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Colour & Luminance Analysers

Here you will find colour analysers for both colour and luminance for measuring surface colours of products. Our professional colour analysers include the RGB series. With these colour analysers you can read the difference in colour in L d*a*b*, L*C*H* and Delta E*ab according to your requirements.The most popular model of colour meter in our range of products is the RGB. Aside from being easy to use and economical, our colour analysers are used for determining the location of a colour on the XYZ axis of non-radioactive products. The geometry of the measurement of these colours, with luminosity including a field of measurement of 8mm allow for universal use for all types of materials. The range of applications of colour analysers is extensive and includes industry, agriculture, crafts, commerce, as well as research and development. Furthermore, these devices are used by artisans, paint manufacturers, architects, painters and designers for testing colours (for colour card, NCS, RAL, HKS) or for establishing colours after mixing various colours. We can also make ISO 9000 calibration certificates for colour analysers or factory calibration documents. If you can't find the colour analysers you are looking for, please contact us and we will help you find the best solution to suit your needs by calling our offices on: 09020607000and our technical staff will advise you regarding our measuring instruments.

Heat Deflection And Vicat Softening Temperature

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Heat Deflection And Vicat Softening Temperature
Approx. INR 25000 / Piece
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This Instrument is in according to V-TECH D 1525 for VSP 648 for HDT BS, DIN, ISO, ISI (Indian Standard) or according to customer’s required specification
  • Temperature gradient corresponding 50°c/hr, 120°c/hr or free programmable
  • Start temperature free programmable
  • Displacement measuring by vibration free Digital dial gauges accuracy of ±0.01mm
  • At the same time user conduct test of VSP or HDT
  • Sample thickness 2-12 mm
  • With high power cooling system. Re-cooling time from 200°c to ambient temperature in approx 30-45minutes
  • With help of cooling facility user can start new test immediately
  • Bath construction made by inside SS and outside MS with insulation
Stirring facility is used for uniform temperature


Additional Information:

  • Minimum Order Quantity: 1 Piece
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Carbon Black Content

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Carbon Black Content
Approx. INR 25000 / Piece
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Specification:
  • This Instrument is in according to V-TECH BS, DIN,ISO, IS (Indian Standard) or according to customer’s required specification
  • Machine maximum working temperature 800°c
  • PID based temperature controller with auto-tune facility Temperature 
    resolution 1°c with accuracy better than ±5°c
  • Furnace incorporated with heater, capacity 1kw
  • Test structure with furnace and tubing fixed and clearly allocated


Additional Information:

  • Minimum Order Quantity: 1 Piece
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Hydrostatic Pressure Testing Machine

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Hydrostatic Pressure Testing Machine
Approx. INR 25000 / Piece
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This Instrument is in according to V-TECH BS, DIN, ISO, ISI (Indian Standard) or according to customer’s required specification.
  • Maximum pressure range 0-99.99bars.
  • Fully Microprocessor based pressure controller to maintain the pressure with in 0.5% accuracy of full scale
  • Fully hydraulic system with central pressurized water supply
  • Reliable high-pressure water pump with operating pressure up to 100/200 bars
  • User-friendly data logging software provided with machine to record data and able to get graph plotting as well as database on each stations separately
  • Data record facility of all stations pressure as well as temp of one channel temperature controller
  • Presentation of report in table format graphical forms
  • Test can be conducted if power failure


    Additional Information:

    • Minimum Order Quantity: 1 Piece
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    Dissolved Oxygen Sensor

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    Dissolved Oxygen Sensor
    Approx. INR 34500 / Piece(s)
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    We are engaged in offering Dissolved Oxygen Sensor that can measure dissolved oxygen in soil or water. These sensors are highly efficient owing to its large capacity electrolyte holder, positive fit and easy to replace membrane. Besides, these are integrated with dependable galvanic cell technology for long term deployment. These are ideal for aquaculture and wastewater monitoring applications and are also available with Teflon or High-Density Polyethylene (HDPE) membranes. Following are some of the specifications of these sensors:

     

    Specifications:


