Humidity & Temperature sensor - HTU21D
1.Product Description:
HTU21D, the new digital humidity sensor with temperature output of MEAS is about to set new standards in
terms of size and intelligence: Embedded in a reflow solderable Dual Flat No leads (DFN) package of 3 x 3 mm foot print and 0.9 mm height it provides calibrated, linearized signals in digital, I²C format.
HTU21D digital humidity sensors are dedicated humidity and temperature plug and play transducers for OEM applications where reliable and accurate measurements are needed. Direct interface with a micro-controller is made possible with the module humidity and temperature digital outputs. HTU21D digital humidity sensors are low power consumption designed for high volume and cost sensitive applications with tight space constraints.
Every sensor is individually calibrated and tested. Lot identification is printed on the sensor and an electronic identification code is stored on the chip – which can be read out by command. Furthermore, the resolution of HTU21D digital humidity sensor can be changed by command (8/12bit up to 12/14bit for RH/T), low battery can be detected and a checksum improves communication reliability.
With made improvements and the miniaturization of the sensor the performance-to-price ratio has been improved – and eventually, any device should benefit from the cutting edge energy saving operation mode.
2.Main Application:
• Automotive
• Home Appliance
• Medical
• Printers
• Humidifier
• Multimedia: Smartphone, Tablet
3.Main Features:
• Full interchangeability with no calibration required in standard conditions
• Instantaneous desaturation after long periods in saturation phase
• Compatible with automatized assembly processes, including Pb free and reflow processes
• Individual marking for compliance to stringent traceability requirements.
4. PERFORMANCE SPECS :
5. ELECTRICAL AND GENERAL ITEMS :
6. SENSOR PERFORMANCE :
7. RELATIVE HUMIDITY ERROR BUDGET CONDITIONS AT 25° C :
Digital Humidity Sensor with the interface to MCU is I2C HTU21D
Model Number: HTU21D
1.Features:
· DFN type package
· Relative Humidity and Temperature Digital Output, I²C interface
· Fully calibrated
· Lead free sensor, reflow solderable
· Low power consumption
· Fast response time and very low temperature coefficient
2.Description
HTU21D, the new humidity and temperature sensor of MEAS is about to set new standards in terms of size and
intelligence: Embedded in a reflow solderable Dual Flat No leads (DFN) package of 3 x 3mm foot print and 1mm
height it provides calibrated, linearized signals in digital, I²C format.
HTU21D sensors are dedicated humidity and temperature plug and play transducers for OEM applications
where reliable and accurate measurements are needed. Direct interface with a micro-controller is made possible
with the module humidity and temperature digital outputs. HTU21D sensors are low power consumption
designed for high volume and cost sensitive applications with tight space constraints.
Every sensor is individually calibrated and tested. Lot identification is printed on the sensor and an electronic
identification code is stored on the chip – which can be read out by command. Furthermore, the resolution of
HTU21D sensor can be changed by command (8/12bit up to 12/14bit for RH/T), low battery can be detected and
a checksum improves communication reliability.
With made improvements and the miniaturization of the sensor the performance-to-price ratio has been
improved – and eventually, any device should benefit from the cutting edge energy saving operation mode.
3.Description
.Full interchangeability with no calibration required
in standard conditions
· Instantaneous desaturation after long periods in
saturation phase
· Compatible with automatized assembly processes,
including Pb free and reflow processes
. Individual marking for compliance to stringent
traceability requirements
4 APPLICATIONS
· Printers
· Humidifier
· Automotive
· Home Appliance
· Medical
Digital temperature and humidity sensor htu21d pcba
Description
Htu21d pcba, the new humidity and temperature sensor of meas is about to set new standards in terms of size and intelligence: embedded in a reflow solderable dual flat no leads (dfn) package of 3 x 3mm foot print and 1mm height it provides calibrated, linearized signals in digital, i²c format.
Htu21d pcbasensors are dedicated humidity and temperature plug and play transducers for oem applications where reliable and accurate measurements are needed. Direct interface with a micro-controller is made possible with the module humidity and temperature digital outputs. Htu21d pcba sensors are low power consumption designed for high volume and cost sensitive applications with tight space constraints.
Every sensor is individually calibrated and tested. Lot identification is printed on the sensor and an electronic identification code is stored on the chip – which can be read out by command.
Furthermore, the resolution of htu21d pcba sensor can be changed by command (8/12bit up to 12/14bit for rh/t), low battery can be detected and a checksum improves communication reliability.
With made improvements and the miniaturization of the sensor the performance-to-price ratio has beenimproved – and eventually, any device should benefit from the cutting edge energy saving operation mode.
