TELEDYNE OLDHAM SIMTRONICS WB INTERFACE User manual

NP32V2EN Revision D.0
NPMWBEN Revision A.0
WB INTERFACE
WB/4-20mA CONVERTER

WB Interface
WB/4-20mA CONVERTER
USER MANUAL
II
NPMWBEN
Revision A.0
User Manuals in other languages are available on Website
https://teledynegasandflamedetection.com
Copyright June 2021 by TELEDYNE OLDHAM SIMTRONICS S.A.S. All rights reserved. The
reproduction of all or any section of this document in any form whatsoever without the written
permission of TELEDYNE OLDHAM SIMTRONICS S.A.S. is forbidden.
The information contained in this manual is accurate to our knowledge. As a result of continuous
research and development, the specifications of this product may be modified at any time without
prior notice.
TELEDYNE OLDHAM SIMTRONICS S.A.S.
Rue Orfila
Z.I. Est – CS 20417
62027 ARRAS Cedex

WB Interface
WB/4-20mA CONVERTER
USER MANUAL
NPMWBEN
Revision A.0
III
Table of contents
1General Information.....................................................................................1
1.1 User Manual..................................................................................................... 1
1.2 Symbols used................................................................................................... 1
1.3 Safety Instructions .......................................................................................... 2
1.4 Important Information.................................................................................. 2
1.5 Liability Limits.................................................................................................... 3
1.6 Warranty ........................................................................................................... 3
1.7 Destruction of the
equipment ....................................................................................................... Erreu
r ! Signet non défini.
2PRESENTATION..................................................................................................4
2.1 Purpose of the MX32v2 controller............................................................. 4
3MOUNTING THE CENTRAL UNIT................................................................5
4CENTRAL UNIT ELECTRICAL CONNECTIONS ....................................6
4.1 DC supply......................................................................................................... 6
4.2 Flammable sensors ........................................................................................ 7
4.3 The 4 / 20 mA output.................................................................................... 7
5Digital Modules ................................................................................................8
5.1 Switching on.................................................................................................... 8
5.2 Switching off.................................................................................................... 8
5.3 Settings .............................................................................................................. 8
6Technical Specifications............................................................................11
7Cleaning and maintenance...................................................................12
7.1 Cleaning ........................................................................................................... 12
7.2 Fuse replacement .......................................................................................... 12
8Certificate of Compliance.......................................................................13

WB Interface
WB/4-20mA CONVERTER
USER MANUAL
IV
NPMWBEN
Revision A.0

WB Interface
WB/4-20mA CONVERTER
USER MANUAL
NPMWBEN
Revision A.0
1
1General Information
WARNING: ALL INDIVIDUALS WHO HAVE OR WILL HAVE
RESPONSIBILITY FOR USING, MAINTAINING, OR SERVICING THIS
PRODUCT MUST READ THIS ENTIRE MANUAL CAREFULLY. FAILURE TO
USE THIS EQUIPMENT PROPERLY COULD RESULT IN SERIOUS INJURY
OR DEATH.
1.1 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
TELEDYNE OLDHAM
SIMTRONICS
for additional information.
The aim of this manual is to supply simple and accurate information to the user . TELEDYNE
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,
TELEDYNE 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 TELEDYNE OLDHAM
SIMTRONICS.
1.2 Symbols used
Icon
Significance
This symbol indicates useful additional information.
This symbol indicates: Earth ground connection.
This symbol denotes: Protective earth terminal. A cable of the adequate diameter
must be connected to ground and to the terminal having this symbol.

WB Interface
WB/4-20mA CONVERTER
USER MANUAL
2
NPMWBEN
Revision A.0
Icon
Significance
This symbol denotes: Attention! 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.
This symbol indicates: You must refer to the instructions.
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 authorize d
products that is accessible when you acquire a new product of the same type.
1.3 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).
Cables with an operating temperature of 70°C minimum (158 °F)
must be used
because the temperature inside the controller can reach 70°C (158 °F).
1.4 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.

WB Interface
WB/4-20mA CONVERTER
USER MANUAL
NPMWBEN
Revision A.0
3
1.5 Liability Limits
Neither TELEDYNE 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
MX32v2 controller, 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
TELEDYNE
OLDHAM SIMTRONICS
has been informed of such damage.
1.6 Warranty
Under normal conditions of use and on return to the factory, parts and workmanship carry a one
year warranty, excluding consumables such as backup power supplies, audio and visible alarms ,
etc.
1.7 Waste Electrical and Electronic Equipment (WEEE
directive)
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.

