GASSONIC Observer-i User Manual
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GASSONIC Observer-i User Manual

Ultrasonic gas leak detector
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HART USER GUIDE FOR
i
Gassonic Observer-
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

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Summary of Contents for GASSONIC Observer-i

  • Page 1 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.
  • Page 2 Gassonic Observer-i HART This page intentionally left blank.

  • Page 3: Table Of Contents

    Gassonic Observer-i HART Table of Contents GASSONIC OBSERVER-I ......................0  TABLE OF TABLES ........................V  TABLE OF FIGURES ........................V  1.0 INTRODUCTION ........................6      SCOPE ............................6     PURPOSE ..........................6     REFERENCES ........................... 6 2.0 DEVICE IDENTIFICATION ..................... 6 ...
  • Page 4   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  ...
  • Page 5 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  ...

  • Page 6: Gassonic Observer-I

    INTRODUCTION SCOPE The HART configuration of the Gassonic Observer-i ultrasonic 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.

  • Page 7: Product Overview

    Gassonic Observer-i HART 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). 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.

  • Page 8: Product Interfaces

    Gassonic Observer-i. An analog signal (4-20 mA) and relays provide remote and/or discrete indications of the detector’s operation. 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).

  • Page 9: Secondary, Tertiary, And Quaternary Variables: Not Applicable

    Gassonic Observer-i HART SECONDARY, TERTIARY, AND QUATERNARY VARIABLES: APPLICABLE There are none defined for the Gassonic Observer-i product. ERROR/STATUS INFORMATION The error status, which is returned via Common Practice Command #48, is shown in Table 3 Device Status Byte Description...

  • Page 10: Universal Commands

    Returns 0x01 = “Maintenance Required” or 0x02 = Alarm or Warning Command 48 Returns 0 Table 4: Gassonic Observer-i Common Practice Commands BURST MODE The Gassonic Observer-i does not support Burst Mode. CATCH DEVICE VARIABLE This Gassonic Observer-i does not support Catch Device Variable.

  • Page 11: Device Specific Commands

    Gassonic Observer-i HART 10.0 DEVICE SPECIFIC COMMANDS The Device Specific commands are used strictly for the unique features of the Gassonic Observer-i and at the discretion of Gassonic, an MSA company. They are described here in Section 10.0 and are summarized in Table 5.

  • Page 12: Command #139: Reset Alarm

    Gassonic Observer-i HART Command-Specific Response Codes Code Class Description Success No Command-Specific Errors 1 – 2 Undefined Error Passed Parameter Too Large Undefined Error Too Few Data Bytes Received 6 – 15 Undefined Error Access Restricted 17 – 127 Undefined 10.3 COMMAND #139: RESET ALARM...

  • Page 13: Command #141: Set Alarm Relay Configuration

    Gassonic Observer-i HART 10.4 COMMAND #141: SET ALARM RELAY CONFIGURATION This command configures the relay settings. Request Data Bytes Byte Format Description Unsigned-8 Alarm Hi Relay La/nL: 0 – nL, 1 – LA Unsigned-8 Alarm Hi Relay En/dE: 0 – dE, 1 – En...

  • Page 14: Command #143: Read Event Logging Counters

    Gassonic Observer-i HART Command-Specific Response Codes Code Class Description Success No Command-Specific Errors 1 – 15 Undefined Error Access Restricted 17 – 127 Undefined 10.6 COMMAND #143: READ EVENT LOGGING COUNTERS This command reads five event logging counters. Request Data Bytes...

  • Page 15: Command #146: Read Alarm Event Log

    Gassonic Observer-i HART Response Data Bytes Byte Format Description None Command-Specific Response Codes Code Class Description Success No Command-Specific Errors 1-127 Undefined 10.8 COMMAND #146: READ ALARM EVENT LOG This command reads the Alarm Event Log as specified by the event log number. Event 0 is the most recent event.