Parameters:
1)storage temperature: -40 to 125ºc
2)supply voltage: 3.8v
3)humidity operating range: 1-100%rh
4)temperature operating range: -40 to 125ºc
5)vdd to gnd:-0.3 to 3.6v
6)digital i/o pins (data/sck) to vdd:-0.3 to vdd+0.3v
7)-10 to +10 ma
Features:
(1)pcba type package
(2)relative humidity and temperature digital output, i2c interface
(3)fully calibrated
(4)lead free sensor, reflow solderable
(5)low power consumption
(6)fast response time and very low temperature coefficient
Temperature Sensor Accessories are essential components that support the accurate, safe, and efficient operation of temperature sensing devices such as RTDs, thermocouples, thermistors, and digital sensors. Designed for industrial, commercial, and laboratory use, these accessories enhance sensor performance, ensure reliable signal transmission, and protect the sensor in harsh environments.
â?? Key Features:
Compatible with RTD, thermocouple (K, J, T, etc.), and digital temperature sensors
Designed for easy installation, calibration, and maintenance
Made from durable materials like brass, stainless steel, aluminum, or plastic
Withstands high temperatures, corrosive media, and vibration
Available in custom thread sizes, cable lengths, and mounting styles
Ensures signal integrity and sensor protection in field conditions
ð??§ Available Accessories Include:
Thermowells â?? Protective sleeves for sensors in high-pressure/temperature environments
Compression Fittings & Adaptors â?? Secure and leak-proof sensor mounting
Terminal Heads & Enclosures â?? Weatherproof and explosion-proof housings
Cable Glands & Bushings â?? Secure wire entries with strain relief
Mounting Brackets & Flanges â?? For stable and accurate sensor placement
Connectors & Extension Cables â?? For signal transmission and modular installation
Ceramic Beads & Insulators â?? For high-temperature applications
ð?? ï¸? Applications:
Industrial automation and process control
Power generation and utility monitoring
Chemical and pharmaceutical manufacturing
Food processing and thermal mapping
Laboratory and scientific instrumentation
The primary use of Ammonium Sulphate is as a fertilizer for alkaline soils. In the soil the ammonium ion is released and forms a small amount of acid, lowering the pH balance of the soil, while contributing essential nitrogen for plant growth. The main disadvantage to the use of Ammonium Sulphate is its low nitrogen content relative to Ammonium Nitrate, which elevates transportation costs.
It is also used as an agricultural spray adjuvant for water soluble insecticides, herbicides, and fungicides. There it functions to bind iron and calcium cations that are present in both well water and plant cells. It is particularly effective as an adjuvant for 2,4-D (amine), glyphosate and glufosinate herbicides.
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Commodity: Ammonium nitrate porous prills
1.Production of granular porous ammonium nitrate for industrial use and agricultural granular ammonium nitrate. Products with low moisture content, not easy to cake; high compressive strength, not easy to break; high oil absorption rate. Ammonium nitrate content is more than 99%, the appearance is white granular crystals, no impurities visible to the naked eye.
2. Purpose:
Explosive material: granular ammonium oil explosive is made by mixing porous ammonium nitrate with raw oil. Its speed can reach more than 3 200 m/s. This explosive has strong explosive power, safe and reliable use, low price, cost saving, and can usually reduce the cost by 20%-40%. At present, this kind of explosive has been widely used in mining, construction, railway and highway construction, agricultural and water conservancy construction and national defense and other fields.
We can supply Acetic Acid Industrial Grade and Food Grade.
Commodity:Acetic acid.
Other name: Glacial acetic acid
Molecular formula CH3COOH
CAS:64-19-7
EC No.200-580-7
Introduction:
Annual capacity of our glacial acetic acid is 350,000.the raw material is methanol.we use a new technical process to produce: Methanol decomposition.
the most important characteristic of this way are as following:
mild oder; high quality--can reach 99.99%min; low cost--30% lower than oil decomposition and ethanol decomposition way.
Specifications:
Apha color:<10
Freezing point: 16
Specific gravity:1.04
Acetid acid: 99.8%
Acetaldehyde: 0.004%
Formic acid: 0.06%
Iron: 0.00004%
Non-Volatile Matter: 0.003%
The heavy metal(As Pb counts): 0.00002%
Focus-6400 butyl tapes are waterproof and insulated tapes with strong adhesion
and adaptation to irregular surfaces. It exhibits excellent performance in
waterproof, sealing and anti-UV to antenna feeder and cable connection
box.
