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RH-Outdoor-Air
Umidità relativa aria esterna
- Monitorare l’umidità dell’aria esterna
- Controllo economizzatore
- Calcoli psicrometrici come entalpia e punto di rugiada
- Applicazioni di lavaggio
RH-Outdoor-Air
Da
Panoramica del Prodotto
- Applicazioni Monitoraggio ambientale, Misurazione e controllo dei fluidi
- Collegamento elettrico Terminale a vite
- Potenza elettrica da 4 a 20 mA
- Filtro Filtro idrofobo
- Corrente, max 8 mA
- Tipo di misurazione Umidità, temperatura
- Orientamento di montaggio Aria esterna
- Temperatura di esercizio, max 60 °C
- Temperatura di esercizio minima -40 °C
- Dettagli sull'uscita 0-5 VCC: 12 - 40 VCC / 18 - 28 VCA
- Umidità relativa 10 al 95%
- Tipo di sensore di umidità relativa Capacitivo con filtro idrofobico
- Ripetibilit 0,5% UR, ± 0,05°C
- Tempo di risposta 20 secondi tipici
- Sensibilità 0,1% UR
- ID serie RH-Outdoor-Air
- Stabilità Stabilità RH: deriva inferiore al 2% / 5 anni
- Temperatura di stoccaggio, max 65 °C
- Temperatura di stoccaggio, min. -40 °C
- Tipo di alimentazione CC
- Tensione di alimentazione 24 Vcc
- Coppia di serraggio 4,43 a 5,31 lb-in (0,5 a 0,6 Nm)
- Calibro del cavo Da 26 a 16 AWG
Supported Applications
The ACI Relative Humidity Outdoor Air series is a relative humidity transmitter designed for use with electronic controllers in commercial heating and cooling building management systems. The sensor utilizes a thermoset polymer capacitive sensing element with a factory-applied hydrophobic filter to provide resistance against moisture, dust, and other chemicals.
Operating Conditions & Performance
The series operates within an ambient temperature range of -40 to 140 °F (-40 to 60 °C) with a storage temperature range of -40 to 149 °F (-40 to 65 °C). The measurement range is 0-100% RH, while the operating humidity range is specified as 0 to 95% RH, non-condensing. Accuracy specifications vary by model configuration: +/- 1% over a 20% RH Range between 20 to 90%, or +/- 2% or 3% from 10 to 95%. The typical response time (T63) is 20 seconds, with stability listed as less than 2% drift / 5 years and repeatability of 0.5% RH.
Configuration Options
The series offers configurable output signals via integral DIP switches for field selection. The default configuration is a 2-wire 4-20 mA signal, with selectable options for 3-wire 0-5 VDC or 0-10 VDC outputs. Power supply requirements depend on the selected load and output type:
- 4-20 mA: 250 Ω Load requires 15 - 40 VDC / 18 - 28 VAC; 500 Ω Load requires 18 - 40 VDC / 18 - 28 VAC.
- 0-5 VDC: Requires 12 - 40 VDC / 18 - 28 VAC.
- 0-10 VDC: Requires 18 - 40 VDC / 18 - 28 VAC.
The series is available in two enclosure types:
- Euro (-EH) Enclosure: Constructed of ABS Plastic with UV Protectant (UL94-V0), featuring a gasketed cover and conformally coated circuit boards. The sensing tube material for -EH enclosures is 304 Series Stainless Steel.
- NEMA 4X (-4X) Enclosure: Constructed of Polystyrene Plastic (UL94-V2), rated NEMA 4X (IP 66). The sensing tube material for -4X enclosures is Schedule 40 PVC (White).
Electrical connections utilize screw terminal blocks that are polarity sensitive, accepting wire sizes from 16 AWG (1.31 mm²) to 26 AWG (0.129 mm²). An optional temperature sensor is available for monitoring space temperature.
Key Product Differences
Variants within the series are distinguished by accuracy class, enclosure style, and calibration certification:
- Accuracy Classes: Models include +/- 1% (RH1), +/- 2% (RH2), or +/- 3% (RH3) specifications.
- NIST Certification: Select models are available with a NIST Certificate providing three-point calibration verification. Default test points cover 20%, 50%, and 80%; specific configurations offer five points within a selected 20% range.
- Enclosure Dimensions: The Euro (-EH) enclosure measures approximately 4.30" (109.22 mm) in diameter with an overall length of 6.52" (165.67 mm). The NEMA 4X (-4X) enclosure has a top view dimension of 4.73" (120.14 mm) x 3.70" (93.98 mm).
PDF & Manuali
