ARTICLE DETAILS

LHS series Temperature humidity chamber

日期:2020-09-22 02:35
浏览次数:213
摘要: 1.overview This series of products with precise temperature and humidity control system, it is industry research, biotechnology tests provide needed all kinds of environment simulation conditions. Thus can be widely used in medicine, textile, food processing, such as sterility test, stability inspection and material performance of industrial products, product packaging, product life test, etc. 2.the product features: 1. With the function of timing of microcomputer temp

1.overview

This series of products with precise temperature and humidity control system, it is industry research, biotechnology tests provide needed all kinds of environment simulation conditions. Thus can be widely used in medicine, textile, food processing, such as sterility test, stability inspection and material performance of industrial products, product packaging, product life test, etc.


2.the product features:

1. With the function of timing of microcomputer temperature humidity controller display, control temperature wet precise and reliable.

2 use mirror stainless just bladder, half arc corners of easy to clean, adjustable shelf space in the box.

3. USES glass observation window, convenient observation and clear.

4. Equipped with independent limit temperature alarm system, exceed limit temperature automatically interrupted, guarantee the safe operation of the experiment, no accident.

Number 5, temperature, humidity, direct display, microcomputer control temperature and humidity, mirror stainless steel tank, and the corners of circular arc form, baffle plate distance is adjustable, with observation window, with overtemperature, compressors overheating, such as water shortage protection function.

3. technical parameters:

Model

LHS-80SC(H)

LHS-150SC(H)

LHS-250SC(H)

Volume

80

150

250

Temp. range:

5-50

Resolution

0.1

Temperature control volatility

±1

temperature uniformity

±2

Charged with wet range/accuracy

50-95%

Power Supply

2AC  220V  50Hz

Power

Heater:150W

Compressor :162W

Heater:300W

Compressor :180W

Heater:150W

Compressor :180W

Inner demension

400*400*500

550*400*680

600*500*830

PZ - PHWHS - 3 instruction

An overview,

This controller with adaptive control technology in temperature control, temperature can be used to simulate the natural environment (temperature, humidity).

Second, the performance indicators

1, the panel hole size: 257 mmx74mm;

2, temperature measurement range: 0 ~ 60.0 ℃;

3, humidity control range: 0 ~ 99% RH.

4, working time: cycle range 0 to 99, maximum 24 period of working time, every time setting range: 0 ~ 99 hours.

Cycle is set to 0, for continuous working condition;

5, sensors: for PT100 temperature sensor, humidity sensor is 0 ~ 3 v humidity transducer;

6, work environment: the supply voltage: AC187 ~ 264 v (50/60 hz) (rated voltage 220 vac);

Ambient temperature: 0 ~ 40 ℃ (shoulds not be more than 40 ℃);Relative humidity: 40 ~ 93% RH;

7, output contact capacity: (1) heating control SCR 600 vac, 16 a;

(2) compression pattern control relay 220 vac, 30 years;

 (3) lighting (fan) or control relay 220 vac 5 a;

                        (4) humidification control SCR 600 vac, 16 a.

8, model description: suffix T, said with the function of communication.


One, the key function

Section 1. The cycle of several key: click this button can switch to display the current operating cycle or paragraph number, long press the key period 2 s into the state, long press 2 s exit;

2. Set the query button: click on the state of the query, can inquire of the currently running, the setting time is set, the set temperature and humidity, and then click the button to exit.Long press 2 s to enter the key period of a few select state, after select the section number, and then click on state, press the button to enter paragraphs parameter setting in setting state, long press set query 2 s again, exit paragraphs parameter set state (when the cycle is set to 0, and for the first time to 0, is always run the first program);

3. Reduce the key: when setting parameters, click on the value minus one, long press the set value will be reduced;

4. Add button: when setting parameters, click on the set value plus one, long press the key value will increase continuously;

5. Return key: in the condition of paragraphs set parameters, click this button to return to the previous parameter (only switch to the same segment parameters).Have a voice alarm buzzer, press the key can be muted.In running stop state, long press the 4 s can make the controller from the first paragraph re-run;

6. The temperature parameters button: long press the 4 s into the temperature parameter setting state, click this button to set the internal each parameter, then according to the 4 s exit long;

7. The humidity parameters button: long press the 4 s state into the humidity parameter setting, click on the button can be set within the parameters of longer according to the 4 s exit;

8. Lighting button: click this button to control the output of the lighting and close;

9. The power button: click this button can make the controller open work or enter a closed.

●   In the condition of each set, if there are no buttons to press the 30 seconds, the program will automatically quit to normal running state.

 

5. the parameter description
 (1) segmentation parameter Settings:

Long press set query 2 s to enter selection state, section number cycle window shows "cH_ _".Choice of the need to modify, press the button to enter paragraphs parameter selection state parameters setting range is as follows:

Hr: 0 ~ 99 hours;

Temperature: 0 ~ 60 ℃;

Humidity: 0 ~ 99% RH.

(2) temperature parameter setting:

Long press temperature parameters of the 4 s enter a state of internal parameters, input password LC = 3.In the condition of internal parameters, longer according to the 4 s exit, parameters of the code is as follows

Parameter indicating

The parameter name

Parameters function

Range(factory parameters)

AL

Overtemperature alarm

When the PV > SP + AL, refrigerating output.

0.060.0 (1.5)

ct

Compressor startup latency

Compressor time delay time, start time > = cT minutes twice

0 ~ 10(3)Min

Pb

Zero adjustment

Pb = mercury thermometer readings - current temperature measurements

-19.960.0(0)

 

 

 

PK

 

 

 

Full adjustment

When actual temperature deviation, can adjust the parameter value is correct..PK = 1000 * (mercury thermometer reading values - current temperature measuring points)/current temperature measuring points

 

-999999(0)

 

 

 

up

 

 

Heating refrigeration and back to the poor

To heat uP, the parameter to control the compressor in advance, namely the PV > = SP + uP, and the delay time is more than ct, refrigerating output, the output light normally on. Only when the ALM lights flashing.

