Automatic constant temperature and constant pressure permeameter (installation and use method) - Huaqiang Electronic Network

Probe domestic switch needle KG-300K needle head diameter is 3.0mm normally open switch needle

100V, 250mA, surface mount, high speed switching diode

Heng Jiaxing AO3401

Automatic constant temperature and constant pressure permeameter

Installation and use

1. Pressure setting: press the set button “Back” after power on, press the shift button “

>"

Press the adjustment keys “+” and “--” again to adjust the value. After adjusting, press the setting button “Back” to save. After adjusting the lower limit value, press the set key to exit.

2. The peak value of the pressure peak (the peak value is kept at the maximum pressure when the test piece is broken): long press and hold for 3 seconds to enter the setting state. When the time window is displayed as B, set to 0, which means the pressure peak is maintained. ,

It can be set to any time unit, minute, and the lower limit is increased to 0.1MPa.

3, time clear: re-do the experiment, continue to press the "--" button does not release, first display the time value, 10 seconds after the time can start from 0 minutes, "!" can not be mistakenly pressed.

4. Time review: press “—” key to change the pressure to hour, the upper limit is minute, and the lower limit is second. Return to the pressure display after 30 seconds,

5. Time setting, long press and save for 3 seconds to enter the setting state. When the time window is displayed as T, the pressure increment time can be set. The unit is minutes.

3. Zero adjustment: If there is no pressure after starting, if it does not return to zero, press once and it can be set to zero. Do not press the clear button when there is pressure, and then zero after releasing.

4, open the water injection

valve

Add pure water. When the water tank is full, start the pressurization and open the pressure regulating valve to let the water flow into the high pressure chamber chassis to just overflow.

After the experiment is completed, open the high-pressure tank drain valve, and clean the surface of the instrument with anti-rust grease. If the equipment is not used for a long time, all the water inside the system will be released to prevent frost cracking.

Soil permeability coefficient

Analyzer diagram

1. Sample container 2. Measuring cup 3. Integrated control system 4. Temperature control instrument 5. Power indicator 6. Power switch 7. Flow regulating switch 8. Pressurizing pump switch 9. Refrigerating switch 10. Heating switch 11. Sample 1 pressure supply valve 12. sample 2 pressure supply valve 13. pressure relief valve 14. water injection valve 15. constant temperature water tank 16. pressure pump 17. refrigeration unit