Nortec NH-EL Series - Manual (Page 47)

Start Up | 44
Transducer Control
The transducer controls transmit a 2-10V control signal proportional to the sensed relative
humidity to the humidifier. Humidity setpoint is not set at the transducer. The setpoint is set on
the NH-EL’s display.
Note: It is possible to field calibrate NORTEC Digital controls if the displayed humidity is found
to be different than a known trusted source. See Digital Humidistat on page 74 of
chapter on Troubleshooting.
Figure 39: Transducer Control Operation
Multi Unit Operation
Start up of each humidifier configured and installed for multi mode operation is the same as
starting up standalone humidifiers with the exception that for the humidifier to fill and produce
steam the demand to the master unit must be greater than the Zero Out setting of the unit
being started. (Example for a slave unit configured to operate between 20 and 30% the demand
to the master must be greater than 22.7%).
Each unit connected in a multi mode system will display its demand as a percentage of the
range for which it is configured. Example, a slave unit configured to operate between 20 and
30% demand will display a demand of 50% when demand to the master is 25%.
Note: See Multi on page 57 for software configuration, and Multi Mode Wiring on page 34 for
wiring of humidifiers in a multi mode system.
Humidity (RH %)
Option button accesses
sensor calibration.
See troubleshooting
Adjust calibration
while in calibration
mode
Power button will
display “NO” if an
attempt is made to
turn off the transducer.
Note: It is possible to field calibrate NORTEC Digital controls if the displayed humidity is found to be
different than a known trusted source. See Digital Humidistat on page 74 of chapter on
Troubleshooting.
Note: See Multi on page 57 for software configuration, and Multi Mode Wiring on page 34 for wiring of
humidifiers in a multi mode system.