    • O2 Range : 0 - 20 mg/liter
    • Temperature range : 0 - 50° C
    • Pressure : 0 - 100 psig
    • Calibration : Single point in Air
    • Cell type : Galvanic
    • Minimum flow rate : 2 inches (5 cm/second)
    • Body Material : Delrin
    • Output at saturation : (HDPE) Membrane 45 mV, ±9 mV; (Teflon) Membrane 33 mV, ±9 mV
    • Accuracy : ± 2%
    • Response time of equilibration : Within 2 mV of final reading, After 1 minute using HDPE, After 2 minutes using Teflon
    • Average estimated life span electrolyte : 9 -12 months
    • Dimensions : Diameter : 2.2 in. (5.59 cm); probe height: 3.5 in. (8.89 cm)
    • Weight : 1.1 Ibs. (500 g)
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    Barometric Pressure Sensor

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    Barometric Pressure Sensor
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    We hold expertise in offering Barometric Pressure Sensor that can operate over a temperature range of -40 to + 60 0C at low altitude and is housed in a weatherproof (IP65) casing. These are extensively used for low altitude ranging from 0-1500 m. Moreover, it is also available with indoor version and suitable for use in non-condensing environments.

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    Rainfall Sensor

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    Rainfall Sensor
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    Principle of Operation:

    It uses a tipping bucket mechanism to produce a contact closure every time it receives a predetermined quantity of rainfall. The body and funnel are made of FRP (Fiber glass Reinforced Plastic), rim is made of gun metal. All parts having contact with water are made of stainless steel. Each tip of the bucket produces an on-off output when the magnet passes over the reed switch.

    Specifications:
    Sensor Tipping bucket rain gauge
    Sensing Magnet and reed switch (on-off output)
    Resolution 0.5 mm
    Accuracy better than + 5%
    Operating Temperature -40 0C to + 50 0C with built in heater (optional)
    Rim diameter 203 mm
    Collecting area 325 mm²
    Material Rain-gauge shell made of FRP. Bucket made of stainless steel and mounting assembly of powder coated brass (SS-316 body optional)
    Capacity Unlimited
    Sensitivity 0.5 mm or 0.2 mm (rainfall per pulse)
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    Salt Spray Chambers

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    Salt Spray Chambers
    Approx. INR 142000 / Piece(s)
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    We are one of the leading manufacturers, suppliers and exporters of Salt Spray Chambers that are in conformation with industry standards. Salt Spray Chambers are sturdily constructed in our facility using high grade raw materials that are well tested and verified on several quality parameters. Salt Spray Chambers are offered at very reasonable prices. Salt Spray Chambers are easy to install and offer cost effective solutions.

    Available in Basic and Automatic models in various sizes of 120Ltr, 450Ltr, 1000Ltr, 1500Ltr and 2000Ltr.

    Features:

    • So2 dosing

    • Dry off

    • Cyclic corrosion

    • Condensing humidity

    • Dwell

    • Controlled humidity

    • Immersion

    • Spray header

     



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    Solar Radiation Sensor

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    Solar Radiation Sensor
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    Principle Of Operations:

    The pyrometer measures radiation received on a horizontal surface from both the sun and the sky. When exposed to radiation, the temperature of the blackened horizontal surface rises. Heat is lost from the blackened surface by conduction, convection and radiation. The equilibrium temperature reached is a measure of the radiation. This temperature is measured by a thermopile.

    Sensors:

    A thin metallic film blackened with a special paint (which absorbs energy completely in the range of 0.3 to 3 μm) is the sensor. A 72 element copper Constantin thermopile is in thermal contact with this thin metal film. Alternate junctions of this thermopile are in thermal contact with the massive body of the instrument at ambient temperature which serves as the cold junction. This way a millivolt output proportional to the radiation received (about 4 mV/kW/m²) develops across the thermopile. the instrument has a time constant less than 22 seconds.

    Specifications:
    Sensor 72 element thermopile
    Spectral range 0.3 to 3 μ meters
    Sensitivity ~ 20 micro volts/W/M ²
    Time constant < 30 seconds
    Range 0 – 1500 W/ Sq.m
    Output 0 to 25 Milli volts
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    Solar Radiation Sensor

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    Solar Radiation Sensor
    Approx. INR 34500 / Piece(s)
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    The Solar Radiation Sensor, or solar pyrometer, measures global radiation, the sum at the point of measurement of both the direct and diffuse components of solar radiance, the sensor's transducer, which converts incident radiation to electrical current, is a silicon photo diode with wide spectral response. From the sensor's output voltage, the console calculates and displays solar radiance. It also integrates the radiance values and displays total incident energy over a set period of time.

