Oldham SV 4B Manuel utilisateur

Surveyor 4B

Part Number: NPS4BGB

Version: C

The Fixed Gas Detection People

User Manual

GAS DETECTION

We are delighted that you have chosen an OLDHAM instrument and would like to thank you for your

choice.

We have taken all the necessary measures to ensure that your instrument provides total satisfaction in the

future.

Now it is important to read this document carefully.

* OLDHAM declines its responsibility towards any person for material damage, physical injury or death resulting

wholly or partly from inappropriate use, installation or storage of its equipment resulting from failure to observe

instructions and warnings and/or standards and regulations in force.

* OLDHAM neither supports nor authorises any company, physical or moral person to assume responsibility on

behalf of OLDHAM, even if it is involved in the sale of OLDHAM products.

* OLDHAM cannot be held responsible for direct or indirect damage or be required to pay direct or indirect

compensation resulting from the sale or use of any of its products IF THESE PRODUCTS HAVE NOT BEEN

DEFINED AND CHOSEN BY OLDHAM FOR THEIR SPECIFIC USE.

* Drawings, plans, specifications and information included in this document contain confidential information that is

the property of OLDHAM.

* None of this information may be reproduced, copied, divulged or translated, by physical, electronic or any other

means, nor used as the basis for the manufacture or sale of OLDHAM equipment or for any other reasons without

prior consent from OLDHAM.

* This document is not contractually binding. In the interests of its customers, OLDHAM reserves to modify the

technical specifications of its equipment without notice, in order to improve its performance.

* READ THIS MANUAL CAREFULLY BEFORE FIRST USE OF THE EQUIPMENT: this manual must be

read by any person who is or will be responsible for using, maintaining or repairing this equipment.

* This equipment will only provide the announced performance levels if it is used, maintained and repaired

according to OLDHAM directives, by OLDHAM personnel or by personnel approved by OLDHAM.

2 years guarantee in normal conditions of use on parts and technical labour, return in our workshops, excluding

consumables (sensors, filters, etc.).

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)

Contents

I. DESCRIPTION 7

II. MOUNTING OF THE SURVEYOR 4B 7

III. CONNECTIONS 9

3.1. Alternative power supply 9

3.2. DC power supply 9

3.3. Explosimetric detectors 10

3.4. External components 10

3.5. Examples of installation 11

IV. OPERATING INSTRUCTIONS 12

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 15

4.4.2. Acknowledgement of gas alarms 16

4.4.3. Adjusting the ZERO 17

4.4.4. Checking the sensitivity 17

4.5. Replacing the fuse 19

V. TECHNICAL SPECIFICATIONS 21

VI. DISPOSAL 21

VII. EC DECLARATION OF CONFORMITY 22

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 OFTHE 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

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 VAC

or 12 VCC

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).

From 207 to 242 V AC

From 11.5 to 14 V DC

Item 1

Item 2

FIGURE 2

3.3. Explosimetric detectors

Only explosimetric detectors of the "bridge" type can be connected to the SV 4B.

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.

3.4. External components

Surveyor 4B is equipped with the following two relays.

Relay 1 (REL 1), which is in mode, corresponds to the first gas alarm threshold and to the

"FAULT" alarm.

This relay is equipped with SPDT contacts available on the SV 4B 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 SV 4B terminal block

(item 4, Fig. 5).

These both relays could be configured in positive and negative security (programmation by

welding slots on the printed circuit board: made only by OLDHAM or a skilled personal).

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

. A power relay is

required.

The 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

Detector terminal

FIGURE 3

FIGURE 5

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