WIKA 74.830E 帶電接點(diǎn)的汽包式溫度計(jì) 不銹鋼 用于無(wú)菌技術(shù) IP65

Gas-actuated thermometer with switch contacts
For sanitary applications
Model 74, stainless steel version

Gas-actuated thermometer with switch contact, model 74
with liquid damping and VARIVENT® connection

  Applications
   ■ Food industry
   ■ Sanitary applications
   ■ Bio and pharmaceutical industry

  Special features
   ■ Dead-space free, hygienic version
   ■ Aseptic process connections
   ■ Material and surface finish quality in accordance with pharmaceutical industry directives and standards
   ■ Gauges with inductive contact for use in hazardous areas with ATEX approval

  Description
   This series of thermometers has been designed as an addition to the standard range of thermometers in order to meet the special requirements of the food, bio and
pharmaceutical industries as well as in the paints and varnishes industry.
   The model 74 gas-actuated thermometer is ideally suited to fulfil the high standard requirements of sanitary applications.Based on a third party verification, the thermometer complies with the 3-A standard 74-03 and is marked by us accordingly.
   Stem and case are made of stainless steel.The surface of the wetted parts is polished, and a wide variety of process connections is available to ensure the
optimal adaptation to many different process requirements.The stem is free of dead space.

   Switch contacts （electrical alarm contacts） make or break an electric control circuit dependent upon the position of the instrument pointer. The switch contacts are adjustable over the full measuring range.

   The instrument pointer actual value pointer） moves freely across the entire scale range, independent of the setting.The set pointer can be adjusted via the window using a removable adjustment key （mounted on the terminal box）.
   Switch contacts consisting of several contacts can also be set to a single set point. Contact actuation is made when the actual value pointer travels beyond or below the desired set point.
   For switch contacts, sliding and magnetic snap-action contacts, reed contacts, inductive contacts - for requirements to ATEX - or electronic contacts for PLC switching are available.

  Standard version
   Measuring principle
   Gas-pressure inert gas filling, physiologically safe

   Nominal size in mm
   100

  Process connection
  ■ VARIVENT® connection
     for pipes DN 40 to DN 125 and 1 ½" to 4", PN 25
  ■ NEUMO BioControl®
     size 50 （mounting diameter 50 mm） for pipes DN 25 to
     DN 100, PN 16 or
     size 65 （mounting diameter 68 mm） for pipes DN 40 to
     DN 100, PN 16
  ■ Grooved union nut DIN 11851, DN 40, PN 40 or DN 50,
     PN 25
  ■ Tri-clamp, DN 1 ½", PN 40 or DN 2", PN 40

  Instrument version
  ■ Back mount （axial）
  ■ Lower mount （radial）

  Indication accuracy
   DIN 16196

  Working range
   Normal （1 year）: Measuring range （DIN 16196）
   Short time （24 h max.）: Scale range （DIN 16196）

  Rated operating ranges and conditions
   DIN 16196

  Temperature sensor
  Wetted parts 1.4435 stainless steel
  Diameter 21 mm
  Length 30 mm

  Surface of the wetted parts
  Ra ≤ 0.8 μm

 Case
  Stainless steel 1.4301

 Bezel ring
  Cam ring （bayonet type） bezel, stainless steel 1.4301

 Dial
  Aluminium, white, black lettering
 

  Window
  Laminated safety glass

  Pointer
  Aluminium, black, adjustable pointer

 Electrical connection
  Terminal box

 Temperature limits for storage and transport
  -50 … +60 °C without liquid damping
  -20 … +60 °C （EN 13190） with liquid damping

  Permissible ambient temperature at case
  0 … 40 °C max. （others on request）

  Permissible working pressure at the temperature
sensor
  max. 25 bar, static

 Ingress protection
  IP 65 per EN 60529 / IEC 529