Oldham ctx 300 User manual

User manual
CTX 300
Analogic Gas Detector
Part Number: NP300GB
Revision: N.0
04/2019→
The Fixed Gas Detection Experts
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2
CTX 300
User manual
Copyright 2019 by Oldham Simtronics S.A.S.
April 2019
All rights reserved. No reproduction of all or part of this document, in any
form, is permitted without the written consent of Oldham Simtronics S.A.S.
All information 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.
Oldham Simtronics S.A.S
Rue Orfila
Z.I. Est –CS 20417
F –62027 ARRAS Cedex
Tel : [phone]
Fax: [phone]
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Contents
3
Contents
Chapter 1 | General Information ..............................................5
User Manual...............................................................................................5
Symbols used.............................................................................................5
Safety instructions......................................................................................6
Important information.................................................................................6
Liability limits..............................................................................................7
Chapter 2 | Introduction ...........................................................9
General Information ...................................................................................9
Composition .............................................................................................10
Chapter 3 | Installation and connection................................11
Installing the detectors .............................................................................11
Electrical connections ..............................................................................13
Chapter 4 | Powering up and use ..........................................19
Powering up .............................................................................................19
4-20 mA analog output.............................................................................20
Chapter 5 | Maintenance ........................................................21
Calibration................................................................................................21
Replacing a sensor ..................................................................................29
Disposal....................................................................................................29
Chapter 6 | Spare parts ..........................................................31
CTX/COX 300 toxic or oxygen sensors ...................................................31
CSC 300 semiconductor sensors.............................................................35
Chapter 7 | Certification .........................................................37
Chapter 8 Technical specifications.......................................41
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CTX 300
User manual
Chapter 9 | Annex...................................................................45
Indications for calibrating the CTX 300 SC..............................................45
CTX 300 overview....................................................................................46
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1 –General information
5
|
Chapter 1 |General Information
User Manual
The instructions given in this manual must be read thoroughly before installation and
start-up, particularly those concerning the points related to the safety of the end-user.
This user manual must be made available to every person involved in the activation,
use, maintenance, and repair of the unit. The information, technical data, and diagrams
contained in this manual are based on the information that is available at a given time.
In case of doubt, contact Oldham Simtronics for additional information.
The aim of this manual is to supply simple and accurate information to the user.
Oldham Simtronics cannot be held liable for any misinterpretations in the reading of
this manual. In spite of our efforts to produce an error-free manual, it may nonetheless
contain some unintentional technical inaccuracies.
In the client’s interest, Oldham Simtronics reserves the right to modify the technical
characteristics of its equipment to increase their performance without prior notice. The
present instructions and their content are the inalienable property of Oldham
Simtronics.
Symbols used
Icon
Significance
This symbol indicates useful additional information.
This symbol indicates:
This equipment must be connected to ground.
This symbol indicates:
Protective earth terminal. A cable of the adequate diameter must be
connected to ground and to the terminal having this symbol.
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CTX 300
User manual
This symbol indicates:
You must refer to the instructions.
This symbol indicates:
Warning! In the present mode of use, failure to adhere to the
instructions preceded by this symbol can result in a risk of electric
shock and/or death.
European Union (and EEA) only. This symbol indicates that this product
must not be discarded with household waste, as per the EEA directive
(2002/96/EC) and your own national regulations.
This product must be disposed of at a collection point that is reserved for
this purpose, for example, an official site for the collection of electrical and
electronic equipment (EEE) in view of their recycling, or a point of
exchange for authorized products that is accessible when you acquire a
new product of the same type.
Any deviation as regards these recommendations for the disposal of this
type of waste can have negative effects on the environment and public
health, as these electric and electronic products generally contain
substances that can be dangerous. Your full cooperation in the proper
disposal of this product promotes a better use of natural resources.
Safety instructions
Labels intended to remind you of the principal precautions of use have been placed on
the unit in the form of pictograms. These labels are considered an integral part of the
unit. If a label falls off or becomes illegible, please ensure it is replaced. The
significance of the labels is detailed below.
The installation and electrical connections must be carried out by qualified
personnel according to the instructions of the manufacturer and the
standards of the competent authorities.
Failure to adhere to the instructions can have serious consequences on the
safety of persons. Please be extremely rigorous as regards electricity and
assembly (coupling, network connections).
Important information
The modification of the material and the use of parts of an unspecified origin shall
entail the cancellation of any form of warranty.
The use of the unit has been projected for the applications specified in the technical
characteristics. Exceeding the indicated values cannot in any case be authorized.
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1 –General information
7
Liability limits
Neither Oldham Simtronics nor any other associated company under any
circumstances can be held liable for any damage, including, without limitations,
damages for loss or interruption of manufacture, loss of information, defect of the MX
43 control unit, injuries, loss of time, financial or material loss, or any direct or indirect
consequence of loss occurring in the context of the use or impossibility of use of the
product, even in the event that Oldham Simtronics has been informed of such damage.
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CTX 300
User manual
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2 - Introduction
9
Chapter 2 |Introduction
General Information
CTX300 gas detectors are designed to measure toxic gases, CO2or vapors and
oxygen. With robust materials, a specifically-adapted design, appropriate
accessories, stainless bolts and a polyamide case (IP54), CTX 300 detectors are
designed to withstand the roughest conditions.
Figure 1: overview of a CTX 300 with display (left) and without display (right).
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CTX 300
User manual
Composition
Sensor type
CTX 300
Toxic
Oxygen
CO2
Semi-
conductor
Gases detected
Common toxic
gases detected.
Oxygen.
CO2
-Combustible
gas.
- Solvents.
-Some
Freons.
Detection
method
Electrochemical
sensors (1).
Electrochemical
sensor.
Infrared
absorption.
