Opti Filter; Leakage; Signal - Ecom ECD2800 User Manual

air-conditioned laboratories the best solution (default value is 40 °C). Recommended setting for
surrounding temperature under 25 °C is 36 °C, and 40 °C for surrounding temperature over 25°C.
Best method to find suitable temperature is to set constant voltage to default value (8 V) and add
2°C to measured temperature after stabilization. Great influence on illuminator temperature has
turned on/off halogen light.

6.2.6. Opti Filter

Optical filters are placed at the front of monochromator before diffraction grating. They are
used to suppress second order on the grating, where for example when setting wavelength 400 nm
grating generates second order of wavelength 200 nm. This wavelength is in automatic mode
filtered by white cut-of filter, which absorbs all wavelengths lower than 340 nm.
Setting
AUTOMATIC
NONE
WHITE
YELLOW
Standardly is set automatic mode. Others are used only during diagnostics.

6.2.7. Leakage

Leakage sensor contains reference and measuring sensor. If the measuring sensor is
immersed in liquid, sensor generates a signal. Signal processing is depending on actual setting.
Setting
OFF
AS WARNING
AS ERROR
For termination of leakage signalization, it is necessary to remove the source of liquid leak

6.2.8. Signal

6.2.8.1. Negative Dynamic Range
Setting negative dynamic range influences range of absorbance measuring.
Setting
NORMAL
HIGHER
S
ETTING OF OPTICAL FILTERS
Description
Setting without filter is used for wavelengths under 360 nm,
white filter (WHITE) is used for wavelengths in range of
361-580 nm. Yellow filter (YELLOW) is used for wavelengths
over 581 nm. At this setting is not inserted any filter for test
scans. Recommended and default setting.
None filter is inserted. All light goes through.
White filter is inserted. It absorbs wavelengths under 300 nm.
Yellow filter is inserted. It absorbs wavelengths under
480 nm.
S
ETTING OF LEAKAGE SENSOR BEHAVIOR
Behavior
Signal is ignored.
Warning is displayed. Default setting.
Invokes fatal error, when light sources turn off and unit goes to initial idle
state.
S
ETTING OF NEGATIVE DYNAMIC RANGE
Description
<−0.2; 4.0> AU. Default value.
<−0.8; 3.0> AU.
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ECD2800 / ECD2600