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HART USER GUIDE FOR
O
-i
BSERVER
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 General
Monitors, an MSA company.
Instruction Manual
12-15
MSA reserves the right to change published
specifications and designs without prior notice.
Part No.
MANObserver-iH
Revision
C/12-15
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Summary of Contents for MSA General Monitors OBSERVER-i
- Page 1 General Monitors, an MSA company. Instruction Manual 12-15 MSA reserves the right to change published specifications and designs without prior notice. Part No. MANObserver-iH Revision C/12-15...
- Page 2 OBSERVER-i HART This page intentionally left blank.
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Page 3: Table Of Contents
OBSERVER-i HART Table of Contents 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 3.0 PRODUCT OVERVIEW ......................7 GETTING STARTED ......................... - Page 4 OBSERVER-i HART 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 ............
- Page 5 OBSERVER-i HART 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: Observer-i Common Practice Commands .....................
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Page 6: Observer-I
OBSERVER-i HART INTRODUCTION SCOPE The HART configuration of the 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
OBSERVER-i HART PRODUCT OVERVIEW The Observer-i is an ultrasonic gas leak detector for detecting pressurized gas leaks. The 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 Observer-i detector, users may employ several means including HART handheld communicators or PC-based systems. -
Page 8: Product Interfaces
OBSERVER-i HART 4.0 PRODUCT INTERFACES 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 Observer-i. -
Page 9: Secondary, Tertiary, And Quaternary Variables: Not Applicable
OBSERVER-i HART SECONDARY, TERTIARY, AND QUATERNARY VARIABLES: APPLICABLE There are none defined for the 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 Class Bits Set Low Supply voltage Error Not Used... -
Page 10: Universal Commands
OBSERVER-i HART 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. COMMON PRACTICE COMMANDS The following common practice commands are implemented. SUPPORTED COMMANDS The following common-practice commands shown in Table 4 are implemented: Command Byte... -
Page 11: Device Specific Commands
DEVICE SPECIFIC COMMANDS The Device Specific commands are used strictly for the unique features of the Observer-i and at the discretion of General Monitors, an MSA company. They are described here in Section 10.0 and are summarized in Table 5. -
Page 12: Command #139: Reset Alarm
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 This command resets the latching Alarm relay. -
Page 13: Command #141: Set Alarm Relay Configuration
OBSERVER-i HART 10.4 COMMAND #141: SET ALARM RELAY CONFIGURATION This command configures the relay settings. Request Data Bytes Byte Format Description Alarm Hi Relay La/nL: 0 – nL, 1 – LA Unsigned-8 Alarm Hi Relay En/dE: 0 – dE, 1 – En Unsigned-8 Response Data Bytes Byte... -
Page 14: Command #143: Read Event Logging Counters
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 Byte Format Description... -
Page 15: Command #146: Read Alarm Event Log
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
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. Request Data Bytes Byte Format... -
Page 17: Command #149: Set Clock
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 No Command-Specific Errors 1-127 Undefined 10.11 COMMAND #149: SET CLOCK... -
Page 18: Command #150: Read Clock
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 Unsigned-8 Seconds Command-Specific Response Codes Code... -
Page 19: Command #152: Read Run Time Meter
OBSERVER-i HART Code Class Description 6 – 127 Undefined 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 Code... -
Page 20: Command #155: Get Event Index
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. Request Data Bytes Byte Format... -
Page 21: Command #163: Get Fast Changing Information
OBSERVER-i HART Response Data Bytes Byte Format Description Unsigned-32 Event Running Time (in Seconds) Event Date: Day, Month, Year – 1900 Date Unsigned-8 Event Hour Unsigned-8 Event Minute Unsigned-8 Event Second Code: 4 - Cal. OK, 5 – Cal. Adjusted, 6 – Cal. Error. Unsigned-8 Command-Specific Response Codes Code... -
Page 22: Command #164: Get Slow Changing Information
OBSERVER-i HART 18-21 Float Peak dB Command-Specific Response Codes Code Class Description 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... - Page 23 OBSERVER-i HART Byte Format Description Enumerated 2- 5 Unsigned-32 Full Scale Unsigned-8 Alarm Hi level in dB Alarm Hi Relay La/nL: 0 – nL, 1 - LA Unsigned-8 Alarm Hi Relay En/dE: 0 – dE, 1 - En Unsigned-8 Unsigned-8 Unsigned-8 Unsigned-8 Unsigned-8...
