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OTT TRH

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OTT TRH

    OTT TR2O Sensor

    • Calculation of absolute humidity, dew point and mixing ratio in addition to output of measured values
    • Long-term stable, can be used in extreme temperatures (– 40 °C to +80 °C)
    • Long service life thanks to rugged and compact design; a protective cap including metal grid filter provides protection against dirt, dust and insects
    • Very low power consumption
    • Easy conntection to SDI-12 data logger, e.g.OTT netDL via digital interface SDI-12 (protocol V1.3)

    OTT RS7 Weather and Radiation Protection

    • Naturally vented protective housing fitted with 7 lamellae
    • UV- and weather resistant plastic
    • White outside coating and black inside coating for optimum protection against radiant heat
    • Practical stainless steel bracket for easy installation to horizontal or vertical pipes
    • Sensor is easily installed – simply insert it and tighten screw

    OTT TRH is used in automatic weather stations, often together with  the OTT Pluvio2 series precipitation gauges:

    • in meteorology and hydrology
    • in environmental monitoring
    • in research projects
    • in agriculture and forestry

    Sensor TR2O
    Sensor output
    measured Temperature in °C or °F, relative humidity in %
    calculated Absolute humidity in g/m³, dew point in °C or °F, mixing ratio in g/kg
    Relative humidity
    Measuring range 0 … 100 % RH
    Accuracy at 25 °C and 4.5 V DC …15 V DC* (incl. repeatability, hysteresis and calibration uncertainty) max. ±2 % RH ( 0 … 90 % RH)**; max. ±3 % RH ( 90 … 100 % RH)**

    *for supply voltages of>15V DC, other accuracy values apply
    **temperature dependency: <±2% at -10°C … 60°C

    Resolution 0.10%
    Repeatability ±0.1 %RH
    Hysteresis <1 % RH
    Long-term stability typ. < ±1.5 %/year
    Response time wtih protection cap RH90 typ. <15 s at 0.35 m/s
    Temperature
    Sensor PT1000 DIN A
    Measuring range -40 °C … +80 °C
    Accuracy at 4.5 V DC …15 V DC* ±0.1 °C at 20 °C; ±0.5 °C at -40 °C, 80 °C linearity
    Resolution 0.01 °C
    Response time wtih protection cap T90 <300 s at 1 m/s airflow; T90 <250 s at 2 m/s airflow
    Absolute humidity
    Measuring range 0 … 1000 g/m³
    Resolution 0.1 g/m³
    Dew point
    Measuring range -40 °C … +80 °C
    Resolution 0.01 °C
    Mixing ratio
    Measuring range 0 … 1000 g/kg
    Resolution 0.1 g/kg
    Interface SDI-12 V1.3
    Supply voltage 4.5 V DC … 28 V DC
    Current consumption
    Quiescent < 20 µA at 12 V
    Temperature measurement typ. 550 µA
    Humidity measurement typ. 260 µA
    Ambient conditions
    Operating temperature -40 °C … +80 °C
    Storage temperature -50 °C … +80 °C
    Operating humidity 0 … 100 % RH
    Protection class IP65
    Sensor protection Protection cap with metal grid filter
    Material and dimensions
    Housing sensor Polycarbonate
    Dimension sensor Ø 12 mm x 140 mm
    Material cable PUR (black), moulded/shielded
    Cable length 3.5 m
    Wiring color code printed on housing
    Standards EG (2004/108/EG), EN 61326-1:2006
    OTT RS7 Weather and Radiation Protection
    Number of lamellae 7
    Operating temperature -40 °C … +80 °C
    Material and dimensions
    Lamellae 2 components (PS, PA)
    Bracket stainless steel
    Height incl. mount 230 mm
    Weight (without sensor) 700 g
    Pole/pipe diameter for installation
    horizontal (pipe) 3/4 … 5/4 inch (27 mm … 43 mm)
    vertikal (pole/pipe) 1 … 2 inch (27 mm … 60 mm)

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