Fire Sentry SS4-A Mode d'emploi

Model SS4-A/-A2 Optical Fire Detector Page i

Installation and Operations Guide

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Multi-Spectrum Digital

Electro-Optical Fire Detector

MODEL

SS4-A/-A2

(CENELEC)

STAND-ALONE RELAY MODE

or 4-20 mA Output Option

Installation Guide

and

Operating Manual

Fire Sentry Corporation (FSC)

23311 La Palma Avenue Tel.: 714-694-2700

Yorba Linda, California 92887 Fax: 714-694-2701

Model SS4-A/-A2 Optical Fire Detector Page ii

Installation and Operations Guide

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Fire Sentry Corporation (FSC)

23311 La Palma Avenue

Yorba Linda, California 92887

Tel: (714) 694-2700

Fax: (714) 694-2701

www.firesentry.com

Read and understand this manual before

installing or operating equipment.

No part of this document may be copied or reproduced without the express

written permission of Fire Sentry Corporation (FSC).

This manual is subject to change without notice.

ACCTTL, ALERT-1, ALARM-2, ALERT-1: ALARM 2, ALERT-1: ALARM-2, ATAG, Clean Room Sentry, COP-i,

Complete Optical Path Integrity, CM1, CM1-A, DartLogic, FireLogic, Fire Signature Analysis, FireBusI, FireBusII,

FirePic, FirePicII, FirePicIII, FirePix, FirePicture, FSC, Fire Sentry Corporation, Fire Sentry Corp., FSX, All FSX

Nomenclature Variations (such as: FS2, FS2X, FS3, FS3X, FS4, FS4X, FS5, FS5X, FS6, FS6X, FS7, FS7X, FS8,

FS8X, FS9, FS9X, FS10X, FS10X, FS11, FS11X, FS12, FS12X, FS14, FS14X, FS15, FS15X, FS16, FS16X, FS17,

FS17X FS18, FS18X, FS19, FS19X, FS20, FS20X, FS24, FS24X, FS24XN, FS26, FS26X, FS26XN), FS7-2173-2RP,

FS System 7, FS System 10, FS7-2173, FS7-2173-RP, FS2000, FS System 2000, High Speed Flame & Surveillance

Detector, Multi-Spectrum QuadBand Triple IR, Multi-Spectrum TriBand, Multi-Spectrum Tri-Band, Near Band Infrared,

Near Band IR, NearBand IR, QuadBand IR, Room Sentry, RS, RS2, SM2, SM3, SS, SS2, SS2X, SS2-A, SS3, SS3-A,

SS3X, SS4, SS4-A, SS4X, SnapShot, SLR-BIT, SuperBus, SuperSentry, System 2000, Tri-Mode Plot, QuadBand

Triple IR Plus, TriBand, Tri-Band, “FS & FSC triangle logo’s”, WBIR, Wide Band Infrared, WideBand IR, Wide Band IR

are Trademarks of Fire Sentry Corporation (FSC), Yorba Linda, California.

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TABLE OF CONTENTS

PAGE

APPROVALS.....................................................................................................................................................................1

SECTION 1 TECHNICAL DESCRIPTION ........................................................................................................................1

1.1Features and Specifications ................................................................................................................................1

1.1.1 General Description...................................................................................................................................1

1.1.2 Applications .............................................................................................................................................................2

1.1.3 Detector Locations..................................................................................................................................................2

1.2 Stand-Alone Operation.........................................................................................................................................2

1.3 FS2000 System Operation....................................................................................................................................2

1.4 Overview ................................................................................................................................................................3

1.4.1 Model SS4-A/-A2 Detector....................................................................................................................................3

1.4.2 Detection Range and Field-of View .....................................................................................................................3

1.5 Configuration Settings .........................................................................................................................................4

1.6 Testing....................................................................................................................................................................5

1.6.1 Special Conditions for Testing..............................................................................................................................5

1.6.2 Automatic Testing...................................................................................................................................................5

1.6.3 Manual Testing........................................................................................................................................................5

SECTION 2 INSTALLATION.............................................................................................................................................6

2.1 Installation Instructions........................................................................................................................................6

2.1.1 Installation Precautions..........................................................................................................................................6

