Yokogawa ADMAG AXR - Manual (Page 157)

12-5
IM 01E30D01-01EN
<12. OUTLINE>
Grounding Ring/Grounding Electrode;
• Grounding Ring (plate type)
Stainless steel-JIS SUS316 (AISI 316 SS/EN
1.4401 equivalent), Stainless steel-JIS SUS316L
(AISI 316L SS/EN 1.4404 equivalent), Hastelloy *1
C276 equivalent
• Grounding Electrode (electrode type) *2
Fluorocarbon PFA lining + grounding electrode
(Tantalum, Platinum-Iridium)
*1: Hastelloy is a registered trademark of Haynes Interna-
tional Inc.
*2: The permeable fluids (such as nitric acid, hydrofluoric
acid, or sodium hydroxide at high temperature) are
unusable.
Gasket;
Use General-purpose Use/
Explosion Proof Type
Standard
Grounding ring
No gasket within Flowtube
Optional
code
(GA, GC,
or GD)
Grounding ring
Gasket within Flowtube
Gasket Material (within Flowtube)
GA: Fluororubber for PVC pipes (Viton®)
GC: Acid-resistant fluororubber for PVC
pipes (Viton®)
GD: Alkali-resistant fluororubber for PVC
pipes (Viton®)
Use General-purpose Use/
Explosion Proof Type
Optional
code
(BCF, BSF,
BCC, or
BSC)
Grounding ring
Flange of user’s pipe Gasket for
user’s flange
Gasket Material (for user’s flange)
BCF, BSF: PTFE-sheathed non-asbestos
BCC, BSC: Chloroprene rubber
Recommended Gaskets Between Flowtubes And
Unser’s Flanges:
Gaskets Type
Use compressed non-asbestos fiber gaskets,
PTFE-sheathed non-asbestos gaskets or gaskets
which have equivalent elasticity.
For optional codes GA, GC, and GD, use rubber gas-
kets or others which have equivalent elasticity.
Gaskets Size
Be sure to choose a gasket with an inner and outer
diameter that does not protrude inside the piping
(refer to item of Inner Diameter Of Grounding Ring,
Outer Diameter For Effective Sealing).
If the inner diameter of the gasket is too large, or
outer diameter of the gasket is too small, fluid leak-
age may result.
Inner Diameter of Grounding Ring, Outer Diameter
for Effective Sealing;
Lay length code 1 (Flange, Wafer type); Unit: mm (in.)
Size
Inner diameter of
Ground ring [øA]
Outer diameter for ef-
fective sealing [øB]
25 (1.0) 28 (1.10) 53 (2.09)
40 (1.5) 41 (1.61) 71 (2.80)
50 (2.0) 53 (2.09) 84 (3.31)
65 (2.5) 66 (2.60) 103 (4.06)
80 (3.0) 77 (3.03) 114 (4.49)
100 (4.0) 102 (4.02) 140 (5.51)
150 (6.0) 146.1 (5.75) 190 (7.48)
200 (8.0) 193.6 (7.62) 240 (9.45)
Lay length code 2 (Wafer type); Unit: mm (in.)
Size
Inner diameter of
Ground ring [øA]
Outer diameter for ef-
fective sealing [øB]
25 (1.0) 28 (1.10) 53 (2.09)
40 (1.5) 41 (1.61) 71 (2.80)
50 (2.0) 53 (2.09) 84 (3.31)
65 (2.5) 66 (2.60) 103 (4.06)
80 (3.0) 77 (3.03) 114 (4.49)
100 (4.0) 102 (4.02) 140 (5.51)
150 (6.0) 140.7 (5.54) 190 (7.48)
200 (8.0) 188.9 (7.44) 240 (9.45)
Electrode Construction:
Internal insertion type
n HAZARDOUS AREA CLASSIFICATION
Refer to Chapter 14.