Outdoor Environmental Analysis DeltaOHM
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Environmental Analysis - HD 9408T BARO, HD9408TR BARO, HD 9908T BARO, HD 4V8T Baro Barometric transmitters - HD 9408PS 50 Static port - HD 9008TRR, HD 9009TRR, HD 9007 Temperature and Relative humidity transmitters, protection from solar radiation - HD 9817T1R, HD 9817T2R, HD 9817T3R Humidity and Temperature transmitters, analog and digital - HD 9006 Aspirated air heated temperature sensor - LP PYRA 02, LP PYRA 03, LP PYRA 04, LP PYRA 08, LP PYRA 10, LP PYRA 12, LP PYRA 13 Pyranometers: Secondary standard, 1st class and 2nd class - HD 9906.51 Heating and ventilation unit - LP PYRA 05, LP PYRA 06 1st class and 2nd class Albedometers - LP NET 07, LP NET 14 Net Irradiance Meters - LP PIRG 01 Pyrgeometer - LP PYRHE 16 Pyrheliometer - LP PHOT 02 Photometric Probe - LP UVA 02 UVA Radiometric Probe - LP UVB 02 UVB Radiometric Probe - HD 2003, HD 2003.1 3-axis ultrasonic Anemometer - HD 52.3D... 2-axis ultrasonic Anemometer - HD 2013.2 Rain detector - HD 2013 Bucket Rain Gauge - HD 2013D Datalogger for Rain Gauge - HD 32MT.1 Meteo Data Logger - HD 32.35, HD 32.35FP, HD 32.36, HD 32.36FP Outdoor cabinets complete with data acquisition system for meteo stations - HD 53GSM GSM/GPRS quad band module - HD 2004.20, HD 2004.22 Tripod for meteo station and bracket for solar panel The qualitative level of our instruments is the result of a continuous evolving of the product itself. This way bring to slight differences between what reported on this manual and the instruments you bought. We can not completely exclude the presence of errors for which we apologise. Data, images and descriptions included in this catalogue can not be enforced legally. We reserve the right to perform any modification and correction at any time without notice. Environmental Analysis

HD 9408T BARO HD 9408TR BARO HD 9908T BARO temperature compensation over the whole range from -40°C to +60°C. HD 9408TR BARO requires a continuous dc power supply and a differential cabling connection to achieve best results. It is available in different output versions: 0÷1 Vdc, 0÷5 Vdc (1÷5 Vdc, 1÷6 Vdc on request). HD 9908T BARO, unlike the other models, is equipped with a display showing the pressure measurements, an analog output 0÷20 mA, 4÷20 mA, 0÷1 V and 0÷5 V (0÷10 V on request) configurable by the customer and with an ON/OFF relay output with programmable alarm threshold. HD 9908T...

POWER SOURCE AND MEASUREMENT DEVICE HD 9408T BARO 4÷20 mA OUTPUT (two wire) HD 9408T BARO 0÷1 V OUTPUT HD9408T BARO Measuring range Analog output Accuracy Resolution Thermal effects Long term stability Turn on time Piezoresistive diaphragm 800 ÷ 1100 mbar / 600 ÷ 1100 mbar on request 0 ÷ 1 Vdc standard; 0 ÷ 20 mA, 4 ÷ 20 mA, 0 ÷ 5 Vdc, 1 ÷ 5 Vdc, 0 ÷ 1 Vdc standard; 0 ÷ 1 V and 1 ÷ 6 Vdc and 0 ÷ 5 Vdc, 1 ÷ 5 Vdc and 0 ÷ 5 V (0 ÷ 10 V on 4 ÷ 20 mA 1 ÷ 6 Vdc on request request), configurable by (two wires) on request means of a jumper. Display: ± 1 mbar, @20°C ± 0.5 mbar, @ 20°C ± 0.5 mbar, @...

The measurement of the barometric pressure in free field can give incorrect values of hundred pascal fluctuation and wind direction. With the static port for barometric measurements, HD9408PS 50 can minimize these errors because, in addition to act as a filter (brake) against the dynamic pressure of the wind, the barometer can operate correctly even in the presence of snow or ice and comply with the recommendations of the WMO (World Meteorological Organization). The materials used for the construction of the static are UV resistant and can operate in temperatures between -40°C and +80°C....

Tests made in the wind tunnel Static port put in front of the wind tunnel Environmental Analysis ΔP according to the yaw angle β (join angle α = 0°) ΔP according to the join angle α (yaw angle β = 0°) HD 4V8T Baro Barometric transmitter Barometric transmitter to wall mount for indoor use, with 0 ÷ 1Vdc analog output. The output signal of the sensor is conditioned to provide a voltage linearly proportional to the pressure detected. Speed (m/s) ΔP according to the α join angle (yaw angle β = 0°) Technical specifications Type of sensor Measuring range Analog output Accuracy Resolution...

The user can configure the temperature output in ranges different from the standard one by means of a Pt100 simulator or of a set of fixed resistances, provided that it is included in the -40°C…+80°C range with a minimum amplitude of 25°C. Two LEDs give alarm indications (temperature exceeding set range, sensor breakage or short-circuit) and help the operator when programming. An out-of-standard temperature operating range can be requested when placing the order. Important Warning: probes work in the -40°C…+80°C temperature range. Outside this range data are not correct; electronics is...

INSTALLATION AND ASSEMBLY Figures 1 and 2 show the connection diagram of the two models. RRH and R°C represent the current input of any device connected to the 4…20mA loop, that is: an indicator, a controller, a data logger or a recorder. In figure 2, “Vin%RH and Vin°C” symbols have the same meaning. Accuracy in measuring does not depend on the transmitter position. However, it is suggested to install the transmitter with the sensor faced downwards (where possible) to reduce dust deposit on the sensor protection filter. The transmitter shall not be mounted next to doors, in draughtiness, in...

Procedure: 1. To access the panel board, unscrew grommet “A” (see figure 3) and hold the cable firmly to avoid twisting. Take the rubber bulb off and unscrew the bottom of the instrument. 2. Unscrew the sensor protection filter. 3. Unsolder the Pt100 sensor (the narrowest one) and in place of it, solder the output wires or those of a Pt100 simulator or of a precision resistance, as shown in figures 7 and 8. Then wait a few seconds for the junction to get cold. 4. Set the Pt100 simulator at the temperature corresponding to the scale upper value. For example, if you want to configure the...