
Digital Temperature, Humidity, Dew Point Monitor
Operation Manual

Specifications
Range:
Temf)erature-
-22
to
+ 1 22°F, (-30
Humidity-
a
Dew
-22
to 950fo
Point-
RH
to
+ 1 22°F, (-30
Resolution:
1
Ofo
RH,
1 o
Accuracy:
Temperature-
Humidity-
±20fo
RR
tram
Humidity
from 0 to 60%,
61
to
950fo
Sensor:
Thin firm capacitor
Dew
Point
±3.6°F
Accuracy:
(±2°C)
Instrument
Min/Max
ton
Ba
Touche
Taste
Hold
Baton
Touche
Taste
to
+50°C)
(non-condensing)
to
+50°C)
± 1.8°F
(±
1.0°
at+73
±30fo
°F
Anatomy
Wand
Sanda
---+!HI
Em
bout
Lesekopf
Key
de
min./m
ax
Min/M
ax
Min
/Max
Key
de
hold
Hold
retenc
--l§~~~~~
ion
C)
RH
Temperature
Tnermistor
Sample
Average
Ambient
Power
Rate:
Approx
5 seconds
scale in air
. 1
Response
Operating
+32
to+
to
0
One
T22°F (Ol:o +50°C)
900fo
Supply:
9V
alkaline battery.
per second
RH
Battery life approx.
Dimensions:
(
160mm x 65mm
Probe
Dimensions:
.92"
diameter
(149mm)
long
cord
Weight:
I I oz.
Baton
•c;•F Key
Baton
Touche
Taste
Baton
de
•c;•F
Sensor:
move
Time:
600fo
of full
I 5'/seco
to
moving
Conditions:
(non-
cond
ensing)
80nours.
6.25" x 2.5" x 1.9"
x 45mm)
(23mmj
on
(.31
de encendid
Rh/Dew Pt.
humed
Touche
Taste
de
•c;
•c;•F
. 5.9"
a 6 (18 m)
kg)
r1!
y
T
au h n/
Ein-/
Au
Key
ad relat
ivdlpu
Rh
/Dew
Rh/D
ew
•F
c~p. rqc~do
nd
If
K •y
ff
nto cle rocio
Operating
I.
On/Off
Press
2.
Set
Celsius
Press
or
Fahrenheit.
Set
3.
4. Set
Humidity
Press
Note:
Wand
Slide
wand
cradle. Avoid breathing
Instructions
to
turn
unit
or
"°CfOF" key
"Rh/Dew"
Dew
Points
Position
upward
on
or
off.
Fahrenheit
to
choose Celsius
or
Dew
key
to
choose
below
to
first
on
readings.
5.
Update
Karet moves
takes a
Indicator
up
new
reading,
or
down
approximat
second.
6.
Hold
Press
this key
"Hold
" symbol in the display w i
indicating
that
to
lock
the
in
current
instrument
mode. To resume reading, press
key again.
Ciil!i]
lB
22rh
Mode
Point
Mode
Humidity
freezing should
•
notch
or
remove
or
touching
each time
the
ely once every
reading. The
ll
light
up,
is
in the "Hold"
the
"Hold"
OF •
or
Dew
be
converted
wand
wand
unit
Point.
,
,oF
• •
2YdP
completely
end
as
this
to
frost points.
•
from
could
distort
Battery Compa
Compartimiento
Compartiment
Batteriefach
de
rtment
Ia
pila
a'
pile
_j
a
Strain
Reli
tension
Alivio de
Soulagement de Traction
Zugentlastun
5' Long Cord
Cordon
Gordon
de
Spira/schnur, I ' 4 c
de 154 c
1 54 em
(I
5
~
"' ('•
dl'
ef
g
Ill!
'
'""
!J
r"
a

Operating
7.
Automatic
automat
no
keys
8.
Automatic
You
may override the automatic shutoff
ture at startup by pressing
key.
and
'
T'
letter
that the s
9.
Minimum/Maximum
Press
"Min/Max" once
ues
will be displayed for approximately 7
onds.
Press
"Mi
the
r:naximum
seconds.
Press
"Min/Max" a third time
od
and
tion.
Unit
will
after 7 seconds
Note:
and
Turning the
maximum values.
Instructions,
Shutoff
ically shut
are pressed.
the "On"
will
hutoff
n/Ma
the
always return
down
Shutoff
key
light
up
timer
x" again
values will be displayed for 7
unit
will return
if
no
unit
Ctd.
This
instrument will
after
""
34 minutes
Override
fea
-
down
the
"Hold"
at
the
same time. The
in the display, indicating
is
in the override
T
and
the
minimum
during
to
keys
off
this time
during
to
normal opera
normal operation
are pressed.
resets
the
mode
val-
sec
and
this peri-
minimum
if
Battery
Battery should be replaced
after
low
accuracy
.
Installation
as
soon
as
possible
battery indication to maintain rated
of
unit
Calibration
Minimum
Maximum
Display
Display
Your instrument was carefully tested
and
calibrated before being
shipped from the factory.
Additional calibration
required. However. should calibration be desired in the future.
these procedures:
1 . Identify a standard th at
accurate than this
supplied calibrati
tronic instruments recently cali-
at
brated
ommended. Sling psychronmeters
mechanical sensing elements
(human hair.
elements. etc.) are NOT
recommended. These instruments can be subject to great
inaccuracies
mechanical measurement .
2.
Place
the calibration salt capsule
into
chamber
stabilization. For best results.
calibrate the
ly monitored
a certified lab are rec-
and
instruments using
the probe
a controlled environmental
and
is
not
unit
on
salts
wood
due
to the nature of
of
the
allow
for complete
unit
at
levels typical-
during
normal
follow
is
more
Factory
or
unit
into
or
elec-
operation. Calibration in
open
room
without
sule
or
a chamber
mended
humidity
a very small area.
3.
To activate
turn the
"
On/Off'
the same time. A small "J" will
appear in
you
as
temperature
can vary greatly
the
unit
off
key
and
the
are in the calibration mode.
Step
3:
Mode
Activating
the salt cap-
is
not
calibration mode.
.
Now
press
the "C/F" key
display
to
Calibration
an
recomand
within
the
at
indicate
a
a

