GASSONIC Observer-i Manuale utente

HARTUSERGUIDEFOR

GassonicObserver-

Ultrasonic Gas Leak Detector

The information and technical data disclosed in

this document may be used and disseminated

only for the purposes and to the extent

specifically authorized in writing by Gassonic, an

MSA company.

Instruction Manual 03-14

MSA reserves the right to change published

specifications and designs without prior notice.

Part No. MANObserver-iH

Revision B/03-14

Gassonic Observer-iHART

This page intentionally left blank.

Gassonic Observer-iHART

iii

Table of Contents

GASSONIC OBSERVER-I...........................................................................................................0

TABLE OF TABLES.....................................................................................................................V

TABLE OF FIGURES...................................................................................................................V

1.0INTRODUCTION ....................................................................................................................6

1.1SCOPE.......................................................................................................................................6

1.2PURPOSE..................................................................................................................................6

1.3REFERENCES...........................................................................................................................6

2.0DEVICE IDENTIFICATION.....................................................................................................6

3.0PRODUCT OVERVIEW..........................................................................................................7

3.1GETTING STARTED .................................................................................................................7

4.0PRODUCT INTERFACES ......................................................................................................8

4.1PROCESS INTERFACE............................................................................................................8

4.2HOST INTERFACE....................................................................................................................8

4.3LOCAL INTERFACES, JUMPERS, AND SWITCHES ..............................................................8

5.0DEVICE VARIABLES.............................................................................................................8

6.0DYNAMIC VARIABLES .........................................................................................................8

6.1PRIMARY VARIABLE = DECIBEL (dB).....................................................................................8

6.2SECONDARY, TERTIARY, AND QUATERNARY VARIABLES: NOT APPLICABLE..............9

7.0ERROR/STATUS INFORMATION .........................................................................................9

8.0UNIVERSAL COMMANDS...................................................................................................10

9.0COMMON PRACTICE COMMANDS ...................................................................................10

9.1SUPPORTED COMMANDS....................................................................................................10

9.2BURST MODE.........................................................................................................................10

9.3CATCH DEVICE VARIABLE....................................................................................................10

10.0DEVICE SPECIFIC COMMANDS.............................................................................11

10.1COMMAND #132: DO ALARM TEST......................................................................................11

10.2COMMAND #136: SET ALARM LEVEL ..................................................................................11

10.3COMMAND #139: RESET ALARM..........................................................................................12

10.4COMMAND #141: SET ALARM RELAY CONFIGURATION ..................................................13

Gassonic Observer-iHART

10.5COMMAND #142 RESET EVENT HAPPENED FLAG............................................................13

10.6COMMAND #143: READ EVENT LOGGING COUNTERS.....................................................14

10.7COMMAND #144: CLEAR EVENT LOGGING COUNTERS...................................................14

10.8COMMAND #146: READ ALARM EVENT LOG......................................................................15

10.9COMMAND #147: READ FAULT EVENT LOG.......................................................................16

10.10COMMAND #148: READ MAINTENANCE EVENT LOG........................................................16

10.11COMMAND #149: SET CLOCK...............................................................................................17

10.12COMMAND #150: READ CLOCK............................................................................................18

10.13COMMAND #151: SET RUN TIME METER............................................................................18

10.14COMMAND #152: READ RUN TIME METER.........................................................................19

10.15COMMAND #154: SET EVENT INDEX...................................................................................19

10.16COMMAND #155: GET EVENT INDEX...................................................................................20

10.17COMMAND #156: READ CALIBRATION EVENT LOG..........................................................20

10.18COMMAND #163: GET FAST CHANGING INFORMATION...................................................21

10.19COMMAND #164: GET SLOW CHANGING INFORMATION.................................................22

10.20COMMAND #165: GET SET UP INFORMATION...................................................................22

10.21COMMAND #166: GET DEVICE FIRMWARE REVISION......................................................24

10.22COMMAND #169: LOAD FACTORY DEFAULT SETTING.....................................................24

10.23COMMAND #170: SET CURRENT RANGE............................................................................25

10.24COMMAND #171: SET DETECTION MODE..........................................................................25

10.25COMMAND #172: SET ENHANCE MODE AO.......................................................................26

10.26COMMAND #192: DO CALIBRATION.....................................................................................27

10.27COMMAND #195: DO ACOUSTIC TEST................................................................................27

10.28COMMAND #201: SET ALARM DELAY TIME........................................................................28

11.0TABLES....................................................................................................................29

