Before connecting the wires or cables, make sure that the transmitter is powered off. Figure 1. Connecting refractometer to Indigo520 Open the 2 hex screws on the cover of the transmitter using a 4-mm Allen key. Open the transmitter cover. Connect the wires inside the refractometer. For more information on connecting the refractometer, see model-specific installation guide. Connect the wires inside the transmitter, see Indigo500 User Guide (M212287EN).
