Flowserve NRS 1-7 Installation Instructions Manual page 26

Technical Data EN
NRS 17
Type approval no.
TÜV · WB · 0554
EG 009B00077
EG 009B00075
Input
Four terminals for the connection of one level electrode
NRG 6, PN 40
NRG 6S, PN 40
NRG 68S, PN 40
NRG 69S, PN 40
NRG 7, PN 6
NRG 9, PN 60
NRG , PN 0
Output
Two voltfree relay contacts (mounted in series in the case of design "b").
Max. contact rating: 50 V, 00 W,  A resistive with a life of 5 x 0 5 switching cycles of 0.5 A
inductive with a life of  x 0 switching cycles. Contact material silver, hardgold plated.
6
Delay of response
Default factory setting:  s
Factory setting for marine applications: 5 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.).
0.5 µS/cm at 5 °C when used in conjunction with level electrode with measuring surface extension
(cell constant C = 0.) – see data sheets "NRG 6", "NRG ".
Indicators and adjustors
 LEDs "Alarm",  LED "Power",  button "TEST ",
 switch "TEST /INSPECTION"
Mains supply
0 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 7 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
6