Sunpro Measuring Instruments

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 o C to +50 o C. with built in heater(optional)
Rim diameter	203 mm.
Collecting area	325 mm².
Material	Raingauge shell made of FRP. Bucket made of stainless steel And mounting assembly of powder coated brass.( SS316 body optional)
Capacity	Unlimited.
Sensitivity	0.5 mm or, 0.2 mm (rainfall per pulse)

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 :

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 + 60 degree Celsius
Construction of sensor body	Brass housing, stainless steel shaft and aluminum vane

Principle Of Operation:

DWD 8601 wind vane 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.

Pressure transmitter CP 100

• Differential pressure transmitter type CP 100
• Measuring ranges form 0/+ 100 Pa to - 1000 / 2000 mbar (according to model, see "Configuration")
• Configurable intermediary and central zero ranges
• 0 -10 or 4 - 20 mA output, active sensor power supply 24 Vac / Vdc (3 - 4 wires) or 4 - 20mA output, passive loop, power supply 18 to 30 Vdc (2 Wires)
• ABS IP 65 housing, with or without display
• Quick and easy mounting with the "1/4 turn" system with wall-mount plate

Features of the Transmitter

Working principle : a piezoresistve sensitive element creates a proportion voltage from the pressure applied on the sensor.

Measuring range	see "Part number"
Unit of measurement	Pa,mmH2O, mbar, in WG,mmHG(CP 101 and CP 102) mbar,inWG,mmHG,KPa, PSI(CP 103 and CP 104)
Accuracy *	±1.5 of reading ±3 Pa (CP 101)
.	± 1.5 % of reading ±3 mmH2O (CP 102)
.	± 1.5 % of reading ±3 mbar(CP 103 and CP 104)
Response time	1/e(63%),0.3 sec
Resolution	1 Pa - 0, 1 mmH2O-0,01 In HG(CP 101 and CP 102) 0,01mbar - 0,01,In WG - 0,01 MmHG - 0,1 KPa - 0,1 PSI (Cp 103 and CP 104)
Autozero	manual with push - button
Type of fluid	air and neutral gases
Overpressure tolerated	25000 Pa (CP 101), 7000 mmH2O(CP 102) 1400 mbar(CP 103), 3000 mbar(CP 104)

Sensing	Sensitive silicon cell.
Sensing type	Chopper
Range	0 to 17 Hrs.
Accuracy	± 1 Minute
Power requirement	+ 12 volts DC. (40 ma)
Size of body	180(H) x 150 mm diameter.

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 :

Range	- 40 to +60 deg C
Accuracy	+ 0.1 deg C
Resolution	0.01 deg C
Sensor type	Resistance type (PT 1000)
Response time	< 10 sec
Out put	Resistance proportional to temp (non linear)
Construction	SS 316 Body

Principle Of Operation:

Sunpro Soil Temperature sensor consists of a PT1000 RTD embedded at the thermally isolated tip of an SS316 probe 25 CM in length. The depth at which the measurement is to be made can be adjusted using a position adjustable ring provided on the stem.

The sensor wires are terminated in a weather proof SS head and a 20 meter cable is provided for connection to Datalogger or other circuitry.

Ordering Information:

Sunpro Soil Temperature Model no DTS 8108

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.

For operation at low temperature the sensor can be supplied with a built in heater The Anemometer can be supplied with a 20W 24 V DC built in heater for operation at low temperatures.


Note : these specifications are likely to change without notice.

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 speed 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 .

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 o C to +50 o C. with built in heater(optional)
Rim diameter	203 mm.
Collecting area	325 mm².
Material	Raingauge shell made of FRP. Bucket made of stainless steel and mounting Assembly of powder coated brass.( SS316 body optional)
Capacity	Unlimited.
Sensitivity	0.5 mm or, 0.2 mm (rainfall per pulse)

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.

Offers msi and sensym make strain gauge type pressure sensor in differential / absolute and gauge pressures. Having plastic and stainless steel enclosure pcb mounted as well as mechanical fitting available power required 5 to 24 v dc and out put 0 to 100 m v, 0 to 6 v dc, 4 to 20 m amp etc. Is available. Pressure range 4’’ of h20 to 5000 psi and about 500 different models are available of various size and pressure ranges. Absolute vacuum & vacuum + pressure compound sensors also available in new models for high pressure up to 15000 psi can be supplied in shortest time. Pressure controlling / recording system can be supplied too & pressure calibrator comparison test pumps can be supplied.

