Wherever the process pressure has to be indicated locally, and, at the same time, circuits are to be made or broken, the model 432.56 or 432.36 switchGAUGE can be used.

  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 extent of the scale range (see DIN 16085), and are
mounted predominantly below the dial, though also partly on top of the dial. The instrument pointer (actual value pointer) moves freely across the entire scale range, independent ofthe setting.

  The set pointer can be adjusted using a removable adjustment key in the window.

  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.

  The pressure gauge is manufactured in accordance with DIN 16085 and fulfils all requirements of the relevant standards (EN 837-3) and regulations for the on-site display of the working pressure of pressure vessels.

  As switch contacts magnetic snap-action contacts, reed switches, inductive contacts - for requirements to ATEX - or electronic contacts for triggering a PLC are available.

  For further information on the different switch contacts please
see data sheet AC 08.01.

  Standard version

  Nominal size in mm
  100, 160

  Accuracy class
  1.6

  Scale ranges
  0 ... 25 mbar to 0 ... 250 mbar (flange Ø 160 mm) 1)
  0 ... 400 mbar to 0 ... 40 bar (flange Ø 100 mm) 1)
  or all other equivalent vacuum or combined pressure and vacuum ranges

  Pressure limitation
  Steady: Full scale value
  Fluctuating: 0.9 x full scale value
  Overpressure safety
  40, 100 or 400 bar

  Permissible temperature
  Ambient: -20 … +60 °C

  Medium: +100 °C maximum

  Temperature effect
  When the temperature of the measuring system deviates from the reference temperature (+20 °C):
  max. ±0.8 %/10 K of full scale value

  Process connection with lower measuring flange
  Stainless steel 316L, G ½ B (male), 27 mm flats

  Pressure element
  ≤ 0.25 bar: Stainless steel 316L
  > 0.25 bar: NiCr-alloy (Inconel)

  Pressure chamber sealing
  FPM/FKM
  

  Movement
  Stainless steel

  Dial
  Aluminium, white, black lettering

  Pointer
  Instrument pointer: Aluminium, black
  Set pointer: red

  Case
  Stainless steel, gauges with liquid filling with compensating valve to vent case
  Model 432.56: with blow-out device
  Model 432.36: safety version with solid baffle wall and blow-out back

  Upper measuring flange
  ≤ 0.25 bar: Chrome steel
  > 0.25 bar: NiCr-alloy

  Window
  Laminated safety glass

  Bezel ring

  Cam ring (bayonet type), stainless steel

 Electrical connection
  Terminal box

  Ingress protection
  IP 54 per EN 60529 / IEC 529

 Switch contacts

 Magnetic snap-action contact model 821
  No control unit and no extra power supply required
  Direct switching up to 250 V, 1 A
  Up to 4 switch contacts per measuring instrument

  Inductive contact model 831
  Long service life due to non-contact sensor
  Additional control unit required (model 904)
  With corresponding control unit suitable for use in zone 1 /21 (2 GD) hazardous areas
  Low effect on the indication accuracy
  Fail-safe switching at high switching rates
  Insensitive to corrosion
  Up to 3 switch contacts per measuring instrument

 Electronic contact model 830 E
  For direct triggering of a programmable logic controller(PLC)
  2-wire system (option: 3-wire system)
  Long service life due to non-contact sensor
  Low effect on the indication accuracy
  Fail-safe switching at high switching rates
  Insensitive to corrosion
  Up to 3 switch contacts per measuring instrument

  Reed switch model 851
  No control unit and no extra power supply required
  Direct switching up to 250 V, 1 A
  Also suitable for direct triggering of a programmable logic controller (PLC)
  Free from wear as without contact
  Up to two change-over contacts per measuring instrument

  Switching function
  The switching function of the switch is indicated by function index 1, 2 or 3.
  Model 8xx.1: Contact makes (clockwise pointer motion)
  Model 8xx.2: Contact breaks (clockwise pointer motion)
  Models 821.3 and 851.3: Change over; one contact breaks and one contact makes simultaneously when pointer reaches set point
  

  For further information please see data sheet AC 08.01, electrical switch contacts

  Options
  Other process connection
  Sealings (model 910.17, see data sheet AC 09.08)
  Liquid filling (models 433.56, 433.36, ingress protection IP 65)
  Vacuum safe to -1 bar
  Max. medium temperature +200 °C
  Higher indication accuracy, class 1.0
  Open connecting flanges per DIN/ASME from DN 15 to DN 80 (preferred nominal widths DN 25 and 50 or DN 1" and 2"; see data sheet IN 00.10)
  Wetted parts made of special materials, high overpressure safety up to 10 bar(flange Ø 160 mm) or 40 bar (flange Ø 100 mm): PTFE (models 452.56, 452.36), Hastelloy, Monel, nickel, tantalum, titanium (accuracy class 2.5)
  Inductive contacts also in safety version (SN, S1N)

  Special version

 Model 432.36, high overpressure safety up to 400 bar
  Scale ranges:
  0 ... 25 mbar to 0 ... 250 mbar (flange Ø 190 mm)
  0 ... 400 mbar to 0 ... 40 bar (flange Ø 120 mm)
  Flange connecting screws: Steel, corrosion-protected

CE conformity

  Pressure equipment directive
  97/23/EC, PS > 200 bar, module A, pressure accessory

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

  ATEX directive 1)
  94/9/EC, II 2 G Ex ia IIC

  Approvals 1)
  ATEX, Design approval for connection to hazardous zone 0
  GOST, metrology/measurement technology, Russia
  GOST-R, import certificate, Russia
  KOSHA, ignition protection type „i“ - intrinsic safety, South Korea
  CRN, safety (e.g. electr. safety, overpressure, ...), Canada

 Certificates 1)
  2.2 test report per EN 10204 (e.g. state-of-the-art manufacturing, material proof, indication accuracy)
  3.1 inspection certificate per EN 10204 (e.g. material proof
wetted parts metal component, indication accuracy)

 1) Option
  Approvals and certificates, see website