    The outer shell shields the sensor body from thermal radiation and provides an airflow path for convection cooling of the body, minimizing heating of the sensor interior. It includes a cutoff ring for cosine response, a level indicator, and fins to aid in aligning the sensor with the sun's rays. The space between the shield and the body also provides a runoff path for water, greatly reducing the possibility of rain- or irrigation-water entrapment. The diffuser is welded to the body for a weather-tight seal; it provides an excellent cosine response. The transducer is an hermetically-sealed silicon photo diode; the included amplifier converts the transducer current into 0 to +2.5 VDC. Spring-loaded mounting screws, in conjunction with the level indicator, enable rapid and accurate leveling of the sensor. Each sensor is calibrated against a secondary standard which is calibrated periodically against an Copley Precision Spectral Pyrometer in natural daylight


    Specifications:


    General:


    • Operating Temperature: -40° to +150° F (-40° to +65° C)

    • Storage Temperature: -50° to +158° F (-45° to +70° C)

    • Transducer: Silicon photo diode

    • Spectral Response (10% points): 400 to 1100 nanometers Cosine Response

    • Percent of Reading: ±3% (0° to ±70° incident angle), ±10% (±70° to ±85° incident angle)

    • Percent of Full Scale: ±2% (0° to ±90°)

    • Supplied Cable Length: 3' (0.9 m)

    • Cable Type: 4-conductor, 26 AWG

     

    I/O Specifications:


    • Green wire: Output (0 to +3VDC); 1.67 mV per W/m2

    • Red & Black wires: Ground

    • Yellow wire: +3 VDC ±10%; 1 mA (typical)

    • Temperature Coefficient: +0.067% per °F (+ 0.12% per °C)

    • Reference temperature: 77° F (25° C)

    • Correction per degree above reference temp: -0.067% of reading per °F (-0.12% per °C) Correction per degree below reference temp: 067% of reading per °F (+0.12% per °C)

    • Housing Material: UV-resistant PVC plastic

    • Dimensions (Length x Width x Height): 2.00" x 2.75" x 2.25" (51 mm x 70 mm x 57 mm)

    • Weight: 0.5 lbs. (226 g)

     

    Sensor Output:


    • Resolution and Units: 1 W/m2

    • Range: 0 to 1800 W/m2

    • Accuracy: ±5% of full scale (Reference: Ripley PSP at 1000 W/m2)

    • Drift: up to ±2% per year

    • Update Interval: 50 seconds to 1 minute (5 minutes when dark)

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    Sun Shine Sensor

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    Sun Shine Sensor
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    Principle Of Operation:

    There is a silicon solar photocell placed on top of the sensor mount, so that it is having a large viewing angle almost 180 degrees. The f sun’s presence is computed by the following principle, A shadow-band is rotated around the sensor to obtain the total incoming radiation, and diffused radiation (when the sensor is covered by the shadow band) by comparing the diffused and total radiation, we can assert the presence of sun. The shadow-band width is sufficient to cover the sun so that, a shadow falls on the sensor at any angle of sun. To minimize sensor position shift during seasonal sun’s change we have provided sufficiently large shadow-band.

    The output of the sensor is amplified and the variation between the diffused and total is compared using a precision analog comparator and driven through a mono stable multi-vibrator. There is a LED indication on the top, which indicates the presence of sun; this will help during installation and adjusting the threshold levels.For Threshold adjustments a potentiometer is provided this potentiometer can be accessed by removing the water tight rubber bushes on the sensor body. The sensor is already set for it’s optimum levels from factory

    Specifications:
    SensingSensitive silicon cell
    Sensing typeChopper
    Range0 to 17 Hrs
    Accuracy± 1 Minute
    Power requirement+ 12 volts DC. (40 ma)
    Size of body180 (H) x 150 mm diameter
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    Temperature and Humidity Combined Sensor

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    Temperature and Humidity Combined Sensor
    Approx. INR 14500 / Piece(s)
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    Principle of Operation :

    The sensor used for measurement is an RTD (PT 100). Here the resistance of the element varies with temperature (increases with temperature), approximately 0.39 ohms/degree Celsius. Output is 0 to 1 Volt corresponding to –40 to 60 0C.

