Optimass 8000 / 9000 Meter With Twin U Measuring Tubes; Specific Installation Guidelines; Ambient / Process Temperatures; Pressure Equipment Directive (Ped) Requirements - KROHNE OPTIMASS Series Handbook

1.4 OPTIMASS 8000 / 9000 Meter with Twin U Measuring Tubes

1.4.1 Specific Installation Guidelines

• Tighten flange bolts evenly.
• Do not stress the sensor mechanically. Clamp and support the connecting pipework accordingly.
• It is permissible to support the weight of the meter on the square body.
• Cavitation and Mechanical vibration should be avoided.
• Use of standard pipework reducers at the flange is allowed. Avoid extreme changes in pipe size
(step changes).
• The use of flexible hoses directly at the meter is not permitted.
• Installation below 0°C - mount vertically, or horizontally with converter up to prevent freezing or
condensation in housing.
Horizontal Mounting:
Liquids

1.4.2 Ambient / Process temperatures

The specified and approved ambient and process temperatures must be observed.
Process Safe Area
ATEX/FM/CSA -
Compact
ATEX/FM/CSA -
Remote
Compact
Ambient
Remote
Note:
Where meters are mounted in direct sunlight, it is recommended to install a sunshade. This is
particularly important in countries with high ambient temperatures.
The maximum differential temperature between the process and ambient temperature without insulation
is 80°C or 176°F.

1.4.3 Pressure Equipment Directive (PED) requirements.

To comply with the requirements of the PED in Europe, the following information is provided to assist the
plant engineer in installing the meter.
Measuring tube: Stainless SS 316L
Hastelloy C22
Flanges: SS316L
Casing: Stainless Steel 316
Typical burst pressure of case is in excess of 50 bar @ 20°C
Not PED approved
Insulation is strongly recommended above 100°C
For insulated meters without heating jackets, repeated heating or cooling at rates > 30°C per hour
should be avoided to increase operational lifespan of meter.
Gasses
8000
°C
-180 .. +230 -292 .. +446
-40 .. +190 -40 .. +374
-40 .. +230 -40 .. +446
-40 .. +55 -40 .. +130
-40 .. +60 -40 .. +140
Installation and Operating Instructions OPTIMASS
For liquids, measuring tube downwards so that
no gas collects in tube if no-flow.
For gasses, measuring tube upwards, so no
liquids can collect if no-flow.
°F °C
0 .. +350
-
-40 .. +60
Sealing Faces: Stainless SS 316L
Hastelloy C22
9000
°F
0 .. 662
-
-40 .. +140
30