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items/sub menus. Use EDIT key to display the cursor, then activate UP / DOWN key to change
that character, activate NEXT to move the cursor, then activate EDIT key again to load the new
item and remove the cursor. Activate NEXT to back out of the sub-menu. To view SETUP PAGE
2, activate the DOWN key with the pointer aimed at the bottom item on PAGE 1.
5.3 System Configuration Menus:
The System Config. group consists of two pages of menus as shown in Figure 5-3. Each item’s
description follows in this section.
Measurement Name may be edited to contain virtually any 16-character ASCII field. It is
typically used to describe the monitored point by user tag # or other familiar terminology.
Eunits (engineering units) may have up to a 10 character ASCII field. Many common gases
have pre-configured Eunits based upon the sensor type and each may be edited in this menu as
described in Configuration Using the Magnet section 5-2.
Zero (0%) defines the reading to be displayed when 4mA (0%) is the ECO-A-X’s output.
Span (100%) defines the reading to be displayed when 20mA (100%) is the ECO-A-X’s output.
The highest reading allowed is 9999 includes negative polarity sign and one decimal point.
Polarity is only indicated for negative readings.
Decimal Points sets the resolution of the LCD readings and may be for 0, 1 or 2. Example:
ZERO readings for 0, 1 & 2 DP’s respectively are 0, 0.0 & 0.00.
Cal Span Value sets what upscale value must be applied when performing Span calibrations.
Readout Deadband allows forcing low values to continue to read zero. This is useful when
there are small amounts of background gases that cause fluctuating readouts above zero. The
highest amount of deadband allowed is 5%. The 4-20mA output is not affected by this menu
item.
Track Negative, set to NO, causes negative values to read the Zero (0%) value in data
displays. The CAL MODE readout displays negative values regardless of this setting and
negative values below the Fault set point will still cause the Fault alarm to trip. The 4-20mA
output always locks at 4mA when the reading is negative.
