Networking Device Dealers

(5 products available)
  • USB SMART QUANTUM SENSOR (SQ-520)

    USB SMART QUANTUM SENSOR (SQ-520)

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    • MOQ1 piece
    • Brand Nameapogee
    • ACCURATE, STABLE MEASUREMENTS Long-term non-stability determined from multiple replicate quantum sensors in accelerated aging tests and field conditions is less than 2 % per year. UNIQUE DESIGN Measure photosynthetically active radiation with a research grade, full-spectral response sensor. Offers a self-cleaning, cosine-corrected head to minimize errors and is fully-potted for a waterproof design. NO DATALOGGER REQUIRED Sensor can be connected to a desktop, laptop, or tablet computer via a USB 2.0 type A plug. The ApogeeConnect software gives the user control of data logging and calibration settings, provides real-time output display and graph of PPFD measurements, and allows the data set to be saved as a csv file for analysis. Sensor has internal data storage ability to hold up to 10,000 measurements. CALIBRATION TRACEABILITY Apogee SQ-500 sensors are calibrated through side-by-side comparison to the mean of four transfer standard sensors under a reference lamp. The reference sensors are recalibrated with a quartz halogen lamp traceable to the National Institute of Standards and Technology (NIST). SPECTRAL ERRORS OF COMMERCIAL QUANTUM SENSORS Spectral errors are theoretical errors calculated from sensor spectral responses and spectral output of radiation sources. Only spectral errors are listed in the table. Calibration, cosine, and temperature error can also contribute to measurement error.
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  • Study Of Second Order Networks

    Study Of Second Order Networks

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    We offer Study of Second Order Networks useful for control labs. Second order networks are important because of the fact that these are the simplest networks that produce the complete range of transient response – from over damping to near oscillations. Although theoretical discussions are normally confined to passive RLC networks, such networks are limited in their performance due to the rather large resistance of any reasonable value inductance that might be constructed to operate at frequencies of few kHz. In the present unit active RC-network has been designed which span the complete behavior of an equivalent passive RLC network. The user thus has the experience of studying a near ideal passive second order network complete with all theoretical computations and their experimental verifications. Highlights >>Active second order network >>Damping control–over-, critical-, and under-damping >>Built-in sine wave signal >>Needs an external CRO for response study >>Operates with 220V/50 Hz >>Detailed technical literature and experiment results supplied Experiments >>Observe and trace from the CRO screen the step response for different values of zeta. >>Compute approximate values of equivalent network parameters. >>Plot the frequency response for various of zeta and observe resonance Features and Specifications >>Active RLC network using 3-Op Amps >>Damping 1.1-0.1 (approx) >>Square Wave 35-700 Hz., 0-1V (typical) >>Sine Wave 35-700 Hz., 0-1V (typical) >>Essential accessory: a CRO The experiment is complete in all respect, except a CRO.
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  • Study Of Second Order Networks

    Study Of Second Order Networks

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    We offer Study of Second Order Networks useful for control labs. Second order networks are important because of the fact that these are the simplest networks that produce the complete range of transient response – from over damping to near oscillations. Although theoretical discussions are normally confined to passive RLC networks, such networks are limited in their performance due to the rather large resistance of any reasonable value inductance that might be constructed to operate at frequencies of few kHz. In the present unit active RC-network has been designed which span the complete behavior of an equivalent passive RLC network. The user thus has the experience of studying a near ideal passive second order network complete with all theoretical computations and their experimental verifications. >>Highlights Active second order network Damping control–over-, critical-, and under-damping Built-in sine wave signal Needs an external CRO for response study Operates with 220V/50 Hz Detailed technical literature and experiment results supplied >>Experiments Observe and trace from the CRO screen the step response for different values of ζ. Compute approximate values of equivalent network parameters. Plot the frequency response for various of ζ and observe resonance >>Features and Specifications Active RLC network using 3-Op Amps Damping 1.1-0.1 (approx) Square Wave 35-700 Hz., 0-1V (typical) Sine Wave 35-700 Hz., 0-1V (typical) Essential accessory: a CRO The experiment is complete in all respect, except a CRO.
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  • Plain Tractor Trolley Hub

    Plain Tractor Trolley Hub

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    Plain Tractor Trolley Hub, Agricultural Tractor Trolle
  • Ethernet Hub

    Ethernet Hub

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    Ethernet Hu
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