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HART USER GUIDE FOR

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

Summary of Contents for Observer-i

Page 1: ...osed 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...

Page 2: ...Gassonic Observer i HART ii This page intentionally left blank...

Page 3: ...ERFACES 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 INFORM...

Page 4: ...IRMWARE 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 COMM...

Page 5: ...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 Ta...

Page 6: ...s 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 Docume...

Page 7: ...ss 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 Manu...

Page 8: ...log 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...

Page 9: ...or 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 Erro...

Page 10: ...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 Err...

Page 11: ...turns Alarm test mode on off Request Data Bytes Byte Format Description 0 Unsigned 8 N A Response Data Bytes Byte Format Description 0 Unsigned 8 N A Command Specific Response Codes Code Class Descri...

Page 12: ...Received 6 15 N A Undefined 16 Error Access Restricted 17 127 N A Undefined 10 3 COMMAND 139 RESET ALARM This command resets the latching Alarm relay Request Data Bytes Byte Format Description None N...

Page 13: ...larm Hi Relay La nL 0 nL 1 LA 1 Unsigned 8 Alarm Hi Relay En dE 0 dE 1 En Command Specific Response Codes Code Class Description 0 Success No Command Specific Errors 1 2 Undefined 3 Error Passed Param...

Page 14: ...esponse Data Bytes Byte Format Description 0 1 Unsigned 16 0 2 3 Unsigned 16 Alarm Event Counter 4 5 Unsigned 16 Fault Event Counter 6 7 Unsigned 16 Maintenance Event Counter 8 9 Unsigned 16 Calibrate...

Page 15: ...vent 1 is the one just before that and so forth Request Data Bytes Byte Format Description None N A N A Response Data Bytes Byte Format Description 0 3 Unsigned 32 Event Running Time in Seconds 4 6 Da...

Page 16: ...ent Minute 9 Unsigned 8 Event Second 10 11 Unsigned 16 Event Cause See device specific table Command Specific Response Codes Code Class Description 0 Success No Command Specific Errors 1 127 Undefined...

Page 17: ...d 10 11 COMMAND 149 SET CLOCK This command sets the internal real time clock Request Data Bytes Byte Format Description 0 2 Date Date Day Month Year 1900 3 Unsigned 8 Hours 4 Unsigned 8 Minutes 5 Unsi...

Page 18: ...mmand Specific Response Codes Code Class Description 0 Success No Command Specific Errors 1 127 Undefined 10 13 COMMAND 151 SET RUN TIME METER This command sets the internal run time meter Request Dat...

Page 19: ...Time Meter Value Command Specific Response Codes Code Class Description 0 Success No Command Specific Errors 1 127 Undefined 10 15 COMMAND 154 SET EVENT INDEX This command sets the index of logged eve...

Page 20: ...index Request Data Bytes Byte Format Description None N A N A Response Data Bytes Byte Format Description 0 Unsigned 8 Event index Command Specific Response Codes Code Class Description 0 Success No C...

Page 21: ...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 N A N A Response D...

Page 22: ...e Request Data Bytes Byte Format Description None N A N A Response Data Bytes Byte Format Description 0 1 Signed 16 Unit Temperature 2 5 Float Supply Voltage 6 7 Signed 16 Reserve Command Specific Res...

Page 23: ...12 Unsigned 8 N A 13 Unsigned 8 N A 14 Unsigned 8 N A 15 Unsigned 8 Alarm Delay Time 16 Unsigned 8 N A 17 Unsigned 8 N A 18 Unsigned 8 N A 19 20 Unsigned 16 N A 21 Unsigned 8 Enhance Mode Analog Outp...

Page 24: ...Codes Code Class Description 0 Success No Command Specific Errors 1 127 Undefined 10 22 COMMAND 169 LOAD FACTORY DEFAULT SETTING This command will load the factory default settings Request Data Bytes...

Page 25: ...Description 0 Success No Command Specific Errors 1 2 Undefined 3 Error Passed Parameter Too Large 4 Undefined 5 Error Too Few Data Bytes Received 6 127 Undefined 10 24 COMMAND 171 SET DETECTION MODE T...

Page 26: ...or Alarm 2 Discrete 4mA Stand by 16mA for Warn and 20mA for Alarm 3 Full SPL 4 20mA for 40 to 120dB Response Data Bytes Byte Format Description 0 Unsigned 8 1 Discrete SPL 4 12mA for 40 120dB 16mA for...

Page 27: ...ass Description 0 Success No Command Specific Errors 1 15 Undefined 16 Error Access Restricted 17 127 Undefined 10 27 COMMAND 195 DO ACOUSTIC TEST This command initiates Acoustic Test mode Request Dat...

Page 28: ...lay Alarm Delay Time set value x10s Ex Set value 1 mean 1x10s 10s or set value 2 means 2x10 20s Response Data Bytes Byte Format Description 0 Unsigned 8 Alarm delay Command Specific Response Codes Cod...

Page 29: ...unters 146 Read Alarm Event Log 147 Read Fault Event Log 148 Read Maintenance Log 149 Set Time Clock 150 Read Time Clock 151 Set Running Time 152 Read Running Time 154 Set Event Index 155 Read Event I...

Page 30: ...Not Used 0x8000 Table 6 Gassonic Observer i Operating Modes 11 3 GASSONIC OBSERVER i CALIBRATION SUBMODE This mode indicates the calibration status during the calibration Operating Submode Value in H...

Page 31: ...Alarm Event Detection Value in Hex By Classic Mode 0x0000 By Enhanced Mode 0x0001 11 7 FAULT EVENT LOG CAUSE DESCRIPTION The following Table 10 describes the cause as reported by the read event log c...

Page 32: ...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 12 5 COMMAND RESPONSE...

Page 33: ...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 d...

Page 34: ...umber and Type of Sensors 1 Microphone Number and Type of Actuators 0 Number and Type of Host Side Signals 1 4 20 mA analog Number of Device Variables 0 Number of Dynamic Variables 1 Mapable Dynamic V...

Page 35: ...Default value Lower Range Value 40 dB Upper Range Value 120 dB PV Units Decibel dB Sensor type Microphone Number of wires 3 Damping time constant N A Fault indication jumper N A Write protect jumper N...

Page 36: ...Gassonic Observer i HART 36 13 3 DEVICE DESCRIPTION LANGUAGE MENU Figure 2 Gassonic Observer i Device Description Menu...

Page 37: ...pricing or further information please contact us using the details below Cadmus Products Tel 44 0 330 088 0595 Email info cadmus co uk Website www cadmus co uk Please note Product designs and specific...

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