Calibration,
4.
To
lower
point
reading, press the
the
Ctd.
humidity
or
"RH/Dew" key. To raise the
humidity
press
5.
To
ing, press
or
dew
the "Min/Max"
lower
the temperature read-
the
"Hold" key. To
point
key.
reading,
raise the temperature reading,
press
the "0C/°F" key.
6.
When
calibration
turn
simply
the calibration
the
is
unit
mode
complete,
off
.
to
dew
exit
Notes:
I 0
greater
either a need for factory seNice
the standard being used
digit
This
procedure allows for a
change
change
in readings. If
is
required, there
is
inaccu-
or
rate.
For most accurate full scale calibra-
tion, factory
seNice
is
recommend-
ed.
is
Troubleshooting
Problem
Inaccu rate Reading
won't
Display
"E" appears in display
Display fad
"Err" appears
LO
BAT
Probe exposed
95%
change.
ing
symbol appears
RH
for exte
to
environments exceed
nded
period
ing
Solution
Allow
indicator to stabilize.
power
battery
Check
Incorr
ect
reference
Out
of calibrat
manual fo r calibration procedure.
Check
Unit
in "HOLD"
locked
up
re-insta
(Turn indicator
ll
battery &
Component
Weak battery. Cha
Bad cord co
Pull
rubb
er boots
for proper
Check to see that environme
within
manu
Repla
Probe sho
ambient condition
on
connections.
ope
rating range
al
p.2-
ce battery
uld
temperature.
ILO
being use
ion.
mode
(pre
turn
ON)
failure. Contact factory.
nge
battery.
nn
ection
or out
off wand
amb
be dried
of
ient
operating
out
s-
Time required varies
RH
& air fl
BAT)
.
d.
ss
HOLD again)
OFF,
remove battery,
of range.
and unit. check
nt
measured is
unit---<:heck
conditions.
und
er normal
ow
or
is
T
emper
ature
Down
Keypad
Functions
in
Calibration
a
Mode
Temperature
Up
Parts
List
Some parts are easily replaced
Description
Accessories
Calibration
NIST
NIST Traceable
*Must be requested
Kit
(11
% and
Traceable Certificat
Ce
rtificate, ULTIMA*
when
ordering.
75%1
e,
3- oint*
add
one weeK to delivery time.
on
site.
a
Please
refer to table
below
Part#
AB34
N3TH5
N4TH5
.

Factory
We
recommend
instruments be returned
factory
returning
package,
Return
(RAJ
The
Dickson warrants
will be free
and
workmanship
twelve
event
ty,
the
returned
replacement (shipping prepaid)
with
a Return Authorization
Number
Returns
be repaired
option
Service
that
for
complete
any
instrument
please
Authorization
Number.
Dickson
from
defects in material
months
of
product
information
without
after delivery. In
a claim
to
(See
under
or
the
factory
"Factory Service &
or
replaced at Dickson's
charge.
and
damaged
to
repair. Before
or
call
for
a
Warranty
that
the
TH550
for
a period
this
warran-
part
must
for
repair
above). It
Returns
our
be
of
the
will
When
following
I . P.O.
2.
3.
4.
The
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of
expressed
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quential
or
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are excluded
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calling, please have the
information
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Serial
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Model
The
problem
experiencing
foregoing
are exclusive
all
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or
from
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products. Products
for
out-of-
units.
of
unit.
number
warranties either
or
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of
you're
with
warranty
implied.
not
be
failure
by
Dickson
from
this
available:
unit.
unit.
and
and
in lieu
liable for conse-
or
malfunction
not
Especificaciones
lntervalos:
•
Temperatura-
-300C a
•
Humedad-
densaci6n)
•
Punto
-300C a
•
Resolucion:
I
• Precision
±1°(
• Precision
2%
to
• Precision
2°(
•
Detector
tipo
•
Detector
termistor
•
Muestras:
50°(.
de
50°(.
o/o
de
humedad
(±1,8°F)
from 0 to
95%
RH
(3,6°F)
capacitancia
0 al
rocio-
de
de
23°(
del
de
de
aproximadamente I
(-22°F a I22°F)
95%
(sin
con
(-22°F a I22°F)
relativa, I o
laTemperatura:
Ia
Humedad:
60%,
±3%
from
(73°F)
Punto
humedad:
temperatura:
de
rocio:
61
par
segundo
•
Fuente
pila alcalina
duraci6n
80
•
lntervalo
ambiental
ooc
Oa
•
Tamano:
•
Probe
92" diameter (23mm),
( 149mm)
cord
• Peso: 0,31
de
de
horas.
de
a
50°C
90%
HR
I 59 x I 59 x
Dimensions:
long
Kg
alimentacion:
de
Ia
operacion
(cuerpoJ:
{32°F a I22°F)
9 voltios.
pila
es
de
48
on
a 6' ( 183cm)
5,
La
unas
mm
9"
una
E
s
p
A
..
N
Dickson manufactures a complete line
& pressure instruments . Send
Toll
930 South
Telephone
or
call
for
Free
1-800-323-2448
DICKSON
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Westwood
Avenue • Addison.
630-543-3747•
MAN02
Revised
II
of
temperature, humidity, air quality
a free catalog
In
Recorders
Fax
630-543-0498
12/96
IL
60 I 0 I
of
Dickson products.
0
L
II