TN5FCXA2VG-E
38
6
For adjusting the measuring range, carry out zero adjustment first, and span adjustment next
using : external screw, Hand Held communicator, LCD display or Hart software. (If zero ad-
justment is performed after span adjustment, the 100% point may not be adjusted correctly.)
Zero point is LRV (0%) and span is URV (100%).
6.1 Adjustment procedure with the external screw
6.1.1 Zero adjustment
Zero point of the transmitter is adjustable by the external screw.
Zero adjustment in flameproof area can only be done locally by using the external screw
on the transmitter housing and without opening the cover.
1) Set the mode setting switch to zero position
(2) Apply standard input pressure corresponding to Lower Range Value (LRV - 0%).
(3) Adjust zero point by turning the external screw
ADJUSTMENT AND SETTING
In the case of a flameproof transmitter, do not open the cover from amplifier
case to make following adjustments with active DC power supply.
Notes :
1) If the transmitter is locked, it can't be
adjusted by the external adjustment
screw.
2) When a digital indicator is attached to
the transmitter, make sure that the LCD
lamp “ZERO” is ON.
Increase
Decrease
Fine adjustment
: turning slowly
(approximately 5 sec per turn)
Rough adjustment : turning quickly
(approximately 1 sec per turn)
DANGER
After adjustment, the transmitter must be kept energized for at least 10
seconds data recording completion into memory.
INDICATION
External adjustment screw
Set switch
to “ZERO”
position for
zero calibration
O
RE
Z
N
AP
S