Weather Instruments Dealers in Kolkata

• Accurate monitoring of surrounding Temperature and %RH to decide the corresponding fermentation residence time: %RH can be easily controlled as per preset %RH values through auto controller (optional)
• Provision for Upper and Lower limit setting of %RH: %RH measuring range up to 99% and accuracy around 98%

Present practice it is well accepted fact that relative humidity plays very important role during entire tea manufacturing at all processing zones. At present, tea planters are mainly dependent on conventional dry bulb & wet bulb thermometers and based on difference between dry bulb and wet bulb thermometers they derive the % rh from standard psychometric table. But it is very difficult to get the correct % rh since it is not possible to see the exact difference between dry bulb and wet bulb temperature in decimals and it is prone to get the erroneous %rh values resulting in taking incorrect decisions. To overcome aforesaid problem stesalit introduces the humidity management system which monitors the dry & wet bulb temperature digitally and display the % rh instantly following the standard psychometric chart. System overview microcontroller based humidity management system senses the dry & wet temperatures of air through a highly accurate intelligent state-of-art sensor and directly computes the %rh as per the embedded psychometric logic inside. The single indicator & controller module digitally displays the current %rh and the dry bulb temperature of the surrounding air. The humidity management system has in-built facilities to set the lower and upper limits for the desired %rh, along with incorporated audio-visual annunciation control mechanism in case of any variation from the pre-set % rh limits. The control output signals can also be used to automatically activate de-activate any attached electro-mechanical devices in the installed air-humidification unit to maintain the desired %rh within the preset limits.

We are offering temperature measurement the setup is designed to study 1 different types of temperature sensors for characteristics and time constants. 2 seebeck effect 3 temperature indicator and its calibration 4 temperature transmitter and its calibration 5 compensating cable, thermocouple connector

• Brand Name: Extech
• Model No.: HT200

Extech’s pocket-sized Heat Index Psychrometer Pen easily monitors Heat Index during hot humid days to prevent heat stroke during outdoor activities, sporting events or, indoor workplace. Its pen-sized design makes it convenient to fit into your pocket and carry it wherever you go. Complete with CR2032 battery.     Features:   Built-in multiparameter sensor measures Heat Index, Wet Bulb Globe Temperature (WBGT), Humidity, Ambient Temperature, Temperature, Dew Point and Wet BulbUser Programmable Heat Index/WBGT alarmMIn/Max/AverageData Hold, Auto Power Off with disableComplete with CR2032 battery

Over 30 fascinating activities all about weather and climate. Kit includes a real wind speed indicator. Build your own barometer, weather vane, rain gauge and hydrometer. Observe the weather traits and see how they'll affect tomorrow's weather! Make a rainbow, produce clouds, lightning, rain and even a thunderstorm

We offer microprocessor based humidity instruments based on both classical DRY-WET principle (with highest possible degree of accuracy of ±1%) & capacitive sensors .We also offer wall mounted, panel mounted Humidity indicators , Controllers, data loggers, Transmitters etc. The Humidity instruments have their applications in pharmaceutical industry, leather industry, Research Institute, Tea & Coffee industry etc.

This psychrometer has long been used as the standard wet & dry bulb psychrometer capable of measuring highly accurate humidity. Humidity of air can be precisely measured by this instrument. Two insulated type thermometers, as wet and dry bulbs, are located. By spring-wound, air movement is forced past the bulbs at a rate of about 3.5m/s to 6 m/s to ensure proper ventilation.

Special Features : Microprocessor Based State of Art Technology. Higher Resolution 4 digit Display. Programming & Calibration from Front Keyboard. Lead wire Compensation for RTD input. Ambient compensation for TC Input. Retransmission Current Output (Optional). Set Point Adjustable Throughout the Range. Change-over Contact for each Set Point.

• Accuracy: : + 2 %
• Voltage: 240 VAC ( + 10 % Voltage tolerance)
• Weight: 2.5 kg (TX or reflector head plus Aluminium Air Purge Body) 1.3 kg (OI wall mounted/ OI panel mounted)  
• Path length: 0.5-10 m (Flange to flange Separation)
• Range: 0-1000 mg/m3 or in mg/Nm3 (Higher available on request)
• Resolution: 0.1 mg/m3
• Damping: 1-60 sec
• Nominal Current Consumption: 500 mA
• Air supply volume flow: 50-200 L/min
• Cable & Wire: Operator Interface/TRX interconnection: Screened multi core
• Analog Output           : 4-20 mA (Isolated and scalable)
• Digital Relay Contacts: 2 contacts
• Heads ingress protection : IP 65
• OI protection                 : Wall mounted (IP 65) & Panel Mounted (IP 64)
• Operating Humidity       : Upto 100 % (Air humidity around heads)
• Gas temperature            : +600 degree C

• Application: Renewable Energy Monitoring | Solar Meteorological Station | Wireless Weather Monitoring Station etc
• Usage: Industrial
• Brand Name: RSK

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