Ultrasonic gas flow rate meter Energoflow GFA-202
Ultrasonic Gas Flow Meters Energoflow GFA-202
Overview
- The flow meter is powered by an built-in lithium battery having service life not less than 4 years.
- The flow meter carries out direct measurement of temperature and pressure and on basis of the measured values of these parameters calculates the kinematic gas viscosity, which is then used for calculating correction coefficients of Reynolds number.
- measurement of the volumetric flow rate and volume of natural gas
- measurement of temperature of gas
- measurement of absolute pressure gas
TECHNICAL CHARACTERISTICS:
| Parameters | Volume |
|---|---|
| Nominal diameter (DN) | from 50 to 300 mm (400 mm under special order) |
| Measurement range of gas flow velocity | from 0,15 to 40 m/s |
| Number of channels | 2 |
| Operating gauge pressure | 1,6 MPa; 6,3 MPa, 10 MPa and 16 MPa |
| Limits of permissible relative error,of the Flowmeter, for range,of flow rate | |
| from Qt to Qmax | ± 1% |
| from Qmin to Qt (included) | ± 2% |
| Pulse outputs: - two low-frequency (LF), to 20 Hz; - one high (HF), to 2 кHz; |
Type “Dry Contact” Voltage from 5 V to 28 V, current - up to 20 mA |
| Temperature gas measurement | Resistive,Temperature ensor, Pt100, corresponding to standard DIN EN 60751, class A |
| Pressure measurement of gas | Tensoresistive absolutepressure sensor with temperatue correction |
| Absolute basic error of temperature measurement | ± 0,15°С |
| Derived basic error of pressure measurement | Not more than,±,0,1 % |
| Communication channels | Interface RS-232/RS-485; Data transfer protocol, ModBus RTU; Data rate, upto 115200 bits/s; |
| Power supply | Buil-in lithium battery of capacity 2x19 A*h, (provides operation for 4 years) |
| Optional power supply from an external source | 16 - 24 VDC; current consumption – up to 100 мА |
| Ingress,Protection of casing as per GOST 14254 | IP67 |
| Ambient Temperature | from -30°С to 55°С |
Dependence of critical values of volume flow to meter size
| DN, mm | Dimension type | Value of flow rate, m3/h | |||
|---|---|---|---|---|---|
| Qthreshold | Qmin | Qt | Qmax | ||
| 50 | G160 | 0,2 | 1,0 | 8,0 | 250 |
| 80 | G400 | 0,5 | 2,6 | 20,0 | 650 |
| 100 | G650 | 0,8 | 4,0 | 33,0 | 1000 |
| 150 | G1600 | 2,0 | 10,0 | 80,0 | 2500 |
| 200 | G2500 | 3,4 | 17,0 | 133,0 | 4000 |
| 250 | G4000 | 5,0 | 26,0 | 200,0 | 6500 |
| 300 | G6500 | 8,0 | 40,0 | 325,0 | 10000 |
| 400 | G10000 | 13 | 63,0 | 500,0 | 16000 |
- hourly- for every preceding hour - size of archive 1488 records (62 days);
- daily- for every preceding day - size of archive 730 records;
- power on/off instances - size of archive 600 messages;
- emergency situations - size of archive 1000 messages;
- intervention - changing the adjustment parameters (size of archive 1000 messages).
Installation configurations
Ultrasonic Gas Flow Meters Energoflow GFA-202More products on this category
Services List
-
Reference Turbine Gas Meters EFS-T Reference Turbine Gas Meters EFS-T are intended for installation on reference calibration rigs for calibration and verification of gas meters of any type with air as operating environment.
Reference Turbine Gas Meters EFS-T -
Reference Rotary Gas Meters EFS-R Reference Rotary Gas Meters EFS-R are intended for installation on reference calibration rigs for calibration and verification of gas meters of any type with air as operating environment.
Reference Rotary Gas Meters EFS-R -
Energoflow GFA-202 Energoflow GFA-202 Flow meters can be used as part of metering units of gas distribution points, industrial enterprises and communal service installation.
Energoflow GFA-202 -
Energoflow GFE-211, GFE-212 Ultrasonic gas flow meters Energoflow GFE-211 and GFE-212 are a brilliant example of genial engineering for achieving optimal solution for gas flow measurement in large pipes and in cases where installation of inline meters is technically or commercial not viable.
Energoflow GFE-211, GFE-212 -
Energoflow GFE-201, GFE-202 Energoflow GFE-202 and GFE-201 are state-of-art ultrasonic gas flow meters designed for accurate and reliable measurement of flow velocity, volumetric flow rate and volume of gaseous substances (gases) transported through pipelines in the forward or reverse direction.
Energoflow GFE-201, GFE-202 -
Flow Metering Complexes for Custody Transfer of Natural Gas The complex can be used for reliable measurement of volumetric data of various gaseous media for custody transfer applications,
Flow Metering Complexes for Custody Transfer of Natural Gas -
Flow Meters for High Pressure Energoflow GF-201H, GF-202H ultrasonic gas flow meters are flanged section type flow meters specially designed for measuring flow velocity, volumetric flow rate and volume of gaseous substances (gases) transported through pipelines in the forward or reverse direction at high pressure (up-to 16 Mpa),
Flow Meters for High Pressure -
4-channel Flow Meters for Applications Requiring Enhanced Accuracy Four-channel ultrasonic gas flow meter Energoflow GF- 404 is specially designed for applications where very high accuracy is required, e.g. for custody transfer measurement of natural gas.
4-channel Flow Meters for Applications Requiring Enhanced Accuracy
Downloads
Energoflow Gas Flow Meters Catalog
ALL PRODUCTS & SERVICES
View All Products
View All Services
Company Info
