Delta OHM HD2302.0, Руководство пользователя, Страница: 10 / 32

- - 10
3.1 C
OMBINED PROBE
LP 471 P-A
LP 471 P-A is a two sensors combined probe with SICRAM module for measuring illuminance
(lux) with standard photopic spectral response and irradiance (μW/cm
2
) in UVA spectral range
(315...400 nm, with peak at 365 nm). Moreover probe provides the ratio of UVA irradiance and il-
luminance in µW/lumen (quantity of interest in the museums field).
Both sensors are equipped with diffuser for the correction according to the cosine law.
At switching on, the instrument displays alternatively the measures of the two sensors. Pressing any
key (excluded ON/OFF key), automatic commutation is turned off. To reactivate it, press HOLD
and REL keys together.
To select the measure to display, press UNIT key.
3.2 C
OMBINED PROBE
LP 471 A-UV
EFF
LP 471 A-UVeff is a two sensors combined probe with SICRAM module for measuring total ef-
fective irradiance according to the UV weighting curve. Two sensors are used to correctly measure
the total effective irradiance in the range 250...400 nm.
Both sensors are equipped with diffuser for the correction according to the cosine law. The probe
provides the total effective irradiance (“Er”
at display), the effective irradiance in the range UV-CB
(“BC” at display) and the UVA irradiance (“A” at display).
At switching on, the instrument displays alternatively the measures of the two sensors. Pressing any
key (excluded ON/OFF key), automatic commutation is turned off. To reactivate it, press HOLD
and REL keys together.
To select the measure to display, press UNIT key.
3.3 P
ROBES
LP 471 PYRA 02
AND
LP 471 PYRA 03
LP 471 PYRA 02 and LP 471 PYRA 03 probes measure the global solar radiation in the spectral
range 300…3000 nm. They are composed of a first class (LP PYRA 02) or a second class (LP
PYRA 03) pyranometer and a cable with SICRAM module.
Since calibration data of pyranometer are saved in SICRAM module, the cable cannot be used to-
gether with other pyranometers.
The
global solar radiation is expressed in W/m
2
or in μW/cm
2
. Measuring range is 0…2000 W/m
2
.
The module is equipped with a 5 m or 10 m long cable ending with a 4 poles male connector to be
inserted in the female connector of the pyranometer.
No user calibration is required.
The SICRAM module is recognized at the instrument switching on, then it’s absolutely necessary to
connect the module before turning the instrument on .
3.4 P
ROBE
LP 471 SILICON-PYRA
LP 471 Silicon-PYRA measures the global solar radiation using a silicon photodiode in the spec-
tral range 400…1100 nm.
The diffuser allows a correction according to the cosine law.
The probe is suitable for the measurement of natural sunlight. Under overcast skies, or for reflected
light measurements the use of a thermopile pyranometer is recommended (LP 471 PYRA 03 or LP
471 PYRA 02).