Oldham Surveyor 4B Installation guide

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IN NS ST TA AL LL LA AT TI IO ON N, , O OP PE ER RA AT TI IN NG G A AN ND D
M
MA AI IN NT TE EN NA AN NC CE E M MA AN NU UA AL L

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OLDHAM SA
GAS AND FLAME DETECTION
STACK GAS AND DUST MONITORING
We thank you for choosing an OLDHAM SA instrument.
We have taken every step to ensure that this equipment continues to give
you complete satisfaction.
Please read the instruction manual carefully before using the instrument.

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LIMITS OF RESPONSIBILITY
* OLDHAM SA hereby rejects any and all responsibility with regard to any person for material
damage, bodily injury or death resulting in whole or in part from the inappropriate use,
installation or storage of its equipment not conforming to the instructions and to warnings and/or
not conforming to standards and regulations in force.
* OLDHAM SA does not allow or authorize any company, person or legal entity to assume such
responsibility on the part of OLDHAM SA, even if involved in the sale of the products of
OLDHAM SA.
* OLDHAM SA shall not be liable for any direct or indirect damage, or any direct or indirect
legally awarded damages resulting from the sale and use of any of its products, UNLESS
THOSE PRODUCTS WERE SPECIFIED AND CHOSEN BY OLDHAM SA FOR THE
USE MADE OF THEM.
OWNERSHIP CLAUSES
* Sketches, drawings, specifications and data included herein contain confidential information
which is the property of OLDHAM SA.
* These information shall not be, in part or in whole, physically, electronically or in any other form
whatsoever, reproduced, copied, divulged, translated, used as a basis for the manufacture or sale
of OLDHAM SA equipment or used for any other reason without the prior approval of
OLDHAM SA.
WARNINGS
* This document is not a contractually binding document, OLDHAM SA reserves the right to
make any changes, without notice, to the technical characteristics of its equipment in order to
improve performance levels, in the interest of its customers.
* CAREFULLY READ THE INSTRUCTIONS BEFORE ALL FIRST USE:
This instruction manual must be read by any person who is, or will be, responsible for the use,
maintenance or repair of this equipment.
* This equipment will conform with the specified performance levels only if it is used,
maintained and repaired in accordance with the directives of OLDHAM SA and by
OLDHAM SA personnel or personnel authorized by OLDHAM SA.

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Warnings
This manual must be read carefully before installing and starting up and, in particular, care
must be taken to observe the points concerning the safety of the equipment for intermediate
or end users.
Installation must be performed and electrical connections made by qualified personnel in
accordance with the manufacturer's instructions and with the standards specified by the
relevant authorities.
Failure to comply with instructions can have serious consequences for the safety of
personnel. An absolutely rigorous approach is required, especially as concerns electricity
and fitting (connections and connection to the power network).
Any modification of the equipment or the use of parts not specified as original
manufacturer's parts could lead to the cancellation of any form of warranty.
The data logger is intended to be used for one or more applications specified in the technical
characteristics.
The values indicated must not be exceeded in any circumstances.
This is not a contractually binding document. In the interest of its customers, OLDHAM
reserves the right to make any changes, without notice, to the technical characteristics of its
equipment in order to improve performance levels.
Warning signs
Protective earth terminal
Caution: risk of electric shocks
Caution (See accompanying documents)

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Contents
I. DESCRIPTION 7
II. MOUNTING OF THE SURVEYOR 4B 7
III. CONNECTIONS 8
3.1. Alternative power supply 8
3.2. DC power supply 8
3.3. Explosimetric detectors 9
3.4. External components 10
3.5. Examples of installation 10
3.5. Examples of installation 11
IV. OPERATING INSTRUCTIONS 13
4.1. Switching on 13
4.2. Switching off 13
4.3. Alarms 13
4.3.1. GAS alarm 13
4.3.2. FAULT alarms 14
4.4. Adjustments 14
4.4.1. Adjusting the "gas alarm" thresholds 14
4.4.2. Adjusting the ZERO 16
4.4.3. Checking the sensitivity 16
4.5. Replacing the fuse 18
V. TECHNICAL SPECIFICATIONS 19
5.1. Technical characteristics 19

