ZFJ-1 Self Rescuer Negative Pressure Air Tightness Tester

Introduction of ZFJ-1 Self Rescuer Negative Pressure Air Tightness Tester

ZFJ-1 Self Rescuer Negative Pressure Air Tightness Tester is a device used to check self-rescuer air tightness, self-rescuer negative pressure airtight tester detecting from the host and the dryer composition, in line with GB / T8160-1987 1.4.2.2 negative pressure method , 

Reliable performance, accurate detection, intuitive, easy to install and operate.
ZFJ-1 Self Rescuer Negative Pressure Air Tightness Tester is mainly used for self-rescuer manufacturers and users of products manufactured and daily air tightness check. The use of vacuum principle of self-rescuer air tightness of the device, its internal micro-pump, direct suction to produce negative pressure to work.

Working Principle OF ZFJ-1 Self Rescuer Negative Pressure Air Tightness Tester

ZFJ-1 Self Rescuer Negative Pressure Air Tightness Tester consists of vacuum glass dryer and the host of two parts. Check the self-rescuer, the first vacuum glass dryer placed 4-5 intact self-rescuer, and then add water, water must be to diffuse self-rescuer rubber seal (ie, the combination of the upper and lower shell) is appropriate; then Start the host; micro-vacuum pump within the host in a few seconds time can be vacuum glass dryer within the air pumping finished, so that its internal vacuum (that is, negative pressure) state. At this point if the air-tight performance of the self-rescuer bad (both air self-rescuer), because of its tight shell tightness, the gas within the natural shell through the water to take out bubbles; Bubble of the self-rescuer is a problem, poor quality of the self-rescuer, so as to achieve the purpose of checking self-rescuer performance.

Operation of ZFJ-1 Self Rescuer Negative Pressure Air Tightness Tester

1, turn on the host of the "power" switch.
2, remove the cover of the vacuum glass dryer, the 4-5 sets of self-help device to be seized into the dryer and cover the lid.
3, press the "solenoid valve" switch, press the "pump" switch, vacuum pump that is vacuum glass dryer vacuum, a few seconds after the stop "pump" switch, followed by stop "solenoid valve" switch.
4, by loosening the glass vacuum dryer on the three-way valve, the negative pressure display value is maintained at -13KPa range, observed in the dryer element bubble generation, observation time is 1 minute; in this 1 minute time, the dryer If there is no bubble in the generated, that is to prove that all the self-examination in the seizure of qualified; if the bubble, the proof of the self-air bubbles out of the device failed.
5, loose glass vacuum dryer on the three-way valve, the pressure is displayed as zero, the three-way valve and then placed, open the lid, remove the self-rescuer and check the wipe clean, which completed a self-rescuer check cycle .

Technical parameters of ZFJ-1 Self Rescuer Negative Pressure Air Tightness Tester

Measuring range: -0.1 ~ 0Mpa;
Accuracy class: 2.5;
Power: 90W;
Power supply voltage: 220V / 50Hz;
Dimensions: 320 * 200 * 300;
Negative pressure measurement upper limit: -60KPa;
Work detection of negative pressure: -1334OPa- -6000Pa;
Pressure gauge maximum measured value: -0.1MPa;
Power supply voltage: AC220 ± 10% V;
Vacuum glass dryer: φ300 mm.

Pictures of ZFJ-1 Self Rescuer Negative Pressure Air Tightness Tester