NIVELCO NIVOCONT K User Manual

Thank you for choosing a NIVELCO instrument!
1. APPLICATION
The conductive measuring principle can be applied to liquids with specific conductivity over
10 μS/cm. The switching unit can sense the resistance between probes. Conductivity measure-
ment is suitable only for detecting the presence of liquid at a given level of the tank. This level
is represented by the length of the probe.
The level switch consists of a NIVOCONT KRK–622– type switching unit and the
KLN–2 type probes selected according to the task. Probes are to be connected to the
NIVOCONT KS– 0 type probe socket head that can be screwed into the tank.
If the material of the tank or its internal insulation is not conductive then a reference probe
should be used in addition to the one, two, three or four probe(s), if the material of the tank is
conductive, the tank can be used as a reference probe.
The conductive switch is suitable for filling-emptying control with 2 relay outputs working simul-
taneously or for level detection of 2 independent levels (in 1 or 2 tanks) with 2 independent relay
outputs. More level switches can also be used with one common reference probe 'C' using any
combination of multiple-probe and single-probe socket.
2. TECHNICAL DATA
2.1 GENERAL DATA
2.1.1 Switch
KRK–622–1, –2
Probe voltage
Probe current
Sensitivity
Max. cable capacitance
Response time
Mechanical accuracy
Delay
Relay output
Switching voltage
Switching current
Switching power
Min. output power DC
Mechanical life-span
Electrical life-span
230 V or 110 V AC
Power supply U
Galvanically separated (AC 50/60 Hz)
n
Voltage range allowed Nominal voltage –15%...+10%
2.5 W / 5 VA (230 V AC, 110 V AC),
Power consumption
Ambient temperature
Electrical connection
Overvoltage category
Pollution degree
Electrical protection Class II
Ingress protection
Mechanical connection
Weight 248 g (0.55 lb)
2.4 DIMENSIONS
Switch
KRK–622–
Uninsulated base probe
Probe Socket
KRK–512–
KRK–622–4
max. 3.5 V AC
< 1 mA AC
Adjustable: 5...100 kΩ
800 nF (sensitivity 5 kΩ)
100 nF (sensitivity 100 kΩ)
max. 400 ms
±5%
Adjustable: 0.5...10 s
2× SPDT
250 V AC1, 24 V DC
16 A AC1
4000 VA AC1, 384 W DC
4 kV (power – output)
3 × 10 switches
7
0.7 × 10 switches
5
24 V AC/DC
1.4 W / 2 VA (24 V AC/DC)
–20...+55 °C (–4...+131 °F)
max. 2.5 mm (AWG14)
2
II
2
Class III
IP20
DIN EN 60715 rail
147 g (0.32 lb)
Pg7
Cable Probe
KSK–201
2.3 ACCESSORIES
– User's Manual
– Warranty Card
– EU declaration of conformity
– Seal (2 mm [0.08"] thick)
(KLINGER OILIT):
1× ⅜" (KSP–201, KSS–201, KSN–201)
1× 1½" (KSH–20)
– M6 nut (standard SW):
3× (KSH–202)
4× (KSH–203, KSH–204)
– M6 nut (non-st. SW)
1× (KSH–204)
2.1.2 Probe sockets
KSK– KSP– KSS–
201 201 201
Number of probes 1
Insulation of socket ABS PP
M4 nut,
Cable gland Pg7
(1)
protected by a rubber cap
Process conn. – ⅜" BSP
A44
Socket material – PP
c. steel
Housing material –
max. +80 °C
Medium
temperature
(+176 °F)
3 bar
Max. pressure –
(43.5 psi)
Ingress protection – IP20
50 g
Mass 100 g (0.22 lb)
(0.11 lb)
r = reference probe
2.2 ORDER CODES
(NOT ALL CODE VARIATION AVAILABLE)

KRK–622– NIVOCONT KS
Power supply Code
Type
1
230 V AC
Cable probe
110 V AC 2
24 V AC/DC 4
PP socket
 Carbon steel socket
KLN–2
Stainless steel socket
Code Probe length Code
Stainless steel socket
0 0 m 0 m 0
1 5
1 m (3.3 ft) 0.5 m (1.64 ft)
2
2 m (6.6 ft)
3 3 m (10 ft)
M20x1.5
SW55
Probe Socket
KSH–20
M20x1.5
Separator
KLP–204
KSH–
KSN–
201
202 203 204 301 302
2+r 3+r 4+r 1+r 2+r
PFA
M20x1.5
cable diameter Ø6...12 mm (Ø0.25...0.5 inch)
1½" BSP
KO35
stainless steel (1.4571)
Powder-coated
cast aluminum
max. +200 °C (+391 °F) max. +80 °C (+176 °F)
16 bar (232 psi) 3 bar (43.5 psi)
IP65
400 g (0.88 lb)
  
– 0
Code Housing mat. Code
K Aluminum
SINGLE PROBE Plastic
P
S
N
MULTIPLE PROBES
Separator:
H
NIVOCONT KLP–201 – for plastic version
NIVOCONT KLP–204 – for aluminum version
⅜" BSP
Probe Socket
KSP–201 / KSS–201 / KSN–201
Probe Socket
KSH–30
NIVOCONT K
KRK–622
CONDUCTIVE LEVEL SWITCH
USER'S MANUAL
PDF

Manufacturer:
NIVELCO Process Control Co.
H–1043 Budapest, Dugonics u. 11.
Tel.: +36-1-889-0100 Fax: +36-1-889-0200

E-mail: sales@nivelco.com www.nivelco.com

KLN– KLP– KLP–
2 201 204
303 304
3+r 4+r 1 –
PP –
– –
M6 –
KO35
PP –
1.4571
PBT – PP PVDF
max. max.
– +80 °C +130 °C
(+176 °F) (+266 °F)
–
IP67 –
220 g/m
–
(0.13 lb/ft)
cable: Ø4...7 mm
(1)
Probe number Code
2 1 + reference probe* 1*
3 2 + reference probe 2
3
3 + reference probe
4 + reference probe 4
*only plastic version
Probe
KLN–2
Separator
KLP–201
krk622en1905h ♦ page 1