Product parameters
Jili series temperature and humidity meter is a kind of temperature and humidity instrument designed for measuring indoor and outdoor environmental temperature and humidity values. It is manufactured by high-quality technology, with rigorous workmanship and elegant appearance. Highlighted quality, more compatible with modern home decoration.
I. Product Characteristics
Mirror - high transparency arc plastic glass, transparent and bright, wide scale range for viewing comfort
Pointer - using precise dynamic balance arrow pointer structure, clear and easy to distinguish
Table Plate - Using silk printing technology to print scale and graphics on the whole PVC dial, clear and without duplication
Machine core - standard machine core, stable, accurate, earthquake-resistant and durable, the measurement Bureau passed the test accuracy.
Environmentally friendly ABS plastic shell with fine touch in die-casting shape
Outer Ring-Environmental ABS Plastics and Outer Shell Seal Molding Technology as a whole coincide
Packaging - using environmental protection corrugated paper materials to design packaging boxes, exquisite details of materials
II. Performance Parameters-Usage Mode
TH108 Series Outward Size: 75mm (Diameter) X25mm (Thickness)
Temperature range: -30-50C, measurement accuracy (error): +2 C
The range of humidity is 0-100% RH, the measurement error is (+5%) RH when the range of humidity is 40% RH-70% RH, and the other humidity range error is (+7%) RH.
Net weight of product: 48G
Usage: wall hanging, suspension or vertical type
III Material Description
TH109 ABS case outer ring, PVC dial, aluminium alloy pointer, pure copper fastener, plastic transparent glass
IV Scope of Application
This product can be widely used in modern family rooms, offices, shopping malls, hotels, restaurants, schools, factories, warehouses, garden, greenhouse nurseries, animal husbandry and many other places. This product can be used as a reference for healthy life and can not be used as a measuring instrument.
V Notes
This product is specially designed for measuring indoor temperature and humidity. Please do not put it outside the measuring scale to avoid affecting the measuring accuracy.
Please place the product in a well ventilated place to ensure that it accurately reflects the ambient temperature and humidity.
This product can't enter water, can't use corrosive solvent to wipe, and avoid being shocked and shocked.
The core components of this product are imported mechanical induction components, without adding batteries.
VI Warm Tips
Because the air in the package is not circulating, when it is taken out and used, the value of the product can not reflect the actual situation in time. It can be kept at constant temperature for half an hour.
Inside parts of unstable parts, shaking will produce a slight sound, which is a normal phenomenon.
_Common problems
1. Does the newly purchased thermometer need to be adjusted?
This product has been strictly and accurately calibrated when it leaves the factory. Normally, it can be used normally without any further calibration. However, due to transportation vibration, the reading may be deviated. If the displayed reading is doubtful and the error within the valid indication range is larger than the technical index value, the reference can be observed in a windless environment (about 30 minutes) and adjusted after confirmation.2. How to adjust the hygrometer?
Cover a wet towel on the back of the hygrometer or wrap it up for about 30 minutes. The hygrometer should show a humidity reading of 95% RH. If the pointer fails to point to 95% RH, please use a screwdriver of suitable size and rotate around the corresponding humidity adjustment hole on the back until the pointer points to 95% RH.
3. How to adjust the thermometer?
With a confirmed and accurate thermometer as a reference and a screwdriver of suitable size, the temperature adjustment holes on the back are rotated around and adjusted until the pointer points to the same reading.
4. What should we pay attention to in the process of using thermometer and hygrometer?
The Thermohygrometer should be installed in a well ventilated place to avoid hanging on the wall directly exposed to sunlight, air outlet of air conditioner and other places. The Thermohygrometer should not be installed in corrosive gas environment.
5. Why does it feel that the thermometer does not work?
What's the reason why you can't see the change of the pointer when you buy the thermohygrometer? Is it bad? In fact, it is not. The reason is that the change of temperature and humidity is a slow process and will not change significantly in a short time. To know if the pointer is working effectively, we can blow the air through the air vent, or take the hair dryer to blow around the Thermohygrometer or inside the air vent, and observe the change of the pointer, then we can know whether the instrument is working properly or not. After a period of time, it will return to the normal temperature and humidity monitored indoors and outdoors.
