Nortec MH Series - Manual (Page 45)

Start Up | 42
Modulating Control
The modulating controls use a PI control algorithm to transmit a 0-10V control signal to the
humidifier. Adjust the setpoint to the desired setting by using the up/down arrow buttons on
the controller.
On/Off Control
The On/Off controls use a PI control algorithm to open and close a relay that opens and closes
the humidifier’s On/Off loop. Adjust the setpoint to the desired setting by using the up/down
arrow buttons on the controller.
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 MHTC’s display and keypad.
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 73 .
Figure 41: Transducer Control Operation
Nortec LINKS XPS (MHTC Only)
Nortec LINKS XPS is an option that can be integrated with the MHTC. It allows a Building
Management System to monitor and / or control the MHTC. For complete information about
Nortec LINKS XPS and its operation and configuration, go to www.humidity.com and look up the
Nortec LINKS XPS manual.
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.