Hach sc200 4-20 User Manual

Operation
Configure a 4-20 mA input module
An analog module must be installed in the controller.
1. Determine what output the the connected device is using (0-20 mA or
4-20 mA). This information will be used to set the scale.
2. Determine what the 20 mA value is equal to (e.g, 100 psi).
3. Determine what the low end (0 or 4 mA) value is equal to (e.g., 10 psi).
This information will be used to set the display range.
4. From the Settings Menu, select Sensor Setup.
5. Select Configure.
6. Update the options.
a. Highlight an option and push ENTER.
b. Make a selection or update the entries.
c. Push ENTER to save the changes.
Option Description
Edit name Edits the module name
Edit units Edits the measurement units
Edit parameter Edits the parameter name
Display range
For the 0-20 mA scale:
• Set the 20 mA value
• Set the 0 mA value
For the 4-20 mA scale:
• Set the 20 mA value
• Set the 4 mA value
Sets the values used for the selected
scale (0-20 mA or 4-20 mA)
Option Description
Signal average Sets how often signals are averaged.
Higher values produce a smoother
signal but increase the time it takes
for a signal to respond to a change in
the process value.
Set resolution—
X.XXX, XX.XX, XXX.X, XXXX
Sets the number of decimal places
used in the display.
Select scale—
4-20 mA or 0-20 mA
Sets scale used for the 4-20 mA input
Data log interval—5 sec, 30 sec, 1
min, 2 min, 5 min, 10 min, 15 min, 30
min, 60 min
Sets how often data is logged to the
internal controller memory.
Reset defaults—Push ENTER to
reset configuration settings or push
the BACK key to cancel.
Resets configuration settings to the
default values.
Calibration
Notes
• Output Mode
• Set the output mode to Active to use the current measured value in
a calibration.
• Set the output mode to Hold to use the last measured value in a
calibration.
• Set the output mode to Transfer to transfer a specified value to the
4-20 mA input for use in a calibration.
• Cal Options
• Select Current to perform a calibration using current values (mA).
• Select Input to perform a calibration using measurement values (such
as psi).
English
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Hach sc200 4-20 Specifications

General

Operating Temperature	-20 to 60 °C (-4 to 140 °F)
Power Requirements (Voltage)	100-240 VAC, 50/60 Hz
Power Requirements (Power Consumption)	20 VA max.
Power Supply	100 to 240 VAC, 50/60 Hz
Operating Humidity	5 to 95% RH, non-condensing
Outputs	4-20 mA
Relay Contact Rating	5 A at 250 VAC, 5 A at 30 VDC
Digital Communication	Modbus RTU, HART
Enclosure Rating	NEMA 4X/IP66
Display	LCD
Dimensions	144 x 144 mm
Relay Output	Two SPDT (single pole double throw) relays