5.1.2. Calibration
To
calibrate
the Level Recorder using the signals from the Analyzer proceed as follows:
1. Fit Recording Paper
QP
0102
to
the Level Recorder.
2.
Set the following controls on the Level Recorder:
PEN LIFT & STANDBY:
SIGNAL MODE:
AC AVERAGING:
AC
DYN.
RANGE:
DC OFFSET:
FINE SENSITIVITY:
PAPER SPEED:
COARSE SENSITIVITY:
PAPER DRIVE:
POWER:
PEN SPEED:
"Out"
"DC
Lin+"
"Fast"
"50
dB"
To
be adjusted
"-12
dB"
"Ext."
"3,16
V"
"In"
"On"
"Out"
3.
Switch on the Analyzer and allow the
self-test
routine
to
run (see
Chapter
3
for
power
supply details, etc.).
AO 0087 BNC Cable
Level
Recorder
Type 2317
AQ
0034 Remote Control Cable
85001 7
Fig. 5.2. Connection
of
Level
Recorder
Type 2317 to
Indoor
Climate
Analyzer
44
4.
Select the desired units
of
measurements using the
"120/Units"
pushkey on the
Analyzer (i.e.
Metric
or
Imperial).
Important Note: The full scale readings
for
Metric
and Imperial units are different.
Care should be taken
to
both
calibrate
and
plot
in the same system
of
units.
5.
Press the
"Replay/Plot"
pushkey on the Analyzer. The Display will indicate
DIS
PLAY
0 R P L 0 T ? . Press the "Replay
/Plot"
push key again and the Display will
indicate
ZERO
CAL
I
BRAT
I
ON.
Adjust
the
"DC
OFFSET" on the Level Recorder
until the pen lines up with the centre
of
the Recorder Paper (see Fig. 5.3). The
ZERO
CAL
I
BRAT
I
ON
output
from the Analyzer
corresponds
to
a zero
voltage
output.
6.
Press the
"Replay/Plot"
pushkey on the Analyzer. The Display will indicate GAIN
CAL
I
BRAT
I
ON.
Adjust
the "FINE SENSITIVITY" on the Level Recorder until the
pen
lines up with the left-hand line on the Recorder Paper. The GAIN
CAL
I
BRA
T I 0 N output from the Analyzer
corresponds
to
an
output
voltage
of
+ 5
V.
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