Kobold RCD Operating Manual
Operating Instructions
for
Differential Pressure
Flow Meter / Monitor
Model: RCD-...
RCD
1. Contents
1. Contents ........................................................................................................ 2
2. Note .............................................................................................................. 3
3. Instrument Inspection .................................................................................... 3
4. Regulation Use .............................................................................................. 4
5. Operating Principle ........................................................................................ 4
6. Mechanical Connection ................................................................................. 4
6.1. Check Service Conditions .................................................................... 4
6.2. Installation ............................................................................................ 5
7. Electrical Connection .................................................................................... 6
7.1. Mechanical Pointer Indication (..Z...) ................................................... 6
7.2. Compact Electronics: (..C30R, ..C30M, ..C34P, ..C34N) .................... 6
7.3. ADI Electronic ...................................................................................... 6
8. Commissioning .............................................................................................. 6
8.1. Mechanical Pointer Indication (..Z...) ................................................... 6
8.2. Setting Compact Electronics ................................................................ 6
8.3. Setting ADI Electronic .......................................................................... 6
9. Maintenance ................................................................................................. 7
10.Technical Information .................................................................................... 7
10.1. Sensor Data ......................................................................................... 7
10.2. Displays/Electronics ............................................................................. 7
11.Order Details ................................................................................................. 9
12.Dimensions ................................................................................................. 11
13.EU Declaration of Conformance .................................................................. 12
Manufactured and sold by:
Kobold Messring GmbH
Nordring 22-24
D-65719 Hofheim
Tel.: +49(0)6192-2990
Fax: +49(0)6192-23398
E-Mail: info.de@kobold.com
Internet: www.kobold.com
page 2 RCD K07/0818
RCD
2. Note
Please read these operating instructions before unpacking and putting the unit
into operation. Follow the instructions precisely as described herein.
The devices are only to be used, maintained and serviced by persons familiar
with these operating instructions and in accordance with local regulations
applying to Health & Safety and prevention of accidents.
When used in machines, the measuring unit should be used only when the
machines fulfil the EC-machine guidelines.
as per PED 2014/68/EU
In acc. with Article 4 Paragraph (3), "Sound Engineering Practice", of the
PED 2014/68/EU no CE mark.
Pipe
Diagram 7
group 1
no dangerous fluids
RCD-..05 - RCD..30 Art. 4, § 3 Art. 4, § 3
RCD-1135, RCD-1140 Art. 4, § 3 Cat. I
RCD-1235, RCD-1240 Cat. I Cat. II
RCD-1145, RCD-1150 Art. 4, § 3 Cat. I
RCD-1245, RCD-1250 Cat. I Cat. II
RCD-1155, RCD-1160, RCD-1165 Cat. I not deliverable
RCD-1260, RCD-1265 Cat. I Cat. II
dangerous fluids
3. Instrument Inspection
Instruments are inspected before shipping and sent out in perfect condition.
Should damage to a device be visible, we recommend a thorough inspection of
the delivery packaging. In case of damage, please inform your parcel service /
forwarding agent immediately, since they are responsible for damages during
transit.
Scope of delivery:
The standard delivery includes:
Differential Pressure Flow Meter / Monitor model: RCD
Operating Instructions
Diagram 6
group 2
RCD K07/0818 page 3
RCD
4. Regulation Use
Any use of the Differential Pressure Flow Meter / Monitor, model: RCD, which
exceeds the manufacturer’s specification may invalidate its warranty. Therefore
any resulting damage is not the responsibility of the manufacturer. The user
assumes all risk for such usage.
5. Operating Principle
The Kobold Flow Meter is used for measuring and monitoring the flow velocity of
liquids and gases. The device works in accordance with the well-known principle
of the Venturi nozzle. A small pressure difference proportional to the flow is
produced by the flowing medium at a cross-sectional constriction (nozzle) in the
device housing. The shape of the nozzle is based on the particular flow value
whereby flow characteristic remains constant over the entire measuring range.
Pressure sensing ports are located in the flow body to measure the resulting
differential pressure and send it to a differential-pressure measuring cell fitted in
the display case. If the flow is exceeded, the differential-pressure measuring cell
is protected by mechanical stops. In the case of mechanical displays the flow rate
measured by the differential pressure measuring cell is indicated on a pointer
element which is calibrated in l/min water or Nm3/h air. On electronic displays the
mechanical motion is converted to an electrical signal by a Hall sensor. The
electronics serves to display and monitor the volumetric flow.
6. Mechanical Connection
6.1. Check Service Conditions
Flow
Max. operating pressures
Max. operating temperature
Medium
Mounting position
When the medium is not in our substance database:
operating density
operating viscosity
page 4 RCD K07/0818
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