  • Page 16: Command #147: Read Fault Event Log

    Gassonic Observer-i HART 10.9 COMMAND #147: READ FAULT EVENT LOG This command reads the Fault Event Log as specified by the event log number. Event 0 is the most recent event. Event 1 is the one just before that and so forth.

  • Page 17: Command #149: Set Clock

    Gassonic Observer-i HART Byte Format Description Unsigned-8 Event Minute Unsigned-8 Event Second 10-11 Unsigned-8 Reserved = 0 12-13 Unsigned-8 Code: 4 - Acoustic Test, 8 - Alarm Test and 9 - Piezo Calibrated Command-Specific Response Codes Code Class Description Success...

  • Page 18: Command #150: Read Clock

    Gassonic Observer-i HART 10.12 COMMAND #150: READ CLOCK This command reads the internal real-time clock setting. Request Data Bytes Byte Format Description Response Data Bytes Byte Format Description 0 – 2 Date Date: Day, Month, Year-1900 Unsigned-8 Hours Unsigned-8 Minutes...

  • Page 19: Command #152: Read Run Time Meter

    Gassonic Observer-i HART 10.14 COMMAND #152: READ RUN TIME METER This command reads the internal run time meter. Request Data Bytes Byte Format Description Response Data Bytes Byte Format Description 0 – 3 Unsigned-32 Run Time Meter Value Command-Specific Response Codes...

  • Page 20: Command #155: Get Event Index

    Gassonic Observer-i HART Command-Specific Response Codes Code Class Description Success No Command-Specific Errors 1 – 2 Undefined Error Passed Parameter Too Large Undefined Error Too Few Data Bytes Received 6 – 127 Undefined 10.16 COMMAND #155: GET EVENT INDEX This command reads the event logged index.

  • Page 21: Command #163: Get Fast Changing Information

    Success No Command-Specific Errors 1-127 Undefined 10.18 COMMAND #163: GET FAST CHANGING INFORMATION This command is used to collect data from the Observer-i, which is likely to change at a very fast rate. Request Data Bytes Byte Format Description None...

  • Page 22: Command #164: Get Slow Changing Information

    Success No Command-Specific Errors 1-127 Undefined 10.19 COMMAND #164: GET SLOW CHANGING INFORMATION This command is used to collect data from the Observer-i which is likely to change at a very slow rate. Request Data Bytes Byte Format Description None...
  • Page 23 Gassonic Observer-i HART Byte Format Description Enumerated 2- 5 Unsigned-32 Full Scale Unsigned-8 Alarm Hi level in dB Unsigned-8 Alarm Hi Relay La/nL: 0 – nL, 1 - LA Unsigned-8 Alarm Hi Relay En/dE: 0 – dE, 1 - En...

  • Page 24: Command #166: Get Device Firmware Revision

    Gassonic Observer-i HART 10.21 COMMAND #166: GET DEVICE FIRMWARE REVISION This command reads the Gassonic Observer-i firmware revision. Request Data Bytes Byte Format Description None Response Data Bytes Byte Format Description Unsigned-8 System Firmware Revision. ASCII code Command-Specific Response Codes...

  • Page 25: Command #170: Set Current Range

    Gassonic Observer-i HART 10.23 COMMAND #170: SET CURRENT RANGE This command sets the 4-20mA analog output range. Request Data Bytes Byte Format Description Unsigned-8 0 – Range 3.5 mA – 20 mA, 1 -- Range 1.25 – 20 mA Response Data Bytes...

  • Page 26: Command #172: Set Enhance Mode Ao

    Gassonic Observer-i HART Code Class Description Undefined Error Too Few Data Bytes Received 6 - 127 Undefined 10.25 COMMAND #172: SET ENHANCE MODE AO This command sets the Analog output in Enhance Mode. Request Data Bytes Byte Format Description Unsigned-8 1 –...

