4
8350-1 Temperature Transmitter
Temperature
27.9 ºC
ENTER
Signet Temperature
Transmitter
• During normal operation, ProcessPro displays the VIEW menu.
• When editing CALIBRATE or OPTIONS menus, ProcessPro returns to the VIEW menu if no activity occurs for
10 minutes.
• To select a VIEW display, press the
▲
or
▼
keys. The selections will scroll in a continuous loop.
• Changing the display selection does not interrupt system operations.
• No key code is necessary to change display selection.
• Output settings cannot be edited from the VIEW menu.
• Proportional Pulsing
The Open Collector output will generate a 100 mS pulse at the
rate de
fi
ned by settings in the CALIBRATE menu (see page 6).
In the example below:
• The output will be 0 pulses/min. at temperatures less than 5º.
• The output will be 50 pulses/min. at 7.5º.
• The output will be 100 pulses/min. at temperatures above 10º.
The starting point, endpoint and maximum pulse rate are
selectable in the menu.
Hysteresis
Time
Low Setpoint
Process
Relay energized
Relay de-energized
Hysteresis
Time
High Setpoint
Process
10
5
Open Collector Output Rate:
0 to 100 Pulses/min.
endpoint
Pulse rate
0 pulses
100 pulses
Starting point
View Menu
3.3 Open Collector Output
The Open Collector output can be used as a switch that responds
when the process value moves above or below a setpoint, or it
can be used to generate a pulsing signal with a rate proportional
to the process value. The output can be disabled when not in use.
• Low:
Output energizes when process variable is less than the setpoint.
The output de-energizes when the process variable moves above
the setpoint plus the hysteresis value.
• High:
Output energizes when process variable is greater than the
setpoint. The output de-energizes when the process variable
moves below the setpoint plus the hysteresis value.
Display
Description
Temperature:
27.9 °C
Monitor the temperature input from the sensor.
This is the permanent display.
The displays below are temporary. After 10 minutes the display returns to the permanent display.
Loop Output:
12.00 mA
Monitor the 4 to 20 mA Loop output.
Last CAL:
02-10-09
Monitor date for scheduled maintenance or date of last calibration.
(See description in Calibrate Menu.)
4. Menu
Functions