Semiconductor
sensor.
Type of sensor
pack
Pre-calibrated
removable
sensor pack (2).
Pre-calibrated
removable
sensor pack:
0-30% scale or
0-100% volume.
Pre-calibrated
removable
sensor pack
(2).
Removable
sensor pack,
not pre-
calibrated.
Options
With display.
With display.
With display.
Certification
None.
None
None
None
(1) Specific to each gas.
(2) Choice between several scales.
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3 - Installation and connection
11
Chapter 3 |Installation and connection
Installing the detectors
Layout
While the measuring sensor is always located on the underside of the detector, several
factors determine where the detector should be located:
■If the gas being measured is lighter than the air, place the detector near the ceiling.
■If the gas is heavier than the air (CO2and Freons, for example) place the detector
close to the floor.
■Near offtake points.
■Generally, in locations where gas may accumulate, taking into consideration both:
- The effects of temperature;
- The outside winds direction.
Determining the best sensor location
Factors to consider when determining the best placement for the detector are:
■Potential sources for vapor and gas emissions.
■Characteristics of gases and vapors (density).
■Air circulation:
- Inside: mechanical or natural ventilation.
- Outside: wind direction and velocity.
■Effects of temperature.
■Local constraints (air flow, water splash, etc.).
Detectors should always be located in an easily accessible location for maintenance
purposes.
Special accessories may be necessary to protect the equipment against any liquid
projectiles, dust, direct sunlight or low temperatures in the area.
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CTX 300
User manual
Mechanical installation
Figure 2: overall dimensions of the CTX 300.
Figure 3: drilling diagram for wall mounting (view of the side flatten onto the ceiling).
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3 - Installation and connection
13
Figure 4: ceiling mounting with a brace. The fixing drawing is identical to this of the wall
mount.
Ref.
Qty
Description
Code
Material
1
1
Brace
6132380
Stainless
2
4
Washer A25 ACCD
6905518
Stainless
3
4
Screw CHC LI2
6902218
Stainless
Electrical connections
Wiring specifications
If needed, consult the grounding instructions for Oldham Simtronics instruments and
related connection materials in Annex 1.
Connections for the various types of sensors
Wire
CTX 300(TOX/OX)
withdisplay
CTX 300(TOX/OX)
without display
CTX 300 SC
without display
Output signal
4-20 mA
4-20 mA
4-20 mA
Active wires
3
2
3
Cable entry
1 x 6-11 mm
1 x 6-11 mm
1 x 6-11 mm
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CTX 300
User manual
Wire
CTX 300 CO2
withdisplay
CTX 300 CO2
without display
Output signal
4-20 mA
4-20 mA
Active wires
3
3
Cable entry
1 x 6-11 mm
1 x 6-11 mm
Connection of a 3-wire sensor to an Oldham Simtronics control unit
Wire
Terminal number
(+) V DC power supply:
3
(-) V DC power supply (masse 0 V):
2
Output signal:
1
Figure 5: connection of a 3-wire sensor to an Oldham control unit.
Connection of a 2-wire sensor to an Oldham Simtronics control unit
Wire
Terminal number
(+) V DC power supply:
3
Output signal:
1
Both wires are the 4-20 mA 2-wire loop.
Figure 6: connection of a 2-wire sensor to an Oldham Simtronics control unit.
Control unit
Detector
Control unit
Detector
+24 VDC
Signal
+24 VDC
0V
Signal
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3 - Installation and connection
15
Connection of a 3-wire CTX300 sensor to a non-Oldham Simtronics control unit
with an internal power supply
Figure 7: Connection of a 3-wire CTX300 sensor to a non-Oldham Simtronics control
unit.
(R) Maximal load = 200 Ω.
(A) Power supply 15 ≤ Vcc ≤ 32.
18 ≤ Vcc ≤ 30 for CO2sensor.
I max = 130 mA.
Connection of a 2-wire 4-20mA sensor to a non-Oldham Simtronics control unit
and to an internal power supply
Figure 8: Connection of a 2-wire 4-20mA sensor to a non-Oldham Simtronics control
unit.
(A) Power supply 15< VCC<32V. I max = 30 mA.
Other control
unit
Detector
+24 VDC
0V
Signal
Other control
unit
Detector
+24 VDC
Signal
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CTX 300
User manual
Operating mode
CTX300 with display
■Remove the 4 screws (ref. 1).
■Remove the cover (ref. 2).
Figure 9
■Completely remove the screw (ref. 4).
■Unscrew the screw a few turns
(ref. 3).
Figure 10
■Turn the display circuit as shown
(ref. 5).
■Connect the cable (ref. 6) to the
connector. Refer to paragraph
Connections for the various types of
sensors on page 13.
■Return the display circuit to its original
position and replace the cover.
Figure 11
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3 - Installation and connection
17
CTX 300 without display
■Unscrew the 4 screws (ref. 1).
■Remove the cover (rep. 2).
■Proceed to wire the sensor according
to the terminal location.
Figure 12
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CTX 300
User manual
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4 –Powering upand use
19
Chapter 4 |Powering up and use
Powering up
■The sensor turns on when connected
to a power supply.
■If the sensor has a display, the green
LED will be lit (ref. 2) and a value will
appear on the display screen (ref. 1).
Figure 13
In case of a problem with CTX 300 SC, verify that the maintenance switch (ref. 1),
located on the main circuit, is in the MES (measure) position.
Figure 14: CTX 300 SC main circuit board.
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CTX 300
User manual
4-20 mA analog output
For CTX 300 sensors, the 4-20 mA output current is proportional to the gas level.
The various states of the 4-20 mA output are:
■1 mA to indicate a fault.
■Between 4 and 20 mA for measurement values.
■≥ 20 mA if levels exceed measurement range.
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