Menu Functions; View Menu - Signet 8350-1 Manual

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.
Process
Hysteresis
Low Setpoint
Relay energized
Relay de-energized
Process
High Setpoint
Hysteresis

4. Menu Functions

• 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.

View Menu

The displays below are temporary. After 10 minutes the display returns to the permanent display.
4
Time
Time
Display
Monitor the temperature input from the sensor.
Temperature:
27.9 °C
This is the permanent display.
Loop Output:
Monitor the 4 to 20 mA Loop output.
12.00 mA
Monitor date for scheduled maintenance or date of last calibration.
Last CAL:
02-10-09
(See description in Calibrate Menu.)
• Proportional Pulsing
The Open Collector output will generate a 100 mS pulse at the
rate defi 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.
0 pulses
5
Starting point
Description
100 pulses
10
endpoint
Temperature
27.9 ºC
Signet Temperature
Transmitter
ENTER
8350-1 Temperature Transmitter