Flowserve NRA 1-3 - Manual (Page 6)

6
NRA 1-3
Technical Data
Supply voltage
30 V, 50 / 60 Hz
5 V, 50 / 60 Hz optional
Input
6 inputs for measuring electrodes NRG 6-9, NRG 6-7, NRG 6-8
 input for temperature sensor, e. g. TRG 5-63, temperature sensing element Pt 00
Output
 volt-free relay contact
Contact material: AgNi 0,5
Max. contact rating for switching voltages of 4 V AC/DC, 5 V AC and 30 V AC:
4 A resistive / inductive
Electrode voltage
 V
Banking-up of condensate setting
Difference temperature condensate/installation dts  K to 00 K, adjustable in steps of  K
(mode  and 6)
Difference temperature condensate/switchpoint banking-up of condensate dtC  K to 00 K,
adjustable in steps of  K (mode  and 7)
Switchpoint banking-up of condensate 0 °C to 55 °C, adjustable in steps of 5 K (mode  and 7)
Indicators and adjustors
 Three-digit seven-segment LED display, red, for indicating faulty steam traps and status and error
messages
3 LEDs for indicating banking-up of condensate, steam loss and malfunction in measuring electrode
3 Pushbuttons for parameter settings
 Ten-pole code switch for system configuration
Delay of response
max. 5 sec.
Power consumption
max. 4 W
External fuse
63 mA
Design
NRA -3a: for wall mounting
NRA -3e: for panel mounting
Protection
NRA -3a: IP 65 to EN 6059
NRA -3e: Front: IP 65 to EN 6059, back: IP 00
Protection class
NRA -3a:  (completely insulated)
Max. admissible ambient temperature
55 °C
Enclosure
Material: ABS