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Page 24: Command #166: Get Device Firmware Revision
OBSERVER-i HART 10.21 COMMAND #166: GET DEVICE FIRMWARE REVISION This command reads the 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 Code Class Description Success No Command-Specific Errors... -
Page 25: Command #170: Set Current Range
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 0 – Range 3.5 mA – 20 mA, 1 -- Range 1.25 – 20 mA Unsigned-8 Response Data Bytes Byte Format Description... -
Page 26: Command #172: Set Enhance Mode Ao
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 1 – Discrete SPL (4-12mA for 40-120dB, 16mA for Warn, 20mA Unsigned-8 for Alarm) 2 –... -
Page 27: Command #192: Do Calibration
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 Access Restricted 17 - 127 Undefined 10.27 COMMAND #195: DO ACOUSTIC TEST... -
Page 28: Command #201: Set Alarm Delay Time
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
OBSERVER-i HART 11.0 TABLES 11.1 OBSERVER-i DEVICE SPECIFIC COMMANDS SUMMARY The following Table 5 is a summary of the Observer-i Device Specific Commands. Command Meaning Number Do Alarm Test Set Alarm Level Reset Alarms Set Relay State Reset Event Happening Flag Read Event Logging Counters Clear Event Logging Counters Read Alarm Event Log... -
Page 30: Observer-I - Operating Modes
OBSERVER-i HART 11.2 OBSERVER-i – OPERATING MODES The following is a summary of the Observer-i Operating Modes: Operating Mode Value in Hex Start Up 0x0001 Operational 0x0002 Acoustic Test 0x0004 Calibration 0x0008 Fault 0x0010 Set Up 0x0020 SB100 Test 0x0040 Alarm Test 0x0080 Cal. -
Page 31: Maintenance Event Log - Cause Description
OBSERVER-i HART 11.5 MAINTENANCE EVENT LOG – CAUSE DESCRIPTION This event cause indicates the type of maintenance. Maintenance Event Cause Value in Hex Acoustic Test 0x0004 Alarm Test 0x0008 Piezo Calibrated 0x0009 SB100 Test 0x000A Table 9: Observer-i Maintenance Event Log – Cause Description 11.6 ALARM EVENT LOG –... -
Page 32: Performance
OBSERVER-i HART 12.0 PERFORMANCE 12.1 SAMPLING RATES The Observer-i samples the input signal from Microphone in 10 millisecond intervals. 12.2 POWER-UP On power up, the Observer-i executes a self-test procedure, which requires approximately 30 seconds. During this time, the Analog Output is set to1.25 mA or 3.5 mA depending on the setting. After the self- test is satisfactorily completed, the unit sets the Primary Variable to a value representing the mode of the instrument. -
Page 33: Operating Modes
OBSERVER-i HART 12.9 OPERATING MODES The 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 Observer-i does not support any write protection modes. -
Page 34: Appendix
OBSERVER-i HART 13.0 APPENDIX 13.1 CAPABILITY CHECKLIST Manufacturer, Model, and Revision MSA 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 1: 4 – 20 mA analog... -
Page 35: Default Configuration
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 Table 13: Default Configuration... -
Page 36: Device Description Language Menu
OBSERVER-i HART 13.3 DEVICE DESCRIPTION LANGUAGE MENU Diag/Service Menu 1) Power Supply Volts 2) Power Cycle Flag 3) Unit Temperature Observer i 4) Peak dB 5) Reset Alarm Root Menu 6) Operating Mode 1) Device Setup Menu 7) Alarm Test 2) Calibration Menu Alarm Event Log Menu 8) Acoustic Test...
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