Oldham OLCT10N Manual de usuario
x
P/N : NPO10NGB
Rev A
Digital
Transmitter
OLCT10N
2OLCT10N
Manual
Copyright 2010 by Industrial Scientific – Oldham S.A.S
First edition, English version
All rights reserved. No reproduction of all or part of this document, in any
form, is permitted without the written consent of Industrial Scientific –
Oldham S.A.S.
All of the information that is provided in this document is accurate to the best
of our knowledge.
As a result of continuous research and development, the specifications of
this product may be changed without prior notice.
Industrial Scientific Oldham S.A.S
Rue Orfila
Z.I. Est – BP 20417
F–62027 ARRAS Cedex
Tel.: +33 (0)3 21 60 80 80
Fax: +33 (0) 3 21 60 80 00
3
Contents
Chapter 1 | Presentation.........................................................6
Composition of the detector .......................................................................6
Type of detector available..........................................................................7
Chapter 2 | Installation............................................................8
Regulations and conditions of use .............................................................8
Location of the detector..............................................................................8
Detector positioning ...................................................................................8
Connection .................................................................................................9
Configuration of communication ..............................................................10
Scope of use ............................................................................................12
Chapter 3 | Maintenance.......................................................13
Frequency of maintenance ......................................................................13
Automatic calibration................................................................................14
Sensor replacement .................................................................................17
Manual calibration ....................................................................................18
Chapter 4 | Part numbers and accessories......................... 20
Chapter 5 | Spare Parts.........................................................22
Chapter 6 | Declaration of EC conformity ...........................23
Chapter 7 | Specifications .................................................... 25
Detector....................................................................................................25
Sensor specifications ...............................................................................26
Line length (use with MX43) ....................................................................26
4OLCT10N
Manual
Thank you for choosing this OLDHAM instrument.
All of the necessary actions have been taken in order to ensure your complete
satisfaction with this equipment.
It is important that you read this entire manual carefully and thoroughly.
The extent of our responsibility
INDUSTRIAL SCIENTIFIC OLDHAM shall not be held responsible for any
damage to the equipment or for any physical injury or death resulting in whole
or in part from the inappropriate use, installation, or storage of the equipment,
which is the result of not complying with the instructions and warnings, and/or
with the standards and regulations in force.
INDUSTRIAL SCIENTIFIC OLDHAM does not support or authorize any
business, person, or legal entity in assuming responsibility on behalf of
INDUSTRIAL SCIENTIFIC OLDHAM, even though they may be involved in the
sale of INDUSTRIAL SCIENTIFIC OLDHAM products.
INDUSTRIAL SCIENTIFIC OLDHAM shall not be responsible for any damage,
direct or indirect, or for damages and interest, direct or indirect, resulting from
the sale and use of any of its products UNLESS SUCH PRODUCTS HAVE
BEEN DEFINED AND CHOSEN BY INDUSTRIAL SCIENTIFIC OLDHAM
FOR THE USE THAT THEY ARE INTENDED.
Ownership clauses
The drawings, specifications, and information herein contain confidential
information that is the property of INDUSTRIAL SCIENTIFIC OLDHAM.
This information shall not, either in whole or in part, by physical, electronic, or
any other means whatsoever, be reproduced, copied, divulged, translated, or
used as the basis for the manufacture or sale of INDUSTRIAL SCIENTIFIC
OLDHAM equipment, or for any other reason without the prior consent of
INDUSTRIAL SCIENTIFIC OLDHAM.
5
Warning
This is not a contractual document. In the best interest of its customers and
with the aim of improving performance, INDUSTRIAL SCIENTIFIC OLDHAM
reserves the right to alter the technical features of its equipment without prior
notice.
READ THESE INSTRUCTIONS CAREFULLY BEFORE THE FIRST USAGE:
these instructions should be read by all persons who have or will have
responsibility for the use, maintenance, or repair of the instrument.
This instrument shall only be deemed to be in conformance with the published
performance if used, maintained, and repaired in accordance with the
instructions of INDUSTRIAL SCIENTIFIC OLDHAM by INDUSTRIAL
SCIENTIFIC OLDHAM personnel or by personnel authorized by INDUSTRIAL
SCIENTIFIC OLDHAM.