Main Specification
(Customized size is acceptable.) 2mm*40mm*20m * 8.5mm * 8mm * 10mm * 12mm
Main Color - Black
Technical Data
Product Series FOCUS-6400 Series
Application Communication Industry
Elongation 400%
Heat Resistance 90, no flowing within 2h
Low Temperature Flexibility 40, no crack on surface within 24h
Tensile Strength 175KPa
Anti UV non-hardening and no cracks within in 2000h
Corrosivity Non-corrosive to galvanizedsheet, aluminum sheet and coppersheet.
Advantages
Strong adhesion and adaptation to irregular surface. Good compatibility with various cables. Wide application temperature range. Excellent performance in weather resistance, waterproof sealing and anti-aging. Applications
Provide waterproof and sealing protection to communication base station and antenna feeder.
Provide waterproof and sealing protection to cable connection box
Focus-6400 butyl tapes are waterproof and insulated tapes with strong adhesion
and adaptation to irregular surfaces. It exhibits excellent performance in
waterproof, sealing and anti-UV to antenna feeder and cable connection
box.
Main Specification
(Customized size is acceptable.)
2mm*40mm*20m * 8.5mm * 8mm * 10mm * 12mm
Main Color - Black
Technical Data
Product Series FOCUS-6400 Series
Application Communication Industry
Elongation - 400%
Heat Resistance 90, no flowing within 2h
Low Temperature Flexibility Â40, no crack on surface within 24h
Tensile Strength 175KPa
Anti UV non-hardening and no cracks within in 2000h
Corrosivity Non-corrosive to galvanizedsheet, aluminum sheet and coppersheet.
Advantages
Strong adhesion and adaptation to irregular surface.
Good compatibility with various cables.
Wide application temperature range.
Excellent performance in weather resistance, waterproof sealing and anti-aging.
pplications
Provide waterproof and sealing protection to communication base station and antenna feeder.
Provide waterproof and sealing protection to cable connection box
Chemical formula C4H6O5
C.A.S number 004-525-33-1
Formula weight 134.09
Appearance Colourless liquid
Assay Not less than 99.8%
Density 1.25g/cm3(20C/68F)
Application Using for the different beverages:
flavored water
energy drinks
tea drinks
juice till 100%
Mechanism of efficiency of DMDC DMDC can permeate through the cell membrane, and block the metabolism through reacting with the enzymes of microorganism, then achieve the purpose of sterilization. Even in very low additive amount, DMDC can effectively kill typical spoilage bacteria in beverage, and not affect the taste, flavor and color of the beverage. Furthermore, it could be rapidly and completely hydrolyzed to carbon dioxide and methanol, which are the natural ingredients of juice.
Package Gauga: 4KG/20KG
Storage conditions In optimal storage conditions (storage temperature: 20C-30C), the storage period is one year
Focus-6500 butyl tapes has good performance in waterproofing and sealing, non-hardening, weather resistance, strong adhesion, adaptation and anti-aging .
Technical Data
Product Series FOCUS-6500 Series
Application Home Decoration Industry
Elongation 500%
Heat Resistance 90, no flowing within 2h
Low Temperature Flexibility 40, no crack on surface within 24h
Peel Strength 22N/cm
Tensile Strength 210KPa
Anti UV non-hardening and no cracks within in 2000h
Corrosivity Non-corrosive to galvanizedsheet, aluminum sheet and coppersheet
Advantages
Smooth and Delicate.
Excellent Adaptation.
Greene nvironmental protection.
Non-toxic tasteless.
Good performance in waterproofing and sealing.
Best quality with outstanding service life.
Applications
Focus-6500 butyl tapes are widely used in bathrooms, kitchen, home decorations, office areas and other home applications, for its good
waterproof/mildew proof /airtight and environmental property.
Adopting unique production technology, Focus- 6300 buytl tapes are mainly made of butyl rubber supplemented by other auxiliaries and fillers, with the superior high polymer materials. With its strong adhesion property and air-tight
property, our waterproof sealing butyl tapes are environmental and solvent-free. Main Specification (Customized demand sare acceptable.)
6mm*8m
8mm*6m
10mm*4.57m
Main Color - black
Technical Data
Product Series FOCUS-6300 Series
Application Automotive Industry
Elongation 500%
Heat Resistance 90, no flowing within 2h
Low Temperature Flexibility 40, no crack on surface within 24h Peel Strength 23N/cm
Tensile Strength 230KPa
Anti UV non-hardening and no cracks within in 2000h
Corrosivity Non-corrosive to galvanized sheet, aluminum sheet and coppersheet.
Advantages
Strong adhesion, high tensile strength, excellent elasticity and extensibility. It can fully accommodate to the surface that it attached to
Excellent performance in non-corrosive, weather resistance and
adaptation.