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I. DESCRIPTION
Surveyor 4B is equipped with a small "NORMAL" box (58 x 105 x 90 mm). It can be snap-fastened
onto a standard symmetrical DIN rail and is easily integrated in an electric equipment cabinet.
The components used in operation are located on the front of the appliance:
-adjustments and tests on the top (item 1),
-indicator lights on the FRONT face (item 2),
-connections at the bottom (item 3).
II. MOUNTING OF THE SURVEYOR 4B
The surveyor 4B appliance fitted on its symmetrical DIN rail can be installed in a box in any
electrical equipment cabinet and has no special installation requirements.
The Surveyor 4B can be installed in safe area only.
It should preferably be located in a monitored location (such as a guardhouse, control room or
instrumentation room).
FIGURE 1
Item 1
Item 2
Item 3

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III. CONNECTIONS
Electrical connections must be made by a specialist and must comply with the regulations in force.
They must also be in conformance with standard NF C 15-100.
The nature of the current and line voltage must be checked. The line voltage must match the voltage
specified on the plate fitted on the Surveyor 4B. The voltage is configured in the factory.
The wires to be connected to the Surveyor 4B must have a minimum cross section of 1.5 mm².
The Surveyor 4B appliance can be supplied with either 230 V ~ 1or 12 V ---2.
3.1. Alternative power supply
230 volt AC power supply
The Surveyor 4B must be protected on the upstream side by a two-pole earth leakage circuit breaker
(1A).
The response curve must be of type D.
The mains power supply must be wired on the two points marked N (Neutral) and P (Phase) on the
Surveyor 4B terminal block (see Fig 2, item 1).
Power consumption: 5 VA max. (detector connected).
3.2. DC power supply
12-volt power supply
The 12-volt power supply can be connected to the points marked 0 and 12 V on the Surveyor 4B
terminal block (see Fig. 2, item 2).
The cable must have a minimum cross section of 1.5 mm².
Power consumption: 4 W max. (detector connected).
1From 207 to 242 V AC
2From 11.5 to 14 V DC
Item 1 Item 2
FIGURE 2

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3.3. Explosimetric detectors
•Only explosimetric detectors of the "bridge" type can be connected to the S4B.
The detector must be of type CAPTEX, CEX300, CEX800 or CEX810.
•Surveyor 4B and the detector are connected together by a shielded cable with three active
conductors. The shielded cable is to be connected to the earth at one end only.
•Terminals C1, C2 and C3 of Surveyor 4B and the detector are to be connected in opposite mode
(see Fig. 3).
•The maximum loop resistance is 1.4 ohms.
For example: the maximum distance between Surveyor 4B and the detector will be 40 m with
conductors with a cross section of 1.5 mm².
•In some cases, Surveyor 4B can be fitted with two explosimetric detectors via an
interconnection box. This box must always be placed as near as possible to the two detectors and
the maximum distance is determined by the following formula:
MAX. distance = L1 +2 (L2 + L3)
3
2
1
Detector terminal
FIGURE 3
4 conductors
"CAPTEX" detectors, for example
JUNCTION BOX
L1
L 2
L 3
FIGURE 4
4 conductors
3 conductors
Detector 2
Detector 1

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Caution: If you add a detector to an existing installation, the link between terminals 1 and 4 must be
broken on each detector.
3.4. External components
Surveyor 4B is equipped with the following two relays.
•Relay 1 (REL 1), which is in "positive safety" mode, corresponds to the first gas alarm threshold
and to the "FAULT" alarm.
This relay is equipped with SPDT contacts available on the S4B terminal block (item 3, Fig. 5).
•Relay 2 (REL 2), which is "negative safety" mode, corresponds to the second gas threshold
only. This relay is also equipped with SPDT contacts available on the S4B terminal block (item
4, Fig. 5).
NB: The relay contacts are dry contacts, corresponding to the appliance without power supply.
Caution: The high-power solenoid valves cannot be directly remote controlled 3. A power relay is
required.
3The maximum current through the relay contacts will be 2 A and the maximum voltage will be
240 V ~ or 60 V ---.
Item 3 Item 4
FIGURE 5

