Dräger GasSecure GS01 User guide

GasSecure GS01 and GS01-EA

Wireless Infrared Hydrocarbon

Gas Detector

Safety Manual

Document ID: 21440 Contact info

Release: 6 GasSecure AS

Version: 164 Hoffsveien 70 C

Doc. Status: APPROVED N-0377 Oslo

Last modified: 12/12/2019 Norway

www.gassecure.com

[email protected]

GasSecure GS01

Safety Manual

Note

Please read the complete manual carefully before including the GS01 gas

detector in a safety instrumented system.

GasSecure GS01

Safety Manual

PRODUCT AND SAFETY DATA

Manufacturer GasSecure AS

Country of origin Norway

Model GS01, GS01-EA

Environmental conditions

Operating temperature -30oC to +55oC

Humidity 0 to 90% RH

non-condensing

Pressure influence, 700-1300 hPa ≤0.15% of reading per hPa

(at 50% LEL)

Protection classification IP 66/67

Electrical

RF output power GS01 ≤12 dBm EIRP

RF output power GS01-EA ≤16 dBm EIRP

Battery type Lithium-Thionyl Chloride

Average power 5 mW

Explosion Protection II 2G Ex ib IIC T4 Gb

For zone 1 and 2 or safe area

Electromagnetic compatibility (EMC) Fulfils immunity requirements

for SIL2 as per EN 61326-3-1

and compliant with EN 50270

The manufacturer verified conditions are 0 to 100% RH and condensing.

GasSecure GS01

Safety Manual

III

TABLE OF CONTENTS

1. INTRODUCTION ........................................................................................................................4

1.1 SCOPE.....................................................................................................................................4

1.2 END-USER REGISTRATION.........................................................................................................4

1.3 INSTRUMENT DESCRIPTION........................................................................................................4

1.4 ACCESSORIES ..........................................................................................................................5

1.5 AREA OF APPLICATION ..............................................................................................................5

1.6 OPERATOR INTERFACE .............................................................................................................5

1.7 DEVICE CONFIGURATIONS.........................................................................................................6

1.8 ADDITIONAL DOCUMENTATION ...................................................................................................7

2. SAFETY FUNCTION..................................................................................................................8

3. COMMISSIONING......................................................................................................................9

3.1 SAFE COMMUNICATION..............................................................................................................9

3.2 OUTPUT DATA FORMAT ...........................................................................................................10

4. INSTALLATION........................................................................................................................11

5. OPERATION AND MAINTENANCE ........................................................................................12

6. PROOF TEST...........................................................................................................................13

7. SPECIFICATIONS....................................................................................................................14

8. CERTIFICATIONS AND FAILURE RATE DATA.....................................................................15

9. REFERENCES .........................................................................................................................17

FIGURES

FIGURE 4-1: CORRECT POSITION OF THE WEATHER CAP........................................................................11

TABLES

TABLE 1-1: GS01 DEVICE CONFIGURATIONS...........................................................................................6

TABLE 3-1: MAIN PROFISAFE PARAMETERS USED BY THE GS01 ............................................................9

TABLE 7-1: TYPICAL PERFORMANCE CHARACTERISTICS FOR THE GS01.................................................14

TABLE 8-1: SIL PARAMETERS GS01 DETECTOR....................................................................................15

TABLE 8-2: DATA OUTPUT FOR THE DIFFERENT FAILURE CATEGORIES ....................................................16

GasSecure GS01

Safety Manual

4 CHAPTER 1

1. INTRODUCTION

1.1 Scope

This manual contains all information and safety instructions required when using

the GasSecure GS01 gas detector (all configurations as outlined in Section 1.7) in

safety-instrumented systems.

The combination of the GS01 detector with a safety controller forms a safety

instrumented system that performs the overall safety function. This manual covers

the detector. It is assumed that the user is familiar with SIL2 compliant safety

controllers, the PROFINET protocol, and the PROFIsafe profile.

The safety manual addresses system planners, constructors, service and

maintenance engineers and any personnel commissioning and operating the

device.