Applications
Provide waterproof
protection to car doors waterproof membrane. Provide waterproof and
sealing protection to the battery of new energy
automobile.
Other waterproof applications on cars and new energy cars
Focus-6200 products are kind of non-hardening and self-adhesive waterproof sealing butyl tapes. The materials are weathering resistance and fully accommodate to the surface that it attached to, with effective life up to 20 years.
Main Specification
(Customized size is acceptable.)
2mm thickness * 20mm width * 20mm roll
length 2mm thickness * 30mm width *20mm roll length
Main Color - black, grey, white
Technical Data
Product Series FOCUS-6200 Series
Application Construction Industry
Elongation - 500%
Heat Resistance 90, no flowing within 2h
Low Temperature Flexibility 40, no crack on surface within 24h
Peel Strength 25N/cm
Tensile Strength 250KPa
Anti UV non-hardening and no cracks within in 2000h
Corrosivity Non-corrosive to galvanizedsheet, aluminum sheet and coppersheet
Advantages
* Never hardening, maintain good waterproofing property with weathering resistance performance.
* Excellent performance in waterproofing and sealing.
* Good anti-aging performance effective life up to 20years.
* Easy to apply.
Applications
* Provide waterproof and sealing protection forsteel
structure construction.
* Provide waterproof and sealing protection for door joints, window joints,roofs
and air-ducts. Provide waterproof and sealing protection for sunshine rooms, light plate rooms and thermostatic chamber.
* Provide repair function for leaks on surfaces of metal/plastic/glass/concrete.
Commodity: Calcium chloride
Molecular formula CaCl2
H.S code 28272000
Product feature
Calcium chloride is an inorganic salt, which exists as solid or liquid. Solid calcium chloride is a white, crystal substance in the form of flake, granule, pellet or powder. With different crystallized water contents, it can be dihydrate or anhydrous.
Liquid calcium chloride is a colorless, clear solution. As calcium chloride has such properties as quick dissolving, exothermic ability, attracting moisture from the air and surroundings, dissolving at very low temperature,
Specifications:
Analysis Item Standard
Calcium chloride (CaCl2) 74%min,77% min,94%min
Total Chlorinated Alkali: (NaCl) 5.0%max
Magnesium Chloride(MgCl2) 0.5%max
Insoluble matter in water 0.25%max
Calcium Sulfate (CaSO4): 0.2%max
Ferric Oxide (Fe2O3) 0.025%max
Heavy Metal as Cu., Pb., Cd., Cr., Hg., As 0.005%max
Application
Mainly used in drying, melting snow for airport express and street, concrete desiccant and concreting fast, removing dust and oil industry.
Exporting Packing :Plastic woven bag with PE ,25kg/50kg/1000kgs net weight or 25kg x 40 bags into one big bag or 40 bags on a pallet with shrink-wrapped
Means of transportation :in containers or by bulk vessel with large quantity
South almonds, almonds in China called almonds. South almonds are also called sweet almonds, slightly sweet, which is also a way to distinguish between almond and northern almonds. First divided north and south almonds have so few say.
North almond
Naturally is the northern production of almonds, and also called bitter almonds.
Main features -
1, bitter, must be soaked in water for 3 days to remove bitterness.
2, bitter almonds in the bitter taste of the process of almonds will be a lot of loss, so no almond fragrance.
3, bitter almonds have micro-toxicity (brewing when the need for high temperature hot water brewing, to poison).
4, therapeutic effect and sweet almond the same.
5, almond oil content of about 49%, ground into powder after the powder is relatively wet.
6, due to bitter taste, not many people eat, so bitter almond raw material prices are relatively low.
Focus-6100 butyl tapes are mainly made of butyl rubber with excellent performance in waterproofing and sealing.
Main Specification
(Customized size is acceptable.) 3.0mm thickness
* 12mm width *15m roll length
2.5mm thickness * 8mm width * 15m roll length
2 mm thickness * 15mm width * 20m roll length
2.5 mm thickness * 8mm width * 20m roll length
Main Color
black, grey, white
Technical Data
Product Series FOCUS-6100
Application Composite Materials Industry
Elongation 500%
Heat Resistance 90, no flowing within 2h
Low Temperature Flexibility 40, no crack on surface within 24h
Peel Strength 23N/cm
Tensile Strength 220KPa
Anti UV non-hardening and no cracks within in 2000h
Corrosivity Non-corrosive to galvanizedsheet, aluminum sheet and coppersheet.
Advantages
Strong adhesion.
Wide application temperature range.