Differential Pressure Gauges :


The series S2000 is a low cost, diaphragm operated, differential pressure gauge. The S2000 can be used in applications for measuring positive, negative, or differential pressure with an accuracy of 2%. Standard applications include monitoring filter status, duct static pressure, room pressure, fan or blower pressure, paint booths, dust collectors, and cabinet purging along with many others.

Pressure Limits	-20" Hg to 15 PSI (-0.677 bar to 1.034 bar); MP option: 35 PSI (2.41 bar)
Media compatibility	Air and compatible gasses
Accuracy	+/- 2% full scale (+/- 3% on -0 and +/- 4% on -00) throughout range at 70°F (21°C)
Temperature Ranges	20° to 140°F (-7° to 60°C)
Housing Material	Die cast aluminum case and bezel, with acrylic cover
Process Connection	1/8" female NPT duplicate high and low pressure taps - one pair side and one pair back.
Weight	1 lb 2 oz (510 g), MP & HP 2 lb 2 oz (963 g)
Accessories	Two 1/8" NPT barbed fittings, two 1/8" NPT plugs, and three mounting tabs and screws

Series 211 Differential Pressure Transmitter can accurately measure positive, negative, or differential pressure and send the corresponding 4-20 mA output signal. The Series 211 is not position sensitive and can be mounted in any orientation without compromising accuracy. It also features a power LED, so you always know when the transmitter is operating. The compact, lightweight design makes installation simple and easy.

Maximum Pressure	Ranges 5 <PSI –Max 15 PSI , Ranges > 5 PSI –Max 30
Media compatibility	Air and compatible non combustible, non corrosive gasses
Accuracy	Ranges < 4” w.c. 1.0% , Ranges > 5” w.c. 0.25%

Sunpro Instruments (India) PVT. LTD., Pune Introduces first time in India the Economical series of chart less recorders with data logging facility combined in single unit. The product is purely made in India with lot of facilities and customization to compete the high-cost imported products.
HMI-075 (TFT) is an easy-to-use, reliable and cost effective choice for process parameter monitoring. This unit comes with different no of channels right from 8 channels to 16, 24, 32 or 48 channels. The 8” 256 colour (size 120 160mm) TFT monitors are used for attractive display. The 15” Display TFT’s are also available up to 96 channels . The splash proof 5 keys membrane keypad is given for setting up the user parameters. All channels can be seen on single screen with the internal scan rate of 125 msec / Channel. Inbuilt printer port is available for getting the report in with standard format of the Date, Time and the process value for each channel in separate columns. High Low alarm by visual indication highlighted by different colour. The RS 232 or RS 485 comm. port is also available for communication with Personal Computer (PC) with standard MS Windows based monitoring software for long term retention of data. For better security against tampering of data special passwords given at each stage. The networking of more than one Loggers be done and by using single monitoring software we can be able to view data for all the loggers on PC.

Key Features of HMI-075 (TFT)

• Microprocessor based highly precise design with 256 colour TFT screen as display unit
• Display resolution of 640 48 and size of 120 160 mm which can be upgradeable to for 15” Display.
• In put: Universal 3 wire PT 100 / (J, K, R, S) Thermocouple / 4 to 20 mAdc / 0 to 5 VDC  Selectable using front keys or Defined single input (Any one of given)
• RS 232 or RS 485 communication port for external world communication Optional MODBUS RTU
• Centronic parallel printer port for direct printing without using PC. Which is compatible for DOT Matrix Printer
• Online as well as offline graph for each channel with different colors
• Log Time / Print Time selectable from 1 min. to 99 min.
• Memory: Non Volatile 500 to 1000 readings / Channel depending on model MS windows based monitoring software available.

Presents 8 ch / 16 ch / 24 ch / 32 channels process scanners & datalogger for any process parameter like pH / cond. / Temp. / Pressure / level / humidity / flow etc. On line/ Off line datalogging with computer printer output as well as Computer connectivity with software available.

Microprocessor based L.E.D/L.C.D. display scanners / dataloggers in din rack mounted enclosure will have easy operative connectors with feather touch front key operations with menu to feed according to site conditions like speed/logging time/scan time/ Input signals etc.

Universal input available & suitable scans time with display, with hold / skip facility, common set point & common output for alarm relay 3/5 amp can be incorporated. Individual scan channel indication by separate L.E.D. possible.

Standard tabular data for only printer output is available and standard software for online P.C. with tabular / graphical / statistical analysis available. Both printer & on line software can be changed as per customer requirement with extra charges.

We Under Take Validation / Mapping Calibration Job In House /On Site For Temp. / Pressure / Humidity / Airvelocity Etc. Tracable To N.P.L. Standards & Certify The Same.”