For complete information regarding performance, installation, operation,

maintenance and specifications of the above products, please refer to the

associated user manual [RD 1]. In case of discrepancies, this manual takes

precedence over the user manual.

1.2 End-user registration

Registration of GS01 users with GasSecure is a condition for the safe operation of

the GS01 gas detector throughout the product life.

Please make sure that your end-user contact details are registered with

GasSecure so that you can be contacted in the event of safety relevant product

information.

1.3 Instrument description

The GS01 is a wireless, battery powered point detector that monitors the

concentration of hydrocarbon gases.

It uses a combination of two sensors:

1. An ultrasonic speed-of-sound sensor that continuously monitors changes in

the ambient air composition

2. An optical (infrared) absorption sensor that is used for accurate

measurements of the hydrocarbon gas concentration

The infrared sensor uses more power than the ultrasonic and is therefore kept in

watch mode if the ultrasonic sensor does not detect any changes in the air

composition. The infrared sensor applies optical MEMS (Micro Electro Mechanical

System) technology to enable intermittent operation with fast start-up and

measurement, and thus a low average battery consumption.

GasSecure GS01

Safety Manual

INTRODUCTION

The measured gas concentration is transmitted wireless using the ISA100

Wireless™standard.

The detector is intrinsically safe, with equipment protection level Gb (Ex ib)

intended for use in zone 1 and 2 areas.

Two models are available of this gas detector

- GS01 with fixed antenna

- GS01-EA with extended antenna

All information in this manual for the GS01 also applies for the GS01-EA unless

explicitly otherwise noted.

The GS01 may only be used with the GasSecure battery pack (GasSecure p/n

10055, Dräger p/n AL20712 and AL20713), which contains two Lithium-Thionyl

Chloride size D cells in series.

1.4 Accessories

Use only original GasSecure GS01 accessories and spare parts. A list of these

items with part numbers is provided in the GS01 user manual [RD 1].Area of

application

The gas detector is intended for use in a Fire and Gas safety system that protects

onshore or offshore installations by detecting potentially explosive mixtures of

hydrocarbons and air.

1.6 Operator interface

The interfaces available to the operator are described below.

Service port interface:

For device provisioning (ISA100 Wireless communication)

The service port interface consists of 6 electrical pins located in the battery

compartment behind the battery pack. This interface shall only be accessed

with GasSecure serial adapter (GasSecure p/n 10156, Dräger p/n AL20710)

and GasSecure proprietary software. Note that the GS01 device will not

perform the safety function but output the fail safe values while the service

port is operated.

Communication/Radio interface:

For sending the process value (for data format see Section 3.2)

For verification of data integrity and device configuration with a set of

iParameters in PROFIsafe [RD 3] (see Table 1-1),

Hardware (physical) interfaces:

Gas inlet and outlet on weather cap, for efficient flow of ambient air into the

measuring cell.

GasSecure GS01

Safety Manual

6 CHAPTER 1

6 mm tube fitting on weather cap, for detector validation including the proof

test (see Section 6).

Window and mirror, for cleaning (described in [RD 1],

Battery replacement (described in [RD 1],

1.7 Device configurations

The following table lists all available configurations of the GS01 gas detector,

which meet the specific safety requirements of IEC 61508 and IEC 61511:

Table 1-1: GS01 device configurations

Product number

Firmware

version

Calibration /

data type

SIL

level

IPAR_0

IPAR_CRC

[hex]

GS-01 Config-1

≥3.0

Methane IEC /

Float

SIL 2

0xF4ACFB13

GS-01 Config-2

≥3.0

Propane IEC /

Float

SIL 2

0x1DF50D35

GS-01 Config-129

≥ 3.3

Methane NIOSH

/ Float

SIL 2

129

0x5B5C5A1F

GS-01 Config-130

≥ 3.3

Propane NIOSH

/ Float

SIL 2

130

0xB205AC39

GS-01 Config-65

≥ 3.4

Methane IEC /

INT16

SIL 2

0xA354AB95

GS-01 Config-66

≥ 3.4

Propane IEC /

INT16

SIL 2

0x4A0D5DB3

GS-01 Config-193

≥ 3.4

Methane NIOSH

/ INT16

SIL 2

193

0x0CA40A99

GS-01 Config-194

≥ 3.4

Propane NIOSH

/ INT16

SIL 2

194

0xE5FDFCBF

The above GS01 configurations are selected during commissioning of the device.

