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Ningbo Edesheng Instrument Co., Ltd
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    No. 31 Dongbei Road, Dongqiao Industrial Zone, Haishu District, Ningbo City
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Constant temperature and humidity laboratory
Constant temperature and humidity laboratory
Product details

Product Usage:
The constant temperature and humidity laboratory can provide temperature and humidity environment testing for large parts, semi-finished products, and finished products in the industry. It is mainly composed of a control panel, distribution panel, insulation warehouse board, air supply fan, heater, and freezer combination.
Product features:
Adopting a combination of storage board units, the content area can be enlarged at will, and it is easy to disassemble and assemble. It can be designed according to customer size requirements and coordinated with customer expansion transfer.
The material of the storage board is made of stainless steel and heat-resistant steel plate baked paint, with a sturdy structure, waterproof, and beautiful appearance.
The controller can be connected to a computer, and users can design programs, collect test data and records, call program execution, and remotely control machine power on and off functions on the computer.
When abnormal conditions occur, the controller screen promptly displays the fault situation, cuts off the power switch, and provides troubleshooting methods.
The refrigeration unit adopts imported compressors from Europe and America, and uses environmentally friendly refrigerants. The refrigeration system adopts a binary low-temperature circuit system design, and different compressors are used in different temperature ranges to increase the service life of the equipment.
Programmable controller:
Adopting the Japanese SUNTOW ultra sensitive liquid crystal (LCD) display touch screen, the screen operation is simple and the program editing is easy.
The controller operation interface is available in both Chinese and English, and the operating curve chart can be displayed on the screen.
It has a capacity of 100 sets of programs with 50 999 cycle steps, with a maximum time setting of 99 hours and 59 minutes per step.
There are 10 sets of program strings, each string can connect 6 sets of programs, and up to 5 sets of subroutines can be set in each set of programs for looping. (999 times))
After inputting the data and experimental conditions, the controller has a screen lock function to prevent manual touch and shutdown.

Equipped with P.I.D automatic calculation function, it can immediately correct temperature change conditions, making temperature and humidity control more precise and stable.
Equipped with a communication interface and connection software, it can design programs on a computer, monitor the testing process, and perform functions such as power on/off.
It has a nine point fault information display. If an abnormality occurs during operation, the power supply will be immediately cut off and the cause of the fault will be displayed on the screen in real time.
It can provide a temperature linear DC signal output to the temperature recorder to understand the status of the testing conditions, thereby improving the reliability of the testing.
Refrigeration system:
The freezer adopts imported compressors from Europe and America, and uses environmentally friendly refrigerants (R404R23)
The refrigeration system adopts a two-stage low-temperature refrigeration system design, and different compressors are used for refrigeration in different temperature ranges to increase the service life of the equipment.

By utilizing a multi wing air supply fan for powerful air circulation, any blind spots can be avoided, resulting in even temperature and humidity distribution within the testing area.
The wind cycle adopts a side blowing air return design, with wind pressure and speed that meet the test standards, and can quickly stabilize the temperature of the switch.
Fully independent heating, cooling, and humidification systems can improve efficiency, reduce testing costs, extend lifespan, and lower failure rates.
Technical specifications: National Unified Customer Service Hotline:

Equipment model

EHR-8P(S)-A
(B.C.D.E)

EDR-12P(S)-A
(B.C.D.E)

EHR-20P(S)-A
(B.C.D.E)

EHR-28P(S)-A
(B.C.D.E)

EHR-50P(S)-A
(B.C.D.E)

Test area size
(W×H×Dcm)

180×210×180

270×210×180

470×210×200

450×210×300

600×210×400

External dimensions
(W×H×Dcm)

235×230×200

325×230×200

525×230×220

505×230×320

635×230×420

performance

temperature range

+85℃~-70℃(A: 0℃; B: -20℃; C: -40℃; D: -60℃, E:-70℃)

Humidity range

30%~95% RH

Volatility

≤±0.5℃

Temperature and humidity deviation

Temperature deviation: ± 2.0 ℃; Humidity deviation:±23%RH

heating up time

+25℃~+85℃

≤30min

Cooling time

+25℃~Limit Low Temperature

30min~180min(Different depending on the model)

Material Science

External material

SECCSteel plate+foundation make-up baking varnish

Internal material

SUS#304Stainless steel plate

Thermal insulation material

PUAnd insulation cotton

Temperature and humidity control system

refrigerator

European and American imported fully enclosed or semi enclosed compressors

refrigerant

R134a/R404a/R23

fan

Axial flow fan, side blowing or upward blowing

heater

High performance heater

Humidification system

steam humidification

Dehumidification method

ADPCritical dew point cooling and dehumidification method

Cooling method

Binary cascade refrigeration method (air-cooled or water-cooled))

controller

monitor

Programmable: Japan SUNTOW/UNIQUE/OYO touch screen series; Standard type:RKC、 OYO series

Display Accuracy

SUNTOW/UNIQUE/OYO in Japan: Temperature0.01℃, humidity 0.1% RH; RKC: temperature0. 1℃Humidity 0.1% RH

Operation mode

Program mode, fixed value mode

control mode

Calculus operation PID

INPUT

Platinum resistance PT100 or Swiss Rohatyn temperature and humidity integrated sensor.

Observation window

Multi layer hollow coating heating glass

Other accessories

Test holes (two with a diameter of 50mm or as specified by the customer), explosion-proof lighting fixtures inside the box

Safety device

Overtemperature protection; Leakage protection; Water shortage protection; Humidification system protection;
Compressor overpressure, overload, and overcurrent protection; Fan overload protection; phase-sequence protection

Power Supply

AC 380V(1±10%)V, 50 ± 0.5HZ, three-phase four wire+Protect the ground wire

Select accessories

Temperature and humidity recorder, capable of simultaneously recording temperature and humidity signals

notes

We can customize according to the size requirements of customers to meet their specific needs.
EDR
For a walk-in constant temperature and humidity laboratory; P is programmable,SFor standard type
A
, B,C, D,ERepresentative temperature range (A: 0 ℃; B:-20℃; C: -40℃; D: -60℃;E

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