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. . . ADDENDUM FOR "METERS" OPTION OF THE TRANSMITTERS
This display is also used for diagnostic messages occurring
either during normal operation or during calibration of the
transmitter operation. The diagnostics are displayed in two four
letter words alternating every two seconds. Only the highest
priority message will appear at any time. The following messages
are pertinent to the calibration operations:
DSBL ZERO or DSBL SPAN : indicates an attempt to use the
calibration devices while they are software disabled.
FAIL ZERO or FAIL SPAN: indicates that the input value
exceeds the maximum allowed turndown or that the pressure
input is outside of the sensor limits.
PASS ZERO or PASS SPAN: indicates that the zero or span
calibration procedure has been correctly performed and accepted.
The output will assume the expected value (4 or 20 mA).
FAIL or EPR2 FAIL: indicates a failed attempt to write in the
EEPROM #2.
See also addendum use of hardware links on the secondary
electronics.
METER INSTALLATION OR REPLACEMENT
WARNING - If the transmitter is not certified as
Intrinsic Safety type, DO NOT REMOVE ANY COVER
in areas classified as "HAZARDOUS LOCATIONS:
CAN RESULTS
IN HAZARD OF FIRE AND
EXPLOSION". Contact your Safety Dpt. in order to
establish correct installation procedure.
ANALOG OR DIGITAL OUTPUT METER
To install (or to replace) the meter, use the following procedure:
1) If the transmitter is part of a control loop, put the loop in
manual.
2) Remove the cover on the terminal block side; inside of
which is affixed the label shown in Fig. 4.
Fig. 4 - Cover Internal label
3) Remove the link shown on the label by pushing down at its
left extremity and then its right . Alternatively it can be
removed on the left side only in preparation for a further
refit.
4) Plug the meter into the socket. The digital indication meter
can rotate, for easy viewing, in 15° steps, 90° degree
clockwise and 255° counterclockwise, as shown in figure 2.
Further rotation causes damage to the meter stops or to the
"banana" connections and should be avoided. Note that
considerable effort must be applied for 15° rotation. The
analog output meter can also rotate for easy viewing.
5) Check that the cover O-ring gasket is properly in place,
screw on the extended windowed cover and tighten properly.
To remove the meter simply pull it out from the socket and fit
a replacement following the above procedure.
CAUTION - If the meter is removed, ensure that it is
replaced immediately by another one or with the proper
link provided. This operation is important for I.S.
loop operation.
INTEGRAL DIGITAL DISPLAY MICROPROCESSOR DRIVEN
The Microprocessor Driven Integral Display can be installed
simply by plugging it into the connector provided in the secondary
electronics and replacing the blind cover with a windowed one.
To provide an easy view, the indicator can be installed in 4
different positions, in steps of 90°. The indicator is provided
with 4 female connectors, equally spaced at 90°, while the
secondary electronics is provided with one female connector,
marked "METER". An 8 pin insert, supplied with the meter,
should be positioned in order to connect the two female
connectors with the indicator in the required position.
Proceed, with reference to the fig. 9 of the Transmitter Operating
Manual, as follows:
1) Switch Off the transmitter power supply
2) Remove the blind cover in the electronics side.
Verify the correct position of the hardware links (Refer to
the proper ADDENDUM).
3) Fit the insert in to the electronics connector, place the
indicator in the required position, check that the connectors
match, and push, with both thumbs, until the two parts hook
together.
4) Screw on the windowed cover.
5) Switch on the transmitter power supply
To replace a Microprocessor Driven Integral Display
proceed as follows:
1) Switch Off the transmitter power supply
2) Remove the windowed cover in the electronics side.
Unscrew the two fixing screws and remove the secondary
electronic assembly. Unplug the sensor cable. Lift gently
the 4 plastic hooks and disengage the two units.
Proceed now as indicated at point 3) to 5) above and don't
forget to adjust the hardware links on the display.
- 19 -
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