Flowserve NRS1-8 - Manual (Page 6)

6
NRS 1-8
Technical Data
Type approval no.
09 - 9 - 0
Input
Four terminals for the connection of one level electrode
NRG 6-, PN 40
NRG 7-, PN 63
NRG 9-, PN 60
Output
Two volt-free relay contacts (mounted in series in the case of design “b").
Max. contact rating: 50 V, 300 W, 3 A resistive with a life of 5 x 0 5 switching cycles of 0.35 A
inductive with a life of  x 0 6 switching cycles. Contact material silver, hard-gold plated.
Delay of response
Default factory setting: 3 s
(Up to 5 s possible after prior consultation with TÜV)
Sensitivity
0 µS/cm at 5 °C when used in conjunction with level electrode without measuring surface
extension (cell constant C = 0.3).
0.5 μS/cm at 5 °C when used in conjunction with level electrode with measuring surface
extension (cell constant C = 0.3) – see data sheet “NRG 6-”.
Indicators and adjustors
 LEDs “Alarm”,  LED “Power”,  button “TEST ”,
 switch “TEST  / INSPECTION”.
Mains supply
30 V +/- 0 %, 50/60 Hz (please state voltage when ordering).
Special voltage: 5 V +/- 0 %, 50/60 Hz or 4 V +/- 0 %, 50/60 Hz.
The ancillary unit URN  can be used for 4 V d. c. supply.
Power consumption
5 VA
Protection
NRS -8 IP 40 to EN 6059
Admissible ambient temperature
0 °C to 55 °C
Case materials
Base: Noryl SE -GFN  UL 94 VO, black
Cover: R-ABS UL 94 VO, stone grey
Weight
Approx. 0.6 kg