7
3.0 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).
3.1 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. Using a PC-based software
application and a HART interface modem, for example, allow operators to access information from the
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 Observer-i Instruction Manual) and connected to a PC, host
application, or handheld terminal, the master will begin communication to the 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.
To Next Page
Loading...