Guarantee
Under normal conditions of use and on return to the factory, parts and
workmanship are guaranteed for 3 years, excluding such consumables as
sensors, filters, etc.
Destruction of the equipment
European Union (and EEA) only. This symbol indicates that, in
conformity with directive DEEE (2002/96/CE) and according to local
regulations, this product may not be discarded together with household
waste.
It must be disposed of in a collection area that is set aside for this purpose, for
example at a site that is officially designated for the recycling of electrical and
electronic equipment (EEE) or a point of exchange for authorized products in the
event of the acquisition of a new product of the same type as before.
6OLCT10N
Manual
Chapter 1 | Presentation
Purpose
The OLCT10N is a digital detector designed to detect a particular gas depending
on the type of sensor used.
Composition of the detector
An OLCT10N detector comprises the following elements:
Rep. Description
1. Enclosure
2. Cable gland
3. PCB
4. Sensor
5. Terminal
6. Gas input
7. Led
8. Cover
7
050
Figure 1 : component parts of an OLCT10N.
Type of detector available
Gas Range
Oxygen (O2) 0-30% vol
Carbone monoxide (CO) 0-300 ppm
0-1000 ppm
Hydrogen sulfide (H2S) 0-30 ppm
0-100 ppm
Nitrogen monoxide (NO) 0-100 ppm
0-300 ppm
Nitrogen dioxide (NO2) 0-10 ppm
0-30 ppm
Ammonia (NH3) 0-100 ppm
0-1000 ppm
8OLCT10N
Manual
Chapter 2 | Installation
Regulations and conditions of use
The sensor in the transmitter should always be in contact with the ambient air.
Therefore:
- Do not cover the detector.
- Do not paint the detector.
- Avoid dust.
Location of the detector
Depending on the density of the gas to be detected or the application, the detector
shall be positioned at the ground level, or on the ceiling at the same height as the
airflow, or near to the air extraction ducts. Heavy gases may be detected at the
ground level, while light gases will be found at ceiling height.
Detector positioning
The detectors shall preferably be positioned in an accessible place to facilitate the
operations of inspection and maintenance as well as the absolute safety of the
operators. The detectors must not be obstructed by anything that will prevent
them from measuring the ambient environment to be checked.
The detector shall be installed with the cable gland pointing downwards.
For explosive gas detectors only, any tilt of more than 45° from the vertical will
lead to an inaccurate measurement.
9
Figure 2 : OLCT10N dimensions
Connection
RS485 transmission
There are two cable entries on the OLCT10N, one entry is for the input signal and
one is for the output signal – this is used for digitally connecting multiple
transmitters on a single line to the MX43 Controller.
The digital modules are linked by 2 twisted cable pairs of 4 x 0.22 m² minimum,
type MPI-22A, nominal resistance of 120 Ohms. This cable carries the RS485 (A
and B) signal on one pair and the power supply of the modules (0–24 VDC)
connected to the line on the other pair. The + 24 VDC, 0V, A, B terminals are
respectively connected to +24VDC, 0V, A, B terminals of the other modules on the
line and then to the connector of the corresponding line on the central unit. The
cable shielding must be connected to the grounding rod of the MX43.
At the end of the busbar, the 120-Ohm end of line resistor (EOL
RESISTOR/RESISTANCE F.D.L) must be activated (switch n°8 must be set to ON, cf
fig 5).
No portion of the bare end of the terminal wires should be visible. For protection
against any electromagnetic disturbances, the data as well as screen wires (or
braids) must be cut as short as possible.
10 OLCT10N
Manual
Before connecting the detector to the control unit, please inhibit any installation
alarms to avoid unexpected triggering during operation.
*
Connecting is made according to the following schematic:
Figure 3 : principle of connecting modules on a MX43 line.
Configuration of communication
Detector address
All the digital modules on a line must be
identified by a unique address.
Switches 1 to 5 of the configuration block of
each module make it possible to establish
an address number (1 to 32) in binary
mode.
In the illustration to the right, the address 9
(10010) has been defined.
The Addressing Table below lists the
possible combinations.
004
Figure 4 : Switches of
address configuration.
The connection of the cable between the detector and central unit should be
made with the power off. The site should be at equal potential
MX43 line terminal
Ground
Terminal
Detector terminal
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