The glow wire test is to test the stability of electronic and electrical products when they are working. The glow wire itself is actually a fixed-size resistance wire ring. When testing, it should be electrically heated to the specified temperature, so that the top of the glow wire contacts the sample to meet the standard requirement time, and then observe and measure its state. The test range depends on the specific test procedure.
Preparation before use
1、The instrument is placed in ventilation equipment room (or special ventilation in a small laboratory), in order to test after waste gas discharge in a timely manner)
2、The two weights form a complete set with thin wire two pulleys at left by the supporting plate (through the corresponding holes) hanging at the bottom of the supporting plate, the other end around below red part of the small screws
3、According to the requirements of standard to make and clamp samples
4、To determine the experiments location
a．Press the "left" button, when the glow wire head comes into contact with the red arrow loosening the "left" key part; Fixed a try in below red arrow part, make a good contact with hot wire head to try
b．Adjust the test heat depth of 7 mm. Adjust the proximity switches, lights, and fixed the induction switch of the position
c．Press the "right" button; make the car right, the right automatically stop after touching the limit
Operating procedures:
1, the operation before the preparation
2, be sure to read the using instructions, and follow the instructions step, followed by operation;
3, do not use non-original accessories, so as to avoid danger;
4, glow wire test machine should be put in the room that have the oil ventilation equipment (or with a special ventilation hood in a small laboratory), in order to expel the exhaust after the test.
5, the two matching weights with copper wire (connected to the sample rack) by the left side of the two pulleys (through the corresponding hole) hanging under the bracket plate.
6, according to the standard requirements of interest and clamping samples.
7, close to the adjustment of the switch
A. The nut that is fixed to the switch is loosened and moved left and right;
B. Press the "left button" car automatically forward, when the sample contact with the hot wire, the hand close the switch, so that the car stopped before the fixed and close the switch.
C. Press the "Heating" button to adjust the current adjustment knob. According to the requirements of the sample, adjust the appropriate current value, while the temperature is required to meet the test requirements of the required temperature.
When the test piece touches the glowing wire head, the limit electromagnet is released and the 1N weight can only be moved forward by 7mm.
When the experiment is finished, eject the heating button and then turn the current adjustment knob to the minimum.
