-
!
a
Series
DewPibe
DeW
PoiDI
Bonnnelels
1.5.6 Isolated 4-20 ma
Output
The4-20
maoption
i
s
available for
applications
requiring .
complete isolation between the
Model200
0
Series
and
the 4-20 rna output. As with the standard 4-20
rna
output, the range matches the 0-5 V output set on
the
Model2000
Series. Maximum loop resistance is
1000
ohms.
1.5.7
In-Line
Filter
An in-line filter can be added to the
sampling
system in
orderto
provide
additional
protection to the chilled
mirror
and associated
optics.The
filter assembly is a
combina-
tion particulate and
coalescin
g
filter rated for 250
psi.
The filter head assembly is anodized
aluminum.
Filter
efficiency is rated at 99.99% for particulate and
droplet
sizes ofO.l micron and
greater.
1.7
SPECIFICATIONS
The following
specifications
refer to the
Model2000
Series.Those specifications
that apply to the
Model2002
only
are
highlighted
by
an
(*).
Dew/Frost Point
Range
-40 to +100°C (-40 to
2l2°F)- Sl,
Ds1
Sensor
-50 to +100°C (-50 to
212°F)-
S2, Ds2
Sensor
-75
to+100°C
(-103 to
212°F)-
S3
Sensor
Accuracy
Dew
Point/Frost
::1::0.2°C
(±0.36°F)
Ambient
Temperature*
::1::0.2°C
(::1::0.36°F)
Relative Humidity*
:::1::0.5%
RH,
nominal
Dew/Frost Point
Temperature Sensor
3-wire Platinum Resistance
Thennometer
(PRT), 100 ohms at 0°C,
nominal
Depression
45°C
(81°f),
nominal-
S1, Ds1
Sensor
65°C (
ll7°F), nominal-
S2, Ds2
Sensor
95°C
(171°f), nominal-
S3
Sensor
Relative
Humidity Range
5 to 100%,
no
m inal-S1, Ds1
Sensor
1 to 100%,
nominal-52
,
Ds2
Sensor
<I%
to 100%,
nominal-53,
Sensor
Ambient Temperature Range*
-50°C to 130°C (-58°F to
266°f)
Auxiliary Coolant
Water (or
other)-2liters/minute
(0.5
gallon/
minute) at 100 psig maximum, to
augment
depression capability of Sensor
when
necessary
S1
Sensor-
Coolant port
standard
S2
Sensor-
Coolant port
standard
S3
Sensor-
Coolant port
standard
Sensor Material
Rhodium or Nickel Chromium
mirror,glass,
epoxy,isofoam insulation, anodized aluminum
sensor
body.
Remote
Sensors
Up to 75 meters (250
feet)
Depression
Slew
Rate
1.7°C
(3°F)/second
max., above
0°C
Repeatability
±0.01
oc
(0.2°F)
Hysteresis
None
Sample Flow
Rate
0.25-2.5
liters/minute
(0.5-5.0
SCfH)
Sample
Pressure
0-21
kglcm:t
(0-300
psia
)-
S1, S2,
S3
0-63 kg/cm
2
(0-900
psia)-
SIP,
S2P
Operating
Temperature
0 to +50°C (+32
to+122°f)-
Control Unit
-50 to +70°C (-58 to
+158°f)
Sl
Sensor
-50
to+
I
oooc
(-58 to +2
I
2°F) 52
Sensor
-75 to +75°C (-103 to
+167°F)-
S3
Sensor
1-5
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