Low humidity intelligent temperature and humidity standard chamber is a special verification
equipment for detecting hair temperature and humidity meter, dry and wet bulb thermometer, digital temperature and humidity meter and other kinds of temperature and humidity sensors. The equipment can automatically adjust the humidity in the temperature and humidity verification box by accurate measurement of temperature and humidity sensor and industrial programmable controller control. High control and testing accuracy, can provide continuous, repetitive humidity measurement, suitable for scientific research and product testing.

Products Description
DTLH low humidity intelligent temperature and humidity standard chamber is a special verification equipment for detecting hair temperature and humidity meter, dry and wet bulb thermometer, digital temperature and humidity meter and other kinds of temperature and humidity sensors. The equipment can automatically adjust the humidity in the temperature and humidity verification box by accurate measurement of temperature and humidity sensor and industrial programmable controller control. High control and testing accuracy, can provide continuous, repetitive humidity measurement, suitable for scientific research and product testing.

Advanced technical principles
* Humidity control adopts the principle of moisture occurrence by shunt method, which greatly shortens the time required for stability and improves the verification efficiency compared with the principle of humidity occurrence by double temperature method.
* Temperature control using liquid bath constant temperature plate heating technology, liquid medium heat radiation, temperature more constant, temperature field more uniform
* The unique air circulation design in the measuring chamber ensures no dead angle air flow, and adopts frequency conversion technology to speed the fan to ensure that the internal temperature field is uniform at low speed;
Product intelligence
* Fusion of measurement technology and Internet of things technology to wifi remote control to make measurement easier
* HD touch screen control, multi-touch, greatly improve user experience,
* One-click start, automatic control, shorten the training period for metering personnel
* Timing switch machine, remote switch machine, save time, improve verification efficiency
Excellent quality
* The shell adopts thick plate phosphating, passivation, spray molding, anticorrosion, rust prevention, salt spray resistance;
* SUS304 for internal bile
* High precision sensor, temperature and humidity control with imported high precision platinum resistance Rotronic humidity sensor
Upgraded to Automatic Verification System
* With intelligent image acquisition system, dew point meter and industrial control computer, it can be upgraded to intelligent temperature and humidity meter automatic verification system to realize the automation of verification process, the automatic preservation of records and the automatic generation of reports. The metering personnel are liberated from the reading recording of the temperature and humidity meter, which greatly improves the verification efficiency and reduces the labor cost.

Product Function
* HD touch screen: high resolution capacitive screen, clear display, multi-touch support, in line with customer touch operation habits
* Wifi control: remote setting of temperature and humidity, starting and stopping equipment, reading current temperature and humidity values and fluctuation status of mobile phone / pad
* Status Tip: Real-time calculation and display of temperature and humidity fluctuation, stable state prompt, U disk insertion detection, wifi connection prompt
* Curve display: temperature and humidity curve real-time display, support touch zoom translation operation, one-click screenshot save curve to U disk
* Data record: temperature and humidity data automatically saved to xls format, one key exported to U disk
* Timing boot: with timing boot function, can achieve the equipment before work timing boot, immediately after work, no need to wait.
* Multi-point calibration: support temperature and humidity sensor multi-point calibration, temperature sensor indication can be segmented multi-point correction to ensure consistency with the standard device.
* Segmental control: temperature and humidity are controlled by piecewise PID, fast and stable ," zero "overshoot, fast and stable humidity from 40 RH to 60 RH only 15 minutes
* Fan speed regulation: inner cavity main circulation fan, using frequency conversion speed regulation control, through touch screen, set fan speed;
* Multiple protection alarms: constant temperature tank overheating protection, liquid level alarm; rehydration tank water shortage warning; compressor overheating alarm, start and stop protection function
* Communication expansion: with network interface, wifi interface, USB interface, RS-232 interface, can communicate with the PC, to achieve data reading, system settings.

Product Paramenters:Standard Type Temperature and Humidity Calibration Chamber
Model: DTLH-15AG,DTLH-15BG,TLH-18BG;
Temperature range: 5℃~55℃,-5℃~65℃,-8℃~65℃;
Resolution: 0.01℃;
Humidity range: 10% RH~95% RH (@20℃)(support customization);

Resolution: 0.01%RH;
Temperature fluctuation: ≤±0.1℃（＠15℃、＠20℃、＠30℃;
Temperature uniformity:≤0.3℃（＠15℃、＠20℃、＠30℃）;
Humidity fluctuation:≤±0.8 per cent RH (20℃);
Interior dimensions (mm): 520 × 510 × 520;
Dimensions (height/width/thickness): 1800 × 785 × 965 ;
Weight: 350 kg;
Display: 7-inch HD Touch;
Observation window/operation hole: 3 viewing windows ,2 operating holes;
Shell: Acid pickling spray;
Inner chamber: SUS304 drawing;
Seal: Medical grade silicone;
Glass: 3C certification 5 layers of vacuum high permeability tempered glass;
Power: AC220V±5%50 Hz Peak power 5 KW Typical power 3 KW;

Accessories
Patent & Software copyright certificate
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FAQ
1. Temperature uniformity at 23 C ？
----≤0.25℃（@15℃、23℃、30℃）;
2. Humidity uniformity at 23C with RH 30% and 70% ？
----≤0.5%RH（@5%RH~80%RH）;
3. Temp Speed ; How many minutes it takes from Room temp (24C) to 0 Celcius？
----90min
4. Humidity speed; How many minutes it needed at @23C RH30% to RH40%？
----15min
5. Can you share inspection report that show Temp and Humidity calibration？
----Yes.
6. Electric power; is it single phase or three phase?
----It's single phase,220VAC
7. Touch screen controller, is there any calibration function in case we need do adjustment?
----Yes,it has calibration function,can be adjusted.
 
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