New product explosion-proof in-line zirconia probe ZO-300FB

New product explosion-proof in-line zirconia probe ZO-300FB ◆ The core component of ZO-300FB zirconia analyzer - zirconia head has small internal resistance and fast response speed. ◆ The zirconia element adopts stress reduction design, which improves the seismic resistance and mechanical strength of the element and reduces the possibility of fracture; ◆ The explosion-proof design of the junction box is solid and durable, and can achieve dustproof effect at the same time; ◆ The surface of zirconia electrode is treated by special process, which can improve the measurement sensitivity, service life and corrosion resistance on the original basis; Although the zirconia probe shell is made of stainless steel, the internal part is made of ceramic components, which is easy to break and will cause the probe to be scrapped. Therefore, please handle it with care during installation To external force impact. The internal diameter of zirconia probe is 700 °; The high temperature of can not be used in the environment with combustible gas, otherwise it will cause safety problems and low measurement indication, so the probe The upper limit of service temperature is 700 ℃ 1、 Important tips (installation inspection steps) 1. Connect the wiring between the probe and the instrument: oxygen potential, thermocouple, heating, a total of 6 wires. (Do not connect to power supply 220V) 2. Measure with the resistance range (200 Ω) of the digital multimeter: Oxygen potential terminal, the value should be infinite Thermocouple terminal, the value should be between 3 Ω - 5 Ω Heating terminal, the value should be between 50 Ω and 60 Ω If the value is incorrect, check whether the wiring is faulty 3. After the wiring is correct, connect the 220V power supply and power on for heating. After half an hour, the temperature is heated to 700 ℃, and the instrument indicates the current oxygen content. 4. Measure the thermocouple mv voltage with DC voltage range (200mv) The measured value should be a positive signal Note: The positive probe is connected to the positive terminal, and the negative probe is connected to the negative terminal. The multimeter should indicate a positive signal. If there is a negative signal, the positive and negative poles should be connected inversely. Remember not to connect inversely 5. Using DC voltage range (200mv) for online measurement, the thermocouple mv voltage should be about 28mv. Measure the oxygen potential mv voltage online, and note that the positive probe is connected to the positive terminal and the negative meter The pen is connected to the negative terminal, and the multimeter should indicate a positive signal. If it indicates a negative signal, please change the positive and negative terminal wiring, because when the oxygen content is 5%, the mv voltage should be at the left of positive 30mv Right, if the wire is connected reversely, the indication of oxygen content will be more than 25%. Remember not to touch the two heating terminals during power-on measurement, otherwise the circuit board will be burnt.