Analog output ................................................................................................... 31
Serial interface (pH 538 only) ............................................................................ 32
Automatic transmission of measured value ..................................................... 33
Measured value transmitted by keypressing: "PRINT" ..................................... 33
Readout of memory ........................................................................................ 34
RESET function.................................................................................................. 35
Maintenance / Cleaning ..................................................................................... 36
Maintenance................................................................................................... 36
Cleaning......................................................................................................... 36
Troubleshooting................................................................................................. 38
Technical data.................................................................................................... 43
Accessories ....................................................................................................... 48
Contents
7