GESTRA NRGT 26-1, Installation Instructions Manual

Page: 7 / 24

7
Corrosion resistance
Provided that the equipment is used for its intended purpose, its safety is not impaired by
corrosion.
Technical Data
– continued –
Sizing
The body must not be subjected to sharp increases in pressure. Welds and flanges of the electrode are
designed to withstand dynamic loading (bending and alternating stress). The dimensional allowances
for corrosion reflect the latest state of technology.
NRGT 261, NRGT 261S
– continued –
Power consumption
5 VA, 3 VA at 24 V DC
Fuse
Thermal fuse T
max
= 02 °C
Sensitivity
Range : Water
≥
0,5 µS/cm
Range 2: Water
≥
20 µS/cm
Range 3: Fuel oil EL
ε
r
2,3
Output
4 – 20 mA level-proportional; electrically insulated, max. load 500
Ω
Indicators and adjustors
2 red LEDs for “level 0 %” or “level 00 %” within the measuring range,
green LED for “level between 0 % and 00 %” of measuring range,
code switch for selecting the measuring range,
2 trimmer potentiometers for small-percentage adjustment of the measuring range,
2 terminal lugs for voltage measurement.
Cable entry
Cable gland with integral cable clamp
2 x M20 x .5
Protection
IP 65 nach DIN EN 60529
Max. admissible ambient temperature
70 °C (58 °F)
Weight
NRGT 26-: approx. .8 kg
NRGT 26-S: approx. 8.0 kg