11.1GASSONIC OBSERVER-i DEVICE SPECIFIC COMMANDS SUMMARY.............................29

11.2GASSONIC OBSERVER-i – OPERATING MODES ...............................................................30

11.3GASSONIC OBSERVER-i – CALIBRATION SUBMODE........................................................30

11.4CALIBRATION EVENT LOG – CAUSE DESCRIPTION.........................................................30

11.5MAINTENANCE EVENT LOG – CAUSE DESCRIPTION.......................................................31

11.6ALARM EVENT LOG – DETECTION DESCRIPTION ............................................................31

11.7FAULT EVENT LOG – CAUSE DESCRIPTION......................................................................31

12.0PERFORMANCE......................................................................................................32

12.1SAMPLING RATES..................................................................................................................32

12.2POWER-UP .............................................................................................................................32

12.3DEVICE RESET.......................................................................................................................32

12.4SELF-TEST..............................................................................................................................32

12.5COMMAND RESPONSE DELAY............................................................................................32

12.6BUSY AND DELAYED-RESPONSE........................................................................................32

12.7LONG MESSAGES..................................................................................................................32

12.8NON-VOLATILE MEMORY (NVM)..........................................................................................32

12.9OPERATING MODES..............................................................................................................33

12.10WRITE PROTECTION.............................................................................................................33

13.0APPENDIX................................................................................................................34

Gassonic Observer-iHART

13.1CAPABILITY CHECKLIST.......................................................................................................34

13.2DEFAULT CONFIGURATION .................................................................................................35

13.3DEVICE DESCRIPTION LANGUAGE MENU .........................................................................36

Table of Tables

Table 1: Reference Documents.............................................................................................................................6

Table 2: Field Device Identification Data...............................................................................................................6

Table 3: Error/Status Information ..........................................................................................................................9

Table 4: Gassonic Observer-i Common Practice Commands.............................................................................10

Table 5: Gassonic Observer-i Device Specific Commands.................................................................................29

Table 6: Gassonic Observer-i Operating Modes.................................................................................................30

Table 7: Gassonic Observer-i Calibration Submode...........................................................................................30

Table 8: Gassonic Observer-i Calibration Event Log – Cause Description.........................................................30

Table 9: Gassonic Observer-i Maintenance Event Log – Cause Description.....................................................31

Table 10: Fault Event Log – Cause Description..................................................................................................31

Table 11: Command Response Times................................................................................................................32

Table 12: Capability Checklist.............................................................................................................................34

Table 13: Default Configuration...........................................................................................................................35

Table of Figures

Figure 1: Connecting a PC to a HART Device......................................................................................................7

Figure 2: Gassonic Observer-i Device Description Menu ...................................................................................36

Gassonic Observer-iHART

1.0 INTRODUCTION

1.1 SCOPE

The HART configuration of the Gassonic Observer-iultrasonic gas leak detector complies with HART

Protocol Revision 6.0. This document specifies all of the device specific features and documents HART

Protocol implementation details. The functionality of this Field Device is described sufficiently to allow

its proper application in a process and its complete support in HART capable Host Applications.

1.2 PURPOSE

This specification is designed to complement the Gassonic Observer-i Instruction Manual by providing a

complete description of this field device from a HART Communications perspective. This specification is

designed to be a technical reference for HART capable host application developers, system integrators,

and knowledgeable end users.

1.3 REFERENCES

Document Name Document Relationship

HART Communications

Protocol Specifications This is used to insure compliance with the HART

Communication Protocol.

Gassonic Observer-i

Instruction Manual This is the Gassonic Observer-iProduct Instruction

Manual.

Table 1: Reference Documents

2.0 DEVICE IDENTIFICATION

The following Table 2 is the Field Device Identification Data for the instrument.

Manufacturer’s

Name MSA Model Number Observer-i

HART ID Code 223 (DF Hex) Device Type

Code: 150 (96 Hex)

HART Protocol

Revision 6.0 Device

Revision: 1

Number of

Device Variables 0

Physical Layers

Supported 1

Physical Device

Category FSK

Table 2: Field Device Identification Data

Gassonic Observer-iHART

3.0 PRODUCT OVERVIEW

The Gassonic Observer-i is an ultrasonic gas leak detector for detecting pressurized gas leaks. The

Gassonic Observer-i detects the gas leak by measuring the sound level and reports the measurement

in decibel (dB).

3.1 GETTING STARTED

In order to enable HART communication with the Gassonic Observer-i detector, users may

employ several means including HART handheld communicators or PC-based systems. Using a PC-

based software application and a HART interface modem, for example, allow operators to access

information from the Gassonic Observer-i. A typical setup is illustrated in Figure 1.