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3.5. Examples of installation
Example of installation set up of a SV4B
with two detectors
SV 4B
0
+
Fuse
Fuse or circuit breaker
Life
NEUTRAL
C
Cl lo os se ed d s so ol le en no oi id d v va al lv ve e s st ta at tu us s d di is sp pl la ay y l li ig gn nt t
Gas valve closed *
*Breaking capacity of rating relays switch contact : 120VA ou 30W
Important:
The relay's contacts are shown on the SV4B label, unit switch off.
The AL1/ DEF relays are normally energized and the AL2 relay is unenergized.
Telephone dialer
C1 C2 C3
To a phone network line
Connection box
1 2 3
1 2 3 4 1 2 3 4
1
2
3
4
4
3
2
1
Detector A
Detector B

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Example of installation set up of a SV4B
with a single detector.
SV 4B
0
+
Fuse
Fuse or circuit breaker
LIFE
NEUTRAL
C
C
l
l
o
o
s
s
e
e
d
d
s
s
o
o
l
l
e
e
n
n
o
o
i
i
d
d
v
v
a
a
l
l
v
v
e
e
s
st ta at tu us s d di is sp pl la ay y l li ig gn nt t
Gas valve closed *
*Breaking capacity of rating relays switch contact : 120VA ou 30W
Important:
The relay's contacts are shown on the SV4B label, unit switch off.
The AL1/ DEF relays are normally energized and the AL2 relay is unenergized.
Telephone dialer
C1 C2 C3
To a phone netwok line
Detector
1 2 3

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IV. OPERATING INSTRUCTIONS
4.1. Switching on
It is assumed that all the necessary connections have been made and that the whole installation
complies with the standards currently in force.
As soon as the S4B is supplied with power, it is ready to use and the GREEN light-emitting diode
lights up (item 1, Fig. 6).
Relay 1 is operated ("positive safety" position).
4.2. Switching off
The S4B is switched off by cutting off the power supply on an electrical equipment cabinet.
4.3. Alarms
4.3.1. GAS alarm
The S4B has two adjustable GAS alarm thresholds but the second threshold (AL 2) must be twice
the first (AL 1).
Therefore, the red light-emitting diodes "AL1" and "AL2" (item 3, Fig. 6) come on as soon as the
alarm thresholds are exceeded (time delay of 7 seconds): LED flashing. The audio alarm (buzzer) is
activated and the corresponding relays are tripped.
Item 1
Item 2
Item 3
FIGURE 6

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4.3.2. FAULT alarms
The S4B is equipped with a fault alarm (visual alarm (item 2, Fig. 6), audio alarm and relay 1)
which is activated in the following cases:
•One or more wires of the telemetry line interrupted,
•One or more wires of the telemetry line short-circuited or with excessive power consumption.
NB: The ALARM LEDs may also be activated depending on the circumstances of the
interruption or the short circuit.
4.4. Adjustments
Caution: The operations and adjustments described in this chapter must be performed by authorized
personnel only as they can affect the appliance's reliability in detection.
4.4.1. Adjusting the "gas alarm" thresholds
Using a "reference gas kit" (gas cylinder + pressure regulator, etc.), inject the reference gas with a
content level higher than the first threshold desired. (For example, threshold 1 will be 20% LEL, so
a minimum of 25% LEL should be injected).
Adjust the alarm potentiometer (item 1, Fig. 7) to trigger the first threshold (AL1): the red LED
(AL1) flashes (for 7 seconds) and then remains on in steady mode, trip the corresponding alarm
relay.
Item 1
FIGURE 7
Item 3 Item 4Item 2
Item 5

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If you stop at this point, alarm 2 will be set to twice the level of alarm 1.
If you continue until alarm 2 is triggered: alarm 1 will be set to half the level of alarm 2.
If you wish to lock the alarm relays (inhibiting the relays) during these alarm threshold adjustments:
set the maintenance switch to the high position (item 2, Fig. 7).
(
Caution: When the adjustments have been made, do not forget to place the switch back in its
normal position.
Terminal posts (item 3, Fig. 7) are used to connect up a voltmeter for the reading of a signal (in
mV) corresponding to the content level of the injected gas.
Then, using a rule of three, it is possible to calculate and adjust another signal (in mV) for an alarm
threshold (potentiometer: item 1, Fig. 7) corresponding to a different gas content level.
For example: when you inject 1% methane, you read 1,000 mV (for instance).
If you set the alarm potentiometer to read 1,500 mV, the alarm is triggered at 1.5%
methane.
Signal= 1000 15%
1% 1500
mVx mV .=
Or
Threshold (%) = 1% 1500
1000 15%
xmV
mV =.
4.4.1.1. Acknowledgement of gas alarms
A switch (item 4, Fig. 7) is used to acknowledge gas alarms in manual mode4or automatic mode 5.
(
Remark: As long as there is a high enough concentration of gas to trigger an alarm, it is
impossible to clear that alarm manually (with the Ack. button).
4Manual mode: When a gas alarm is triggered, it must be cleared manually even if the content level has fallen to zero
(or to below the threshold). This is done by pressing the Ack. key (item 5, Fig. 7).
5Automatic mode: When a gas alarm is triggered, it is cleared automatically as soon as the content level falls below the
alarm threshold.
Up )Maintenance
Normal
Up )Automatic ack.
Manual ack.

