Hach sc200 User Manual

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Table of Contents
6.2.1 Replacing the Standard Cell Solution and Salt Bridge.............................................................................35
Section 7 Troubleshooting ...................................................................................................................................37
7.1 Error Codes .......................................................................................................................................................37
7.2 Warnings ...........................................................................................................................................................37
7.3 Troubleshooting the pH Sensor.........................................................................................................................38
7.3.1 Troubleshooting a pH Sensor without Integral Digital Electronics ...........................................................38
7.3.2 Troubleshooting the pH Sensor with Integral Digital Electronics .............................................................39
7.4 Checking ORP Sensor Operation......................................................................................................................40
7.4.1 Troubleshooting the ORP Sensor without Integral Digital Electronics .....................................................40
7.4.2 Troubleshooting the ORP Sensor with Integral Digital Electronics ..........................................................40
Section 8 Replacement Parts and Accessories..................................................................................................41
8.1 Replacement Items, Accessories, and Reagent and Standards .......................................................................41
Section 9 How to Order.........................................................................................................................................43
Section 10 Repair Service.....................................................................................................................................44
Section 11 Limited Warranty.................................................................................................................................45
Section 12 Compliance Information ....................................................................................................................47
Appendix A General pH Information....................................................................................................................49
A.1 pH Measurement Theory............................................................................................................................49
A.2 PID Controller Basics .................................................................................................................................49
Appendix B Modbus Register Information..........................................................................................................53

Hach sc200 Specifications

General

Enclosure Rating	NEMA 4X/IP66
Operating Temperature	-20 to 60 °C (-4 to 140 °F)
Ambient Temperature	-20 to 60 °C (-4 to 140 °F)
Enclosure Material	Polycarbonate
Operating Humidity	0 to 95% non-condensing
Relay Outputs	Up to 4 SPDT relays
Storage Conditions	-40 to 70 °C (-40 to 158 °F)
Display	Graphical LCD
Inputs	2 digital sensor inputs
Outputs	4-20 mA
Power Supply	100 to 240 VAC, 50/60 Hz
Analog Outputs	2 or 4, 0/4-20 mA
Certifications	CE
Communication	Modbus RTU, HART
Dimensions	144 x 144 mm
Mounting	Panel mount
Output	4-20 mA
Power Requirements (Voltage)	100 to 240 VAC
Warranty	1 year
Weight	1.2 kg