1. Overview

The refrigeration constant temperature bath is a high-precision self-control thermometer verification device. , high temperature control accuracy, using imported fully enclosed compressor refrigeration system, ">PID regulation law realizes automatic temperature control, compact structure and convenient operation. It is suitable for measurement, biochemical, petroleum, meteorological, energy, environmental protection, medicine and other departments and manufacturers of thermometers, thermostats and other manufacturers to test physical parameters, and can also provide constant temperature sources for other experimental research work.

2. Main technical indicators

Third, use use Say Ming

This device is equipped with a high-precision original temperature regulator, which needs to be handled by a special person, strictly in accordance with the following requirements

Execute.

3.1 Preparations:

1. Before starting the machine, carefully check whether the components are in good condition, whether the wiring is loose, and connect the box reliably

Ground, whether the approved power supply matches the specified power supply of the device;

2. For new equipment, close the discharge valve, connect a hose to the water outlet, and insert a liquid storage container at the other end, then

Add the working medium to the tank until it overflows; the equipment should check the liquid in the constant temperature tank during use

surface height, when the liquid level is insufficient, the working medium should be supplemented until it overflows;

3. Turn the shaft of the stirring motor by hand, and the shaft should rotate flexibly.

3.2 Order of Operation:

1. Press the power button "Start", the power is turned on, and the instrument is powered on.

2. If the control temperature is below 30℃, turn on the "refrigeration" and "temperature control" switches. “thermostatic” switch

When it is turned off, the refrigeration system enters the large refrigeration working state, and the temperature of the tank drops rapidly.

When it is close to the set temperature, turn on the “constant temperature” switch to reach a constant temperature state. If the temperature in the tank is lower than

When the temperature is below -25°C, you also need to turn on the "thermostatic" switch to make the bath temperature drop to the setting at a slower speed

Set the temperature and enter a constant temperature state.

4. When the working temperature is higher than the room temperature +15℃, the refrigeration system does not need to work, "refrigeration", "constant

wen” switches are all turned off, and the rest of the operations are still performed in the original order.

5. Change the setting value: click

key, the starting digits in the SV window are flashing, then press

and other keys, you can get the temperature setting value you need. After setting, click again

key.

6. Other parameters on the temperature controller have been adjusted at the factory and do not need to be adjusted again. NM-RTS30 Refrigeration Thermostat Instruction Manual

3.3 downtime:

1. Turn off the "refrigeration", "thermostatic" and "temperature control" switches. (The refrigeration system stops working)

2. Turn off the power.

3. Open the liquid release valve and release the working medium