Air Speed measuring & regulation
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• Accredited laboratory SIT Centre 124 in Air speed. Handheld Micro-Manometers using Pitot tubes, thermometers for thermocouple probes Transmitters for air speed, temperature, and humidity Hot-wire air speed transmitters Three axis ultrasonic transmitters 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.

nected to the electronics through a cable. In the TO version, the duct probe is fixed to the electronics enclosure and it is available in three different lengths. To fix the probe to the duct, you can use, for example, the HD9008.31 flange, a 3/8” universal biconical connection or a PG16 metal cable gland (∅10…14mm). In the TC version, the probe together with the sensors is equipped with a cable which can be 2, 5 or 10 meters long. The probes are available in three different lengths. Common technical specifications Air speed Measuring range Air speed Accuracy range 0…1m/s range 0…2m/s range...

Installation notes • The window of the sensor (or of the sensors) must be oriented in the direction of flow. To facilitate the proper positioning of the probe, eg. inside of a pipe, a graduated scale, engraved along the stem, indicates the depth of introduction of the window speed sensor in the channel. To properly orient the sensor to the flow, once introduced into the channel, the air speed window and line on the base of the scale are on the same axis. • The jumper on the board selects an integrated response time in 0.2s in the FAST position and in 2s in the SLOW position. Please set the...

+ Power supply Vac/Vdc Electrical connections Power supply Power the instrument at the voltage shown in the electrical specifications: power supply terminals are marked as +Vdc and GND. Analogue output According to the model, the output signal comes from: • VEL and GND terminals for air speed transmitters, • VEL and GND, Temp and GND terminals for temperature / air speed transmitters, • VEL and GND, Temp and GND, %RH and GND terminals for temperature / relative humidity / air speed transmitters.

HD2903T… and HD29V3T… ORDERING CODES HD2903T…: Active transmitter for measuring air speed in ducts, 4…20mA output. AISI 304 steel probe, diameter 12mm, compact unit HD2903TO… version with probe joined to the electronics enclosure, HD2903TC… version with probe connected to the electronics through a cable. Air speed range 0.05…1m/s 0.1…2m/s 0.20…10m/s - 0.20…20m/s selected by jumper. Power supply 16...40Vdc or 12…24Vac. Air probe operating temperature -10+80°C. HD29V3T…: Active transmitter for measuring air speed in ducts, 0…10Vdc output. AISI 304 steel probe, diameter 12mm, compact unit...

Installation notes • The probe must be used with clean air only and humidity below 80%. • In …S1 and …S3 directional probes, the sensor hole must be oriented in the same direction as the flow: turn the probe so that the displayed speed will be the highest, at constant flow. • To fix the probe of …S1, …S2 and …S3 models inside a ventilation duct, a pipe ,etc. use a PG9 or PG11 metal cable gland according to the shape or a connection equipped with a ¼” rubber ring. • The transmitters are factory calibrated and no further adjustments are required. • Select the response time by using the JP...

Ø8 AP403S3 Flexible directional probe for HD4…3TS3 How to compose your purchasing code HD4 3TS 1 = Directional probe 2 = Omnidirectional probe 3 = Flexible directional probe 4 = Omnidirectional probe with tripod 0 = 4…20mA signal output V = 0…10Vdc signal output PURCHASING CODES HD403TS1: Active hotwire air speed transmitter with 4…20mA output. Measuring range: 0.20…40m/s. Directional probe ∅=8mm, cable L=2m. HD4V3TS1: Active hotwire air speed transmitter with 0…10Vdc output. Measuring range: 0.20…40m/s. Directional probe ∅=8mm, cable L=2m. HD403TS2: Active hotwire air speed transmitter...

Technical specifications Air speed Measuring range Air speed Accuracy range 0…0.99m/s range 1…5m/s Temperature measuring range Temperature Accuracy range 0…70°C remaining range Output (for both temperature and air speed) Load resistance for current outputs for voltage outputs Power supply Operating temperature electronics probe Compensation temperature Storage temperature Electronics protection class Sensor working conditions Case dimensions Probe cable length The HD103T.0 measures air speed by using an omnidirectional hotwire probe. It has three configurable analogue outputs: 4…20mA and...

Typical applications: - Meteorology - Aviation and Navigation - Tunnels, Highways - Climatology - Sport and winter stations - Safety in yards - Industrial buildings Technical specifications Output quantities • Anemometric parameters Wind speed and direction, Sound Speed, Sonic Temperature, U-V-W Components • Meteorological parameters (Model HD2003) Pressure, Temperature, Relative Humidity • Heading Compass with magnetic Azimuth • Moving Averages 1÷60 sec./ 1 ÷ 60 min. • Output rate 1÷3600 sec. or 1/50 sec. (RS232 or RS485) Grounding screw HD 2003, HD 2003.1 THREE AXIS ULTRASONIC ANEMOMETER...

Output quantities: Wind speed Wind direction Compass Sonic temperature Pressure Humidity External sensors Solar radiation (LP PHOT or LP PYRA) Rain detector (HD2013.2) Luxmeter LP PHOT or pyranometer LP PYRA Slave Computer Output quantities: Wind speed Wind direction Compass Sonic temperature External sensors: Temperature and Relative Humidity HD9009TR Temperature ( HD9009TR ) Pressure ( HD9408T ) Humidity ( HD9009TR ) Solar radiation ( LP PHOT oppure LP PYRA ) Rain detector (HD2013.2) Slave Computer Wind Speed • Measuring unit • Range • Resolution • Accuracy Wind Direction • Range •...