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"POWER" LED
Indicates power supply state. In models without display, it flashes if a fault
occurs.
LCD Display
It simultaneously displays all values measured by the instrument.
LED level indicators
They show air quality level. In HD45 BVR and HD45 BAR models only.
"Humidity" LED
It indicates when the set humidity threshold limits are exceeded and the
humidity relay is activated. It flashes if an error condition occurs in the
humidity measurement.
"Temperature" LED
It shows when the set temperature threshold limits are exceeded and the
temperature relay is activated. It flashes if an error condition occurs in the
temperature measurement.
"CO
" LED
2
It shows when the set CO
activated. It flashes if an error condition occurs in the CO
Keyboard
It allows setting of instrument setup parameters and display backlight
activation.
MENU key
Accesses setup menu. Confirms set value.
ESC key
Exits parameter setting mode. Deletes not confirmed changes.
ARROW UP key
Scrolls through parameter list
ARROW DOWN key
Scrolls through parameter list
Serial output with mini-USB connector.
Included in all models, it allows connection to a PC for instrument
configuration. Connection is obtained via the RS45 (not isolated) or RS45I
(isolated) special cable, which has a mini-USB connector for the instrument
and a USB connector for a PC. With the RS45 cable, the instrument is directly
powered through a PC's USB port (at least a 500 mA USB port is required). The
special cable has a built-in USB adaptor.
Attention: the instrument must not be directly connected to your PC by means
of a standard mini-USB/USB adaptor cable, but with a RS45 or RS45I cable
only.
threshold limits are exceeded and the CO
2
Increments selected parameter value.
.
Decrements selected parameter value.
.
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relay is
2
measurement.
2
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