EUTECH INSTRUMENTS ?lpha-pH550 Manuale delle Istruzioni Scaricare il pdf (Pagina 12)

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2.3.4 Connecting Temperature Probe

For Automatic Temperature Compensated (ATC) pH readings, a 100Ω Pt RTD

temperature probe (2-wire or 3-wire) can be connected to the Controller.

3-Wire Probe:

1. Connect PT100 compensate wire to Pin 5 of J10 connector

2. Connect PT100 sense wire to Pin 6 of J10 connector

3. Connect PT100 GND wire to Pin 7 of J10 connector

2-Wire Probe:

1. Short Pin 5 & 6 of J10 connector using a small piece of wire

2. Connect PT100 sense wire to Pin 6 of J10 connector

3. Connect PT100 GND wire to Pin 7 of J10 connector

2.3.5 Connect Potential Matching Pin (PMP)

If using an electrode with a PMP, connect the additional wire (PMP) from the pH

electrode to Pin 8 of J10 connector. This liquid electrical reference wire is only used

when the pH Controller is configured to ‘Symmetrical mode of operation’. Refer

section 5.5 for details on symmetrical mode of operation.

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EUTECH INSTRUMENTS ?lpha-pH550 Manuale delle Istruzioni Pagina 12