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Bourdon Tube Pressure Gauge with One or Two fixed Switch Contacts - PGS21

Brand: WIKA Instruments Ltd.
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The model PGS21 switchGAUGE is a combination of a Bourdon tube pressure gauge and a pressure switch. It offers the usual analogue display, which can be read on-site irrespective of the power supply, and in addition the possibility to switch a potential-free electrical signal.
Features
  • High switching reliability and long service life. 
  • Design per EN 837-1. 
  • Switch contacts fixed to customer requirements. 
  • Increased ingress protection IP 65. 
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The model PGS21 switchGAUGE is a combination of a Bourdon tube pressure gauge and a pressure switch. It offers the usual analogue display, which can be read on-site irrespective of the power supply, and in addition the possibility to switch a potential-free electrical signal.
Features
  • High switching reliability and long service life. 
  • Design per EN 837-1. 
  • Switch contacts fixed to customer requirements. 
  • Increased ingress protection IP 65. 
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Specifications

Brand

Design

  • EN 837-1

Nominal Size in mm

  • 40, 50, 63 (double contact only with NS 50)

Accuracy Class

  • 2.5

Switch Point Tolerance

  • With double contact: ± 4 % of full scale value
  • With single contact: ± 2.5 % of full scale value
  • Factory-set

Scale Ranges

  • 0 to 2.5 to 0 to 400 ba

Pressure Limitation

  • Short time: Full scale value
  • Fluctuating: 2/3 x full scale value
  • Steady: 3/4 x full scale value

Permissible Temperature

  • Medium: +60° C maximum
  • Ambient: -20 … +60° C

Temperature Effect

  • When the temperature of the measuring system deviates from the reference temperature (+20° C): max. ±0.4 %/10 K of the span

Process Connection

  • NS 50, 63: G 1/4 B (male), 14 mm flats
  • NS 40: G 1/8 B (male), 14 mm flats
  • Copper Alloy, Lower Mount (LM) or Centre Back Mount (CBM)

Pressure Element

  • C-type or helical type
  • Copper alloy

Movement

  • Copper alloy

Dial

  • NS 63: Stainless steel, white
  • NS 40, 50: Aluminium, white

Pointer

  • Plastic, black

Case

  • Stainless steel

Window

  • Polycarbonate

Ingress Protection

  • IP 65 per EN 60529 / lEC 529 see also option, electrical connection via connector

Helium Leak Test

  • Leak rate 10-5 mbar*l/s

Electrical Data

  • Switching current: 5 ... 100 mA
  • Switching voltage: DC / AC 4.5 ... 24 V
  • Contact load: max. 2.4 W
  • Switch contact: Normally closed (NC) or normally open (NO) Double contact only with NS 50
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Typical Applications

  • Pressure gauge for indicating and monitoring the pressure in tanks and for signalling leaks
  • General industrial applications
  • Machine building
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