WIKA 516.11 绝压表

   Service intended

    Measurement of absolute pressure excluding the effect of barometric pressure variation.
    Suitable for all clean ａnd dry gaseous media that will not attack copper alloy ａnd aluminium parts.

   Design
    Small compact design, varied possibility for installation, WIKA trade pattern DT-GM 87 10 226 Variable pressure entry

   Nominal size
    80 mm

   Accuracy class per EN 837-3 /6
    1.6

   Scale ranges per EN 837-3 /5
    Model 516.11: 0 ... 16 to 0 ... 1000 mbar absolute pressure
    Model 516.12: 0 ... 1.6 to 0 ... 16 bar absolute pressure.

   Working pressure
    Steady: full scale value
    Fluctuating: 0.9 x full scale value

   Overpressure safety
    Model 516.11: 1 bar absolute （atmospheric pressure） with all scale ranges
    Model 516.12: full scale value

   Operating temperature
    Ambient: -20 ... +60 °C
    Medium: +70 °C maximum

   Temperature error
    Additional error when temperature of the pressure element deviates from +20 °C
    Rising temperature: +0.3%/10 K of true scale value
    Falling temperature: -0.3%/10 K of true scale value

   Degree of protection
    IP 66 per EN 60 529 / IEC 529

   Standard features
    Pressure connection （exposed to pressure medium）
    Threaded entry per EN 837-1 /7.3
    G E female

   Pressure element （exposed to pressure medium）
    Model 516.11: Material Cu-alloy
    Model 516.12: Material stainless steel
    The pressure element is evacuated ａnd constitutes pressure datum

   Movement （exposed to pressure medium）
    Material: Cu-alloy

   Dial （exposed to pressure medium）
    White aluminium with black lettering

   Pointer （exposed to pressure medium）
    Black aluminium pointer

   Zero adjustment
    Adjusting provisions at case back （model 516.11）

   Case （exposed to pressure medium）
    Black aluminium. Case retains process pressure

   Window （exposed to pressure medium）
    Instrument glass

   Sealing rings （exposed to pressure medium）
    NBR （Buna rubber）

   Bezel ring
    Black aluminium

   Gauge mounting
    Requires mounting by means of rigid tailpipes, optionally threaded studs at case back.
    Panel mounting or surface mounting rings optionally available

   Optional extras
    Other pressure connection
    Mounting studs with bracket
    Panel mounting ring
    Surface mounting ring
    Male thread pressure entry
    Pressure entry with miniature flange DN 10/16 to DIN 28 403
    Radial pressure entry other than bottom

   Operating principle
    - The case machined from solid aluminium bar retaines the system pressure, whereas the pressure element of either the capsule or the bourdon tube type constitutes the zero pressure datum.
    - The particularly shaped capsule fully collapses to provide over-pressure safety independent of the scale range.
    - Any pressure applied is measured against the sealed pres sure datum to exclude the effect of ambient pressure variation.