GASSONIC Observer-i - 4.4. Switching Modes; Enhanced Mode, Discrete SPL mode (Display=EAO1); Enhanced Mode, Discrete mode (Display=EAO2); Enhanced Mode, Full SPL mode (Display=EAO3)

GASSONIC OBSERVER-i
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4.4. Switching Modes
ClassicMode,(Display=CLSM)   
Function HARTDisabled HARTEnabled(Standard) HARTEnabled(Special)
NormalAnalogOutput 4mAto20mA=40dB(u)to
120dB(u)
4mAto20mA=40dB(u)to
120dB(u)
4mAto20mA=40dB(u)to
120dB(u)
MenuActivated 3mA 3.5mA 3mA
AcousticError 1mA 3.5mA 1.25mA
LowSupplyVoltage 0mA 3.5mA 1.5mA
SB100TestMode 4mAto20mA=40dB(u)to
120dB(u)
4mAto20mA=40dB(u)to
120dB(u)
4mAto20mA=40dB(u)to
120dB(u)
   
EnhancedMode,DiscreteSPL
mode(Display=EAO1):
  
Function HARTDisabled HARTEnabled(Standard) HARTEnabled(Special)
NormalAnalogOutput 4mAto12mA=40dB(u)to
120dB(u)
4mAto12mA=40dB(u)to
120dB(u)
4mAto12mA=40dB(u)to
120dB(u)
AnalogOutput,Warning/Alarm 16/20mA 16/20mA 16/20mA
MenuActivated 3mA 3.5mA 3mA
AcousticError 1mA 3.5mA 1.25mA
LowSupplyVoltage 0mA 3.5mA 1.5mA
SB100TestMode 1.5mA 3.5mA 1.5mA
   
EnhancedMode,Discrete
mode(Display=EAO2):
  
Function HARTDisabled HARTEnabled(Standard) HARTEnabled(Special)
NormalAnalogOutput 4mA 4mA 4mA
AnalogOutput,Warning/Alarm 16/20mA 16/20mA 16/20mA
MenuActivated 3mA 3.5mA 3mA
AcousticError 1mA 3.5mA 1.25mA
LowSupplyVoltage 0mA 3.5mA 1.5mA
SB100TestMode 1.5mA 3.5mA 1.5mA
   
EnhancedMode,FullSPL
mode(Display=EAO3):
  
Function HARTDisabled HARTEnabled(Standard) HARTEnabled(Special)
NormalAnalogOutput 4mAto20mA=40dB(u)to
120dB(u)
4mAto20mA=40dB(u)to
120dB(u)
4mAto20mA=40dB(u)to
120dB(u)
AnalogOutput,Warning/Alarm 4mAto20mA=40dB(u)to
120dB(u)
4mAto20mA=40dB(u)to
120dB(u)
4mAto20mA=40dB(u)to
120dB(u)
MenuActivated 3mA 3.5mA 3mA
AcousticError 1mA 3.5mA 1.25mA
LowSupplyVoltage 0mA 3.5mA 1.5mA
SB100TestMode 1.5mA 3.5mA 1.5mA
Table 1: Analog Output Level
When HART is selected, the output current changes to comply with the HART Foundation
requirements. The HART Foundation does not specify current below 3.5 mA. In normal HART mode,
the actual current does not go below 3.5 mA. Modbus reports the analog output as if HART was not
there. This allows users to use a constant Modbus program. When the alarm relay is latched, the