CiDRA Sonar Process Monitoring System - Manual (Page 26)

11
SUPPLEMENTARY INSTRUCTIONS FOR SAFE
ADJUSTMENT
11.1 General
Note: Making adjustments to the meter usually interrupts normal
function of the meter and its outputs. If the meter is being used in a
control loop, this can cause the loop to “open”.
Inform Control Room Personnel that adjustments to the meter are
going to be made to allow them to put the control loop into a manual
mode of operation until adjustments are complete and the meter is
ready to be brought back “on line” in the control loop.
11.2 Transmitter Adjustments
11.2.1 Use of Keypad and RESET Switch
The Zone 2 certification permits the transmitter cover to be opened for
short periods of time while the power is ON for the purpose of making
software configuration adjustments using the keypad or the RESET
button.
This is permitted without the necessity of testing first to be certain that
no hazardous gasses are present. However, it is essential that when
using the keypad or the RESET switch the wiring within the transmitter
not be intentionally or unintentionally disturbed and that the circuitry
inside the transmitter be kept clean and dry.
11.2.2 Use of USB Memory Stick Interface
The USB connector is for use of a USB memory stick and is intended
only for short-term infrequent use. The USB connector may only be
used if the area is known to be free of explosive gas mixtures during
the time immediately prior to, during, and after use of the memory
stick.
The USB connector is behind a tool-enabled cover. Close and secure
this cover over the USB connector after use of the USB interface.
11.2.3 Use of RJ45 Ethernet Connector Interface
This is a diagnostic interface and intended only for short-term
infrequent use. The RJ45 Ethernet connector may only be used if the
area is known to be free of explosive gas mixtures during the time
immediately prior to, during, and after use of the Ethernet interface to
connect to a laptop computer for diagnostic purposes.
20909-01C Rev 04 Page 11-1