Flowserve NRS 2-4 - Manual (Page 12)

12
Table 1 measuring voltages
Measuring
voltage U
M
Decoding
0 V – 1 V Malfunction in electrode supply cable (short circuit or interruption)
1 V – 4 V Electrode exposed or fluid temperature
≥
395 °C
4 V – 7 V Electrode submerged,
HIGH LEVEL
≥
7 V Malfunction in electrode (defective insulation seal, leaky stuffing box)