WB Interface
WB/4-20mA CONVERTER
USER MANUAL
4
NPMWBEN
Revision A.0
2PRESENTATION
2.1 Purpose of the MX32v2 controller
The WB interface is:
•equipped with a compact (58x105x90 mm) "NORYL" case. Clipping on to a standardised
symmetrical DIN rail, it can easily be integrated into an electrical cabinet;
•equipped with two identical measuring channels;
•equipped, for each channel, with an analog input (supply of steady current delivering a
signal in mV to a catalytic sensor) and a corresponding 4 to 20 mA current output;
•the elements required for use are grouped together on the front of the apparatus:
- at the top for the settings and tests (Figure 1/Ref.1),
- on the FRONT panel for the indicator lights (Figure 1/Ref.2),
- at the bottom for the connections (Figure 1/Ref.3).
Figure 1

WB Interface
WB/4-20mA CONVERTER
USER MANUAL
NPMWBEN
Revision A.0
5
3MOUNTING THE CENTRAL UNIT
The WB interface is mounted on its symmetrical DIN rail and can be fitted in any enclosed
electrical cabinet without the need for any special installation.
It must be installed in a room away from explosive atmospheres, etc.).

WB Interface
WB/4-20mA CONVERTER
USER MANUAL
6
NPMWBEN
Revision A.0
4CENTRAL UNIT ELECTRICAL
CONNECTIONS
The electrical connection must be made by a specialist and comply with the regulations in force.
It must conform to standard NF C 15-100.
The wires to be connected to the WB interface will have a maximum section of 2.5 mm². The WB
interface is powered with a 24 V direct current (DC) supply
4.1 DC supply
24 Volt supply
The 24 Volt supply can be connected to the points marked 0 and 24 V - - - on the terminal block
(see , Ref.1).
The cable must have a minimum section of 1.5 mm².
Consumption: max. 15 W (sensors connected).
Figure 2

WB Interface
WB/4-20mA CONVERTER
USER MANUAL
NPMWBEN
Revision A.0
7
4.2 Flammable sensors
•Only “Wheatstone bridge” type flammable sensors can be connected to the WB
interface. The following sensor types may be used: CAPTEX, CEX 300, OLC20, OLC50,
etc
•Terminals C1, C2 and C3 of the WB interface and the sensors will be connected facing
each other as shown in
•The maximum loop resistance is 16 ohms.
Example: the maximum distance between the WB interface and the sensors will be 500 m with
1.5 mm² section conductors.
4.3 The 4 / 20 mA output
The 4/20 mA output of each measuring channel will be able to be connected to an
appropriate central measuring unit.
The maximum impedance of the current loop will be 500 ohms.
The WB interface is linked to the central unit using a shielded cable with two active
conductors. The shielding will be grounded at one end only.
The connections will be made as shown in Figure 3.
Figure 3

WB Interface
WB/4-20mA CONVERTER
USER MANUAL
8
NPMWBEN
Revision A.0
5Digital Modules
5.1 Switching on
It is firstly ascertained that all connections are made and that the entire installation
complies with the current standards in force.
As soon as the WB interface is powered up, it is ready for use and the GREEN light-emitting diode
is lit (Figure 1, Ref. 4)
5.2 Switching off
The device is switched off essentially by shutting down the power supply at an electrical cabinet.
The green LED goes out.
5.3 Settings
The handling and setting operations described in this section are intended strictly
for authorised persons only as they are liable to affect the safety of the detection
function.
Figure 4

WB Interface
WB/4-20mA CONVERTER
USER MANUAL
NPMWBEN
Revision A.0
9
5.3.1 Setting the zero
•Necessary when changing sensor.
•At least once yearly and according to use.
•Connect a voltmeter to the two studs provided (MF and MES), as shown in Figure 4Relay
modules
If in the course of setting, you wish to
inhibit the alarms on the central measuring
unit
(relay), flick the maintenance switch (of the channel concerned) up (Figure 4,
ref. 1 and ref. 2) which will block the corresponding 4/20 mA output
at 2 mA
and the
amber “TEST” LED
will light up (rep7,Figure 4)
Once the settings are complete, remember to put the switch back to the normal
position
•Make sure that the atmosphere is gas free (if this is not the case, air needs to be injected).
•Adjust the ZERO using the ZERO potentiometer: Fig. 4, Ref. 3 (channel 1) or Fig. 4, Ref. 4
(channel 2). The voltmeter should read “40 mV”.
•N.B. Once set, the corresponding 4 / 20 mA output will deliver 4 mA (maintenance switch
in“normal” position).
5.3.2 Adjusting the gas span
• Necessary when changing sensor.
• At least once yearly and according to use.
• Connect a voltmeter to the two studs provided (MF and MES), as shown in Figure 4.
• Prepare the calibration kit and attach the gas infeed pipe to the sensor.
• Set the calibration gas flow to 60 l/h before injecting.
• Inject the gas: to achieve a correct setting, OLDHAM recommends using a
content at least equal to 30% of the scale (30% LEL of the gas concerned).
• Wait at least 30 seconds for the reading to stabilise.
• Adjust the span using the Span potentiometer: Figure 4, Ref. 5 (channel 1)
or Figure 4, Ref. 6 (channel 2). The voltmeter should now read “xx mV”
according to the concentration of theinjected gas (see example below).
Once set, and with the gas, the corresponding 4 / 20 mA output will deliver xx
mA.
(maintenance switch in “normal” position)
Maintenance
(
↑
Up)
Normal

