Nivus NivuSonic Clamp On, Instruction Manual

Page: 8 / 110

®
Instruction manual
NivuSonic Clamp on
Page 8
2.3 Specifications
2.3.1 Transmitter
Power supply 100 to 240 V AC, +10 % / -15 %, 47 to 63 Hz
or 24 V DC ±15 %, 5 % residual fluctuation
Power consumption max. 48 VA
Wall mount enclosure
-
Material: Polycarbonate
-
Weight: approx. ca. 3700 g
-
Protection: IP 65
Operating temperature -20 °C to +50 °C
Storage temperature -30 °C to +70 °C
Max. humidity 80 %, non-condensing
Display Back-lit graphic display, 128 x 128 pixel
Operation 18 keys, dialog mode in German, English, French, Italian, Spanish, Polish,
Czech and Dutch
Outputs
-
load 500 Ohm, 12 bit resolution, accuracy better than 0.1 %
-
5 switchable relays, loadable up to 230 V AC / 2 A (cos.
ϕ

0,9

)
-
RJ45 for Internet communication
Data storage plug-in compact flash card up to 128 MB
Data transmission Via Compact Flash Card, Modbus TCP, integrated web server; connection
to local networks (LAN) and Wide Area Network (WAN, Internet)
via Ethernet or optional internal ISDN/GPRS or analog modem
2.3.2 Clamp On System
Measurement principle
Ultrasonic transit time as clamp on system
Material
PEEK and stainless steel 1.4571
Measurement frequency 1 MHz; other frequencies upon request
Velocity range
±
20 m/s
Inner pipe diameter
0,08 m to 1,4 m (DN 80 to DN1400)
Protection
IP 68
Operating temperature -30 °C to +80 °C (ambient temperature)
Storage temperature -30 °C bis +70 °C
Cable length 10 m
Type of cable Twinax
Outside cable diameter 8,5 mm
Sensor types Pair of sensors to clamp on pipes
Measurement uncertainty
Depending on hydraulic
conditions
-
Flow velocity (v
average
) within path ±0.1 % of measurement value
-
Flow (Q): ±1-5 % of measurement value
-
Offset velocity < ±5 mm/s
Temperature measurement using velocity of sound
Measurement range within
medium
0 °C to +80 °C
Measurement uncertainty
± 1 K