WIKA 制冷和暖通用压力变送器 R-1 UL TZW GOST CRN认证 变送器

Electronic
pressure measurement

Pressure transmitter for refrigeration and air-conditioning
applications
Model R-1, with hermetically welded thin film measuring cell

Pressure transmitter model R-1
Fig. left: with M12 x 1 circular connector
Fig. centre: with Metri-Pack series 150
Fig. right: with cable outlet

   Applications
   

    Compressors
    Condensers

   Special features
   

    Wetted parts from stainless steel
    Resistant to all common refrigerants
    Special case design for the best possible condensation tightness
    Private labelling possible

    Description

   Application area in refrigeration and air-conditioningtechnology
    The model R-1 pressure transmitter has been optimally designed for the specific requirements of refrigeration and air-conditioning technology. Its monolithic construction dispenses with the need to use seals on the process side. This enables the model R-1 to be used with all typical refrigerants (e.g. Freon and Ammonia).

   Excellent reliability
    The hermetically-welded, dry, thin-film cell ensures long-term leak tightness. Moreover, these efficient cells, made with a sputtering technique, feature high long-term stability and a very high burst pressure.

    Attractive price/performance ratio
    The production on highly-flexible production lines, also offers a very attractive price-performance ratio with higher quantities.

    Measuring ranges

    Other measuring ranges on request

   Vacuum tightness
    Yes

    Output signals

Other output signals available on request

   Load in Ω
    Current output (2-wire):
      ≤ (power supply - 7 V) / 0.02 A
    Voltage output (3-wire):
      > maximum output signal / 1 mA
    Ratiometric output (3-wire):
      > maximum output signal / 1 mA

   Voltage supply

   Power supply
    The power supply depends on the selected output signal
      4 ... 20 mA: DC 7 ...30 V
      DC 1 ... 5 V: DC 8 ...30 V
      DC 0 ... 10 V: DC 14 ... 30 V
      DC 0.5 ... 4.5 V: DC 4.5 ... 5.5 V

    Reference conditions (per IEC 61298-1)

    Temperature
      15 ... 25 °C

   Atmospheric pressure
     860 ... 1,060 mbar

   Humidity
      45 ... 75 % relative

   Power supply
      DC 24 V

   Nominal position
      Calibrated in vertical mounting position with pressure
      connection facing downwards.

    Accuracy data

   Accuracy at reference conditions
      ≤ 2 % of span

    Including non-linearity, hysteresis, zero offset and end value deviation (corresponds to measured error per IEC 61298-2).

   Temperature error at -25 ... +85 °C
     Mean temperature coefficient of zero point:
         typical ≤ ±0.5% of span/10 K

    Process connections

    Electrical connections

   Short-circuit resistance
      S+ vs. 0V

   Reverse polarity protection
      UB vs. 0V

   Overvoltage protection
      maximum DC 36 V

   Insulation voltage
      DC 500 V

   Connection diagrams

   Materials

   Wetted parts
    Sensor and process connection from stainless steel

   Non-wetted parts
      Case from stainless steel
      Electrical connection from highly resistant, glass-fibre reinforced plastic PBT GF 30

   Approvals, directives and certificates

   Approvals
      cRUus (recognition)

   CE conformity
      EMC directive 2004/108/EC, EN 61326 emission (group 1, class B) and immunity (industrial application)

    Dimensions in mm
    Pressure transmitters

    Process connections