The configuration is implemented as iParameter i.e. individual or technology

specific device parameters in PROFIsafe [RD 3]. The controller shall be set up

with the corresponding iParameter for each detector address for verification of the

configuration. Communication is not possible when the IPAR_CRC value is not

assigned.

GasSecure GS01

Safety Manual

INTRODUCTION

1.8 Additional documentation

This document deals with the GS01 gas detector exclusively as part of a safety

function. For operation of the GS01, the following document –covering all non-

safety relevant features - is also needed:

GasSecure GS01 Wireless Infrared Hydrocarbon Gas Detector User

manual Document ID 112464.

GasSecure GS01

Safety Manual

8 CHAPTER 1

2. SAFETY FUNCTION

The GS01 gas detector is suitable for use in a safety function of safety integrity

level (SIL) 2. The GS01 gas detector can be used in low demand mode or in high

demand mode with a maximum demand of < 1 / 200 hours.

The safety-related characteristics listed in Section 8 may be used in the relevant

calculations required for IEC 61508 / 61511 safety-instrumented system

compliance.

The safety function of the GS01 is the detection of potentially explosive gas

concentrations. The gas concentration in %LEL is converted into a digital

measured value and provided as a radio signal using the ISA100 Wireless™

standard and the PROFIsafe profile to a control system. ISA100 Wireless ensures

AES128 bit encryption (AES = Advanced Encryption Standard) of all transmitted

data. This encryption may by no means be de-activated by the operator.

The GS01 gas detector will perform all critical diagnostic functions within the

intervals as specified in Table 8-1.

GasSecure GS01

Safety Manual

COMMISSIONING

3. COMMISSIONING

Note: On completion of commissioning, the proof test, as described in Section 6,

shall be executed to validate the proper functioning of the safety function.

3.1 Safe communication

The GS01 uses the PROFIsafe profile [RD 3] over PROFINET as tool for safe

communication. In this setup the GS01 acts as F-Slave, a passive communication

peer able to perform PROFIsafe. Its counterpart is the F-Host, a data processing

unit able to perform PROFIsafe and trigger the F-Slave for data exchange. The F-

Host must be compliant with the PROFIsafe requirements so that end-to-end

communication through a black channel, defined by the IEC 61508 standard, can

be established.

3.1.1 Setup

The F-Host owner (normally the engineering company or the end-user) must

address the list of items listed below. Note also Table 3-1, where the main

PROFIsafe parameters used by the GS01 are listed.

The selected gateway must support PROFINET.

The selected safety controller is minimum SIL2 compliant.

The PROFINET (Ethernet) network containing the PROFIsafe

communication must either be on a closed network or be protected from

open access with a security gate.

The assigned F-address for each device shall be unique within a

PROFIsafe naming island (network boundary).

The watchdog timeout must be set within the limits given in Table 3-1.

Verify that the iParameter for the device configuration (cf. Table 1-1) is set

correctly.

Table 3-1: Main PROFIsafe parameters used by the GS01

PROFIsafe

parameter

name

Format

Description

GS01 usage

F_S/D_Address

F_slave =

Usign_16

Unambiguously

assigned F-

device

1 - 65534

F_host =

Usign_16

Address of F-

host

1 - 65534

F_WD_Time

Time,

milliseconds.

Unsigned_16

Watchdog

timeout

15 - 24 seconds2

The GS01 will accept F_WD_Time settings up to 60 seconds. F_WD_Time setting above 24

seconds will invalidate the worst case response time including communication stated in table 8-1.

Worst case response time including communication equals 2 times F_WD_Time plus worst case

detector response time, which is 12 seconds.

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