GASMAX II Operation & Maintenance Manual, Revision 7.0
Page 34
SYSTEM CONFIGURATION PAGE
The System Config group consists of two pages of menus as shown in Figure 6-2
. ach item’s description
follows in this section.
Figure 7-2: System Config Menu
MEASUREMENT NAME
may be edited to contain virtually any 16-character field and is typically used to
describe the monitored point by user tag number or other familiar terminology. To modify the existing
setting, press the EDIT key when the cursor is pointing to the entry. Use the UP or DN keys to change the
character, and the NEXT key to move to the next character. Press EDIT again when done.
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 Magnetic Wand section 5-2.
ZERO (0%)
defines the reading to be displayed when 4mA (0%) is the GASMAX II output.
SPAN (100%)
defines the reading to be displayed when 20mA (100%) is the GASMAX II output. The
highest reading allowed is 9999 including negative polarity sign. Polarity is only indicated for negative
readings.
DECIMAL POINTS
set the resolution of the LCD readings and may be set for 0, 1 or 2. For example, ZERO
readings for 0, 1 & 2 decimal points displays as
“
0
”
,
“
0.0
”
&
“
0.00
”
.
CAL SPAN VALUE
sets the engineering units value of the calibration gas. GDS Corp recommends that the
calibration gas value be between 25% and 75% of full scale. Calibrating at 100% of scale is not
recommended.
READOUT DEADBAND
forces low values to continue to read zero. This is useful when there are small
amounts of background gases that may cause fluctuating readouts. The highest amount of deadband
allowed is 5%.
NOTE:
THE 4-20MA OUTPUT IS NOT AFFECTED BY THIS SETTING.
TRACK NEGATIVE
allows the display to show negative values when set to “Y ”. This can be helpful
when
troubleshooting sensor problems. The default setting is “ ” and forces the display to read “ ” if
the sensor value drops below zero. However, negative sensor outputs will always cause the Fault alarm to
trip. The 4-20mA output always locks at 4mA when the reading drifts negative.
TEMP COMPENSATION
adjusts sensor output based on ambient temperature. GDS Corp temperature
compensated sensors are preprogrammed with the necessary table of values and are automatically
uploaded to the GASMAX II from the smart sensor. This menu item is not accessible unless a temperature
compensated local Smart Sensor is installed.
S Y S T E M C ON F I G. P G 1
Me a s u r e me n t N a me -
16
E u n i t s X X X X X X X X X X -
10
Z e r o ( 0 %)
(Eunits)
S p a n ( 10 0 %)
(Eunits)
D e c i ma l P o i n t s 0
C a l S p a n V a l 5 0
UP/
DOWN
S Y S T E M C ON F I G. P G 2
*Simple Sensor Installed **Smart Sensor Installed
>
>
>
*
“Restore” available only
without smart sensor installed.
**
“Upload” available only
with smart sensor installed.
R e a d o u t De a d b a n d 0 %
T r a c k N e g a t i v e NO
T e mp C o mp e n s a t i o n
B a c k u p C o n f i g .
*R e s t o r e or **U p l o a d
C a l Ma r k e r 3 . 0 0 mA
T X S e n s o r L i f e N O
Содержание GASMAX II
Страница 57: ......
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