Elevating water bath pots are widely used in drying, concentration, distillation, impregnation of chemical reagents, impregnation of drugs and biological agents. They can also be used for constant temperature heating and other temperature tests in water baths. They are tools for education and scientific research in biology, genetics, viruses, aquaculture, environmental protection, medicine, health, biochemistry laboratories, and analysis laboratories.

1. Instructions for using a lifting water bath pot

1. The constant temperature water bath should be placed on a fixed platform. First, clamp the rubber hose of the drainage port, and then inject clean water into the water bath box (to shorten the heating time, hot water can also be injected).

2. Turn on the power, the red indicator light that shows OFF will light up. Rotate the temperature adjustment knob to the set temperature (clockwise heating, counterclockwise cooling), and the water will start to be heated. The indicator light will turn on; When the temperature rises to the set temperature, the indicator light OFF lights up and the water begins to be kept at a constant temperature.

3. After the water bath is kept at a constant temperature, place the container containing the item to be kept at a constant temperature in the water bath to begin the process.

4. To ensure the effect of constant temperature during constant temperature, the contact area between the constant temperature container and the box can be sealed tightly with cardboard. The constant temperature items in the constant temperature container should be lower than the constant temperature water bath surface of the water bath.

5. After use, remove the thermostat, turn off the power, and drain the water from the box. And keep a record of the use of the instrument.

Caution: Do not dry the water bath, and do not use it as a sand table.

2. Precautions for lifting water bath pot

1. The inside and outside of the box should be kept clean regularly.

2. The shell of the constant temperature water bath must be effectively grounded.

3. Do not turn on the power before adding water to prevent the heating wire of the electric heating tube from burning out.

4. Do not open the right side differential board unless necessary for safety reasons.

5. If the indicator light is not on, turn off the power first, unplug the plug and open the right side plug board. If the fuse or indicator light bulb is damaged, it can be replaced with the same specifications.

6. If the temperature control fails, it indicates that the sensor on the controller is malfunctioning. After replacement, it can be used.

7. After using the constant temperature water bath, the power should be turned off.

3. Common faults and solutions of lifting water bath pot

1. The display is normal, the settings are normal, and heating is not possible. Solution to the problem: Connect the power supply, turn on the power switch, adjust the set temperature to be higher than the actual measured temperature, check if the temperature controller has an output indication. If there is, measure if there is voltage input to the heating tube. If there is, the heating tube is broken and can be replaced. If there is no voltage input to the heating tube, it is mostly due to relay failure. If the temperature controller does not have voltage output indication, it is recommended to replace the temperature controller.

2. The temperature controller displays LLL or 999 (parameters may vary depending on the manufacturer). This fault is caused by a temperature sensor open circuit or short circuit. Replace the sensor.

3. The temperature is not controlled, and the relay is damaged or the sensor is damp.

4. Daily maintenance of lifting water bath pot

1. Clean the instrument immediately after each use. Drain the water from the water bath, use a brush to gently remove any coarse debris from the water bath, and clean the pot. Wipe the inner and outer surfaces of the water bath with a soft cloth, and then wipe dry with a cleaning cloth.

2. The inner surface of the equipment should be free of water droplets, and the outer surface of the equipment should be bright, clean, and free of stains.

3. When using a water bath, it must be reliably grounded and water must not overflow into the control box.

4. Do not leave water in the water bath or keep the water level below the electric heating tube to prevent it from bursting or damaging.

5. Conduct monthly maintenance checks on the instruments and promptly fill out maintenance records.

5. Calibration of lifting water bath pot

One environmental conditions

Environmental temperature: (15~35) ℃

Relative humidity: not exceeding 85%

Other conditions: There should be no strong vibrations or corrosive gases around the water bath, and other cold and heat sources should be avoided. In practical work, environmental conditions should also meet the requirements for normal use of measurement standards.

II Temperature measurement standard and supporting equipment

Temperature measurement equipment

Measurement range: (0~100) ℃;

Resolution value or resolution not exceeding 0.1 ℃;

Other measuring devices that meet the requirements can also be used, where the expanded uncertainty U (k=2) of the temperature measuring device should not exceed 1/3 of the absolute value of the temperature uniformity and temperature fluctuation of the calibrated water bath

III calibration project

1. Temperature deviation, temperature fluctuation, temperature uniformity

(Calibration Specification: Temperature Performance Testing Specification for Liquid Constant Temperature Experimental Equipment JJF 2019)

2. Appearance inspection

The appearance and structure of the water bath should be intact, with complete accessories and spare parts;

The nameplate should have the product name, specifications, factory number, manufacturer, power supply voltage, and temperature control range;

After filling the inner tank with water, there should be no water leakage, and the outlet should not be blocked or leaking;

The pointer or digital thermostat can adjust the temperature normally, and the temperature control system works normally.

4 Preparation before calibration

1. Before calibration, the power supply of the electrical measuring equipment must be turned on for preheating, and the preheating time should be at least 15 minutes or meet the corresponding requirements of the electrical measuring equipment user manual

2. According to the user manual or customer experimental requirements, keep the electric constant temperature water bath in normal working condition and ensure that the liquid level in the working area is at the specified position.