Vaisala PR-23 Series - Page 4

7. Configuration and calibration....................................................................59
7.1 Configuring
output signal damping............................................................... 59
7.1.1 Exponential damping.................................................................................59
7.1.2 Linear damping.......................................................................................... 60
7.1.3 Slew rate limit...............................................................................................61
7.2 Configuring output signal hold functionality................................................ 62
7.2.1 External hold............................................................................................... 63
7.2.2 Hold during wash........................................................................................63
7.2.3 Tolerance time.............................................................................................63
7.2.4 QF threshold............................................................................................... 64
7.2.5 Hold source interactions............................................................................64
7.2.6 Hold and signal damping...........................................................................65
7.2.7 Hold functions with DD‑23........................................................................ 65
7.3 Configuring refractometer system................................................................. 66
7.3.1 Configuring relays...................................................................................... 66
7.3.2 Configuring input switches....................................................................... 68
7.3.3 Configuring mA outputs............................................................................70
7.4 Calibrating concentration measurement........................................................72
7.4.1 Chemical curve............................................................................................74
7.4.2 Selecting display units and display decimals.......................................... 74
7.4.3 Field calibration...........................................................................................75
7.4.4 Entering field calibration parameters...................................................... 76
7.4.5 Direct BIAS adjustment..............................................................................76
7.5 Configuring prism wash................................................................................... 77
7.5.1 Wash cycle...................................................................................................77
7.5.2 Setting prism wash parameters................................................................82
8. Regular maintenance.................................................................................... 84
8.1 Checking sensor humidity level...................................................................... 84
8.2 Checking prism and prism gaskets.................................................................84
9. Troubleshooting.............................................................................................. 85
9.1 Hardware............................................................................................................85
9.1.1 Blank display............................................................................................... 88
9.1.2 Diagnostic LEDs..........................................................................................89
9.1.3 Display unreadable......................................................................................91
9.1.4 Troubleshooting messages
........................................................................92
9.1.5 Diagnostic message priorities...................................................................97
10. Sensor specifications
.................................................................................... 99
10.1 Sensor compatibility.........................................................................................99
10.2 Sensor rangeability...........................................................................................99
10.3 Sanitary process refractometer PR‑23‑AC...................................................100
10.3.1 PR‑23‑AC sensor model code.................................................................100
10.3.2 PR
‑23‑AC mounting hardware model code...........................................102
10.3.3 PR‑23‑AC specifications.......................................................................... 106
10.3.4 PR‑23‑AC parts list.................................................................................... 107
10.3.5 PR‑23‑AC mounting specifics..................................................................107
10.3.6 Mounting specifics for EHEDG‑certified PR‑23‑AC configuration....... 112
10.3.7 3‑A Sanitary Standard compliance.......................................................... 112
10.4 Sanitary probe refractometer PR‑23‑AP....................................................... 113
10.4.1 PR‑23‑AP model code............................................................................... 113
10.4.2 PR‑23‑AP mounting hardware model code............................................116
10.4.3 PR‑23‑AP specifications............................................................................118
PR-23 Series User Guide
IM-EN-PR23-E
2