Vemmtec Turbine Meter


 


Specification vemmtec IGTM
Flow ranges: 10 to 10000m3/h(actual conditions)
Diameter:   50mm to 400mm(2"-16")
Body length:  CT-meter 3D
IM-meter(short version)
Pressure rating:

PN 10 - PN 100
ANSI 125-ANSI 600
Overrange: 120% of Qmax(for a limited period of time)
Temperature: -10 to 50℃
Ex-certification: EEx ia IIC T4…T6(HF sensors)
Larger sizes and customised: versions for special applications are available on request.

Flow Table
Size
G
Qmax(m3/h)
DN(mm)
(inch)
50
2
40
65
50
2
65
100
80
3
100
160
80
3
160
250
80
3
250
400
100
4
160
250
100
4
250
400
100
4
400
650
150
6
400
650
150
6
650
1000
150
6
1000
1600
200
8
650
1000
200
8
1000
1600
200
8
1600
2500
250
10
1000
1600
250
10
1600
2500
250
10
2500
4000
300
12
1600
2500
300
12
2500
4000
300
12
4000
6500
400
16
2500
4000
400
16
4000
6500
400
16
6500
10000
Sizes upto 600mm (24), G 16000 Qmax 25000 m3/h available please enquire.

Material of Construction

Housing: Ductile iron (GGG40) or steel
Straightening vane: Aluminium
Turbine wheel: Delrin or aluminium
Metering insert and Bearings Block: Aluminium
Bearings, Shaft and Coupling: Stainless steel
Gears: Stainless steel and synthetic material
Counters head and counter plate: Aluminium
 


Features

    Gas Flow Meter with mechanical counter and electronic pulse transmitters
    High Accuracy Custody Transfer (CT) type and economical industrial (lM) applications available
    Standard CT construction passes the OIML R32 (Heavy Swirl Tests)
    Short inlet (minimum 2D) and outlet piping required
    Meets all stringent European guidelines and standards
    To be used for all non-aggressive gasses
    Many options and accessories
    Complete flow computer package available
    vemmtec can provide complete metering packagesd

The vemm tec Gas Turbine Meter is designed to measure the quantity of gas to high accuracy. the special design means that the sensitivity to disturbed flow (e.g. swirl) and the pressure drop are reduced to a minimum.

A wide range of complementary equipment such as PTZ correctors, barriers and meter tubes are also available.

An 8 digit mechanical counter indicates the volume of gas through the meter at operating conditions. Low or high frequency pulse signals can be supplied to a flow computer.

The IGTM-CT Gas Turbine Meter is approved for custody transfer purposes in most European countries.

Custom versions for special applications and increased accuracy are available on request.

Accuracy Custody Transfer (CT) Meter

    Within the limits of the EC directives:
          ±1% for 0.2Qmax to Qmax
          ±2% for Qmin to 0.2Qmax

    Optional improved accuracy limits possible:
          ±0.5% for 0.2Qmax to Qmax
          ±1% for Qmin to 0.2Qmax

    Repeatability:                      0.1%

    Rangeability for 80mm (3" ) and up indicated accuracy limits can be archieved within a range of 1:20 (Qmin = 0.05 Qmax) Optional turn down ratios of 1:30 or 1:50 are available for most models. The turn down ratio also improves at higher operating pressure.

Index Head and Pulse Transmitters

    Index head standard provided with an 8 digit mechanical counter. Pulse signals standard provided:
      Low frequency Reed switch
      High frequency proximity sensor

    Optional within index head
      Second low frequency Reed switch
      Second high frequency proximity sensor

    Optional high frequency proximity sensors available at the body of the meter:
      At the turbine wheel
      At the reference wheel (CT-models of 4" and up)
Initial Verification and Calibration
    Initial verification of a custody transfer meter can be performed at a PTB (German weights and measures) approved test installation. An EC (European Community) seal will be provided and the meter can be used for custody transfer purposes.
    Calibration of both the CT and IM Gas Turbine Meters can also be undertaken at this installation. A calibration certificate will be provided. High Pressure Calibration can also be offered.