2.1.2 Conduit Installation.................................................................................................................................................6

2.1.3 Wiring Recommendations .....................................................................................................................................6

2.1.4 Power Supply Considerations...............................................................................................................................6

2.2 Installation Procedure ..........................................................................................................................................6

2.2.1 Configuring and Wiring Detectors ........................................................................................................................6

2.2.2 Removing Detector From Its Enclosure. .............................................................................................................6

2.2.3 Configuring the Detector Module. ........................................................................................................................7

2.2.4 Wiring the Detector Module...................................................................................................................................7

2.2.5 Wiring the SS4-A/-A2 Detector for 4 to 20 mA Current Mode Operation (Optional) ....................................7

2.2.6 Wiring the Detector Relays....................................................................................................................................8

2.2.7 Replacing the Detector Module in the Enclosure...............................................................................................9

2.3 Enclosure Installation (optional) .........................................................................................................................9

SECTION 3 TROUBLESHOOTING AND MAINTENANCE............................................................................................12

3.1 Model SS4-A/-A2 Detector Faults......................................................................................................................12

3.2 Cleaning Windowed Enclosures and Detectors ..............................................................................................12

3.3 Personnel Training..............................................................................................................................................13

3.4 Detector Repair ...................................................................................................................................................13

DETECTOR PINOUT DATA............................................................................................................................................14

Verification Time.................................................................................................................................................................15

Latching................................................................................................................................................................................15

IR-Only Enable....................................................................................................................................................................15

Test Cycle............................................................................................................................................................................15

Fire Range...........................................................................................................................................................................15

SECTION 4 OPTIONAL ACCESSORIES.......................................................................................................................16

4.1 Air Shield for Applications in Contaminated Environment (Part No. DASA1-P)..........................................16

4.2 PC Software Kit (2029-INTERFACE-KIT)...........................................................................................................16

4.3 4-20 mA Option (MA420-4) .................................................................................................................................16

4.4 Detector Mounts (SM2 or SM4)..........................................................................................................................16

4.5 Test Lamp (FT-2045 or FT-2145)........................................................................................................................16

INDEX ..............................................................................................................................................................................17

Model SS4-A/-A2 Optical Fire Detector Page 1

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APPROVALS

The Model SS4-A and SS4-A2 (SS4-A/-A2) Optical Fire Detectors have been manufactured in compliance

with the requirements of the ISO-9002 standard and have received:

CENELEC approval by SIRA Certification Service in compliance with the ATEX Directive.

CE approval in compliance with the EMC Regulations.

SECTION 1: TECHNICAL DESCRIPTION

1.1 Features and Specifications

1.1.1 General Description

The Model SS4-A/-A2 Optical Fire/Flame Detectors are fast-reacting (within 5 seconds), digital, configurable,

computerized, “smart” units. This Detector has sensitivity to Type A, B, and C flaming fires. Detectors of this

design process Ultraviolet (UV), Wide band Infrared (IR), and Visible (VIS) spectral ranges from ruggedized

Solar-blind UV, “Quantum-Effect” IR, and visible sensors correspondingly. They are equipped with SRL-BIT

(Built-In-Test) for optical “through the lens” of both the sensors and lens. The Model SS4-A/-A2 UV, IR, and

VIS Fire Detectors have false alarm immunity, and adjustable alarm range between 15 and 60 feet for a one

square foot gasoline pan fire with a 120-degree (60 degrees from the axis) conical field of view. Their

microprocessor-based algorithms (FirePic, SnapShot, and Tri-Mode Plot) assure time programmable

alarm verification, Fire Signature Analysis, and compatibility with standard approved fire alarm panels.

The Detector also has the flexibility to be re-configured in the field. Its installation is simple, and operation

straightforward due to the built-in self-testing feature. Therefore, the maintenance consists mainly in keeping

the Detector window lens clean and performing periodic testing required by the manufacturer of the Fire

Control and Suppression System.

Other Specifications:

Housing: Explosion-Proof, Copper-free Aluminum (< 0.4%) with powder coated finish, or optional 316

Stainless Steel, NEMA type 3 and type 4 weatherproof, tamper-resistant with integral dual

¾ inch NPT conduit openings.

