Emerson Process Management OXYMITTER 4000 instruction manual Lockout, LOI Features

Instruction Manual

IB-106-340C Rev. 4.1 July 2004

Hazardous Area Oxymitter 4000

			TOUCH					b. Lockout
SELECTION			CONFIRMATION					The Local Operator Interface (LOI) has
			LED		SELECTION
ARROW						ARROW		a lockout feature that prevents nuisance
							LCD	actuation by someone brushing against the
								glass window, raindrops, dirt, insects, etc.
							DISPLAY
							WINDOW	This lockout mode is automatically estab-
								lished when no buttons are pushed for 30
								seconds (default). This countdown to lock-
								out is configurable.
								In order to unlock the display, input a "Z"
								pattern. First, push the top left (gray) arrow,
								then the top right, followed by the bottom
								left and finally the bottom right. The "LK"
								notation in the upper right corner of the
								display will now disappear. Push the gray
								arrow at the top left hand corner once more
								to enter into the menu structure. Once one
								moves deeper into the menu structure,
			SELECTION				37260054	additional time is provided to the user so
			ARROWS					that the lockout initiation does not become
		Figure 6-3.		LOI Features				a nuisance. This additional “revert” time is
								defaulted at one hour and is also user con-
								figurable.
6-3 NAVIGATING THE LOCAL OPERATOR								6-4 LOI KEY DESIGNATIONS
INTERFACE								The gray key (top left) key will move one level
a. Overview								higher in the menu structure. When entering
	The Local Operator Interface (LOI), shown							numbers, this key will move the cursor to the
								left. This key also doubles as an “Enter” key,
	in Figure 6-3, utilizes a bright blue gas-							once numbers are entered, and when the cursor
	florescent display. Intensity is adjustable.							is moved to it’s left-most position. The new data
	There is an Infra-red LED source and a							entry value will appear in the top line of the LOI
	detector for each key. The detectors can							display once it’s accepted.
	detect a finger placed above the button
	through the glass window. There is no need							The blue key (bottom left) acts as a selector
	to open the instrument in bad weather or in							when choosing from among a number of menu
	hazardous areas in order to access the							items. This key also will move the cursor to the
	electronics.							right when entering numbers.
	It should be noted that the Hazardous Area							Up/Down keys (to the left side of the keypad)
	Oxymitter 4000 also utilizes HART commu-							are used to increment up and down when
	nications, permitting access to all instrument							selecting from a series of menu picks. They are
	functionality anywhere the 4-20 mA signal							also used for incrementing values up and down
	terminates via a HART model 275/375							for data input.
	handheld communicator.

6-2 Startup and Operation with LOI Rosemount Analytical Inc. A Division of Emerson Process Management