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HD46 series
HD46 series instruments consist of transmitters, indicators and regulators suitable for measuring
and controlling, depending on model, the following environmental parameters:
• Relative humidity (RH)
• Ambient temperature (T)
• Carbon dioxide (CO
• Dewpoint Temperature (Td, computed value)
They are wall-mounted and have built-in sensors. Instruments are factory calibrated and do not
require additional intervention from the user. Power supply: 24Vac or 15...35Vdc.
"Humidity" LED
HD46...R only
"POWER"
LED
Serial output with
mini-USB connector
INSTALLATION AND CONNECTION
HD46
)
2
"Temperature" LED
HD46...R only
HD46 17B...R only
Keyboard
HD46...DT... only
Fix the base to a wall,
with connectors at the
bottom
matching the connection
cable
with connections.
• "POWER" LED: it indicates the presence
of the power supply. In the models without
display, it blinks if an error occurs.
"CO
" LED
• CO
2
indicate the activation of the correspondent
relay. They blink if a measurement error
occurs.
• LCD display: it displays the value of all
the measured quantities.
• Keyboard: it allows the instrument setup
and the backlight activation.
• Serial output (mini-USB connector):
allows the connection of a PC for the
instrument
cable
LCD
(isolated) cable with built-in USB adaptor.
With the RS45 cable, the instrument is
HD46...D... only
powered directly by the USB port of the PC.
Attention: do not use a standard mini-USB
to USB adapting cable.
and
the
slot
output.
Proceed
Replace the front panel
inserting the tabs in
their slots .
- 1 -
Quick guide – ENGLISH
, Humidity, Temperature LEDs: they
2
setup,
through
RS45
(not
isolated)
Open the housing by pushing the
upper and lower tabs, then pull
to remove the front panel.
it
the
custom
or
RS45I
Quick guide
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Summary of Contents for Delta OHM HD46 Series
- Page 1 HD46 series Quick guide – ENGLISH HD46 series instruments consist of transmitters, indicators and regulators suitable for measuring and controlling, depending on model, the following environmental parameters: • Relative humidity (RH) • Ambient temperature (T) • Carbon dioxide (CO • Dewpoint Temperature (Td, computed value) They are wall-mounted and have built-in sensors.
- Page 2 Install the instrument at about 1.5m height above the floor and at least 1m distance from the corners. Do not mount it near windows, outside doors, direct heat, air conditioning or within occupants’ breathing zone. CONNECTION DIAGRAMS OPERATING MODE Supply the instrument with the correct voltage. A wrong power supply may cause permanent damage to the instrument.
- Page 3 • Simplified mode: relays work with a single threshold, custom-settable; if the instrument is supplied with a keyboard, it exists a thresholds quick setting mode. • Complete mode: relays may work with one or two thresholds, the quick setting mode is disabled. The instrument is preset to the complete mode, with the following thresholds: Temperature Humidity...
- Page 4 DESCRIPTION relay mode in complete mode 00: always disabled FF: always enabled 01: active below B 02: active over A 03: active over A and below B 05: active below B with hysteresis 06: active over A with hysteresis 07: active over A and below B with hysteresis For activation in error condition see manual Temp.
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