Yokogawa ADMAG AXR - Manual (Page 177)

<13. PED (PRESSURE EQUIPMENT DIRECTIVE)>
13-1
IM 01E30D01-01EN
This chapter describes further requirements and
notices concerning the PED (Pressure Equipment
Directive). The description in this chapter is prior to
other description in this User’s Manual.
(1) Technical Data
Module: H
Type of Equipment: Piping
Type of Fluid: Liquids and gas
Group of Fluid: 1 and 2
General-purpose Use/Explosion Proof Type:
MODEL
DN
(mm)
(*1)
PS
(MPa)
(*1)
PS · DN
(MPa ·
mm)
CATEGORY
(*2)
AXR025G/C 25 4 100
Article 3 (*3)
paragraph 3
AXR040G/C 40 4 160 II
AXR050G/C 50 4 200 II
AXR065G/C 65 2 130 II
AXR080G/C 80 2 160 II
AXR100G/C 100 2 200 II
AXR150G/C 150 2 300 II
AXR200G/C 200 2 400 III
*1: PS: Maximum allowable pressure for Flowtube
DN: Nominal size
*2: For details, see “Table 6 Covered by ANNEX II of EC
Directive on Pressure Equipment Directive 97/23/EC.”
*3: AXR025G/C is outside the scope of CE marking for PED.
(2) Installation
WARNING
• Tighten the bolts of the piping joints
according to the prescribed torque values.
• Take measures to protect the flowmeters
from forces caused by vibration channeled
through the piping.
(3) Operation
WARNING
• The instrument should be operated with the
temperature and pressure of the fluid under
normal operating conditions.
• The ambient temperature should be that of
normal operating conditions.
• Take measures to prevent excessive
pressure such as water hammer, etc. To
avoid water hammer prevent the pressure
from exceeding the PS (maximum allowable
pressure) by setting the system’s safety
valves, etc. appropriately.
• Should external fire occur, take safety
measures at the device itself or system-wide
prevent it having an effect on the flowmeters.
• Avoid using fluids exceeding the corrosion
proof limitations of the lining and electrodes.
• Take measures not to abrade the metal pipe,
and avoid abrading the lining by using fluids
such as slurry and sand are contained.
13. PED (PRESSURE EQUIPMENT DIRECTIVE)