DZF-6050 series laboratory small 1.9 electric vacuum drying oven for pre-extracting

DZF-6050 series laboratory small 1.9 electric vacuum drying oven for pre-extracting

Structure and working principles

Vacuum drying ovens (Hereafter referred as drying oven) are all desk-top type.

Generally speaking, drying oven is made up of a cabinet, an internal bladder (working room), a vacuumizing system, and a temperature-control system.

The cabinet is made up of high-quality sheet with sprayed plastic surface. So the exterior surface is bright in color. Internal bladder is made up of galvanized armor plate or stainless steel armor plate with the shape of semi-arc. The space between the internal bladder and the out shell is filled with super-thin glass wool for insulating heat. In the middle of cabinet door, there is a view window made up of double-layer bulletproof glass. In the inner part beside the door, a thick safety glass and a long column like door pin are used. The distance between them is very convenient to adjust so that the door presses the rubber airproof enclosure after the cabinet is closed. Thus air leakage when vacuumizing is prevented. (Note: The rubber airproof enclosure is not oil-proof.)

The vacuumizing system is made up of vacuum pump, vacuum meter, vacuum valve and air-release valve. According to user’s need, drying (cleaning) filter pot (equipment) or air-inlet valve can be equipped.

Vacuum pump for other model is optional. 

Temperature-control system is made up of sensor (Pt100 platinum resistance), temperature controller, and heater. When receiving output resistance signal (100Ω for 0℃, 0℃) from sensor, temperature controller will display in PV screen real temperature tested from inside of working room. When input signal is less than set value, the power tube (bidirectional silicon controlled rectifier) is open and the heater gets enough electrical power to create heat. Otherwise, there is no power in the power tube and the heater does not heat.

The temperature controller has the special function of adjusting output power with PID, testing and correcting temperature error and timing function. If the power is high than the set value, there will be a warning light and automatic cutting function will be effective. 

Among our products, except for model 6050, model 6050B, model 6051, and model 6053 that are bladder-heating type, heaters of all other drying oven are installed in the shelf.

For model 6090 / model 6210, there are 2 /3 temperature controllers.

Features:

Microprocessor controller
Dual layer tempered glass door for clear observation
Minimum heating time 50% less than traditional vacuum oven

Specifications of the controller

Heating method options:

Technical parameters: