Instructions

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3. PROBES AND MEASUREMENTS
The instrument works with probes of the LP471… series: these are photometric and radiometric
probes that measure:
illuminance (LP471 PHOT),
irradiance (LP471 RAD, LP471 UVA, LP471 UVB and LP471 UVC),
PAR (LP471 PAR),
luminance (LP471 LUM 2),
effective irradiance according to the UV action curve (LP471 ERY),
effective irradiance in the spectral range of blue light (LP 471 BLUE),
illuminance, UVA irradiance and UVA irradiance - illuminance ratio (Combined probe LP
471 P-A - please see note 1),
total effective irradiance UVA + UV-CB according to the UV weighting curve (combined
probe LP 471 A-UVeff for measuring total effective irradiance in the range 250...400 nm -
please see note 1),
global solar irradiance in the spectral range 400…1100 nm with silicon photodiode (LP 471
SILICON PYRA),
global solar irradiance in the spectral range 300…3000 nm. Probe consisting of a second class
pyranometer LP PYRA 03 and a 5 m long cable with SICRAM module (LP 471 PYRA 03),
global solar irradiance in the spectral range 300…3000 nm. Probe consisting of a first class
pyranometer LP PYRA 02 and a 5 m long cable with SICRAM module (LP 471 PYRA 02).
Note 1: probes LP 471 P-A and LP 471 A-UVeff work with instruments HD2302.0 having firmware
version “HD2302.01” and following. On the back of these instruments a label shows version and
date of the firmware. To update previous instruments, contact your dealer Delta Ohm.
All probes, except LUM 2, are provided with a diffuser for cosine correction.
Upon turning on the instrument automatically detects the probe connected to the input: it is suffi-
cient to connect it before turning the instrument on.
The unit of measurement is determined according to the probe connected to the input: use the
UNIT key to change the unit of measurement.
In the combined probes, UNIT key allows to select one of the available measures (in these probes,
unit of measurement cannot be changed).
All probes are calibrated in the factory; no calibration is required by the user.
The probe is detected during turn on: if a probe is connected and the instrument is on, it is
necessary to turn it off and on.