Marking: Class I, Div. 1 & 2, Groups B,C, & D

Class II, Div. 1 & 2, Groups E, F, & G

Class III

Temperature: Operation: -40 to +80C (-40 to +176º F)

Storage: -55 to 105C

Humidity range: 10% to 90% (RH), non-condensing

Weight: Aluminum housing is approximately 3.8 lbs. Stainless Steel is approximately 8.9 lbs.

Dimensions: 4.81 inches diameter by 4.40 inches high

LED Visual Indicators:

Powered Detector: Dual LEDs blink every 10 seconds

Fault Declared: One LED turns ON solid until the fault is cured

Re-calibrate when: Both LEDs flash ON and OFF rapidly

Fire Declared: Both LEDs ON solid (one LED blinks during first few seconds) and unlatches

after the fire threat is eliminated.

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Electrical Power Requirements:

Connectors: WECO type screw connectors, Wire: 18 to 24 AWG

Input Voltage range: 24 Volts DC nominal, 20.5 to 32 Volts DC

Normal Operation Current: 68 mA nominal (72 with optional MA420-4 Module)

Fire Alarm Current: 75 mA nominal (95 with optional MA420-4 Module)

Analog Current Output: 4 or 20 mA with optional MA420-4 Module.

Relay Contact:

Rating: 0.5 Amp at 120 Volt AC or 1 A at 24 V DC resistive

Fire relay: N.O. and N.C. contacts (Latching/Non-Latching, switch selected)

Verification relay: N.O. and N.C. contacts (Adjustable time from 0 to 30 seconds)

Fault relay: N.O. and N.C. contacts

1.1.2 Applications

Applications of the Model SS4-A/-A2 Detectors include warehouses, aircraft hangars, petrochemical facilities,

Silane gas storage, Gas turbines, and Power plants, among others.

1.1.3 Detector Locations

For unobstructed performance, considering Detector locations in application areas, avoid sources, other than

fire, which may cause false alarms, such as operations utilizing welding or gas torch equipment, high power

sources of EMI or RFI, or artificial lighting pointed directly at the Detector. Locations experiencing strong

mechanical or acoustical vibrations should also be avoided. For optimum performance, locate the Detector(s)

as close as possible to the potential fire source, preferably, along the axis of the vision cone. Install enough

Detectors to completely eclipse the fire hazardous area. Assure accessibility for the Detector lens cleaning, as

well as best possible protection and/or cleaning from fog, rain, ice, dust, hazardous atmospheres, and other

adverse elements. If necessary, utilize the Steel Swivel Mount (Model SM2) or 316 Stainless Steel Swivel

Mount (Model SM4) for greater flexibility in mounting locations (See Figures 4 and 5).

1.2 Stand-Alone Operation

For Stand-Alone operation, the Model SS4-A/-A2 Detector may be connected to a FM Approved or UL listed

Fire/Security Panel. The Detector operated in the Stand-Alone mode uses the Fire, Fault, and Verify (optional)

relays to interface to the Fire/Security Panels. For Stand-Alone operation, the Detector’s Fault relay is

automatically configured by the on-board microprocessor. The input current of the Model SS4-A/-A2

Detector is about 15 mA higher in the Stand-Alone mode compared to FS2000 System operation.

NOTE: The Fault relay is not available when the Detector is wired to the FS2000 System.

1.3 FS2000 System Operation

For FS2000 System operation, the Detector Fire and Fault signals are sent digitally to the FS2000 System

Controller using the four wire FS2000 FireBus. The FireBus provides the 24 volts DC power for the Detector

and RS-485 digital communication (Refer to Fire Sentry document MN0003 entitled "FS2000 FIRE EARLY

WARNING SYSTEM - INSTALLATION and OPERATIONS GUIDE"). For special remote alarm applications,

users may also connect directly to the Detector’s Fire alarm relay.

NOTE: When the Model SS4-A/-A2 Detector is connected to the FS2000 System using FireBus

communication, the Controller automatically disables the Detector’s Fault relay.

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1.4 Overview

1.4.1 Model SS4-A/-A2 Detector

Version SS4-A: There are two (2) LEDs on the Model SS4-A Detector that indicate the state of the Detector.

