Gas generation/treatment of cabinet type steam evaporation mixer

1.1 Overview

A water vapor evaporation mixer is a device that can produce a mixture of water vapor and gas. It can generate a gas mixture of water vapor and another gas in any ratio, and the flow rate and temperature of this gas can be continuously adjusted. Suitable for models such as CEM3002, CEM3020, and CEM3080.

1.2 Working principle

1.2.1 Host partThe host consists of one gas flow metering module, one water vapor metering and evaporation module, one gas preheating mixer, and a system control platform. Water is accurately metered by a metering pump and enters the evaporator for evaporation. Another carrier gas is measured by a mass flow meter and mixed thoroughly with water vapor in a preheating mixer before being output. By adjusting the flow rate of the carrier gas and the flow rate of the water pump, the water content in the mixed gas and the total gas flow rate can be adjusted. By preheating the mixer, the output of the mixer can be adjusted and controlled.

1.2.2 Customized Accessories: Host and Application Device Heat Tracing ConnectionWhen the host is far away from the application device, a set of heat tracing connection pipelines can be customized. It includes 3 temperature controls: 1 electric heat tracing pipeline temperature control and 2 pipe joint heat tracing temperature control. The heat tracing pipeline is integrally formed, and the pipe joint heat tracing adopts a heating belt that is easy to disassemble.

1.3 Parameter indicators

1.4 Packaging List

1.5 Equipment interface

Front view

rear view

2. Installation and operation2.1 Counting Components

Please count according to the order, mainly including the host, power cord (CEM3020/CEM3002), etc

2.2 Installing Power Supply

The CEM3002/CEM3020 power cord has a 16A plug. Prepare a socket to connect to the on-site 220V power supply and insert the plug into the socket.The CEM3080 power cord is a 6mm2 three core cable (5.5kW). Please connect the power supply with the help of an on-site electrician.

2.3 Installation of Water Source

CEM3080: The water bucket is placed outside the main unit. Simply insert the inlet pipe on the main unit into the water bucket.CEM3020: Open the door at the bottom of the front of the host and place a 20L water bucket under the host. Simply insert the inlet pipe into the water bucket.CEM3002: Open the door at the bottom of the front of the host and place a ≤ 20L water bucket or reagent bottle at the bottom of the host. Simply insert the inlet pipe into the water bucket/bottle.

2.4 Installing Air Source

Simply plug the external air supply pipe into the quick connector of the air inlet.

2.5 Installing heat tracing pipes between the host and application devices

We need to make an appointment with an engineer to determine the layout of the heat tracing pipes on site, measure the required length, customize the heat tracing pipes, and then install them on site.

Attention1. Deionized water should be used as the water source2. Do not forcefully pull the inlet pipe!3. The thermocouple connection wire for pipe joint heat tracing and temperature measurement should be arranged properly. If it is accidentally pulled loose during use, it may cause abnormal temperature measurement and burn out the heat tracing strip

2.6 Quick Operation

2.6.1 Turn on the device power(1) Turn on the main control switch on the front panel(2) Press the system switch button to activate the touch screen main page

2.6.2 Preheating equipment(1) Start evaporator: Click the evaporator "Settings" button on the main page to enter the evaporator settings page; Set SV to the desired temperature.The higher the temperature of SV, the stronger the evaporation ability of the evaporator. For CEM3020 and CEM3080, setting SV to 220 ℃ and 180 ℃ can achieve the maximum designed evaporation capacity.

(2) Start the heat tracing device: Click on the "Settings" button of the heat tracing device on the main page to enter the heat tracing settings page. The temperature for heat tracing is usually set to 120 ℃. If there are no attachments between the host and the application device, the following three heat tracing settings can be omitted.

(3) Start the preheating mixer: Click the "Settings" button on the main page to enter the preheating mixer settings interface. Set the SV of the outlet gas temperature control section to the desired target temperature. The over temperature protection setting is usually already set at the factory.

(4) On the front panel of the host, turn on the heating switch.

2.6.3 Occurrence of mixed gases

After all three components have reached the preheating temperature:(1) Click the "Settings" button on the main page of the mass flowmeter to enter the mass flowmeter settings page, where you can adjust the carrier gas flow rate.

(2) Click the "Settings" button on the main page to enter the inlet pump settings interface and adjust the inlet pump flow rate. After setting the inlet flow rate, return to the main page and click the start/stop button of the inlet pump to generate steam.

AttentionDo not arbitrarily change the setting parameters of PLC or control instruments!If modification is required, please contact the manufacturer or refer to the PLC or control instrument manual.

3. Equipment maintenance and troubleshooting3.1 Replacement of Equipment Accessories

(1) Disconnect the power cord.(2) Wait for the device to cool down for half an hour(3) Replace accessory parts according to installation steps

3.2 Check the airtightness of the system

The equipment has undergone an air tightness check before leaving the factory. If there is a risk of airtightness in the future, follow the steps below to check:(1) Seal all possible gas leaks at the inlet and outlet of the device, except for the inlet, with rubber pads(2) Connect the external air source and adjust the air pressure to 1 bar(3) Spray soapy water on the structural parts of each system pipeline and check for any bubbles blown out by the soapy water.If there is:, it indicates that there is a leak in the equipment and the card sleeve needs to be locked or replaced. If there is no:, it indicates that the air tightness of the equipment is intact

AttentionBe sure to pay attention to gas safety when using high-pressure gas cylindersWhen spraying with soapy water, be sure to take measures to absorb water and dry at the bottom of the leak detection area.

3.3 Long term non use disposal of equipment

(1) Place the equipment in a preheated state, run the water pump empty to remove residual water, and blow the carrier gas for 30 minutes to prevent water accumulation in the internal pipeline(2) Disconnect the inlet pipe from the water source and prevent dust/mold from entering the inlet pipe and blocking the metering pump(3) Cut off the power and gas supply

3.4 Equipment unable to generate steam

(1) Possible reason: Heating switch not turned onSolution: Immediately stop the water pump and check if the heating switch is turned on(2) Possible reason: The equipment is equipped with a dual plunger pump and during its first use, the pump runs idleSolution: It is necessary to use a syringe to suction at the outlet of the pump until water comes out of the outlet; Other types of pumps do not have this issue(3) Possible cause: Damage to the evaporatorSolution: Check if the evaporator temperature can reach 150 ℃. If not, report for repair

3.5 There are droplets at the equipment outlet

(1) Possible reasons: The evaporator is damaged or not yet preheatedSolution: Immediately stop the water pump, check if the evaporator temperature is normal, or wait or report for repair(2) Possible reason: Exceeding the rated evaporation capacity of the evaporatorSolution: Adjust the water pump flow to within the rated flow range of the device(3) Possible reasons: Preheating mixer/heat tracing damaged or not yet preheated properlySolution: Check if the temperature of the component is normal, or wait or report for repair

3.6 Insufficient gas flow

(1) Possible reason: The device switch and module switch are not turned on.Solution: Turn on all switches.(2) Possible reason: The inlet pump did not startSolution: Turn on the power and run the inlet pump(3) Possible cause: Equipment vaporization module malfunctionSolution: Check and replace the vaporization module(4) Possible cause: Blockage in the air circuitSolution: Check the blocked air path and replace it(5) Possible reason: Insufficient gas sourceSolution: Check the air source