Moore FCT [UB], Manual

Page: 5 / 10

FCT [UB]
Page 5
The Interface Solution Experts
Calibration
Prior to shipment, every FCT [UB] is subjected to
rigorous testing by our team of skilled technicians.
Every product Moore Industries manufactures, sells
and services is guaranteed to meet the strict quality
standards that have become synonymous with our
name.
Before placing your FCT [UB] into service, a bench
check of basic operation is recommended to ensure
that the unit hasn’t sustained any damage during
transit.
Every unit should be:
• Checked to verify that the appropriate FCT [UB]
model has been ordered for the intended application.
• Connected in a calibration setup (described later in
this section) and checked for desired output.
• Adjusted for desired zero and span.
Even if a unit has been configured to your specifica-
tions by the factory (factory calibration), it is a good
idea to perform this calibration as a simple bench
check. The procedures provide a safe means to
uncover any unit damage that may have occurred
during shipping, and offer a simple familiarization
with FCT [UB] operation in the safety of a testing
environment, separate from the intended process or
application.
These procedures should be carried out in an
environment considered appropriate for general
testing of electronic equipment, rather than in the
field. Use a technician’s bench or a similar, lab-
type environment.
Table 1.
Calibration Equipment
Equipment Specifications
Voltage
or Current
Source
Power
Source
Multimeter,
Ammeter, or
Voltmeter
Load
Resistor
Screwdriver
Calibrated, adjustable source unit, capable
of discrete output levels, ±0.025%, in the
approrpriate range.
AC or DC, from 22-300Vdc or 90-260Vac
Calibrated meter capable of verifying output,
level, current or voltage. Accuracy 0.025%.
A voltmeter may be used in combination with
a load resistor for measuring current
outputs.
Required for verifying current outputs with
voltmeter only. Tolerance of ±0.01%,
minimum. Use 250 ohm resistor with current
output ranges from 0-50mA.
Blade tip width <2.54 mm (0.10 in.) maximum
Setting Up for Zero/Span
Calibration
The equipment listed in Table 1 is needed when
calibrating the FCT [UB]. These items are not
supplied by Moore Industries, but should be
available in most testing labs.
Be sure to use calibrated test equipment when
performing the bench check and zero/span
adjustment of the FCT [UB]. The use of inaccurate
test equipment will result in unreliable settings and
precipitate costly process down-time.
Figure 1 shows the basic hookup used in the
calibration procedures. Use a screwdriver to loosen
terminal screws and connect appropriate leads to
the labeled terminals. With connections completed
as shown, apply the appropriate power to the setup
and allow a few minutes for stabilization/warm-up.