During normal operation both LEDs will blink every 10 seconds.

If the Detector alarms to a fire, it energizes the Fire relay and turns on both LEDs in the following sequence.

One LED is turned on immediately and the second LED will rapidly blink for several seconds indicating that the

Detector's FirePic spectra is being permanently stored in the Detector's solid-state memory (FirePic is the

several seconds of Detector spectral data which precedes an alarm event). Once the FirePic data is stored,

the second LED will remain on. For this version, the fire alarm LEDs turn on and remain on until power to the

unit is cycled (turned off and on again).

If a the Detector has a Fault, it de-energizes the Fault relay and turns one (1) LED on (the LED will not light if

the Fault is a “No Power Fault”). If the Fault condition, such as a “Low Voltage Fault”, is eliminated the

Detector will automatically return to Normal Operation.

NOTE: Faults caused by excessive input voltage or due to temperatures outside the operating temperature

range require factory re-certification. Re-certification is required if a Fault is indicated by both LEDs rapidly

blinking (with frequency about 2 Hz.).

Version SS4-A2: The operation of this unit is identical to the SS4-A, except the fire alarm LEDs turn off once

the fire threat is eliminated, without power cycling of the device.

1.4.2 Detection Range and Field-of View

The SS4-A/-A2 detection range is field adjustable between 15 and 60 feet in 15 feet increments to an industrial

standard of one square foot Gasoline, Kerosene, or isopropyl Alcohol pan fire within 5 seconds.

The Detector is also optimized for the following specific type of fuels and will alarm to the resultant fire within

five (5) seconds. Careful attention should be given to the Detector sensitivity setting for these types of fires.

Silane Gas: 10” (10-inch) fire height using a 3/16” orifice at a 15-foot distance, with the Detector

sensitivity setting of 15 feet.

Propane Gas: 10” (10-inch) fire height using a 3/8” orifice at a 15-foot distance, with the Detector

sensitivity setting of 15 feet.

Jet fuel-A: ONE square foot pan fire at a 60-foot distance, with the Detector sensitivity setting of 60

feet.

JP-5: ONE square foot pan fire at a 60-foot distance, with the Detector sensitivity setting of 60 feet.

JP-4: TWO square foot pan fire at a 100-foot distance, with the Detector sensitivity setting of 60 feet.

JP-8: TWO square foot pan fire at a 100-foot distance, with the Detector sensitivity setting of 60 feet.

The Detector incorporates a 120-degree conical Field of View. The fire emissions received by the Detector

diminish at extreme range and edges of the field-of-view. It is recommended that the Detector be pointed at

the fire threat area for the fastest response times to the smallest size fire. When multiple Detectors are used to

cover large areas, the Field-of-Views should overlap to insure complete coverage of the fire threat area. The

Field-of-View is not, however, limited to 120 degrees. Larger fires outside the 120 degree Field-of-View may

cause the SS4-A/-A2 to alarm. This is based on the Inversed Square Law for radiated energy, a larger size

fire outside the Detection Range and field-of-view may cause the Detector to alarm. Refer to Figure 1.

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120 Degrees

Figure 1: Field of View, Horizontal, and Vertical.

Sensitivity to 1 Sq. Ft. Gasoline Pan Fire

1.5 Configuration Settings

The SS4-A/-A2 Detector may be reconfigured in the field and thus optimized for special applications. The

configuration of the Detector is set using DIP switches located on the middle circuit board of the Detector

Module. The DIP switch settings for each configuration are listed in Table 2.

These configurable options include:

1. Fire Verify Relay - The Verify Relay may be disabled or enabled with several Verify Time settings. It also

may be set to act as another Fire Relay. The Verify Time may be set from 5 to 30 seconds in 5 seconds

increments. The Factory setting: Verify Relay Disabled.

When the Verify Relay is enabled and Verify Time is set the Verify Relay will energize and the Fire Relay will

de-energize if the fire conditions are still present at the end of the Verify Time period. In the opposite case,

the Detector will wait for 5 seconds plus another Verify Time period to test for the fire conditions. This wait

and verify cycle will repeat 10 times, or until the presence of the fire is confirmed. This concludes the

verification process. If the presence of the fire is not established the Fire Relay will remain energized unless

Non-Latching mode is set. In case a subsequent fire is detected the entire verification process will be

repeated. The state of the Fire and Verify Relay after the verification process will depend on the choice

between Latching and Non-Latching modes.

