NIVELCO NIVOPRESS NPK User manual

Thank you for choosing a NIVELCO instrument.
We are sure that you will be satisfied throughout its use.
1. APPLICATION
The NIVOPRESS submersible hydrostatic level transmitter is applicable for the continuous level measurement of clean
or chemically faintly contaminated liquids in bored well, open reservoirs and tanks. The NIVOPRESS is easy to install in
already existing tanks and in deep bored well and is especially recommended for controlling of submersible pumps.
2. TECHNICAL DATA
Type NPK NPH
Ranges 0 …1, 2, 5 etc max 200 m. water head (see order codes)
Overload allowed For models with measuring limit below 20 m w. h. 2 x measuring limit
For models with measuring limit over 20 m w. h. 1.5 x measuring limit
Output 4 … 20 mA 2-wire 0 … 10V 3-wire
Operating voltage 9 to 30 V DC 18 to 30 V DC
Maximum load resistance Rs = (Us - 9 V) / 0.02 A
Us= voltage of the power supply ≥5 kΩ
Current — < 6 mA
Accuracy (FSO) ≤± 0.5 %
Zero drift ≤± 0,1 mA ≤80 mV
Temperature coefficient ≤± 0.1 %/ 10K ≤± 0.2% / 10 K
Operating temperature -10 °C to +60 °C for special request +75 °C
Ingress IP 68
Cable cross secion 0.34 mm2
Cable coating Polyurethane ∅7mm
Cable length up to 300 m according to the order
Probe size ∅22 x 215 mm
Mass probe: 0.2 k g cable: 0.06 kg/m
Wetted parts
Sensor: stainless steel 316L
Probe stainless steel 1.4571
Cable coating: polyurethane
Sealing: VITON
Protecting cap: ABS
Cable mounting plate NAA-103
Applicable With cable length up to150 m
Operating temperature -10 °C to +45 °C
Dimensions 110 x 110 mm
Cable terminal box NAA-101
Dimensions 139 x 119 x 70 mm
Ingress IP 65
Operating temperature –40 °C to +65 °C
Material Plastic
Cable gland ASM16 (∅5 to ∅10mm)
Electric connection Terminal block for cable with max cross section of 2.5 mm2
Cable terminal box with over voltage protection NAA-102 (for 2-wire models only)
Voltage clipping 33 Vpp
Serial resistance 13 ohm ±10 %
Leakage current 10 µA
Other data Same as with NAA101
Over voltage protection unit OVP12/33 and OVP32/33
Electric data Same as with NAA102
OVP12/33 OVP32/33 DIN rail mount
Ingress protection IP 54 IP 20
Dimensions 72 x 42 x19 mm 62 x 65 x 18 mm
2.1 ACCESSORIES Optional (to be ordered)
User’s Manual Cable mounting plate NAA 103
Guarantee sheet Cable terminal box NAA 101
Cable terminal box with OVP12/33 NAA 102
DIN rail mount over voltage protection OVP32/33
2.2 ORDER CODE
NIVOPRESS NP-2-
Output Code Range ** Code Cable length Code Cable length Code
0 … 1 m water head 1 10 m 1 1 m 1two-wire
4 … 20 mA K0 … 2 m water head 2 20 m 2 2 m 2
0 … 5 m water head 3 30 m 3 3 m 3three-wire
0 … 10 V DC H0 … 10 m water head 4 40 m 4 4 m 4
0 … 20 m water head 5 50 m 5 5 m 5
0 … 50 m water head 6 60 m 6 6 m 6
** Different span within the range
on special request. 0 … 100 m w. head 7 70 m 7 7 m 7
0 … 200 m w. head 8 80 m 8 8 m 8
90 m 9
up to 100 m
9 m 9
100 m A 0 m 0
200 m B 10 m 1
300 m C : :
over
100 m
90 m 9
USER’S MANUAL
Manufacturer:
NIVELECO Process Control Co.
H-1043 Budapest, Dugonics u. 11.
