5 Operation
This section covers operation techniques and guidelines along with the configuration and
calibration.
NOTE
Calibrate the instrument according the instructions given in this section, otherwise
it could lead to measurement error.
5.1 Local Operation and Display
Tek-Bar 3120B is available with the optional LCD display. The local display enables user to
read important parameters directly at the measuring point and configure the device using
the function matrix. The display indicates output and diagnostic messages. It features a
two-line display with 5-digit. The first line displays measured value and the second line
displays the engineering units. If LCD display is not available, then use HART for
communication (Refer section 5.4).
5.2 Operation in safe and hazardous area
The internal and external buttons are provided for operation in safe and hazardous areas
respectively.
x
While operating in safe area, open the front cover and use internal buttons.
x
While operating in hazardous area, slide the nameplate located at the upper side of
the transmitter and use the external buttons.
External buttons for operation in hazardous area
5.3 Configuration
This section provides detailed information of initial setup required for transmitter
functioning.
The device consists of 3 operation key: S, Z and M which are used to set parameters and
perform various operations. The primary function of each key is mentioned as below.