NOTE: When the Verify Relay is enabled and Verify Time is set, the Fire Relay will de-energize when

the Verify Relay is energized.

2. Latching / Non-Latching - The Fire Relay and Verify Relay may be set in a Latching or Non-Latching mode.

If Latching mode is selected on the SS4-A, the Fire or Verify Relay and red LEDs will remain energized until

the Detector power is cycled (power is turned off then on). If Latching mode is selected on the SS4-A2, the

Fire or Verify Relay will remain energized until the Detector power is cycled (power is turned off then on), but

the red LEDs will reset once the fire threat is eliminated. The Factory setting is Latching.

If Non-Latching mode is selected the Fire Relay and red LEDs will reset after 10 seconds. Non-Latching

mode may not meet some Fire Codes. Consult with authority having jurisdiction over the area of application

before using this setting.

3. Test Period - This setting pertains to the Through-the-Lens test period, which may be set to 6 or to 30

minutes. The Factory setting is 30 minutes. The 6-minute period may be required in applications where the

lens is frequently obscured.

NOTE: Utilization of the 6-minute period may adversely affect the source tube service life.

4. IR-Only Enable / Disable

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The IR-only setting allows the Detector to declare a Fire on events where UV is not present or is obscured. In

applications where UV absorbing fumes are commonly present in high concentrations (these fumes are

usually toxic and should require masks or breathing equipment), the Detector will function. The Factory

setting for IR-Only is Disabled.

WARNING: IR-only setting should be used only in special indoor applications.

5. Fire Detection Range Setting - 15, 30, 45, or 60 feet. The Factory setting is 45 feet. This setting should be

changed only if the Detector is located too close to the fire threat area and in the presence of abnormally high

UV.

1.6 Testing

1.6.1 Special Conditions for Testing

The SS4 Detector should be tested immediately after installation, after repair or maintenance involving

wiring or module replacement, after periodic maintenance, or after lens contamination has been

identified.

1.6.2 Automatic Testing

Automatic SLR-BIT (Built In Test) “through-the-lens” self-testing is performed for virtually all-internal

electronic systems of the Detector every 10 minutes during its operation. The Detector’s red LEDs

blinking 3 times in rapid succession indicates window lens contamination, or lack of the protective grill or

enclosure cover.

1.6.3 Manual Testing

For manual testing, the SS4-AUV Detector may be exposed to an actual industry standard open flame or

to a Test Lamp simulating a fire. It is mandatory to use the Fire Sentry handheld UV/IR Test Lamp Model

No FT-2045 or FT-2145 with SS4 Fire Detectors. The FT-2045 and FT-2145 Test Lamps are housed in

an Explosion-Proof enclosure, powered by internal rechargeable batteries, and designed for indoor and

outdoor use. For additional information on the Test Lamps, refer to FSC Specification SP0242 for FT-

2045 or 1505-008A for FT-2145.

NOTE: Other manufacturers UV/IR Test Lamps should not be utilized to test FSC Detectors,

conversely, the FT-2045 and FT-2145 Test Lamps should not be utilized for testing other manufacturer’s

Detectors.

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SECTION 2: INSTALLATION

2.1 Installation Instructions

This section describes the installation of the Model SS4-A/-A2 Detector for the Stand-Alone relay mode. It is

recommended that junction boxes be used to wire the Detectors. Determine the configuration settings for the

device(s) and the number of connections to be used (Fire, Fire Verify, Fault, and Power) depending on the

desired Detection Range and the Fire Control Panel type used (refer to the Fire Control Panel Manual for

details).

2.1.1 Installation Precautions

The following precautions should be observed during installation of Model SS4-A/-A2 Detectors.

1. Make sure that the external electrical power is turned OFF before connecting the Detector.

2. Printed circuit board components of the Detector are susceptible to damage from electrostatic

discharge. Do not handle the Detector's module (and its printed circuit boards) without adequate

grounding and observing all necessary measures to prevent the effect of electrostatic discharge

(ESD).

