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TBQS Quantometer

TBQS Quantometer

The TBQS turbine gas flowmeter is an economical gas flow measurement instrument, widely used in industrial gas flow monitoring and metering control applications. This product is a new generation turbine flowmeter equipped with a mechanical counter, designed for accurate measurement of gas flow. It features a modular design concept and adopts multiple innovative technologies to achieve high accuracy, superior reliability, and low maintenance costs. The product’s main performance parameters have reached advanced international standards, making it an ideal instrument for gas flow measurement and detection in industries such as petroleum, chemical engineering, power generation, and metallurgy for natural gas and other gases.

Main Advantages

  • Lubrication
    Optional manual ball bearing lubrication via oil pump
  • Operation
    Maintenance-free with permanent lubrication
  • Mounting
    Horizontal or vertical
  • Rangeability
    Up to 1:20

Operating Principle

The turbine gas flowmeter is a velocity-based metering instrument. It passes through the rectifier where it is straightened and accelerated, driving the turbine to overcome mechanical resistance and begin rotating. When the torque reaches equilibrium, the rotational speed stabilizes. Within a certain flow range, the rotational speed of the turbine is proportional to the gas flow velocity. The turbine’s rotation is transmitted via the decelerating transmission mechanism and magnetic coupling connector to a mechanical counter reading unit mounted outside the housing, thus realizing counting and the output of the flow pulse signal (LF or HF).

Technical Specifications

Model TBQM Turbine Gas Flowmeter
Size G65 to G4000
Nominal Diameter DN50(2”) to DN300(12”)
Pressure Rating PN16 up to PN160
ANSI Class 150 up to ANSI Class 600 (Class 900, non MID)
Rangeability 20:1 or higher depending on the operating pressure
Temperature Ranges
Gas Temperature -20℃ ~ +60℃, (MID) -10℃ ~ +55℃
Ambient Temperature -30℃ ~ +60℃, (MID) -10℃ ~ +55℃
Storage Temperature -20℃ ~ +50℃
Housing Material Aluminum/Carbon Steel
Max. Operating Pressure 160 bar, according to housing specification
 

 

Accuracy

 Qmax ≤ Q ≤ Qt : ± 2.0%
Qt ≤ Q ≤ Qmax : ± 1.0%
Rangeability                                                    Qt

0.20 Qmax

0.15  Qmax

1 : 50                                                              0.10  Qmax
Meter Index
Number of Indexes 1
Number of Digit Rollers per Index 8
Meter Index Head Synthetic material (standard), aluminum (optional)
Protection Class IP67
Sensor

Pulse Output

 HF Sensor                                                      ATEX II 1 G Ex ia IIC T4 Ga

ATEX II 1 G Ex ia IIC T4 Ga
LF Pulse Generators 1 LF (Reed contact), 1 AT (Anti-tampering), add an additional  LF as an option
Contact Type Closing contact (Normally open)
Max. Contact Load 10 W
Max. Switching Voltage 50V DC / 200V DC
Max. Switching Current 0.1 A / 0.5A
Resistance in Series with Reed Contact 100Ω
Fmax 500Hz
HF Pulse Generators 1 HF (Inductive sensor, compliant with NAMUR specifications)
Supply Voltage 8.2V DC (Internal resistance of 1kΩ)
Current Consumption (Sensor Covered) <1 mA
Current Consumption (Sensor Free) >2.1 mA

Dimensions

DN(mm) Pressure Class Housing Dimensions
D(mm) H(mm) C(mm) L(mm)
50 PN 16 52 163 75 150
50 PN 25,PN 40,PN 63,Class 150,Class 300 52 168 75 150
50 Class 600 52 185 75 150
80 PN 16 81 170 101 240
80 PN 25,PN 40,PN 63,Class 150,Class 300 81 189 101 240
80 Class 600 81 204 101 240
100 PN 16 101 180 120 300
100 PN 25,PN 40,PN 63,Class 150,Class 300,Class 600 101 205 120 300
150 PN 16,PN 25,PN 40,PN 63,Class 150,Class 300 151 200 180 450
150 Class 600 151 234 180 450
200 PN 16,PN 25,PN 40,PN 63,Class 150,Class 300,Class 600 201 240 255 600
250 PN 16,PN 25,PN 40,PN 63,Class 150,Class 300,Class 600 251 267 250 750
300 PN 16,PN 25,PN 40,PN 63,Class 150,Class 300,Class 600 301 293 308 900

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