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ADDENDUM FOR "METERS" OPTION OF THE TRANSMITTERS
GENERAL DESCRIPTION
This option provides four different indications (meters) inside the transmitter housing. Three meters, "output meters", can be
mounted on the terminal block (field terminals) side; one first is of "analog" type, the second is of "digital" type (LCD, 3 1/2 -digit)
and the third is the CoMeter. All are operated by the output signal of the transmitter. The fourth meter, "integral digital display",
is mounted on the electronics side: it is of "digital" type (LCD, 4-digit), microprocessor driven. The latter is the only one that can
be fitted on the electronic of Profibus-PA transmitter. The integral digital display has 4 different mounting positions. The analog
meters can be rotated to exactly match the mounting position of the transmitter (see Figs. 1, 2 and 5).
Fig. 1 - Analog meter adj.
0
100
4
%
80
60
40
20
20
12
8
16
mA
Zero adj.
ANALOG OUTPUT METER
The analog output meter provides a 90
°
scale indication. It has
either a 0 to 100 linear scale or a 0 to 10 square root scale.
ANALOG OUTPUT METER CALIBRATION
The calibration of the analog type meter only involves zeroing.
Fig. 1 shows the analog output meter and the location of the
zero adjustment.
The calibration is quite simple using one of the following
methods:
- with the loop unpowered adjust the zero screw to read exactly
the true zero mark on the scale (Fig. 1).
- with the transmitter transmitting 4 mA adjust the zero screw
to read exactly the live zero of the scale.
Zero/span
adjustments
Standard position
Multiplication
factor label
Units label
Switches
SW1, SW2 : zero, elev./supp.
SW3, SW4 : span adj.
SW5, SW6 : decimal point posit.
kPa
x 10
Z
S
O
N
1 2 3 4 5 6
Fig. 2 - LCD output meter front view
90
°
max.clockwise
from standard
position
255
°
max.
counter-clockwise
from standard position
DIGITAL OUTPUT METER
The digital output meter has a 3 1/2-digit, 10 mm (3/8 in) high
liquid crystal display (LCD). The maximum count is 1999.
DIGITAL OUTPUT METER CALIBRATION
The LCD digital type output meter can be calibrated, to indicate
the output current, output as a percentage or the process
value. Meter calibration may be accomplished during calibration
of the transmitter or utilizing the capability of the Smart KT
transmitter as a current generator. However the latter can be
used only in conjunction with the Hand Held Communicator or
a suitable P.C. based program.