2.1.2 Conduit Installation

When planning the conduit, follow these recommendations.

1. If only one of the two 3/4 inch NPT conduit openings on the Model SS4-A/-A2 Detector enclosure is

used, seal the unused opening with a threaded plug and approved sealing material.

2. In areas where moisture may accumulate, install an approved conduit trap or drain.

3. A seal should be installed at the enclosure wall for all applications requiring a Class I, Div. 1

Explosion-Proof rating.

2.1.3 Wiring Recommendations

To prevent intermittent connections, Fire Sentry Corporation recommends using junction boxes. Install a

junction box near each Detector location. Wire each Detector to its junction box. Use screw-down terminal

strips inside the junction box to make the connections from the Detector's terminals to an FM Approved or UL

listed Fire Alarm Panel. Also use FM/UL Approved junction boxes and terminal strips.

NOTE: Avoid wire splices. However, if wire splices are necessary, all splices should be soldered.

Utilization of good wiring practices will simplify installation, improve reliability, and facilitate maintenance.

2.1.4 Power Supply Considerations

The Model SS4-A/-A2 Detector uses 24 Volts DC at a maximum current of 75 mA (with the 4-20 mA option the

maximum supply current is 95 mA). Make sure the Panel's power supply can withstand the load current of the

total number of Detectors connected to it. For example, if 10 (ten) Model SS4-A/-A2 Detectors are connected

to a single Panel's power supply (multiplying 75 mA by 10), the power supply must be able to withstand at

least 750 mA + 10% (0.75 A + 10%). This load current must also be taken in consideration for calculating the

Panel's 24-hour power backup requirements.

2.2 Installation Procedure

2.2.1 Configuring and Wiring Detectors

To configure and wire a Model SS4-A/-A2 Detector, or to replace the Detector module, the module must be

removed from the enclosure. After the configuration settings and wiring connections have been completed,

the module should soon be re-installed in the enclosure to avoid contamination from the environment.

NOTE: Avoid touching the Detector sensors at the front of the Detector module. If touched accidentally,

they should be cleaned per instructions of Section 3.2.

2.2.2 Removing Detector From Its Enclosure.

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a. With electrical power off (verify that electrical power is off by making sure that the Detector's LEDs

do not blink for at least 15 seconds), loosen the Allen-head screw at the base of the metal

enclosure top lens cover.

b. Remove the cover and set it aside along with the "O" ring avoiding contamination.

c. Loosen the three Philips head captive screws located on the top circuit board.

d. Carefully lift out the module, sliding it along the three metal standoffs.

2.2.3 Configuring the Detector Module.

Set the DIP switches located on the center PC board of the Detector module to desired settings.

Refer to Section 1.5 and Table 2 for DIP switch settings.

2.2.4 Wiring the Detector Module.

a. Insert the cables into the metal enclosure base through one of the conduit openings. Refer to

Figure 6.

b. Connect the 24 Volt DC power supply wires to pins 1 (-) and 4 (+) of the J1 or J2 connector,

observing the correct polarity. Refer to Figure 2. Firmly tighten down the two slotted screws with a

small screwdriver taking care not to over-tighten the screws.

Pins 2 and 3 of the J1 and J2 connectors are the RS-485 interface used only for downloading the

FirePic from the Detector’s non-volatile memory, or for viewing the Tri-Mode Plot. It is recommended

to wire pins 2 and 3 to a separate junction box and properly identify them for future use. A color-

coded, multi-connector, shielded, UL-rated cable with 18 to 24-gauge wire is recommended for

connecting to J1 or J2. The following color-coding is suggested as a guideline:

Pin 1 Pin 2 Pin 3 Pin 4

Black Green or Blue White or Yellow Red

GROUND (-) RS-485(-) RS-485(+) POWER (+)

*Fault Relay

Verify

Relay

* Fault relay is shown in the energized condition during normal operation (No Fault).

Figure 2: Model SS4-A/-A2 Detector Wiring

(Bottom View of SS4-A/-A2 Detector Module)

2.2.5 Wiring the SS4-A/-A2 Detector for 4 to 20 mA Current Mode Operation (Optional)

Ce manuel convient aux modèles suivants

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