Figure 1: Connecting a PC to a HART Device

Once the detector is installed (see Gassonic Observer-i Instruction Manual) and connected to a PC,

host application, or handheld terminal, the master will begin communication to the Gassonic Observer-i

by using the HART Command #0. The field device will then respond only if its tag matches. The data in

the reply to Command #11 is identical to that of Command #0, so the master can then construct the

Unique Identifier for use with further commands.

NOTE: The handheld device allows for the retrieval of diagnostic information and input of device

settings as needed and should not be used as a permanent part of a safety system.

Gassonic Observer-iHART

4.0 PRODUCT INTERFACES

4.1 PROCESS INTERFACE

This section describes all interfaces between the devices and the measured process.

4.1.1 Sensor Input Channels

A digital display provides indications and display codes that can be viewed through a window on the

Gassonic Observer-i. An analog signal (4-20 mA) and relays provide remote and/or discrete indications

of the detector’s operation.

4.2 HOST INTERFACE

The HART interface uses the 4-20 mA (analog output) current loop. Refer to the Gassonic Observer-i

Installation Manual for connection details.

4.2.1 Analog Output

The primary variable is proportional to the decibel (dB) sound pressure level (SPL). 4.0 mA output

current corresponds to <40 dB. 20.0 mA output current corresponds to 120 dB.

4.3 LOCAL INTERFACES, JUMPERS, AND SWITCHES

4.3.1 Local Controls and Displays

Refer to the Gassonic Observer-i Installation Manual for connection details.

4.3.2 Internal Jumpers and Switches

Refer to the Gassonic Observer-i Installation Manual for connection details.

5.0 DEVICE VARIABLES

There are no device variables available to the user.

6.0 DYNAMIC VARIABLES

There is only one Dynamic Variable available to the user.

6.1 PRIMARY VARIABLE = DECIBEL (dB)

The primary variable (PV) is proportional to the decibel (dB) SPL. 4.0 mA output current corresponds to

<40 dB. 20.0 mA output current corresponds to 120 dB.

Gassonic Observer-iHART

6.2 SECONDARY, TERTIARY, AND QUATERNARY VARIABLES: NOT

APPLICABLE

There are none defined for the Gassonic Observer-i product.

7.0 ERROR/STATUS INFORMATION

The error status, which is returned via Common Practice Command #48, is shown in Table 3

Byte Bit Description Class Device Status

Bits Set

1 0 Low Supply voltage Error 4,7

1 Not Used Error 4,7

2 Acoustic Error Error 4,7

3 Not Used Error 4,7

4 Remote Alarm Line Error Error 4,7

5 Remote Reset Line Error Error 4,7

6 Magnet Switch Error Error 4,7

7 Internal Voltage Error Error 4,7

0 8 Memory Major Error Error 4,7

9 Memory User Error Error 4,7

10 Memory HART Error Error 4,7

11 Memory Event Error Error 4,7

12 Peak dB Low Status 4,7

13 Not Used Error 4,7

14 Not Used Error 4,7

15 Not Used Error 4,7

Table 3: Error/Status Information

These bits may be set at power up to indicate an instrument failure. They may also be set by a failure

detected during continuous background diagnostic testing.

Gassonic Observer-iHART

8.0 UNIVERSAL COMMANDS

Command 3 returns the current loop variable and the primary variable for a total of 9 bytes returned.

Command 9 returns the PV only.

9.0 COMMON PRACTICE COMMANDS

The following common practice commands are implemented.

9.1 SUPPORTED COMMANDS

The following common-practice commands shown in Table 4 are implemented:

Command

Number Byte

Number Meaning

Command 38 N/A Reset Configuration Changed Flag

Command 48 0 Returns Priority Fault, High Byte

Command 48 1 Returns Priority Fault, Low Byte

Command 48 2 Returns Error Status (same as Modbus register x02), High Byte

Command 48 3 Returns Error Status (same as Modbus register x02), Low Byte

Command 48 4 Returns Power Cycled Flag

Command 48 5 Returns Event Happened Flag

Command 48 6 Returns 0x01 = “Maintenance Required” or 0x02 = Alarm or Warning

Command 48 7 Returns 0

Table 4: Gassonic Observer-i Common Practice Commands

9.2 BURST MODE

The Gassonic Observer-i does not support Burst Mode.

9.3 CATCH DEVICE VARIABLE

This Gassonic Observer-i does not support Catch Device Variable.

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