  • Page 27: Command #192: Do Calibration

    Gassonic Observer-i HART 10.26 COMMAND #192: DO CALIBRATION This command initiates calibration mode. Request Data Bytes Byte Format Description Response Data Bytes Byte Format Description Command-Specific Response Codes Code Class Description Success No Command-Specific Errors 1 - 15 Undefined Error...

  • Page 28: Command #201: Set Alarm Delay Time

    Gassonic Observer-i HART 10.28 COMMAND #201: SET ALARM DELAY TIME This command sets the alarm delay time. Request Data Bytes Byte Format Description Unsigned 8 Alarm delay: Alarm Delay Time = set value x10s. Ex: Set value =1 mean 1x10s = 10s or set value = 2 means 2x10=20s…...

  • Page 29: Tables

    Gassonic Observer-i HART 11.0 TABLES 11.1 GASSONIC OBSERVER-i DEVICE SPECIFIC COMMANDS SUMMARY The following Table 5 is a summary of the Gassonic Observer-i Device Specific Commands. Command Meaning Number Do Alarm Test Set Alarm Level Reset Alarms Set Relay State...

  • Page 30: Gassonic Observer-I - Operating Modes

    Gassonic Observer-i HART 11.2 GASSONIC OBSERVER-i – OPERATING MODES The following is a summary of the Gassonic Observer-i Operating Modes: Operating Mode Value in Hex Start Up 0x0001 Operational 0x0002 Acoustic Test 0x0004 Calibration 0x0008 Fault 0x0010 Set Up 0x0020...

  • Page 31: Maintenance Event Log - Cause Description

    0x0004 Alarm Test 0x0008 Piezo Calibrated 0x0009 SB100 Test 0x000A Table 9: Gassonic Observer-i Maintenance Event Log – Cause Description 11.6 ALARM EVENT LOG – DETECTION DESCRIPTION Alarm Event Detection Value in Hex By Classic Mode 0x0000 By Enhanced Mode 0x0001 11.7 FAULT EVENT LOG –...

  • Page 32: Performance

    12.3 DEVICE RESET The Gassonic Observer-i cannot be reset by any command. The unit only resets when power is cycled. 12.4 SELF-TEST The Gassonic Observer-i goes through a self-test upon power cycle. Should any of the tests fail, the unit immediately reports a fault condition.

  • Page 33: Operating Modes

    Gassonic Observer-i HART 12.9 OPERATING MODES The Gassonic Observer-i reports dB readings while in RUN mode. Various other modes are used to support the calibration and setup of the instrument. 12.10 WRITE PROTECTION The Gassonic Observer-i does not support any write protection modes.

  • Page 34: Appendix

    Gassonic Observer-i HART 13.0 APPENDIX 13.1 CAPABILITY CHECKLIST Manufacturer, Model, and Revision MSA Gassonic Observer-i Device Type Ultrasonic Gas Leak Detector HART Revision Device Description Available Number and Type of Sensors 1 Microphone Number and Type of Actuators Number and Type of Host Side Signals 1: 4 –...

  • Page 35: Default Configuration

    Gassonic Observer-i HART 13.2 DEFAULT CONFIGURATION Parameter Default value Lower Range Value 40 dB Upper Range Value 120 dB PV Units Decibel (dB) Sensor type Microphone Number of wires Damping time constant Fault-indication jumper Write-protect jumper Number of response preambles...

  • Page 36: Device Description Language Menu

    Gassonic Observer-i HART 13.3 DEVICE DESCRIPTION LANGUAGE MENU Figure 2: Gassonic Observer-i Device Description Menu...
  • Page 37 For pricing or further information, please contact us using the details below Cadmus Products Tel: +44 (0)330 088 0595 info@cadmus.co.uk Email: Website: www.cadmus.co.uk Please note - Product designs and specifications are subject to change without notice. The user is responsible for determining the suitability of this product. Shipping Privacy Policy Brands...

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