GASMAX II + GDS-IR Operation & Maintenance Manual, Revision 1.1
Page 32
TECHNICAL PAGE MENU
The TECHNICAL PAGE menu is used to adjust certain parameters associated with local or remote sensors.
To access the TECHNICAL PAGE menu, enter the Main Menu, move the cursor to the second page and
select Technicians Only. Enter the key sequence
(four “ P” keys)
to activate the TECHNICAL PAGE menu.
WARNING:
TARGET GAS MONITORING AND ALARM PROCESSING ARE NOT ACTIVE WHILE IN THIS MENU.
Figure 7-12: Technical Page Menu
SET BALANCE
adjusts the balance of a bridge-type sensor and must only be performed with ZERO gas on
the sensor. Balance is similar to a very coarse ZERO calibration and does not need to be precise since
subsequent calibrations will correct for small errors. ZERO gas applied to the sensor should provide a
Reading of
–
3 to +3 on the SENSOR BALANCE menu.
SET VOLTAGE
adjusts the excitation voltage applied to bridge type sensors and may vary from 2 to 6
volts. Local Smart Sensors automatically adjust the excitation voltage to match the needs of the sensor.
Remote sensors require manual adjustment. Excitation voltage must be measured
at the sensor
;
therefore, if the sensor is mounted some distance away from the GASMAX II, the excitation voltage may
have to be higher to compensate for losses in field wiring.
S E N S O R
B A L A N C E
R e a d i n g
- 3
C o u n t s
4 9 6
U P / D N
t o
C h a n g e .
N E X T
t o
E x i t .
S E N S O R
V O L T A G E
V o l t s
2 . 0 4
U P / D N
t o
C h a n g e .
N E X T
t o
E x i t .
W A R N I N G !
H i g h
v o l t a g e
m a y
d a m a g e
s e n s o r
* * * * * W A R N I N G * * * * *
P r e v i o u s
C a l i b r a t i o n
w i l l
b e
e r a s e d .
E D I T
t o
c o n f i r m .
N E X T
t o
e x i t .
G a i n = U n i t y
E D IT
E D IT
P G A
S E T U P
G a i n
2 5 . 0 %
C o u n t s
1 0 1 1
R e a d i n g
1 0 0
U p / D n
t o
C h a n g e .
N e x t
t o
e x i t .
S E L E C T
I N P U T
C a t - B e a d
( 3 - W i r e )
U P / D O W N
t o
c h a n g e
E D I T
t o
s e l e c t
N E X T
t o
e x i t
S E N S O R B A L A N C E & S E N S O R V O LT A G E
m e n u s a r e o n ly a c tiv e w h e n in p u t ty p e =
“ C a t- B e a d ” 3 - W ire ”
S E L E C T
E U N I T S
E D IT
%
L E L
[
C u s t o m
]
S e t
B a l a n c e
S e t
S e n s o r
V o l t a g e
S e t
G a i n
t o
U N I T Y
P r e A m p
G a i n
S e t
I n p u t
T y p e
Z E R O
C a l
V a l
0
>
>
>
>
>
T E C H N I C A L
P A G E
2
R a w
M i n
C n t s
5 1 1
R a w
M a x
C n t s
1 0 0 0
M a r k e r
A c t i v e
Y e s
M a r k e r
T X
L E D
N O
M a r k
L e v e l
3 . 0 m A
M a r k
A s
* * M E S S A G E *
T E C H N I C A L
P A G E
1
