Kobold OPT User manual

Operating Instructions
for
Optical Level Sensor
Model: OPT

OPT
Page 2 OPT K09/0523
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.Process Connection M14 with Nut (OPT-..10) ..................................... 5
6.2.Process Connection G ½ (OPT-..22) ................................................... 5
7.Electrical Connection .................................................................................... 6
7.1.General Information ............................................................................. 6
7.2.Terminal Connection Diagrams ........................................................... 6
8.Technical Information .................................................................................... 8
9.Order Codes ................................................................................................. 8
10.Dimensions ................................................................................................... 8
11.Disposal ........................................................................................................ 9
12.EU Declaration of Conformance ................................................................. 10
13.UK Declaration of Conformity ...................................................................... 11
Manufactured and sold by:
Kobold Messring GmbH
Nordring 22-24
D-65719 Hofheim, Germany
Tel.: [phone]
Fax: [phone]
E-mail: [email protected]
Internet: www.kobold.com

OPT
OPT K09/0523 Page 3
2. Note
Please read these operating instructions before unpacking and putting the unit
into operation. Follow the instructions precisely as described herein.
The instruction manuals on our website www.kobold.com are always for currently
manufactured version of our products. Due to technical changes, the instruction
manuals available online may not always correspond to the product version you
have purchased. If you need an instruction manual that corresponds to the
purchased product version, you can request it from us free of charge by email
([email protected]) in PDF format, specifying the relevant invoice number and
serial number. If you wish, the operating instructions can also be sent to you by
post in paper form against an applicable postage fee.
Operating instructions, data sheet, approvals and further information via the QR
code on the device or via www.kobold.com
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.
When using the OEM designs (OPT - 0), the electromagnetic compatibility in the
plant must be demonstrated. The sensors themselves are not subjected to any
testing of this type.
3. Instrument Inspection
All 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:
 Optical Level Sensor model: OPT

OPT
Page 4 OPT K09/0523
4. Regulation Use
Any use of the Optical Level Sensor, model: OPT, which exceeds the
manufacturers 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 optical level sensors of model OPT have been developed for monitoring
transparent liquids. Due to the very small dimensions, very slight switching
hysteresis and high repeatability, the instruments are also suited for service in
small vessels. The optical sensor is situated in a robust housing. It comprises a
plastic hollow hemisphere, in which the infrared diode is fitted as a transmitter
and a semiconductor as a receiver. When the sensor is not wetted by liquid, the
infrared light is reflected fully from the surface of the hemisphere to the receiver.
As soon as the sensor is covered with liquid, the refractive index on the boundary
layer changes and most of the light escapes into the liquid. Less light then
reaches the receiver, which allows switching to take place. The level probe
should not be fitted with the sensor pointing downwards, as errors can occur due
to drops of liquid sticking to it.
6. Mechanical Connection
Before installation:
Make sure that the maximum operating pressures and temperatures allowed for
this device are not exceeded (see Fehler! Verweisquelle konnte nicht
gefunden werden.. Fehler! Verweisquelle konnte nicht gefunden werden.).
Avoid mounting the Optical Level Sensor vertically downward from the top of the
container cover. In this position, drops accumulating on the optical sensor can
cause the sensor to report an apparent, false, simulated level (switching point
reached).
Recommended mounting positions:
 On the side wall of the tank
 Vertically upward on the bottom of the tank

OPT
OPT K09/0523 Page 5
6.1. Process Connection M14 with Nut (OPT-..10)
Hole in the bottom of the tank:
 15 mm
The device is sealed with the
supplied O-ring.
6.2. Process Connection G ½ (OPT-..22)
Seal the device in the side of the
container with Teflon tape or similar
sealant.

OPT
Page 6 OPT K09/0523
7. Electrical Connection
7.1. General Information
Attention! Make sure that the voltage values of your system
correspond with the voltage values of the measuring unit.
Make sure that the supply wires are de-energised.
7.2. Terminal Connection Diagrams

OPT
OPT K09/0523 Page 7
Connection example OPT-4xxx with pulse relay MSR-010/MSR-020
Connection example OPT-5xxx with pulse relay MSR-010/MSR-020 and external
pullup resistor 4700 Ohm

OPT
Page 8 OPT K09/0523
8. Technical Information
Operating instructions, data sheet, approvals and further information via the QR
code on the device or via www.kobold.com
9. Order Codes
Operating instructions, data sheet, approvals and further information via the QR
code on the device or via www.kobold.com
10. Dimensions
Operating instructions, data sheet, approvals and further information via the QR
code on the device or via www.kobold.com

OPT
OPT K09/0523 Page 9
11. Disposal
Note!
 Avoid environmental damage caused by media-contaminated parts
 Dispose of the device and packaging in an environmentally friendly
manner
 Comply with applicable national and international disposal regulations
and environmental regulations.
Batteries
Batteries containing pollutants are marked with a sign consisting of a crossed-out
garbage can and the chemical symbol (Cd, Hg, Li or Pb) of the heavy metal that
is decisive for the classification as containing pollutants:
Cd1 Hg2 Pb3 Li4
1. „Cd" stands for cadmium
2. „Hg" stands for mercury
3. „Pb" stands for lead
4. „Li" stands for lithium
Electrical and electronic equipment

OPT
Page 10 OPT K09/0523
12. EU Declaration of Conformance
We, KOBOLD Messring GmbH, Hofheim-Ts, Germany, declare under our sole
responsibility that the product:
Optical Level Sensor model: OPT –4..., OPT –5... and OPT-6
to which this declaration relates is in conformity with the standards noted below:
EN 61000-4-4:2012
Electromagnetic compatibility (EMC) - Part 4-4: Testing and measurement
techniques - Electrical fast transient/burst immunity test, BURST 2 kV
EN 61000-4-2:2009
Electromagnetic compatibility (EMC) - Part 4-2: Testing and measurement
techniques - Electrostatic discharge immunity test, ESD 4 kV/8 kV
EN IEC 63000:2018 Technical documentation for the assessment of electrical
and electronic products with respect to the restriction of hazardous substances
Also, in conformance with the specifications in the following EEC directives:
2014/30/EU EMC Directive
2011/65/EU RoHS (category 9)
2015/863/EU Delegated Directive (RoHS III)
Hofheim, 23 May 2023
H. Volz M. Wenzel
General Manager Proxy Holder