www.miinet.com
Moore Industries-International, Inc.
- 12 -
User’s Manual
238-760-00K
May 2019
Functional Safety Dual Input Smart HART® Temperature Transmitter
STZ
SECTION 1
Sensor Diagnostics
As part of the enhanced device intelligence, the STZ performs Total Sensor Diagnostics. This
can save you downtime by letting you know when a problem occurs, what type and it’s location.
Some of these diagnostics such as drift alert and corrosion detection can also be used for
predictive diagnostics to warn of future problems. This allows for planned sensor replacement
and minimal process interruption.
Range Alarms
The STZ implements 4 independently configurable Range Alarms. Typical applications are
outside of range detection, in range detection and sensor drift.
Range Alarms (RA) can be used to detect if a Device Variable is inside or outside of an arbitrary
user specified range. Any Device Variable can be used as the source, including the RJC
Temperature, Loop Current, and Percent of Range (POR). The alarm can be set to a warning
(set a HART status bit) or an alarm (sets a different status bit, plus AO fail response). It can also
be configured as latching or non latching.
Note:
If a Range Alarm Response is set to Alarm, the AO will always perform a fail response
even if the source Device Variable is not assigned to the PV. Setting the Range Alarm
Response to Warning will not affect the AO.
Process Input Signal
High Limit
Low Limit
0 -
100 -
In Range
