GF Signet 8850 ProcessPro Conductivity-Resistivity Transmitter - Manual (Page 4)

4 8850-3 Conductivity/Resistivity Transmitter
Signet
Conductivity/Resistivity
Transmitter
ENTER
62.50 uS/cm
25.0 C
VIEW menu
• During normal operation, ProcessPro displays the VIEW menu.
• When editing the CALIBRATE or OPTIONS menus, ProcessPro will return to the VIEW menu if no activity
occurs for 10 minutes.
• To select a VIEW display, press the UP or DOWN arrow keys. The selections will scroll in a continuous loop.
• Changing the VIEW display does not interrupt system operations.
• No key code is necessary to change display selection.
• Output settings cannot be edited from the VIEW menu.
Hysteresis
Time
Low Setpoint
Process
Relay energized
Relay relaxed
Hysteresis
Time
High Setpoint
Process
View Menu
Display Description
10 5
Open Collector Output Rate:
0 to 100 Pulses/min.
endpoint
Pulse rate
0 pulses
100 pulses
Starting point
• Proportional Pulsing
The Open Collector output will generate a 100 mS pulse at the
rate defi ned by settings in the CALIBRATE menu.
In the example below:
• The output will be 0 pulses/min. when value is less than 5.
• The output will be 50 pulses/min. when value is 7.5.
• The output will be 100 when value is greater than 10.
The starting point, endpoint and maximum pulse rate are
select able in the CALIBRATE menu.
3.3 Open Collector Outputs
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 pulse at a rate proportional to the
process value.
• Low:
Output triggers when process variable is less than the setpoint.
The output will relax when the process variable moves above the
setpoint plus the hysteresis value.
• High:
Output triggers when process variable is greater than the
setpoint. The output will relax when the process variable moves
below the setpoint plus the hysteresis value.
123.45 μS/cm
67.89 ºC
Monitor the Conductivity and temperature values from the sensor.
This is the Permanent display.
Monitor the Loop Current output.
Monitor the Loop2 Current output.
Check the Last Calibration date.
The VIEW displays below are temporary. The permanent display will return after 10 minutes
Loop1 Output:
13.75 mA
Loop2 Output:
13.75 mA
Last CAL:
04-20-10