    Specifications:

    Temperature
    Sensing RTD PT100
    Range - 40 0C to + 60 0C
    Resolution 0.1 0C
    Accuracy + 0.2 0C
    Output 0 to 1 V for –40 to +60 0C
    Weather Shield Weather shield coated with weather proof reflective white paint
    Size of body 200 (H) x 150 mm diameter(with weather shield)
    Housing The sensor is mounted on a brass/SS/ Plastic stem with a flange to fit in to the weather shield
    Power requirement 5 V DC
    Principle of Operation:

    Humidity sensor features an improved design to provide highly accurate and rapid measurements. The humidity sensor is a thin film capacitor element. A dielectric polymer absorbs water molecules from the air through a thin metal electrode and this causes a capacitance change proportional to humidity.

    Specifications:
    Humidity:
    Sensing Solid state capacity type sensor
    Resolution 0.1 %
    Range 0 to 100 % operating at -40 0C to +50 0C
    Accuracy ± 3% of full scale reading
    Operating Temperature -40  0C to +50  0C
    Power requirement + 5 volts DC
    Power consumption ~ 4 mA
    Output 0- 1 V for 0 to 100% humidity
    Weather Shield Weather shield with weather proof reflective white paint coating
    Size of body 200 (H) x 150 mm diameter. (with weather shield)

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    Wind Direction Sensor

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    Wind Direction Sensor
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    Principle of Operation:

    Wind Direction Sensor is a counter balanced, low threshold wind vane. A Linear, wire wound endless potentiometer is coupled to the vane by an SS shaft. As the vane turns, it rotates a stainless steel shaft which is coupled to the potentiometer. This potentiometer has excellent linearity, very low starting torque. The north of the wind vane is marked on its body. This line is to be aligned with actual North with the help of prismatic compass, at the time of installation. Sensor gives minimum resistance at North (i.e., 0 degree approximately 20 ohms).The resistance output linearly proportional to the position of the wind vane

    Specifications:
    Wind Direction Sensor Wind Vane
    Sensing Vane coupled to linear endless potentiometer
    Starting threshold Better than 0.5 meters/sec
    Range 0 to 357 degrees (3 degrees electrical gap in the Potentiometer)
    Output 0 to 5 kilo-ohm resistance (0 to 357 degrees)
    Resolution 1 degree
    Accuracy +/- 3 degrees
    Operating Temperature -40 to + 600C
    Construction of sensor body Brass housing, stainless steel shaft and aluminum vane

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    Wind Speed Sensor

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    Wind Speed Sensor
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    Principle of Operation:

    Anemometer is a fast response, low threshold op to electronic anemometer. When rotated by wind, a chopper on the anemometer shaft interrupts an infra red light source , generating pulses from a photo transistor. The signal is amplified and fed through a line driver. The frequency is proportional to wind speed. The anemometer is provided with a 3 pin connector for easy replacement and comes with 10 meters of shielded cable.

    Specifications:
    Wind speed Sensor 3 Cup Anemometer
    Sensing 3 cup assembly mounted on friction free shaft and coupled to a chopper
    Starting threshold 0.3 meters/sec
    Range 0 to 65 meters/sec
    Distance constant 2.5 Meters
    Output TTL pulses output proportional to wind Built in line driver to drive long cable > 50 ohms loop resistance
    Accuracy Better than 0.5 m/s up to 10 m/s + 2% FSD
    Diameter of cup 50 mm
    Diameter of cup assembly 165 mm
    Construction of sensor body Brass housing and stainless steel shaft
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    Watermark Sensor


    We are engaged in providing our clients Watermark Sensor that is used for irrigation monitoring. With its range from 0 to -200 kPa, these sensors can work when many replicates are required. Although the sensors are low in cost and the overall cost is increased by the need to include an AC exciton current and a device to read the AC output.

     

    Features:

     

    • No maintenance
    • Not affected by freezing temperatures
    • Fully solid state
    • Easy to use
    • Will not dissolve in soil
    • Inexpensive


    Approx. INR 34500 / Piece(s)

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    Call Us:  +91-8079453559
    Nunes Instruments
    Sebastian Nunes (Technical Director)
    No. 789/1109, Avinashi Road, Opposite Regional Passport Office ,
    Coimbatore - 641018, Tamil Nadu, India
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