Tel: [phone] Fax: [phone]
e-mail: [email protected]m http://www.nivelco.com
2.3 DIMENSIONS in mm
NIVOPRESS NP probe
215
∅
22
protection
cap
St.St.
cartridge
breathing
cable
∅
7
Cable mounting plate NAA103
mounting
plate
breathing cable
Tartó
110
110
15
30
15
∅
10
∅
6,3
7,5
breathing cable
Cable terminal box NAA101/NAA102
139
airing
119
80
ø4,5
Conduit opening Mounting

3. INSTALLATION
For fastening the cable use cable mounting plate NAA103 that provides a solution for
hanging the cable without slipping and risk of crushing. This mounting plate can be applied
with cable length of max 150 m. Over length of 150 m special design has to be used.
Steps of installation:
-Pass the special cable through the glands, arrange proper length of cable and fasten
the cable with the glands.
-Fasten cable mount plate (e.g. by the use of 2 pcs of M5 screw) to a plain surface.
-Excessive cable part has to be wounded on a pipe with a min. diameter of 100mm
The special cable must not be cut short!
-Let the probe down to the lowest possible point, for only the height of the liquid above
the probe will be measured..
For connecting of the special breathing cable and the signal cable use the cable terminal
box NAA101 or NAA102 (with IP65), that accommodates the cable end in an ambience free
of dust and humidity. In open air or industrial applications the transmitter should be
protected against surges/over-voltage. The GND of the OVP must be connected with the
shortest possible wire (and without direction changes) to the protecting ground. For this
case the application of the SAA-102 terminal box (with OVP) is suggested preferably next to
the measurement
In case of distances over 15 to 20 m with cabling in open air between transmitter and
processing unit the use of an additional over voltage protection is advised to protect the
processing unit against overvoltage.
For protection against surges coming through the medium, a protecting electrode e.g. a
steel pipe is also recommended
THREE-WIRE (0 … 10 V) VERSION
filter
breathing
cable
FA
A = transparent
S
F = black
U
t
P
0...10 V +
-
P = red
S = yellow
Power supply
shielding
mounting
plate
NAA-101
or
NAA-102
NAA-103
≈
100 mm
Suggested mounting arrangement using
the NAA -103 and the NAA-102
4. WIRING
TWO-WIRE (4 … 20 mA) VERSION
power supply
4-20mA
filter
breathing
cable
FP
F= black
P = red
shielding
S
S= yellow
After completing the wiring pull the filter (found in the cable terminal box) onto the end of
the cable!
Wiring of the over voltage protection
NAA-102
OVP32/33
Power suppl
y
OVP12/33
shielding
FIELD
4...20mA
IN1
IN2 OUT2
OUT1
+-
steel protection
pipe
GND
Power supply
IN1
IN2 OUT2
OUT1
+-
GND
E
F
A B H G
C
D
U
t
U
t
+-
+-
4...20mA 4...20mA
5. PUTTING INTO OPERATION, ADJUSTMENT
The unit installed and wired according to the specification is immediately operable,
however the specified accuracy will be reached in one-hour time.
6. MAINTENANCE, REPAIR
The unit does not require regular maintenance. In some instances however, the probe
may need occasional cleaning to remove surface deposits within the protective cap that
can easily flipped out. Do not touch the sensor membrane. Repairs during or beyond
guarantee period are to be carried out solely by the manufacturer.
7. STORAGE CONDITIONS
Ambient temperature: - 10 °C to +60 °C
8. GUARANTEE
The Manufacturer guarantees the above product for a period of two (2) year from the
date of purchase. Claims under guarantee will be dealt with only on presentation of the
Guarantee Sheet and a copy of the Purchase Invoice.
Repairs under guarantee are carried out at the Manufacturer’s premises. The Purchaser
is liable for costs of dismantling and re-installation as well as transport costs.
Guarantee claims shall not be accepted for defects arising from rupture, disaster, from
incompetent installation or usage.
npk2110a0600h_01
February, 2002
Technical specification may be changed without notice.