Thiết bị đo nhiệt độ, độ ẩm Senseca Delta Ohm HD3817T / HD38V17T Series – Absolute Humidity Transmitters

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  5. Thiết bị đo nhiệt độ, độ ẩm Senseca Delta Ohm HD3817T / HD38V17T Series – Absolute Humidity Transmitters
Thiết bị đo nhiệt độ, độ ẩm Senseca Delta Ohm HD3817T / HD38V17T Series – Absolute Humidity Transmitters

Thiết bị đo nhiệt độ, độ ẩm Senseca Delta Ohm HD3817T / HD38V17T Series – Absolute Humidity Transmitters

Dual transmitter for absolute humidity and temperature, Pt100 sensor. Standard configuration range: 0 ÷ 60g/m³ in absolute humidity, 0 ÷ 200°C in temperature. Current or voltage output.

The HD3817T… and HD38V17T… are double absolute humidity and temperature active transmitters with 4…20mA current or 0…10Vdc voltage outputs, respectively.

Absolute humidity is the ratio between the mass of water vapour and the measured volume of air, and is expressed in g/m³.

The transmitters of the HD3817T… family may be used in materials humidity control during a drying process. When the materials are dried through heating or a hot air flow, the air absolute humidity increase is directly proportional to the quantity of water lost by the materials. A control system measuring absolute humidity, can maintain a certain humidity level by injecting vapour or water spray in the environment, if needed.

Generally, these transmitters are employed in the chemical, textile, food industry, in the production and storage of paper, in the drying of wood, even with high temperatures and wide humidity excursions.

The type of sensor used is immune to most physical and chemical contaminants. The maximum working temperature is 200°C: This makes these instruments particularly suitable to heavy industrial applications where the traditional capacitive sensor cannot be used.

The response time is fast, as well as the recovery time from saturation.

The maximum measurement ranges are: 0…130 g/m³ for absolute humidity and 0…200°C for temperature: the instruments come out of the factory with the 0…60 g/m³ and 0…200°C standard ranges.

The standard power supply is 24VAC. On request, 115VAC or 230VAC versions are available.

The probe is made of stainless steel and has a 20µm sintered bronze filter. The case is in polycarbonate with an IP66 protection degree.
  • HD3817T / HD38V17T Series
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Thiết bị đo nhiệt độ, độ ẩm Senseca Delta Ohm HD3817T / HD38V17T Series – Absolute Humidity Transmitters 

HD3817T120    Dual transmitter for absolute humidity and temperature with 4÷20 mA output. Power supply 24 Vac
HD3817T122    Dual transmitter for absolute humidity and temperature with 4÷20 mA output. Power supply 230 Vac
HD3817T150    Dual transmitter for absolute humidity and temperature with 4÷20 mA output. Power supply 24 Vac
HD3817T152    Dual transmitter for absolute humidity and temperature with 4÷20 mA output. Power supply 230 Vac
HD3817T220    Dual transmitter for absolute humidity and temperature with 4÷20 mA output. Power supply 24 Vac
HD3817T222    Dual transmitter for absolute humidity and temperature with 4÷20 mA output. Power supply 230 Vac
HD3817T250    Dual transmitter for absolute humidity and temperature with 4÷20 mA output. Power supply 24 Vac
HD3817T252    Dual transmitter for absolute humidity and temperature with 4÷20 mA output. Power supply 230 Vac
HD38V17T120    Dual transmitter for absolute humidity and temperature with 0÷10 V output, sensor Pt100. Power supply 24 Vac
HD38V17T122    Dual transmitter for absolute humidity and temperature with 0÷10 V output, sensor Pt100. Power supply 230 Vac
HD38V17T150    Dual transmitter for absolute humidity and temperature with 0÷10 V output, sensor Pt100. Power supply 24 Vac
HD38V17T152    Dual transmitter for absolute humidity and temperature with 0÷10 V output, sensor Pt100. Power supply 230 Vac
HD38V17T220    Dual transmitter for absolute humidity and temperature with 0÷10 V output, sensor Pt100. Power supply 24 Vac
HD38V17T222    Dual transmitter for absolute humidity and temperature with 0÷10 V output, sensor Pt100. Power supply 230 Vac
HD38V17T250    Dual transmitter for absolute humidity and temperature with 0÷10 V output , sensor Pt100. Power supply 24 Vac
HD38V17T252    Dual transmitter for absolute humidity and temperature with 0÷10 V output , sensor Pt100. Power supply 230 Vac
HD3901.10    Leaf wetness sensor. Cable 10 m.
HD3901.5    Leaf wetness sensor. Cable 5 m.
HD3910.1.10    Two-electrode probe for the measurement of the soil volumetric water content. RS485 MODBUS RTU output. Cable length 10 m.
HD3910.1.5    Two-electrode probe for the measurement of the soil volumetric water content. RS485 MODBUS RTU output. Cable length 5 m.
HD3910.1A.10    Two-electrode probe for the measurement of the soil volumetric water content. analog output. Cable length 10 m.
HD3910.1A.5    Two-electrode probe for the measurement of the soil volumetric water content. analog output. Cable length 5 m.
HD3910.1S.10    Two-electrode probe for the measurement of the soil volumetric water content. SDI-12 output. Cable length 10 m.
HD3910.1S.5    Two-electrode probe for the measurement of the soil volumetric water content. SDI-12 output. Cable length 5 m.
HD3910.2.10    Three-electrode probe for the measurement of the soil volumetric water content. RS485 MODBUS RTU output. Cable length 10 m.
HD3910.2.5    Three-electrode probe for the measurement of the soil volumetric water content. RS485 MODBUS RTU output. Cable length 5 m.
HD3910.2A.10    Three-electrode probe for the measurement of the soil volumetric water content. analog output. Cable length 10 m.
HD3910.2A.5    Three-electrode probe for the measurement of the soil volumetric water content. analog output. Cable length 5 m.
HD3910.2S.10    Three-electrode probe for the measurement of the soil volumetric water content. SDI-12 output. Cable length 10 m.
HD3910.2S.5    Three-electrode probe for the measurement of the soil volumetric water content. SDI-12 output. Cable length 5 m.

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