• Pressure switch with bourdon tube

Pressure switch with bourdon tube

for plants requiring special supervision, Type series BN4...


  • Pressure switch with bourdon tube for plants requiring special supervision,
  • Nominal ranges -1…0 bar to -1…24 bar,
    0…1 to 0…400 bar
  • High quality case with bajonet ring DN 100/160 per
    EN 837-1 S1, alternative safety version per
    EN 837-1 S3
  • Ex-proof design
  • Case and measuring element of stainless steel
  • Accuracy class as per DIN 16085
  • Inductive contact
  • EAC declaration (upon request)
  • Approvals/Certificates
    - Classification per SIL2
    - Certificate of measuring equipment for Russian Federation
    - Material certificate per EN 10204
    - Calibration certificate per EN 10204
  • Case with liquid filling
  • Oxygen free of oil and grease



Pressure switches with bourdon tubes are pieces of equipment with safety functions as set down in the Pressure Equipment Directive (PED). They are suitable for protecting the pressure device should the pressure rise above, or drop below, the approved boundary limits. They come under the remit of PED 1G Category IV and have been subjected to an EC type-examination. The requirements of Approval Certificate Pressure 100 from the German Technical Inspection Authority (VdTÜV) are met. These pressure measuring devices may only be operated with the electrical evaluation units set out below, and within the area of application of this certificate and the VdTÜV component identification number. The pressure switch is composed of the pressure measuring device and electrical evaluation unit. Because of its robust design, it is suitable for use in tough environments.



Application area

● General process technology
● Chemical and petrochemical industry
● Machinery construction
● Shipping

Type series