WB Interface
WB/4-20mA CONVERTER
USER MANUAL
10
NPMWBEN
Revision A.0
REMINDERS:
- Calibration gas used = methane (CH4)
- LEL of CH4 = 5%
- Content used = 2.5% CH4 (50% LEL)
- Therefore the value to be set and read on the voltmeter will be: U = 40 mV + 160 mV x
2.5/5 = 40 mV + 80 mV = 120 mV
In this specific case, once set, and with the gas, the 4 / 20 mA output will deliver 12 mA
(maintenance switch in “normal” position).
When the settings are complete:
•stop the gas injection
•remove the gas infeed pipe
•check that the signal returns to ZERO (40 mV on the voltmeter)

WB Interface
WB/4-20mA CONVERTER
USER MANUAL
NPMWBEN
Revision A.0
11
6Technical Specifications
Manufacturer:
OLDHAM
Type:
INTERFACE WB
Function:
4…20 mA converter for explosive gas sensors in a
Wheatstone bridge
Capacity:
1 or 2 sensors
Measurement
Measurement
Continuous
Display None
Visual alarms
Sensor 1 test: amber
Sensor 2 test: amber
Electrical power supplies
DC
21.5 to 30Vdc
Consumption
15W
Protection
fuse
Measurement line
Cable
3 conductors
Maximum line length 500 m (with 1.5 mm² conductor)
Maximum loop resistance 16 ohm
Mechanical
Mounting
On symmetrical DIN rail
Various
Technology
SMC (Surface-Mounted Components)
Mains power indicator
Green LED
Case
NORYL
Warranty
1 year
Dimensions
58x105x90 mm
Weight 0.360Kg
Case protection IP30
Conditions of use
Ambient temperature
+10 °C to + 45 °C
Humidity
5 % to 95 % uncondensed
Altitude
≤ 2000 metrers

WB Interface
WB/4-20mA CONVERTER
USER MANUAL
12
NPMWBEN
Revision A.0
7Cleaning and maintenance
7.1 Cleaning
Do not use alcohol- or ammonia-based liquids to clean the controller. If necessary, clean the
exterior of the enclosure with a damp cloth.
7.2 Fuse replacement
Fuse replacement should only be performed by qualified personnel and power must
be first switched off.
Fuses shall comply with IEC 60127 standard (time-delay fuse, low breaking capacity, 250Vac).
Procedure:
•remove the rear cover from the unit by pushing aside the four clips at the corners of the
housing,
•extract the circuit from the housing,
•change the fuse shown in Figure 5/Ref. 1,
•refit all parts
Figure 5
Description
PN
Fuse (1,25A- 250Vac) 6154624

WB Interface
WB/4-20mA CONVERTER
USER MANUAL
NPMWBEN
Revision A.0
13
8Certificate of Compliance
The document hereafter (1 page) reproduces the EU declaration of conformity.

WB Interface
WB/4-20mA CONVERTER
USER MANUAL
14
NPMWBEN
Revision A.0

WB Interface
WB/4-20mA CONVERTER
USER MANUAL
NPMWBEN
Revision A.0
15

www.teledynegasandflamedetection.com
© 2021 Teledyne Oldham Simtronics. All right reserved.
NPMWBEN Revision A.0. / June 2021
AMERICAS
14880 Skinner Rd
CYPRESS
TX 77429,
USA
Tel.: [phone]
EMEA
Rue Orfila
Z.I. Est – CS 20417
62027 ARRAS Cedex,
FRANCE
Tel.: [phone]
ASIA PACIFIC
Room 04
9th Floor, 275 Ruiping
Road, Xuhui District
SHANGHAI
CHINA
Tel.: [phone]