DRAFT
MTSE
IO&M Manual
25
Paragon Controls Inc,
Rev J 2/3/2021
The Sensor Data Page can be useful for some basic troubleshooting of the MTSE
1)
A negative pressure reading indicates reversed tubing to a sensor (other than a very small
negative pressure value from possible zero drift); swap the low and high signal tubing for
that sensor number.
2)
S_Err in the Pressure column indicates a “sensor acknowledge error” from an unresponsive
sensor. This could be either a faulty sensor or sensor quantities were incorrectly assigned
during factory setup; for example, if there are only 6 sensors in the MTSE however the unit is
setup such that the total quantity entered for all systems and OA is 7 sensors, there is no 7
th
sensor available and therefore an error would be reported for the missing (unresponsive) 7
th
sensor during acknowledgment. Contact the Factory.
3)
If flow and pressure are being displayed on Sensor Data page but there is no system flow
displayed on Normal Active Display, the MTSE is in lockdown for that system; reduce the
lockdown percent as described in Section 4.2.7.
4)
If a single fan in a system array is reading near zero or very different from other fans in the
same system this indicates either a fan failure or a problem with the pneumatics, i.e., closed
fan backdraft damper, kinked or blocked signal tubing, etc.
5)
Verification of either flow or no flow (if air handling unit is off) can be confirmed for
individual sensors during building commissioning, if required.
Zero Calibration
Allows user to perform a zero calibration to eliminate any possible transducer zero drift. This value will
be placed in a different memory location then the factory zero memory location. The device will only
accept the calibration if the new value is within ±20% of the original factory calibration value. If not, an
error message would appear stating the value was not accepted as shown below. Zero calibration is not
to be confused with AutoZero; Zero calibration requires that pneumatic tubing be disconnected from the
sensors and can be performed on any single sensor or on all sensors in a system. (AutoZero is
automatically performed when ordered as described below in Section 4.3.5.)
It is imperative that pneumatic tubing to the sensors is disconnected before Zero calibration can be
performed. The user can either select a single sensor, or a whole system to be zeroed by toggling the
“Zero Single Sensor” button. When in “Zero Single Sensor” mode, pressing “Sensor: 1” button will
toggle through the available sensors or will toggle through systems if set to Zero System. Pressing
“-Enter-” begins calibration for the given sensor or system selection.
