Overhaul experience in constant temperature and humidity test chambers

Constant temperature and humidity test chamber is a common environmental test equipment, although its coverage rate is second only to the oven, and with the customer's pursuit of the quality of machinery and equipment, today's constant temperature and humidity test chamber is relatively convenient and fast in practice, but whether it is cheap, or expensive machine and equipment maintenance is very complicated, which causes customers not to immediately repair and maintain machinery and equipment is very easy to accumulate common faults, maintenance safety accidents are high
。 The common faults that are very easy to occur in the constant temperature and humidity test chamber are the common faults of the environmental humidity, and there are many manuscript subnets for the common faults of the environmental humidity like that, and they are all vague
.
Let's share with you the constant temperature and humidity test chamber, which is a very common fault of ambient humidity
.
Such as in the constant temperature and humidity test chamber of the actual operation of the dashboard set temperature of 60 degrees and ambient humidity of 85%, in the storage tank water resources in the state of sufficient water resources to run the machine equipment, once after a period of time the machine equipment can all normal heating up to 60 degrees, but the ambient humidity only shows information 3% or 5% up and down, and the heating furnace is also very hot, the wet area ball controller is all normal, the dashboard and solids can all be normal output, matching the cup of a lot of water can all normally supply the heating furnace, There is no alarm for the superheat protection device, the humidifier uses a digital multimeter to measure the channel, the thermistor is all normal, and there is an AC220V working voltage on both sides of the humidifier tube, but the steam port of the heating furnace means that there is no vapor out
.
This is because the water in the must be pure du te condition can produce an electrical conductor to connect the originally burned humidifier tube to each other to produce a control loop, so this causes the humidifier tube to burn off but can also be hot and boil the water of the heating furnace, but can not be boiled to cause steam
。 In fact, the simple method of this common failure is to use a clamp multimeter to measure the current size of the humidifier tube in operation, and in the case of the output power and operating voltage of the humidifier tube that is known, it is checked according to the measured current and the calculated current, for example, the humidifier tube is AC220V, 2KW specification model, which can calculate that the current current is 10A when it is working at
full output power.
When the current is measured to be more serious at the clock can be distinguished that the humidifier tube is burned off, without feeling that the water in the heating furnace is hot, it is considered that the humidifier tube is normal, and go to other common fault points
.
Although the name of this common fault is very simple, but this type of common fault is very rare, because when the humidifier tube or heating tube is short-circuited after burning, it has long lost the working ability of the conductor is not easy to cause heat generation, so in the purely accidental situation outside of the other chemical modified conductive to connect it on, the humidifier tube repaired part of the heating effect
.