Điện cực đo mức nước Gestra NRG 16-51, NRG 17-51, NRG 19-51, NRG 111-51
Technical data
Service pressure
NRG 16-51, PN 40, 32 bar at 238 °C
NRG 17-51, PN 63, 46 bar at 260 °C
NRG 19-51, PN 160, 100 bar at 311 °C
NRG 111-51, PN 320, 183 bar at 357 °C
Mechanial connection
Screwed G3⁄4 A, ISO 228 (NRG 16-51, NRG 17-51, NRG 19-51)
Screwed G1 A, ISO 228 (NRG 111-51)
Materials
Screw-in body: 1.4571 X6 CrNiMoTi 17-12-2 (NRG 16-51, NRG 17-51, NRG 19-51)
Screw-in body: 1.4529 X1NiCrMoCuN25-20-7 (NRG 111-51)
Measuring electrode: 1.4571 X6 CrNiMoTi 17-12-2
(NRG 16-51, NRG 17-51, NRG 19-51)
Measuring electrode: 1.4122 X39CrMo17-1 (NRG 111-51)
Electrode tip: 1.4401 X5 CrNiMo 17-12-2
Electrode insulation: PEEK
(NRG 16-51, NRG 17-51, NRG 19-51)
Electrode insulation: special ceramic (NRG 111-51) NRG 1…-51: Four-pole connector: polyamide (PA) NRG 1…-51F: Terminal box 3.2161 G AlSi8Cu3
Lengths available
500 mm, 1000 mm, 1500 mm
pH value
Max. admissible: 10 (only NRG 111-51)
Electrical conductivity
Max. admissible: 100 μS/cm at 25 °C (only NRG 111-51)
Electrical connection
NRG 1-51: Four-pole connector, cable gland M19 (PG 11)
NRG 1…-51F: Aluminium terminal box, cable gland M20
Protection
IP 65 to DIN EN 60529
Admissible ambient temperature
Max. 70°C
Weight
Approx. 1.2 kg (without extension)
(NRG 16-51, NRG 17-51, NRG 19-51)
Approx. 2.1 kg (without extension)
(NRG 16-51F, NRG 17-51F, NRG 19-51F)
Approx. 1.8 kg (without extension) (NRG 111-51)
Approx. 2.7 kg (without extension) (NRG 111-51F)
