nomad HB3289-01 Users Handbooks
                                                                    | |
Contents
| 
6.5.1 Global Solar Radiation Sensor SpecificationPart number: 187010BSpectral range: 0.4 to 1.1 μmRange: 0 - 2000 W/m²Sensitivity: Typically 100 μV/W/m²Response time: <1 sCosine response: Typically <10% from normal to 80° of normalOperating temp: -40°C to +80°CSupply voltage: Passive device, no supply is requiredOutput calibration: Typically 100 μV/W/m², supplied withindividual calibration details6.5.2 Sunshine DurationThe internal logger can determine daily Sunshine hour values. The accumulatedtotal is determined based upon the time during which the solarimeter has beenexposed to a radiation level exceeding a threshold of 200W/m².6.6 Barometric Pressure SensorThe new Casella barometer is mounted on acircuit board in the data logger, which itselfis inside the environmental case. A 1 mmventilation hole in the case ensures theinternal pressure remains at ambient.A monolithic silicon transducersenses pressure by means of a silicondiaphragm into which a “bridge” of piezoresistors have been defused.The silicon crystal, whichconstitutes the diaphragm, being a perfectdevice does not suffer from hysteresis. Thehigh signal level obtained is furtherconditioned to give an exceptional degree ofaccuracy, repeatability and linearity.The pressure transducer istemperature stabilised at 60°C to minimisetemperature effects on the overall accuracy.6.6.1 Barometric Pressure Sensor SpecificationPart number: 183014BTransducer: The pressure sensor is temperature stabilisedat 60oCRange: 800 to 1100 hPa (mB)Operating temp: -40°C to + 85°CAccuracy: <1 hPa (mB)Temperature drift: Typically <0.15 mB/°CSupply voltage: 9 - 12 V nominalPower consumption: Approx. 10 mA at 12 V6.7 Rainfall SensorThe tipping bucket raingauge should be positioned horizontally at least twice theheight of any obstruction (weather station tripod) away from the obstruction.Connect it to the 4-pin socket via the 9 m cable supplied.The tipping bucket is a well proven method of monitoring rainfall whitha divided bucket assembly mounted on pivots.Standard SensorsThe pressure sensor boardFigure 15: Barometric pressurePage 45 of 68NOMAD Portable Weather StationUsers Handbook |
This manual is suitable for:
manualsdatabase
Your AI-powered manual search engine