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TBQ gas turbine flowmeter

    Low gas
    Low city gas
    Low compressed air
    Alkanes with inert gas industry
    Imported instruments dedicated precision bearing, high accuracy, good stability, the condition of use within five years from the gas.
    Elaborate design of flow channel structure, to avoid the air flow between the bearing, improves the medium adaptability of the turbine flowmeter.
    Unique design of backstepping structure and seal structure to ensure the bearing long-term reliable operation.
    Flow meter can be rotated 180 °, the installation is simple to use convenient.
    Design has a good performance of rectifier rectifier, straight pipe before and after the request is very low (or 2 dn, before or after 1 dn).
    Main performance index has reached the international advanced level, meet ISO9951 standards.
    Using micro power consumption of new and high technology, by working both internal and external power supply, the battery can work continuously for five years.
    Through the RS485 interface of network communication system, easy to realize automation management.

　　TBQ type gas turbine flowmeter for without mechanical counter, its working principle is that when the gas flow into the timing, first with special structure of the rectifier and accelerate, under the action of fluid, the turbine to overcome the friction resistance moment and torque began to turn.When the torque balance, speed stability, the speed of the turbine is proportional to the gas flow, and through the transmission of plate rotating magnet on periodically change the magnetic resistance sensor, thus the sensor output is proportional to the fluid pulse signal;TBQ directly can display the working flow, such as selection of temperature and pressure compensation function, can be converted to standard state flow condition of flowmeter, flow meter using powerful new microprocessor, operation of high precision, reliable performance, small power consumption, the main performance indexes of products reach the international advanced level, is the chemical industry, electric power, llurgy, industrial and civilian gas and city gas, such as gas-fired boiler metering and ideal gas trade measuring instrument.
Technical parameters：

执行标准

封闭式管道中气体流量的测量-气体涡轮流量计（GB/T8940-2003）

检测技术

采用新型旋转检测技术，直接从涡轮取出高频信号

仪表口径

20、25、40、50、65、80、100、125、150、200、250、300

精度等级

±1.5%、±1.0%、±0.75%（需特制）

量程比

1:10； 1:20； 1:30

直管段要求

前≥2DN，后≥1DN

 

仪表材质

表体：304不锈钢

叶轮：优质铝合金

转换器：铸铝

 

 

使用条件

介质温度：-20C°~+80°C

环境温度：-30C°~+65°C

相对湿度： 5%  ~   90%

大气压力： 86kpa  ~ 106kpa

 

工作电源

A.外电源：+24VDC±15%，适用于4~20mA输出、脉冲输出、RS485

B.内电源：1组3.6V10AH锂电池，当电压低于2.0时出现欠压指示

整机功耗

A.外电源：≤1W

B.内电源：平均功耗≤1W，可以连续工作三年以上

仪表显示

液晶显示，瞬时流量，累计流量，带温压补偿的可显示温度和压力

信号输出功能

脉冲信号、4~20mA、控制信号

通讯输出功能

RS485通讯

信号线接口

内螺纹M20×1.5

防爆等级

Exd = 2 \* ROMAN \* MERGEFORMAT IIBT6  或  Exia = 2 \* ROMAN \* MERGEFORMAT IICT6

防护等级

IP65

Flow range：

公称通径

（mm）

标准量程

 (m3/h)

扩展量程    (m3/h)

 

常规耐压等级(Mpa)

特制高压等级 (Mpa)

安装方式

DN20

A

2.5-25

B

4-40

1.6

2.5/4.0

法兰

DN25

A

2.5-25

B

4-40

1.6

2.5/4.0

法兰（螺纹）

DN32

A

5-50

B

6-60

1.6

2.5/4.0

法兰

DN40

A

5-50

B

6-60

1.6

2.5/4.0

法兰（螺纹）

DN50

A

6-65

C

5-70

1.6

2.5/4.0

法兰

B

10-100

D

8-100

法兰

DN65

A

15-200

B

10-200

1.6

2.5/4.0

法兰

DN80

A

13-250

C

10-160

1.6

2.5/4.0

法兰

B

20-400

法兰

DN100

A

20-400

C

13-250

1.6

2.5

法兰

B

32-650

法兰

DN125

A

25-700

B

20-800

1.6

2.5

法兰

DN150

A

32-650

C

80-1600

1.6

2.5

法兰

B

50-1000

法兰

DN200

A

80-1600

C

50-1000

1.6

 

法兰

B

130-2500

 

法兰

DN250

A

130-2500

C

80-1600

1.6

 

法兰

B

200-4000

 

法兰

DN300

A

250-4000

B

130-2500

1.6

 

法兰

C

320-6500

 

法兰

Selection coding：TBQ - 口径 - 流量 - 类型 - 压力 - 精度

口径

                    DN20 ~ DN300

流量

  A （见上表）    

    B （见上表）

   C（见上表）

  D（见上表）

仪表类型

1、+24V供电，脉冲输出，无显示

2、+24V供电，

4~20mA输出，无显示

3、电池供电，无输出，有显示

 

4、+24V供电，4~20mA输出，有显示

5、+24V供电，4~20mA/RS485输出，有显示，带补偿

6、+24V供电，4~20mA/RS48输出，有显示，无补偿

7、+24V供电，4~20mA输出，有显示，无补偿

压力

     1.6   

        2.5

             4.0

精度

     1.0

        1.5

Selection, for example: TBQ - 100 - B - 3-0.8/1.6-1.5
Explanation:Gas turbine flowmeter, caliber DN100, flow 32-650 m3 / h, batteries, no output, the scene, according to gas pressure 0.8 mpa, nominal pressure 1.6 mpa, the accuracy of 1.5 on the Richter scale are unlikely
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