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4.4.2. Adjusting the ZERO
-Necessary when a cell is replaced.
-At least twice a year.
-Connect a voltmeter to the two terminal posts provided for that purpose (MF and MES), as
shown below.
-Be sure to be in pure atmosphere (without gas) (If not, inject air)
-Adjust the ZERO (0 mV) with the potentiometer, item 1.
4.4.3. Checking the sensitivity
-Necessary when a cell is replaced.
-At least twice a year.
-Prepare the calibration kit and secure the gas input pipe to the detector.
-Adjust the flow rate of the reference gas 6(1) to 60 l/h before injecting.
-Allow to stabilize for at least 10 seconds.
-Check that the alarm or alarms are triggered (as applicable 6) and carry out the following
procedure.
6The value of the reference gas must be higher than at least the first alarm threshold.
FIGURE 8
Item 1
V
Item 2

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Inject
reference gas
with content
> threshold
AL1
Cell sensitivity is satisfactory
Cell sensitivity is inadequate
Can AL 1 be
triggered by
adjusting the
alarm
potentiometer
(item 2, Fig. 8)?
Cell sensitivity is now satisfactory.
Cell sensitivity is inadequate:
replace the cell and repeat
calibration (O/S).
Alarm 1
triggered?
YES
YES NO
YES NO

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4.5. Replacing the fuse
It is mandatory that spare parts must be guaranteed original OLDHAM parts as,
otherwise, the reliability of the equipment could be adversely affected.
The fuse (Fig. 9, item 1) must be replaced by qualified personnel only.
The fuse is, and must be, in compliance with CEI 127, with time-delay, low breaking capacity
and a voltage of 250 V ~.
-Fuse 5x20-T125 mA 250 V-OLDHAM reference = 6154701
Item 1
FIGURE 9

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V. TECHNICAL SPECIFICATIONS
5.1. Technical characteristics
Manufacturer: OLDHAM
Type: SURVEYOR 4B
Function: Control station for explosive gas detectors
Capacity: 1 channel: 1 or 2 detectors
Measurement:
Measurement:
Display unit:
Continuous
None
Visual alarms: Failure: yellow
Gas, 1st threshold: red
Gas, 2nd threshold: red
Audio alarm: Integrated
Acknowledgement: Manual or automatic
Electric power supplies:
AC:
DC:
230 V ~ (207 to 242 V) (programmed in factory)
12 V ---(11.5 to 14 V)
Power consumption: 5 VA or 4 W (detector connected)
Electrical protection: Fuse
Relays: Relay 1: >
Relay 2 :
Common to gas and fault
Gas
Contact: SPDT, relay 1 (positive safety)
SPDT, relay 2
Max. breaking capacity: 60 VA or 28 W resistive
Maximum voltage: 240 V ~ or 60 V ---
Maximum current: 1A
Measuring line:
Cable:
Maximum line length:
Maximum loop resistance:
3 conductors
40 m (with conductor 1.5 mm²)
1.4 ohms
Mechanical:
Mounting: On symmetrical DIN rail
Miscellaneous:
Technology:
Mains indicator light:
Housing:
Warranty:
SMC (surface mounted component)
Green LED
NORYL
1 year
Dimensions: 58 x 105 x 90 mm
Weight: 0.360 kg
Cable inlets/outlets: Screw type terminal block
Protection of S4B box: IP30
Operating conditions
Ambient temperature:
Relative humidity:
-10°C to +45°C
5% to 95% non-condensed
Noise level: Not significant

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