Excellent performance in waterproofing and sealing.
Applications
* During the production of vacuum extraction process for wind mill blade, it has excellent sealing property between vacuum bags and molds. During the production of vacuum extraction processfor fiberglass, it has excellent
sealing property between vacuum bags and molds.
* During the production of vacuum extraction process for cabin cover, it has excellent sealing property between vacuum bags and molds.
* As auxiliary materials, our Focus-6100 series are widely used in the production of wind mill blade, fiberglass, cabin cover, car tail bracket, automotive engine cover, yacht.
* Our products have excellent sealing property between vacuum bags and mold during the vacuum extraction process.
1,Name: Sodium nitrite
Molecular formula: NaNO2
Formula weght:69.00
2Property: (1) ordinary sodium nitrite: white little crystals or light yellow
 (2) dry powder sodium nitrate: white crystal,non-caking, showing loose status.
Density:2.168. No odor, slightly salty. It is liable to deliquesce, dissolved in water,soluble in liquid ammonia,slightly soluble in ethanol and glycerin,Melting Point:271. Decomposition temperature is 320. It has oxidability and also has reducibility. It will slowly be oxidized into sodium nitrate in atmosphere, it can form nitrogen compound with nitrilo at low temperatures.
3Usage:It has been widely used in making nitro-compound and azo dye, mordant of textile dyeing, bleaching agent, metal heat finishing agent, cement early strength agent, and deicing agent etc.
Note: The product should be stored in a cool, dry place to prevent it from moisture, heat and sunlight. This product can not be mixed with strong reductant, inflammable and explosive materials, food, feed and additives. â?¢ This product is toxic and should be properly kept and can not be eaten.
4 Specification: (Technical Standards:GB2367-2006)
Item Unit Molten salt G High G First G Qualified G Dry powder G
Assay % 99.3 99.0 98.5 98.0 98.5
Sodium nitrate % 0.6 0.80 1.00 1.90 0.80
Chlorides % 0.03 0.10 0.17 -- 0.1
Water insolubles % 0.02 0.05 0.06 0.10 0.06
Moisture % 1.0 1.4 2.0 2.5 0.2
Loose degree -- -- -- -- 95
5,Package: net 50kg net each in plasic woven inner plasic bag, or according to customers requirement.
Hot eye Onion Peeling Machine
Automaitc onion peeling machine with onion root cutting in-one-machine
1 The whole process of onion from feeding, peeling, peeling, root cutting, output and other processes is automated and unmanned, which can save a lot of labor costs.
2 Peel by layers, either more or less. The equipment is designed with a cortex controller, which can be peeled as required. Only one layer of skin can be peeled, or two or three layers of skin can be removed.
3 The peeling is clean and effective. The peeled scallions are clean and good in appearance.
4 The root cutting part is equipped with an onion size recognition mechanism, and the size of the cutting amount can be adjusted randomly to avoid the disadvantage of cutting large onions into small ones and small ones into large ones.
5 Small size, high yield. The equipment design strives to reduce the volume on the premise of increasing the output, so as to apply to various application scenarios such as large, medium and small enterprises and small family workshops.
Molasses Turnkey Project Alcohol/Ethanol Plant
We professional manufacture of ethanol alcohol equipment ,DDGS ,equipment ,vine gare equipment in China. The material can be
corn(maize) ,wheat,potato,cassava,molasses,beetroot,or any other material which contains starch or sugar .we sell our products to more than 20 countries all over the world. Now our main products are as follow :
1.Turnkey ethanol /alcohol plant project which can produce 95% -96% food grade alcohol,medical alcohol,reagent grade anhydrous ethanol/alcohol or 99.8% fuel grade anhydrous ethanol .Output can be from 1000LPD to 2million LPD .
2.DDGS protein feed equipment ,feed drying equipment .
3.Waste water environmental process equipment
4.Design and manufacture ethanol/alcohol equipment according to customers inquired or drawing .
1. The fruit and vegetable grader is suitable for grading all kinds of round and oval fruits and vegetables. The conveyor belt has a small fruit drop, and the grading process will not cause secondary damage to the fruit
2. All parts in contact with the fruit are thickened and soft wrapped, and the grading process will not damage the fruit. The grading size can be adjusted at will
3. It is made of stainless steel, with high hardness and no deformation, and the equipment is solid and durable. At the same time, it is equipped with a large fruit tray (you can choose to load on one side of the machine or on the top of the machine), which can pick out bad fruits. One machine can be used for many purposes.
4. The number and size of grading can be adjusted at will.
27029 Low Cost Humidity And Temperature Sensor Htu21D Suppliers
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