Kobold NRM, Operating Manual

Page: 34 / 52

NRM
page 34 NRM K06/0422
15. Technical Information
Type
Integrated
(NRM-7)
Compact (NRM-4)
Plastic
housing
Metal housing
High temperature
version
Measured values level, distance, volume, mass
Frequency of measurement signal -25 GHz (K-band)
Measuring range 0.2 – 23 m
Linearity error * <0.5 m; ±25 mm, 0.5-1 m: ±15 mm, 1-1.5 m: ±10 mm, 1.5-8 m: ±3 mm,

8 m: ±0.04 % of the measured distance
Min. beam angle 11° depending
on the antenna
type
6° depending on the antenna type
Min. Ɛr of the medium 1.9 depending
on the meas.
range
1.4 depending on the meas. range
Resolution 1 mm
Temperature error
(acc. to EN 61298-3)
0.05 % FSK / 10 °C (-20...+60 °C)
Power supply 20...36 V
DC
, ATEX: 20...30 V
DC
Output Digital
communication
4-20 mA + HART ®
Display NRM-300P graphical display unit (optional)
Measuring frequency 10...60 s as per application settings
Antenna diameter 38 mm, 48 mm, 75 mm, 148 mm
Antenna material
antenna (horn, parabolic): stainless steel 1.4571 (316
Ti); enclosure: PP, PTFE
antenna (horn,
parabolic); stainless
steel 1.4571 (316 Ti);
enclosure: PTFE
Process temperature -30...+100 °C (up to max. 2 min.: 120 °C);
with PP antenna enclosure: max. 80 °C
-30...+180 °C
Maximal medium pressure 25 bar (at 120 °C), with plastic antenna enclosure or plastic flange:
3 bar (at 25 °C)
Ambient temperature -20...+60 °C
Process connection thread, flange, Tri-Clamp
®
, sanitary connection
Protection IP68 (Ex: IP67) IP67
Electrical connection LiCY cable
2x0.5 mm
2
(AWG20)
shielded ø 6 mm
standard cable
length 5 m
(max. 30 m)
2 x M20x1.5 cable internal thread for 2 x ½“ NPT
cable protective pipe, cable outer diameter ø7-13 mm,
wire cross section: max. 1.5 mm 2
Housing material RP PBT paint coated aluminium or stainless steel
Sealing FKM, EPDM
Communication certifications R&TTE
Weight
1-1.6 kg
aluminium 2-
2.6 kg
stainless steel
3.3-3.9 kg
aluminium 2.7-3.3 kg
stainless steel 4-4.6 kg
* Under reference conditions: Examined in case of proper application settings at 95% sample rate level. The
environment should be free of EMC noises and power supply voltage fluctuations in accordance to the standard,
under constant temperature. The reflector should be a plane plate reflector with ideal material, surface and
dimensions (min. 3x3 m). The largest false echo should be 20 dB smaller than the useful echo.