Page 3
Contents
1. Introduction .............................................................................................4
1.1 mini
CHEM
-pH Illustration............................................................................... 4
1.2 Unpacking Information .................................................................................... 6
1.3 Specifications ................................................................................................... 7
2. Operating Modes .....................................................................................8
3. Installation and Set-up ............................................................................9
3.1 Connection and Configuration Diagram ........................................................... 9
3.2 Mounting the Enclosure ................................................................................. 10
3.3 Mounting the Sensors..................................................................................... 10
3.4 Terminal Connections .................................................................................... 11
3.5 Setting the Control Limit ............................................................................... 12
3.6 Selecting Current or Voltage Output .............................................................. 14
3.7 Calibrating the 4 to 20mA Output .................................................................. 15
3.8 CMRR Control............................................................................................... 15
3.9 Factory Config. Jumpers................................................................................. 15
4. Calibration..............................................................................................16
4.1 Calibration Procedure..................................................................................... 16
4.2 Calibration Notes ........................................................................................... 17
5. Process Monitoring ...............................................................................18
6. Automatic Dosing ..................................................................................18
7. Manual Dosing .......................................................................................18
8. Fuse Replacement .................................................................................18
9. Troubleshooting ....................................................................................19
9.1 Instrument Function Troubleshooting............................................................. 19
9.2 pH Troubleshooting........................................................................................ 20
10. Warranty .............................................................................................21
11. Appendices ........................................................................................23
11.1 Checking the reference junction of a pH electrode. ..................................... 23
11.2 Determining if an instrument or electrode is faulty..................................... 23
11.3 Terminal connections when 12V DC option is fitted .................................. 24
11.4 Relay Output Wiring Examples for mains powered units............................ 25
11.5 Relay Output Wiring Examples for 12V DC powered units ........................ 26
11.6 Drilling Template ...................................................................................... 27
Содержание miniCHEM-pH
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