Flowserve NRS1-40.1 Manuel d'utilisateur télécharger pdf (Page 5)

Explanatory Notes

Scope of supply

NRS 1-40.1

1 Control unit NRS 1-40.1

1 Terminating resistor 120Ω

1 Installation manual

System description

The control unit NRS 1-40.1 has four limiting functions for monitoring the MIN/MAX water levels (low/high

level alarms) and MAX temperature in steam and (pressurised) hot water plants in accordance with TRD

and EN 12952 and EN 12953.

The level electrodes type NRG 1x-40, NRG 1x-41.1 and the temperature transmitter type TRV 5-40 detect

the current water level and temperature and their readings are sent as a data telegram to the CAN bus.

The CANopen protocol is used for the data transfer via CAN bus.

Only one limiting system with one control unit NRS 1-40.1 may be used per CAN bus network.

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Flowserve NRS1-40.1 Manuel d'utilisateur Page 5