 

-1.01.0 (0.4)

 

 

dn

 

Cooling refrigeration back to the poor

Cool, this parameter can control the compressor in advance, PV < SP + dn, turn off the refrigeration output..Only when the ALM lights flashing.

 

-1.20.8  (0.3)

 (3) communication parameter setting:

Long press temperature parameters of the 4 s into the state parameters of the communication, enter the password LC = 33.Click on exit, under the two parameters of the code is as follows:

Parameter indicating

The parameter name

Parameters function

Range(factory parameters)

Ad

Correspondence address

From the machine address

18 (1)

 (4) the humidity parameter Settings:

Long press humidity parameter 4 s enter a state of internal parameters, input password LC = 3.In the condition of internal parameters, longer according to the 4 s exit, parameters of the code is as follows:

 

 

Parameter indicating

The parameter name

Parameters function

Range(factory parameters)

rc

Desiccant temperature

Compensation coefficient

 

To compensate the desiccant temperature drop, and the system, according to the factory parameters.

18 (1)

rt

Humidity sensor is fixed

Used to produce the correct sensor error, the temperature measurement value + rt = actual measured values

0.05.0(2.5)

AS

Low emperature protection

When measuring temperature below the AS, humidification and dehumidification.It can realize single temperature control function.

 

060.0(10.0)

 

6. customer detailed operation steps:

Example: equipment need to work ten cycles, each cycle run 2 period, the first paragraph needs to work 12 hours, the temperature control in 30 ℃, humidity control at 60% RH;The second paragraph need 12 hours, the temperature control at 20 ℃, humidity control at 50% RH.

Answer: a cycle means that the controller from the first run to the first N paragraphs (by the customer need to set number, this paragraph to number 2), for a period ending if cycle is M, which is from the first paragraph refers to the controller to N section, from the first paragraph again run into N M so on cycle times, the controller run over.If cycle is set to 0, the controller run continuously.Specific operation is as follows:

Long press the cycle period of several key for 2 seconds into the cycle set state, flashing cycle window, can be through the increase or decrease keys, modify the set cycle as the "10", and then long press this button to exit..Then long press set query 2 seconds into the number of choice set state, set the light.

Cycle window shows: "by increasing the key or the hour window flashing, can reduce the keys will be set to" 2 ". Section number to continue click on the set query, can enter the paragraphs of corresponding parameters of modified state. Periodic window shows the first paragraph "01", hour window blink show the current setting of time, can increase or decrease keys to modify the first time for 12 hours, and then click on set query, flash temperature window, modify the first paragraph to set temperature 30 ℃; clicking set query button, humidity setting window, can increase or decrease keys to modify the first paragraph humidity to 60% RH, press the return key at this time can be returned before setting has set a good parameter setting, if don't need to return, then continue to click on the set query, into the second period of parameter setting, with the second time will be set to 12 hours, temperature is 20 ℃, humidity to 50% RH. When set to the end of the second paragraph after temperature and then click set query key, then circle back to the first paragraph parameter Settings. In setting state, long press set query 2 s can exit.

Controller into the running status, has the fan output, run indicator, the controller according to the parameters set by the user.Runtime cycle instructions window shows the cumulative operation cycle, time USES the countdown, time window display hours, minutes indicates the window, otherwise seconds flicker, temperature indicating window shows the current temperature measurement, humidity indicator window to display the current humidity measurements.When the first time after the operation, program automatically switch to the second working state.Run over, plus one running cycle, cycle in turn.When set operation cycle to cycle, the program will automatically End, time window shows "End", buzzer sing 30 s, heating, cooling and humidifying output shut down.At this time you can long press the return key 4 s restart, or press the power button, the controller into the closed position.

 

Seven, matters needing attention

1.the characteristics of this controller is to control the temperature, again after being basically stable temperature humidity control, so just switched on or after reset temperature, both without humidification and dehumidification, is normal phenomenon, to reach the set temperature, temperature humidification and dehumidification will work.

2. For the use of humidifier, humidifier fog first volume control knob clockwise rotation to the middle place, humidity shoulds not be too large to prevent overshoot, if humidifier through continuous humidification humidity values also amounted to less than 20 minutes (if the general requirements to control within 5% RH, consecutive humidifying 20 minutes also can't get the range of 5% RH), time can only be gradually humidifier fog volume control knob clockwise rotation to maximum. (best again in two steps, first to 3/4, have a downside: no, not again to maximum).Because the size of the quantity of humidification, has great influence on the temperature and humidity control, usually a humidifier humidification volume shoulds not be too big, just enough, and control of low humidity and high humidity had better choose different gear.

3. for matching the heating and cooling power of the box body, generally 250 l chamber, the heating power suggest use 500 w, the refrigeration power suggest choose 180 w;150 l chamber, the heating power suggest use 350 w, the refrigeration power suggest use 140 w.

4. Because the controller itself with the environment temperature test, the controller of the main board should be considered when installing ventilation cooling, if the installation environment poor heat dissipation will lead to poor control effect.

 

Eight, fault handling

If when the temperature sensor, the measured temperature above 60 ℃ or open circuit, temperature indicating window displays "□□□".If the temperature below 5 ℃, the lower temperature indicating window displays "□□□".When the humidity window display value has been the same or greater error, can consider to replace the sensor.

When malfunction measuring WenXin piece, low temperature light flashing, the controller automatically according to the UP and dn control.