Gas turbine flowmeter temperature and pressure compensation type

Gas turbine flowmeter temperature and pressure compensation typeWhen measuring online, the density of the medium changes with temperature and pressure. To achieve accurate measurement, it is necessary to simultaneously track and detect the temperature and pressure of the medium, and convert the volume flow rate under different operating conditions into the volume flow rate under standard or agreed conditions.

Due to the integration of temperature, pressure, and flow sensors, this type of flowmeter tracks and detects the temperature and pressure of the medium online, and performs automatic compensation and compression factor correction calculations. Therefore, it has excellent low-pressure and high-pressure measurement performance, and is particularly suitable for the precise measurement of various single-phase gases, such as natural gas. According to the different requirements of users, our company provides turbine flow meters with different precision levels.

1) When the flow meter requires flow pulse signal output, an external power supply with a supply voltage of+24VDC is required.

3) When the flowmeter requires RS485 data communication, a+24VDC power supply needs to be added.

⇒Gas turbine flowmeter temperature and pressure compensation typeMain features:

2) Using high-quality bearings, with low friction resistance and good sealing performance, hand name;

4) The instrument has pulse signal and analog signal output, and can directly achieve centralized data collection and real-time management of computer data through RS485 communication interface or GPRS system;

6) Equipped with real-time data storage function, it can prevent data loss during battery replacement or sudden power failure. In the event of a power outage, internal data can be saved;

8) Explosion proof products have explosion-proof markings ExibIIBT4 and ExibIIBT6.

⇒execution standard

⇒Accuracy level:

Level 1.5: Qmax-0.2max ± 1.5% 0.2 Qmax-min ± 3.0%

⇒ Gas turbine flowmeter temperature and pressure compensation typeUsage conditions:

♦Usage conditions:

c. Relative humidity: 5-95% d. Atmospheric pressure: 86kPa~106Kpa

1. Working power supply

b. Internal GPRS power supply: 1 6.6VDC lithium battery, which can work normally when the battery voltage is between 5.0-6.6V;

d. External power supply (solar) GPRS power supply:+5VDC~+7VDC.

Internal instrument power supply, with an average power consumption of ≤ 1mW, capable of continuous operation for more than five years.

3 pulse output mode

Directly output the raw pulse signal detected by the flow sensor through an amplifier, with a high level ≥ 20V and a low level

2) Revised working condition pulse signal (or standard volume flow rate):

3) Equivalent pulse signal (for IC card controller input):

b. OC output.

4-20mA standard analog current output function

Output format: Two line system

It can be connected to personal computers and PLCs through the internal RS485 standard interface for serial communication. It can display medium pressure, temperature, instantaneous flow rate, cumulative standard flow rate, battery voltage, etc.

⇒Flow meter selection

1) In situations where the flow range is required to be smaller than according to Table 1 and there are strict requirements for the initial flow rate.

3) Suitable for natural gas, city gas, compressed air, nitrogen, etc

⇒Overall dimensions:

Dear user, hello! When installing and using this instrument, you should pay attention to the following:

Note: Any damage to the impeller bearing caused by failure to install a filter is not covered by the warranty.

Note: Any damage to the impeller bearing caused by failure to clean the pipeline or incomplete pipeline cleaning is not covered by the warranty.

♦When using the instrument, the valve should be slowly opened until the pipeline is filled with gas, and then the large valve should be opened to prevent damage to the impeller.

♦When installing sensors, the straight pipe section in front of the instrument should not be less than 20 times the DN, and the straight pipe section behind the instrument should not be less than 10 times the DN.

After sales and warranty

All products supplied by Duoqin Instrument (Shanghai) Co., Ltd.:

Provide free consultation, guidance on installation and debugging services;

Large quantities can provide free on-site guidance for installation and debugging;