www.miinet.com
Moore Industries-International, Inc.
- 41 -
User’s Manual
238-760-00K
May 2019
Functional Safety Dual Input Smart HART® Temperature Transmitter
STZ
SECTION 4
Dual with Identical Sensors
The STZ can be configured for use with two identical sensors. Follow these steps:
1) Configure the sensor
a. Use the “Configure Input Types” method to select
SEN
1, and to use the same sensor for
SEN
2
b. Navigate to the Sensor 1 Configuration menu, and make any additional settings as needed
c. Repeat for Sensor 2
2) Specify Variable mapping – All variables can be mapped as PV, including RJC T. However
in most cases, BUI-2 or AVG will be used as the PV.
3) Configure the dual inputs - If units different than those used by
SEN1/SEN
2 are needed,
then scaling must be enabled here.
4) Configure the PV Range (PV URV and LRV).
5) Configure the AO’s Range, limits, and fail response.
Dual with Mixed Sensors
The STZ can be configured for use with two different sensors (for example, T/C and a RTD).
Follow these steps:
1) Configure the sensor
a. Use the “Configure Input Types” method to select
SEN
1, and select “Configure
Independently” for
SEN
2. Select the proper input mode/type for
SEN
2
b. Navigate to the Sensor 1 Configuration menu, and make any additional settings as needed
c. Repeat for Sensor 2
2) Specify Variable mapping – All variables can be mapped as PV, including RJC T. However
in most cases, BUI-2 or AVG will be used as the PV.
3) Configure the PV Range (PV URV and LRV).
4) Configure the AO’s Range, limits, and fail response.
Note:
While the STZ will accept a dual input sensor configuration the following limitations apply
only when using two input sensors:
STZ
[HP]
– 2-wire and/or 3-wire sensors. 4-wire sensors (RTDs) cannot be used.
STZ [DIN]
(see figure 3.2) - 2-wire and/or 3-wire sensors. 4-wire sensors (RTDs) cannot
be used.
STZ [HPP]
(see figure 3.4) – Sensor 1 can be configured as 2-wire or 3-wire sensor.
Sensor 2 is then restricted to a 2-wire sensor.