6
NRS 1-8
Technical Data
TÜV approval
TÜV · HWS · 08-417
Input
Four terminals for one level electrode
NRG 16-12, PN 40
NRG 17-12, PN 63
NRG 19-12, PN 160
Output
Two volt-free relay contacts
Max. contact rating: 250 V, 300 W, 3 A resistive with a life of 5 x 10
5
switching cycles
or 0.35 A inductive with a life of 2 x 10
6
switching cycles. Contact material: silver, hard-gold plated.
Delay of response
Default factory setting: 3 sec.
Up to 25 sec. after prior consultation with TÜV.
Sensitivity of response
10 µS/cm at 25 °C when used in conjunction with level electrode without measuring surface extension
and cell constant 0.3.
0.5 µS/cm at 25 °C when used in conjunction with level electrode with measuring surface extension and
cell constant 0.13 (see data sheet NRG 16-12).
Indicators and adjustors
Two LEDs for “Alarm”, one LED for “Power”, one button “TEST 1”,
one toggle switch “TEST 2 / INSPECTION”.
Mains voltage
230 V +/– 10 %, 50/60 Hz (please state voltage when ordering).
Special voltage 115 V +/– 10 %, 50/60 Hz or 24 V+/– 10 %, 50/60 Hz.
When using the ancillary unit URN 1 the equipment can also be fed with 24 V DC.
Power consumption
5 VA
Protection
NRS 1-8 IP 40 to EN 60529
Admissible ambient temperature
0 °C to 55 °C
Case materials
Base: Noryl SE 1-GFN 2 UL 94 VO, black
Cover: R-ABS UL 94 VO, stone grey
Weight
approx. 0.6 kg
