OTT PLS Operating instructions

English
Supplement to operating instructions
Pressure Probe OTT PLS
Plug-in pressure
probe cable

We reserve the right to make technical changes and improvements without notice.

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Table of contents
1 Scope of supply 4
2 Order numbers 4
3 Introduction 5
4 Please note – important information 5
5 Separating/inserting plug-in connection 5
6 Information on repair 7
7 Technical Data 7

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1 Scope of supply
䊳– 1 pressure probe with ceramic, capacitive relative pressure measuring cell and
plug-in, shielded, pressure probe cable with pressure compensation capillary
and Kevlar core for length stabilization. Pre-fabricated cable end with trans-
port protection against moisture. Optionally with 4 … 20 mA or RS-485 inter-
face (SDI-12 protocol)
– 2 protective caps (for covering the contacts when the plug-in connection is
separated)
– 1 operating instructions
– 1 supplement to operating instructions
– 1 factory acceptance test certificate (FAT)
2 Order numbers
䊳OTT PLS pressure probe with 63.037.002.3.0
plug-in pressure probe cable
Required ordering information
– Measuring range: 0 … 4 m;
0 … 10 m;
0 … 20 m;
0 … 40 m;
0 … 100 m
– Cable length: 1 … 200 m
– Interface: 4 … 20 mA;
RS-485 (SDI-12 protocol)
䊳Pressure probe 63.037.020.9.2
individual, without "pressure probe cable with connector";
Required ordering information
– Measuring range: 0 … 4 m;
0 … 10 m;
0 … 20 m;
0 … 40 m;
0 … 100 m
– Interface: 4 … 20 mA;
RS-485 (SDI-12 protocol)
Pressure probe cable with connector 63.037.021.9.2
Can be used universally for all measuring ranges/
interfaces. Required ordering information
– Cable length: 1 … 200 m
O-ring 0.926010.239
Protective cap 99.820.002.9.5
Replace-
ment parts
OTT PLS
plug-in type
OTT PLS
plug-in type

3 Introduction
The "OTT PLS plug-in type" is equipped with a plug-in pressure probe cable, in
contrast to the standard model. In the case of damage to the device, the pressure
probe can thus be replaced more easily and deinstalling the pressure probe cable
is not necessary. In the same way, during the initial installation, first the pressure
probe cable (without pressure probe) can be pulled into an empty pipe. The plug-
in pressure probe cable also simplifies maintenance work.
The function of the pressure compensation capillary is maintained by an axial air
permeability in the plug-in connection. The connection must only be carried out in
a dry state above the water! The OTT PLS version with SDI-12 interface is not
available with a plug-in pressure probe cable.
4 Please note – important information
䊳Only transport and store while connected and screwed together!
䊳Before separating the plug-in connection, carefully clean and dry the pressure
probe and connector.
䊳When disconnected, avoid the entry of contamination and damp. Always
cover the connector and pressure probe with the protective caps supplied.
䊳Protect the thread, O-ring, sealing surfaces and the contacts for the pressure
probe and connector from mechanical damage.
䊳Do not use any tools to separate/connect the plug-in connection.
Only loosen/tighten by hand.
䊳Do not apply force to the connector. Where necessary, use cable grip to pull
on the pressure probe cable.
䊳Do not push the connector sleeve off the connector body.
䊳Do not remove grease in the connector applied at the factory.
䊳If the pressure probe cable is not installed: always protect the prefabricated
cable end against the entry of damp using the supplied transport protection
container!
5 Separating/inserting plug-in connection
The principle installation of the OTT PLS plug-in type is carried out as described
in the "Operating instructions OTT PLS Pressure Probe". Only separate the plug-in
connection in situations where this is absolutely necessary (limited number of
connection cycles). The gray wire in the pressure probe cable (SDI-12 data) is
not present with the OTT PLS plug-in type. (Compare Fig. 3 of the operating
instructions.)
Caution! Danger of damaging the device:
Avoid the entry of damp or contamination into the pressure probe and connector
when separating/joining the plug-in connection! Damp entering the device can
condense in the pressure compensation capillary if there are temperature variations
and lead to unusable measurement results.
How to separate the plug-in connection:
䡵Remove the pressure probe from the water, clean thoroughly and dry.
䡵Hold the pressure probe tight and turn the connector counter-clockwise until
the pressure probe can be pulled off.
䡵Immediately put the supplied protective cap onto the connector and pressure
probe (if necessary, secure the protective cap with adhesive tape).
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Pressure probe cable
O-ring
Pressure
probe
Connector
(connector
sleeve on
connector
body)
Protective cap Coding lug
Protective cap Caution:
There must not be
a gap here when
connected and
screwed together
(as far as possible)!
Caution:
Avoid the entry of
damp and contamination
whendisconnected!
Put onprotective caps!
Coding lug

How to join the plug-in connection:
䡵If necessary: dry and clean the connector, pressure probe and protective cap*.
䡵Take the protective cap off the connector and the pressure probe.
䡵Check the O-ring on the pressure probe for damage and correct seating.
Replace O-ring if necessary* (spare part - temporarily cover the thread with
adhesive tape before replacement: danger of damage to the O-ring)
䡵Carefully put the connector onto the pressure probe, taking note of the
coding lugs.
䡵Hold the pressure probe tight and turn the connector clockwise as far as it
goes. Do not use a tool for this! There must be no gap between the connector
and the pressure probe.
* After cleaning/replacing the O-ring, regrease the interior of the plug-in connector (thread/sealing
surface/O-ring – omitting contacts) with suitable, standard grease for NBR materials (petroleum-based)
6 Information on repair
In the case of a device fault, particularly with variable measurement values and
measurement drift, please send the complete device including the pressure probe
cable for repair. A reliable fault diagnosis is only possible if both units are present.
7 Technical Data
Interfaces RS-485 (SDI-12 protocol)
4 … 20 mA; 2-wire (scaleable)
Dimensions
pressure probe L x Ø 222 mm x 22 mm
Weight
pressure probe approx. 0.325 kg
Material
Connector inserts PA 66
Connector contacts CuZn, gold plated/
CuSn, gold plated
Max. number of connection cycles 100
Protection class
disconnected pressure probe cable IP 40
connected pressure probe cable IP 68
max. submersion depth
(dependent on measuring range):
0 … 4 m ➝20 m
0 … 10 m ➝50 m
0 … 20 m ➝50 m
0 … 40 m ➝50 m
0 …100 m ➝120 m
max. submersion duration: unlimited time
All other data are identical to the standard OTT PLS version.
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OTT Hydromet GmbH
Ludwigstrasse 16
87437 Kempten · Germany
Tel. [phone]
Fax [phone]
[email protected] · www.ott.com
Document number
63.037.002.B.E 02-0511