6. Why does the temperature and humidity shown by the Thermohygrometer differ from the local weather forecast?
The temperature of the weather forecast is not the real temperature of the space you measure. Because weather forecast temperature data is based on a ventilation louver with a temperature tester 1.5 meters from the ground. The temperature in weather forecast refers to the air temperature in the natural state under the interference of various human and other natural factors, which is significantly different from the space temperature measured on the spot by using a thermohygrometer.
7. Why do you feel so cold that the temperature measured by the Thermohygrometer is not as low as expected?
The temperature that people perceive is called somatosensory temperature, which is mainly affected by four factors. Simply put, somatosensory temperature equals the sum of temperature, solar radiation and humidity, and subtracts the correction of wind speed. The temperature measured by Thermohygrometer is only an important reference for somatosensory temperature. The indoor environmental comfort standard can refer to the humidity color block area of the thermometer.
8. Why does the temperature value displayed by the thermometer differ from that displayed on the air-conditioning screen?
The temperature shown on the air conditioner is the temperature of the air outlet of the air conditioner. Simply speaking, it is the indoor temperature you set up in the hope of eventually reaching. In order to reduce the room temperature to the set temperature in the fastest time when the air conditioner is in normal operation, the cold air will continue to blow out. The closer the air outlet is, the colder the air temperature is, and the uneven distribution of indoor temperature is. In addition, the normal operation of the room temperature sensor in the air conditioner also affects the accuracy of the signal sent to the air conditioner. Therefore, it is not easy to equate the temperature set by the air conditioner with the temperature measured in real time in the room.
9. Introduction to the Principle of Temperature Measurement with Pointer Thermometer and Humidimeter
The pointer Thermohygrometer works on the principle that two different metals expand differently when the temperature changes. The main component is a multi-layer metal sheet consisting of two or more metal sheets laminated together. In order to improve the sensitivity of temperature measurement, metal sheets are usually made into spiral coils. When the temperature of multi-layer metal sheet changes, the expansion or shrinkage of each layer of metal varies, making the spiral roll up or loosen. Because one end of the spiral coil is fixed and the other end is connected with a freely rotating pointer, the pointer can indicate the temperature on a circular scale when the bimetal sheet senses the temperature change.
_Daily range of basic temperature and humidity
Temperature:
The optimum temperature for grain storage is 8-15 C
18-25 C, the best indoor temperature
The optimum temperature of bathing water is 35-38 C
40-45 degrees Celsius, Best Temperature of Foot Washing Water Before Bedtime
The optimum temperature of boiling water for tea-making at 70-80 C
Humidity:
40-70% RH, living environment
40-55% RH, the most favorable environment for disease prevention and treatment
40-60% RH, Book and Cultural Relics Preservation Environment
45-60% RH, computer and communication equipment storage environment
40-60% RH, cotton and wool textiles stored
50-60% RH, storage of dairy products
50-60% RH, candy and snacks
50-70% RH for storage of vegetables and fruits
50-70% RH, grain storage
IX Warm Tips
Because the air in the package is not circulating, when it is taken out and used, the value of the product can not reflect the actual situation in time. It can be kept at constant temperature for half an hour.
Inside parts of unstable parts, shaking will produce a slight sound, which is a normal phenomenon.
Calibration inaccurate or damaged due to severe vibration, please contact the dealer or manufacturer.
Shenzhen Gelida Plastic Products Co., Ltd.
Business Manager: Mr. Wu
Tel: 86-755-13713557227
E-mail: 13713557227@163.com
Zip code: 518110
Standard number: Q/JLD 001-2019
Address: Building C, De Ai Industrial Zone, 445 Dalang South Road, Longhua District, Shenzhen City, Guangdong Province, China
