Operating Instructions KDF-9/KDG-9
KDF-9/KDG-9 K04/0922
Page 8
6.1 Mounting / start-up
When starting up the flowmeter, the following points must be observed:
-
The variable-area flow meter must be installed perpendicularly (direction of flow from the bottom to the
top).
-
Take special care to install glass-tube devices free from strain.
-
The size of the product line to be connected must be identical to the size of the device connection.
-
All instruments are shipped with the valve installed at the inlet. By turning the glass tube resp. the fitting,
the valve also can be installed at the outlet.
-
E/F/A/B
(option diff.pressure regulator): When using gases, the version for a constant inlet pressure
with "valve at the top" and for a constant counter pressure with "valve at the bottom" should be used.
If liquids are involved, the position of the valve does not have any impact on the function of the meter.
-
Slowly
open the shut‐off valve upstream and downstream of the flowmeter.
-
When
measuring liquids, vent the pipes carefully.
-
When
measuring gases, increase pressure slowly.
-
Void
float impact (e.g. caused by solenoid valves), as this is likely to damage the measuring
section or float.
6.2 Ambient conditions
6.2.1 Ambient temperature ranges
-20°C to +100°C (with limit switch -20° +70°C)
(risk of breakage due to frost)
6.2.2 Storage temperature
-20°C to +100°C
6.2.3 Climatic category
Weather-protected and/or unheated locations
6.2.4 Degree of protection
IP65 (EN60529)
6.2.5 Shock resistance/vibration resistance
The meter should be protected from shocks and vibrations, which could cause damage.
6.2.6 Electromagnetic compatibility
Built in limit switch:
acc. NAMUR recommendation NE 21
Product standard: EN 60947-5-2: 2004
6.3 Fluid conditions
6.3.1 Fluid temperature ranges
without limit switch -20°C to + 100°C
with limit switch -20°C to + 70°C
(risk of breakage due to frost)
6.3.2 Fluid pressure limit
16 bar (at 20 degrees Celsius)
Important:
All pressure values are for non-hazardous liquids and for devices installed free from strain.
For
E/F/A/B,
(option differential pressure regulator)
the maximum unilateral pressure resistance of the
diaphragm is
7 bar
.
6.3.3 Inlet and outlet sections
Inlet and outlet sections are not required for a linear flow profile of the fluid.
6.3.4 Physical state:
Liquid or gaseous
6.3.5 Pressure for gas measurement