Campbell Scientific Vaisala and HMP35D Vaisala HMP35A and HMP35D Operating Operating Manual

Operating
Manuel
instructions
d'utilisation
Bedienungsanleitung
Kaytt6ohje
HMP 35A & HMP 350
Humidity and
temperature probes
Sondes de mesure de
temperature et d'humidite
Mel"Ssonden fur Feuchte
und Temperatur
Kosteus- ja lamp6tila-
mittapaat
Doc. no. HMP35A-OO217-2.1
~+} VftlSftLft
SENSORSYSTEMS
Weak
more often, depending on the conditions of use and
desired accuracy. A one-point calibration may be performed for the probes during actual measurement
by
adjusting the trimmer potentiometer
marked "DRY" in
the probe shaft. The field calibration can be performed
against a calibrated Vaisala humidity meter. For a highaccuracy two-point calibration use a Vaisala HMK 11
calibrator and saturated salt solutions as described in
the HMK 11 Operating Manual. The calibration is first
done for the dry end and then for the wet end by
adjusting trimmer potentiometers
marked "DRY" and
"WET". The potentiometers
are located under a protective plug in the probe handle, see Figure 3. (Note: the
minimum output signal of 0.002 V corresponds to a
relative humidity
Replacing
of 0.2 %RH.)
the H-sensor
Detach the damaged sensor and replace it with a new
one. Handle the sensor with care. Calibrate the probe,
preferably using two-point calibration, before taking it
into use.
Chemical tolerances
of the H-sensor
Long-term exposure of the sensor to certain chemicals
and gases may shorten sensor life and change its
properties. The following list give suggested maximum
ambient concentrations
for some typical chemicals:
1.
Organic
solvents
2
Aggressive chemicals
(e.g. strong acids such
as S02' H2SO4' H2S,
HCI, C12, etc.)
acids
3,
4.
Bases
1000...10000
ppm (typ.)
1...10 ppm (typ.)
100...1000 ppm (typ.)
10000...100000
ppm (typ.
Detailed information
on allowed concentrations
is
available on request from your Vaisala representative.
2
4.
HMK
5.
HMP
00
SPARE PARTS AND ACCESSORIES
11 calibrator
Radiation shield
HMP 35A
HUMICAP@ H-sensor
Temperature sensor Pt 100
(1/3 DIN 43760B)
Membrane filter
Sintered filter 37 ~m
Sintered filter 216 ~m
Plastic grid
0062
10429
2787
6685
6686
6597
HMP 35D
HUMICAP@ H-sensor
Temperature sensor Pt 100
(1/3 DIN 437608)
Membrane filter, chromium-plated
Sintered filter 37 ~m
Sintered filter 216 ~m
0062
10429
16126
6685
6686
TECHNICAL SPECIFICATIONS
35A & HMP 35D
Measurement
range
Output signal range
0 ...100
0.002
...1
%RH
VDC
(equals 0.2 ...1
Accuracy
% RH)
at +20 °C
(including nonlinearity
and hysteresis)
.against
factory
:t
%RH
:t2
%RH
(0 .,
90 %RH)
:t3
%RH
(90
.100%RH)
references
.against
field references
3
Temperature dependence
Typical long-term stability
Response time
(at 20 °C, 90 % response)
Settling time
Sensor
Temperature sensor
Supply voltage
Current consumption
Operating temperature
Protection class
Weight
Accessories
:to.04 %RH/oC
better than 1 % RH per year
15 s with membrane filter
1 s
HUMICAP@ H-sensor
(part no. 0062)
Pt 100 (1/3 DIN 43760B,
four-wire connection)
7...35VDC
$:4 mA
-40 ...+60 °C
IP 55 (NEMA 3S)
IP 65 (NEMA 4) *
180g
radiation shield
HMP 35A
Sensor protection
.standard
.optional
Housing material
Cable length
membrane filter
(part no. 2787)
plastic grid (part no. 6597)
sintered filter 37 ~m
(part no. 6685)
sintered filter 216 ~m
(part no. 6686)
ASS plastic
1600 mm
HMP 35D
E.M.I. protection
Sensor protection
.standard
IEC 801-3 standard,
membrane
filter,
chromium-plated
2787)
level 2
(part no.
Sensor protection
.optional
sintered
(part no.
sintered
(part no.
Housing material
chromium-plated
plastic
3500 mm
Cable length
(* For details,
Information
filter 37 ~m
6685)
fi1ter 216 ~m
6686)
ASS
consult your Vaisala representative.
and specifications
in this manual subject to
change withough prior notice.
Copyright Vaisala Oy, 1991.
HUMICAP@
is a registered
trademark
of Vaisala.
5
HMP
35A
Fig. 3
Fig. 3
Bild 3
Kuva 3
Electrical connections
Connexions electriques
Elektrische Anschlu~e
Sahk6iset liitannat
r
Fig. 1
Fig. 1
Bild 1
Kuva 1
Dimensions, H M P 35A & H M P 35D
Dimensions, H M P 35A & H M P 35D
Mar5e, HMP 35A & HMP 35D
Mitat, HMP 35A & HMP 35D
Cable length
Longueur du cable
Lange des Kabels
Kaapelin pituus
HMP 35A
1600 mm
HMP 350
3500 mm
,~
HMP 35D
Fig. 4
Fig. 4
Bild 4
Kuva 4
Electrical connections
Connexions electriques
Elektrische AnschlOBe
Sahk6iset liitannat
-(,
"'-'~~~"~""~.'
-
SHIELC