Model
552SA
Distance Measurements
6-20
Adju
s
tin
g for
Humidit
y
The
10751A
Air
Sensor
has
a "
Humidity"
switch
on on
e side (opposite
its
connecting cable).
You
must
set
Ihe switch handle
to
the position corresponding
tathe
relative humidity in the
area
you
are
measuring. The choices are "
25'
Ai
", "50
'X-.
", and "75
W,".
Measurement
Di
splay Settings (with sensors)
Meas
ur
emenl Mode Keys
DI
STANCE
8 Push
.h
e DISTANCE key.
Set-
up
K
eys
N
OTES
1. To
enter
a value for an y key -
a.
Use
the
ENTRY
keys
to
specify the numeric value. then -
b. Prcss the key to assign the value to that key.
2. To check
Ihe
current status
of
any
of
these keys, just press the
key. Then press the key again, to return
to
the
mode
you se-
lected
earlier.
3.
More
information
about each key
is
available in Section 16
of
Ihis User's Guide.
El
(
~:J
~
J
PR
ES
ET
8
b
.
r;;;;! c.
~
Md
.
~
Material Temperature and V.O.
L.
arc
now
automatically calculated and
updated
, so you
do
nOI
have
10
enter
any
information
with these
keys
.
Enter a presel
number
(constant) if you want
one
used. The value y
ou
enter
will
be added 10
Ihe
measured results and Ihe Iota I
will
be
di
splayed.
If
you
do
nOI
enter
a
number
"0" is automatically used here.
Determine
which
dire
c
tion
you want to be " p
os
itive" and usc this
button
10
make sure it happens.
Enter the
EXPansion COEFFicient for the material whose temperature you
are measuring. Enter
Ihe
value in pans-per-million-per-degree (
ppm
/
degree
).
For steel.
Ihe
expansion coefficient
is
11
.7
ppm
-per-degree
c.
You
should enter -
11.7
M
then
pr
ess
~
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