Flowserve NRGS 11-2 - Manual (Page 6)

6
NRGS 11-2, NRGS 16-2
continued
Technical Data
continued
Lengths supplied
500 mm
000 mm
500 mm
Mains supply
230 V +/– 0 %, 50/60 Hz
5 V +/– 0 %, 50/60 Hz
24 V +/– 0 %, 50/60 Hz (option)
Power consumption
5 VA
Fuse
Thermal fuse T
max
= 02 °C
Sensitivity
Range : 0 µS/cm
Range 2: 0.5 µS/cm
Electrode voltage
0 V
ss
Output
4 volt-free relay contacts for low level alarm,  normally open contact (e.g. for pump).
Max. contact rating with a switching voltage of 24 V, 5 V and 230 V a. c.: resistive 4 A,
inductive 0.75 A at cos ϕ 0.5.
Max contact rating with a switching voltage of 24 V d. c.: 4 A.
Contact material: silver, hard-gold plated.
Indicators and adjustors
2 red LEDs for signalling “Low water”,
 green LED for signalling “Pump ON”,
 four-pole code switch for changing sensitivity,
 button “TEST” for checking low-level alarm
 button “RESET” for resetting the low-level alarm
Cable entry
Cable gland with integral cable clamp
M 6 (PG 9)
M 20 (PG 6)
Protection
IP 65 to DIN 40050
Max. admissible ambient temperature
70 °C
Weight
approx. 0.8 kg