Sunjray Infosystems (P) Ltd Raj Bhavan Road, Hyderabad, Telangana

Y-Cable helps you in real time data transmission from any device. We have being suggesting the use of the Y-Cable to get the Real Time Ambient Air Quality (AAQ) and Stack Emission Data Transmission through YCable Mode Over GPRS Link Y-Cable has been developed to help the organization in the process of transmission of real time data from different remote locations. The remote data can be captured using different types of sensors or measurement tools and save into a data logger for transmission to the main server. The transmission can be possible over satellite PSTN, GPRS and other medium. However, the transmission of real time data from stack emission and ambient air quality parameters using GPRS technology by Y-cable mode for maintain transparency Y-Cable has been launched by Sunjray Infosystems in the year 2011

Data from a network can be available in real time. It has have facility to transmit data via GSM and GPRS network to ensure data transfer in real time without any delay in case of network congestion. The DTU can automatically send message containing packet data to the server at configured time interval. Two way communications is possible in DTU. In case failure in data transmission, the DTU can switch over to BURSTY MODE to transmit the data as per the request from the server. The packet data from the DTU can be transmitted in ASCII format to the server. It supports both UDP and TCP protocols along with HTTP as well. Download over the Air (DOTA) can be done to avoid travelling to site for configuring the DTU. The DOTA is enabled in all DTU and it can be done either via SMS or over FTP.

Ultrasonic Anemometer measures the time taken for an ultrasonic pulse of sound to travel from the North transducer to the South transducer, and compares it with the time for a pulse to travel from S to N transducer. Likewise times are compared between West and East, and East and West transducers. For example, a North wind is blowing, then the time taken for the pulse to travel from N to S will be less than from S to N, whereas the W to E, and E to W times will be the same. The wind speed and direction can then be calculated from the differences in the times of flight on each axis. This calculation is independent of factors such as temperature.   It is easy to install and maintain because of lightweight and compact, and has no moving parts. For operation in areas where frequent extreme icing conditions will be encountered, built-in, thermostatically controlled heaters are available. YDH AWS-1 Ultrasonic anemometers are provided with a built-in, flux-gate compass, which automatically references the wind direction output to magnetic north, regardless of the sensors orientation. This compass feature, combined with our sensors small size, low weight and low power requirements makes it very easy to transport and deploy for short-term studies. These features also make it the ideal sensor for providing meteorological data input to a computer that performs real time dispersion calculations at an accidental spill or release of hazardous materials. YDH AWS-1 Ultrasonic anemometer measures the wind using the principles described above without any moving mechanical devices, i.e. there are no physical constraints on the sensor response due to mechanical friction, aerodynamic drag, lift or transducer mass. YDH AWS-1 Ultrasonic anemometer is an instrument that exhibits an instantaneous response, has zero threshold, no delay distance and is critically damped. The accuracy of the wind speed measurement is the same as the resolution (0.1 m/s) and is only limited by the electronics of the sensor.

Range : 0 to 65 m/s (wind speed), 0 to 360 degree for direction

Range : 0 to 1500 W/m²

The Tipping Bucket performs a wide range of rainfall measurements. The receiver is 200 mm in diameter. The Tipping Bucket measures each 0.2, 0.5, 1mm or 0.01 inch of rainfall. It could also include a siphon (optional) that allows rain to flow at a steady rate to the tipping bucket mechanism regardless of rainfall intensity. This system allows control of the “flow rate” of accumulated precipitation. This metering geometry assures higher levels in both accuracy and repeatability during periods of extremely heavy rainfall. Tipping bucket gauges operate by capturing a small volume of water in one of two small buckets as shown in Figure below. Once the rain is captured, the bucket tips and empties. The occurrence of this “tip” is recorded, and precipitation volumes and rates are transmitted as the number of tips and the rate at which they occurred. Tipping bucket rain gauges tend to underestimate precipitation during periods of intense rainfall and in case of frozen precipitation. All gauges tend to underestimate in high wind. But compared to weighing gauges, tipping bucket gauges are less expensive and demand significantly less maintenance. Our Tipping Bucket Rain Gauge is the only one Stainless Steel Tipping Bucket Rain Gauge for Cylinder, Base, Tipping Bucket, all metal.

Solar Radiation Sensor is an ISO-second-class pyranometer that monitors solar radiation for the full solar spectrum range. It connects directly to a YDH-1 RTU, and is used for many meteorological applications.

SVR – Surface Velocity Radar The SVR allows scientists to determine the surface velocity of water. Designed specifically to measure streams and rivers, the SVR gives you precise speed measurement from a stationary position outside the body of water. Face Panel   The face panel includes a 3-digit speed display and three buttons: menu, select, and power. Using the “menu” and “select” buttons you can control display backlighting, cosine correction, serial communication output mode, and high / low speed range settings. Angle Correction The SVR includes cosine error correction, allowing the unit to account for target angles not parrellel to the direction of water travel. The SVR includes an internal sensor to detect vertical angle, and allows users to set horizontal angles to ensure accurate speeds.

