humidity 5%～90%, atmospheric pressure 86～106Kpa
output signal
Sensor: pulse frequency signal, low level ≤0.8V, high level ≥8V
Transmitter: two-wire 4 ~ 20mADC current signal
Power supply
Sensor: +12VDC, +24VDC (optional)
Transmitter: +24VDC
On-site display type: the meter comes with 3.2V lithium battery or +24VDC external power supply
Signal transmission line
STVPV3×0.3 (three-wire system), 2×0.3 (two-wire system)
Transmission distance
≤1000m
Signal line interface
Basic type: Hausmann connector or self-contained three-core cable; explosion-proof type: internal thread M20×1.5
Explosion-proof grade
Basic type: non-explosion-proof product; explosion-proof type: ExdIIBT6
Protection level
IP65
Air flow meter overview
SYTF-LWQ series air flowmeter is a new integrated intelligent flowmeter that adds temperature and pressure automatic tracking compensation and compression factor correction functions on the basis of the original LWQZ series air flowmeter. It can measure the flow value measured under working conditions. PTZ corrects and directly displays the total volume of the standard state (P0=101325Pa, T0=293.15K). Expert appraisal: Its comprehensive performance indicators have reached the domestic superior level of similar products and the international level in the mid-1990s. It is an ideal instrument for gas measurement and natural gas trade measurement in petroleum, chemical, metallurgical and urban gas industries.
2. Features of air flow meter:
1. The measurement range is wide, the lower limit flow rate is less than 0.5m/s, the pressure loss is small, and the impeller has strong impact resistance.
2. It has high anti-electromagnetic interference and anti-vibration ability, adopts fully sealed isolation to protect self-lubricating bearings, reliable performance and long working life.
3. Adopting advanced ultra-low power consumption single-chip microcomputer technology, the whole machine has strong functions, low power consumption and superior performance. Intelligent flow indicator with non-linear accuracy compensation function. The accuracy is better than ±0.02%.
4. The meter coefficients can be set online by buttons and can be displayed on the LCD screen. The LCD screen is intuitive and clear with high reliability.
5. Use EEPROM to protect the accumulated flow and meter coefficient from power failure. The protection time is greater than 10 years.
6. Pressure compensation can be carried out under the stable pressure state of the measured gas.
3. Main technical parameters of air flow meter
★ Flowmeter specifications, basic parameters and performance indicators (see Table 1)
★ Accuracy: 0.5, 1.0;
★ Conditions of use: 1. Ambient temperature -20℃～50℃;
2. Relative temperature: 5%～95%;
3. The temperature of the measured medium: -20℃～80℃;
4. Atmospheric pressure: 86Kpa～106Kpa;
5. Explosion-proof grade: ibⅡBT4.
Four, electrical characteristics
1. Display mode:
(1) LWQ-A remote transmission display: pulse output (with display instrument);
(2) LWQ-B on-site display: 7-digit LCD displays cumulative flow, unit (m3) 7-digit LCD displays instantaneous flow, unit (m3/h) (with Chinese characters display)
(3) LWQ-C temperature and pressure compensation type:
a. Display standard instantaneous flow and standard cumulative flow;
b. Display the instantaneous flow under working conditions and the cumulative flow under working conditions;
c. Display current pressure, temperature, battery voltage;
d. Display date and clock.
2. Output function:
(1) Pulse output, the p-p value is determined by the power supply;
(2) 4~20mA two-wire current output;
(3) Pulse output per unit volume and raw pulse output of the sensor;
(4) With RS485 half-duplex communication interface, RS232 half-duplex communication interface.
3. Power supply:
(1) LWQ-A; DC5~24V;
(2) LWQ-B: 3V lithium battery installed inside the instrument can be used continuously for more than eight years;
(3) LWQ-C: 3V lithium battery installed inside the instrument can be used continuously for more than four years
