1、 Execution standards

HJ/T 48-1999 Technical Conditions for Smoke and Dust Samplers

GB/T 16157-1996 "Determination of particulate matter and sampling methods for gaseous pollutants in exhaust from stationary sources"

JJG 518-199 "Verification Regulations for Pitot Tubes"

2、 Purpose:

Measure gas flow velocity in pipelines using the pitot tube method. It can be used by departments such as environmental protection, health, labor, safety supervision, military, scientific research, education, etc. for the determination of gas flow rate, flow rate, dynamic pressure, static pressure, temperature and other parameters of various boilers, furnaces and exhaust ducts.

3、 Performance characteristics

1. Handheld measuring instrument, lightweight and portable, easy to operate.

2. Select imported high-precision micro differential pressure sensors with high accuracy and small temperature drift.

3. Dot matrix LCD display with background lighting, suitable for working in low light conditions.

4. Chinese digital display, menu based operation.

5. The power supply is equipped with a rechargeable high-efficiency lithium battery that can be used continuously for more than 70 hours without the need for AC power.

6. Adopting imported high-performance microcontrollers and surface mount installation technology, with high reliability.

7. Automatically calculate parameters such as average gas flow rate, average pressure, and flue gas flow rate.

8. It has automatic zero point correction and software calibration functions to ensure measurement accuracy.

9. Can save 200 sets of measurement data without loss after shutdown.

10. RS232 digital interface can be selected.

4、 Working conditions

1. Working environment: Built in lithium battery 3.7V; or external 5V/700mA DC power supply

2. Environmental temperature: -20 ℃~45 ℃

3. Environmental humidity: 0-85%

4. Atmospheric pressure: 70kPa to 130kPa

5、 Technical indicators