Analysis of Common Troubles and Troubleshooting Methods of ozone aging test chamber

Analysis of Common Troubles and Troubleshooting Methods of ozone aging test chamber:

Q1: During the test, the ozone concentration display value cannot stably control the numerical range, causing either high or low phenomena;

A1: Before leaving the factory, the transmitter must undergo dozens of hours of polarization, and can only leave the factory after being confirmed to be stable. This usually occurs when the transmitter is installed and there is a connection between the transmitter and the box, as long as the transmitter and the box are properly insulated;

Q2: Problem: During the test, the ozone generator was working all the time, and the displayed value kept rising and could not be controlled;

A2: This phenomenon usually occurs because the solid-state output signal is incorrect or the solid-state relay cannot be disconnected

Q3: The secondary meter does not display the ozone concentration value within 30 seconds after startup, and only displays the upper or lower limit;

A3: 1. “The upper limit usually occurs when there is no 4-20mA signal input. Check whether the ozone transmitter has a 24V power supply → 4-20mA output line → whether the connecting wire between the sensor and the main board falls off or is loose;”;

2. The lower limit may be due to the low transmitter zero point, which can be adjusted (zero point adjustment: open the front cover and use a special small screwdriver to clearly observe the ZERO potentiometer and slowly adjust it counterclockwise until the secondary meter displays the value);

Open the front cover of the transmitter and adjust the multimeter to the voltage range to measure the two copper pins above (the zero point voltage should be 40mV). If it is too high or too low, adjust it to 40mV. The adjustment method is as follows: adjust the zero point in 2;

Q4: When performing an ozone test, the ozone display value stays at the value after startup and does not increase;

A4: 1. Check whether there is a set control value. If there is no set control value, it is sufficient;

2. Check whether the ozone generator is working. If not, check whether the solid-state relay has an output, whether the wires are connected incorrectly, and whether the strip hanging relay is working; If the ozone generator is working but does not produce ozone, it is necessary to contact the manufacturer;

A simple method can make the ozone aging test chamber durable:

Generally, it is recommended to place the ozone aging test chamber in a relatively benign temperature environment. Our empirical temperature value is 8 ℃~23 ℃. For laboratories that do not have this condition, appropriate air conditioning must be equipped; It is important to clean the inside and outside of the chamber regularly. After use, it is best to cover the equipment with plastic film to avoid dust intrusion; Keep the environment around the equipment in a dry state and keep the ventilation in the laboratory in good condition at all times;

It is best to control the cleaning of the condenser within three months. For compressors that use air cooling, it is also necessary to regularly inspect the condensing fan and conduct decontamination and dust removal on the condenser to ensure its good ventilation and heat exchange performance; For compressors cooled by water, in addition to ensuring the inlet water pressure and temperature, it is also necessary to ensure the corresponding flow rate, and regularly clean and descale the inside of the condenser to obtain and maintain heat exchange performance; Regularly clean the evaporator, waterways, and humidifiers; It is prohibited to impact the equipment with external forces to avoid damage to internal components; It is prohibited to set a temperature that exceeds the maximum temperature specified for this equipment; When conducting a spray test, pay attention to observing the water level in the water tank and replenish purified water in a timely manner;

Simple analysis of the correct operation method of ozone aging test chamber:

1. Timing setting method for ozone aging test chamber: When setting, you can use the “+” and “-” buttons on the timer panel to set (H: hour, M: minute, S: second). For example, if 5 hours and 30 minutes are set, set “05H30”. After the time is set, turn on the timing switch and press the “ON” button on the power supply. At this time, the device will enter high-temperature and constant temperature operation. After the time expires, the device will automatically cut off the power supply.

2. How to start the ozone test in the ozone aging test chamber: Turn on the green button power supply, adjust the temperature of the equipment to 40 degrees, wait until the temperature in the test chamber is completely stable, then reset the value of the ozone meter to 0, and wait about 20 minutes before turning on the ozone button; Please refer to the instrument instruction manual for detailed instrument setting methods;

3. Ozone dynamic test method: Open both the rotary table button and the stretching button, and adjust the rotation speed as needed. The exhaust button is opened when the ozone is discharged to the outdoor at the end of the test.

4. Alarm temperature setting method: Press the instrument setting key “SET” for about 5 seconds to enter the internal menu of the instrument: AL1 (Alarm 1): Generally, it is AL1=SV+15 ℃. This alarm is only used at high temperatures, and it is not necessary to set low temperatures. Example: If SV is 50 ℃, then AL1 is 65 ℃. ATU (Self Tuning): A self tuning value of 0000 indicates that it is closed, and 0001 indicates that it is open. When the machine is turned on, there is generally no need for self tuning. If it is difficult to achieve a constant set temperature value, then self tuning can be turned on. During the self-tuning process, the temperature in the chamber will fluctuate, which is a normal phenomenon.

What is the relationship between the price and quality of the ozone aging test chamber?

Although price and quality are a pair of contradictions, “good quality and cheap price” is just an idealized desire of people, but the most important requirement of a commodity is that it has use value. First, a commodity must be usable. If it is not any usage, even if it is cheap, it has no significance. Once cheaper equipment is used on site, it can cause numerous failures, which can greatly affect production and bring enormous negative effects to the enterprise.

Ozone test purpose:

Ozone Test Chamber (or called Ozone Aging Chamber and Ozone Aging Test Chamber) is design according to rubber being sensitive characteristic of to ozone, it simulate the environmental to accelerate the rubber aging process by ozone. It compared to different products(test sample) aging result each other according to the same ozone aging test conditions/standards, and get to comparable aging resistance performance.

Tags：OTC-150A