Radar Water Flow Sensor Non-Moveable   SI-3 System Interface   The stand-alone SI-3 stationary radar unit sets new standards for size and configurability. Information outputs to a serial port for communication with standard numeric display signs, radar message trailers, computers, and conveyer belt controls. Part Number: SI-3 About Special Application Radar The SI-3 was designed to meet a wide variety of demands, including radar message trailers, computers, and conveyer belt controls. A self-contained, stand-alone unit, the SI-3’s internal firmware is customizable, allowing changes to range, output format as well as many other options. SI-3 has all the good qualities and technical features of SI-2 but is almost half the size. With weight of 0,52kg (1,14lbs) and length of 14,05cm (5,6in) SI-3 is easy to fit almost anywhere. Replacing the cable to the side instead of the back like it is at SI-2, the radar shortens even more. Features • K-Band Antenna• Directional• RS232 Serial Port• Stationary Mounted Radar Systems• 5-150mph (8-241 km/h) Speed Range• Range: 1,500ft (457,2m : default setting) 3,000 ft ( 914,4m : maximum range)• Highly Customizable to Meet Customers Needs

The Micro-Wave River Velocity Portable Meter gives you precise speed measurement from a stationary position outside the body of water. This will help you gain accurate water speed measurement, designed specifically to measure streams and rivers. The Micro-Wave River Velocity Meter Portable is perfect tool for flood management applications The Micro-Wave River Velocity Meter Portable is extremely valuable for measuring water surface velocity during high velocity flows and flood conditions where using contact measurement instruments pose a risk to safety. Functions Touchscreen controls Built in data logger with automatic date and time information Allows scientists to determine the surface velocity of water Includes cosine error correction, allowing the unit to compensate for horizontal and vertical angles Wide velocity flow range (0.2 – 20 m/s) Powered by replaceable & rechargeable Li-ion batteries Accepts tripod mounting User friendly measurement and reading Data port for computer. Internal cosine error correction, allowing the unit to compensate for vertical angles up to 60 degrees. Measurement specifications

YDH series data logger is the new generation of data loggers. It combines the latest communication technology with advanced measurement technology, and is based on FPGA technology to make it especially powerful. It can process multi-analog input channels at both low and high rates of sampling. Measurement data can be accurately acquired, independently stored and transmitted to the internet or a PC for evaluation via optional USB, LAN, WLAN or GPRS. YDH series data logger is available in optional versions which differ only in the number of analog and digital inputs they can process. All YDH series data logger could be expanded to 4GB memories that can independently store up to 125 million measurement values with date and time stamps to msec precision. Storage capacity can be extended as required via external USB or LAN storage devices (NAS). An integrated, energy-saving “sleep function“ automatically switches off the device during breaks in measurement acquisition. The All YDH series datalogger operates with solar units. Precision measurement is ensured through the use of a 16-bit converter. Voltages can also be precision recorded to the μV range. All channels are galvanically isolated to suppress earthing loops and the tried and tested input circuitry protects the device against voltage spikes. Electromechanical components are avoided (relays multiplexer), and the device operates noise and maintenance free. The patented analog inputs guarantee years of reliable measuring work.

Air temperature and relative humidity probes typically consists of two separate sensors packaged in the same housing. Often relative humidity is measured with a capacitive RH sensor, while air temperature is measured by a PRT. The YDH-1 AWS Air Temperature and Relative Humidity Probes are recommended in humid areas or applications in which accurate measurements of RH (especially above the 90% RH level) are important. Solar radiation shield are required for the sensors if they were to be exposed to sunlight. Air temperature

Accuracy : ± 0.1°C or better

Response Time : 60 seconds

Output : DC analogue, RS 232

Accuracy : ± 3% or better

Response Time : 60 seconds

  A radar sensor measures water level by propagating electromagnetic energy with an antenna. Because radar energy reflects and similarly to light,objects in the propagation path reradiate the microwave energy back to the radar antenna. The time it takes for the energy to the return to theenergy back to the radar (travel time) is determinted with the radar’s integral digital signal processing units and software.The resulting travel time is used to determine the distance to the water level. Pulse radar level transmitters provide water level measurement based on the direct measurement of the running time of microwave pulses transmitted to and reflected from the surface of the river being measured. Pulse radar operates in the time domain and therefore it does not require the FFT analysis that characterizes FM-CW radar. Since, the running time for a distance of a few metres is measured in nanoseconds. For this reason, a special time transformation procedure is required to enable these short time periods to be measured accurately. The requirement is for a ‘slow motion’ picture of the transit time of the microwave pulses with an expanded time axis. By slow motion it means milliseconds instead of nanoseconds. Pulse radar has a regular and periodically repeating signal with a high pulse repetition frequency (PRF). Using a method of sequential sampling, the extremely fast and regular transit times can be readily transformed into an expanded time signal. Pulsed radar has several advantages including increased range, lower power consumption, and it does not rely on the Doppler Effect to determine range.\   Functions Direct, time of flight level measurement. Uses a special sampling technique to produce a time expanded intermediate frequency signal. The intermediate frequency is produced in hardware and does not require FFT analysis. Low processing power requirement mean that practical and very capable two wire, loop powered, intrinsically safeso our pulse radar can be used in some of the most challenging process water level applications.