Nominal Case Size (NCS)

   Accuracy
    Class 0.6 according to EN 837-1

   Pressure Ranges (EN 837-1)
    Version –1* = 0-0.6 ... 0- 600 bar or 0-10 psi ... 0-10,000 psi
    Version –3* = 0-0.6 ... 0-1,600 bar or 0-10 psi ... 0-30,000 psi
    Model RFChG 0-2.5 bar resp. 0-30 psi and up for all versions also vacuum and compound ranges (*see below)

   Protection Type (EN 60529 / IEC 529)
    Model RFCh: IP 54 / Model RFChG 160: IP 65

    Further inbation about advantages, specifications, temperature limitations and pressure ranges of test gauges can be found in our model overview 2000.

   Connection
    G ½ B (½" BSP), optionally ½" NPT, bottom connection (standard)
    or lower back connection (code letter r)

   Wetted Parts
    Ordering Code –1:Socket: = brass
                      Bourdon tube:
                      < 40 bar = bronze, C-b,
                        (<600 psi) soft soldered
                         60 bar = copper/beryllium, C-b,
                         (>800 psi) silver brazed
                      > 100 bar = 316 stainless steel (1.4571),
                        (>1,500 psi) helical, silver brazed
    Ordering Code –3: Socket: = 316 stainless steel (1.4571)
                       Bourdon tube:
                       < 40 bar =316 stainless steel (1.4571),
                       (<600 psi) C-b, argon arc welded
                       > 60 bar = 316 stainless steel (1.4571),
                       (>800 psi) helical, argon arc welded
                        > 1000 bar = NiFe alloy, helical,
                       (>15,000 psi) argon arc welded

   Movement
    Brass/German silver, low friction

   Dial
    Aluminum alloy, black figures, white background

   Case and Bayonet Ring
    304 stainless steel (1.4301)

   Case Filling
    Model RFChG 160 only: Glycerine

   Lens
    Version –3: laminated safety glass, version –1 single strength glass

    Optional Special Configurations
    • Test gauge Grade 3A ASME (± 0.25%), parallax-free mirror scale
    • Accuracy class 0.25 EN 837-1, with parallax-free mirror scale,
      for RFCh 250–1; for –3 and NCS 160 upon request
    • Zero adjustment by a turnable dial (± 5 scale graduations), knbed
      adjustment screw at the right side, for models RFCh 160, 250
    • Parallax-free mirror scale
    • Case size 100 (4") upon request
    • Process connection ¼" NPT or M 20 x 1,5, others upon request
    • Inlet port restrictor screw brass or stainless steel
    • Movement stainless steel with jewel bearing
    • Maximum indicating pointer, external adjustment, acrylic glass
      lens (pressure ranges > 2.5 bar or 30 psi)
    • Acrylic glass lens, or for version –1 laminated safety glass lens
    • Special scales, such as dual scales, e.g. bar/psi
    • Receiver gauge 0.2-1 bar or 3-15 psi
    • Top or side connection or installation not vertical, e.g. 90° to the
      right side (right side from a viewer's perspective)
    • Bleeding port at the tip of the Bourdon tube for models RFCh
    • Version –1, pressure ranges > 100 bar with Bourdon tube made
      of hardened, tempered alloy steel, C-b, screwed together
    • Wetted parts monel (ordering code –6) up to range 0-400 bar(6,000 psi)
    • Electrical accessories upon request