NIVELCO Nivocap CK User manual

ckm105en2106h 1/3
Thank you for choosing a NIVELCO instrument.
We are convinced that you will be satisfied with our product!
1. APPLICATION
The NIVOCAP CK capacitive level switches operate in the RF (radio-frequency) ~ 130 kHz range.
The instrument is less sensitive to material adhesions caused by the measuring probe's design and the so-called reference
probe-based operating principle. The device is capable of level switching in solids and powders with a dielectric constant
greater than 1.5 relative permittivity (Ɛr) and to a limited extent in liquids (see 2.1 General data).
The device needs to be calibrated after it is installed.
During operation, the device evaluates the capacitance difference of the connected probe continuously. Until the probe is
in the air (the medium does not reach the probe) the measuring and reference probe is at the minimal capacitance value
(εrelative=1) relative to the instrument housing. When the medium reaches the probe, the capacitance will increase
(εrelative≥1). The device measures the capacitance change relative to the reference value stored during the calibration
procedure.
The reference probe is designed so that the material deposits on the probe are ignored, preventing any false switching.
There are four measuring ranges switchable on the device (see Chapter 4: Sensitivity Ranges)
4th sensitivity range: 0.5 pF, εrelative= 1.5…2.0
3rd sensitivity range: 2.5 pF, εrelative= 2.0…4.0
2nd sensitivity range: 8.0 pF, εrelative= 4.0…7.0
1st sensitivity range: 18 pF, εrelative= > 7.0
2. TECHNICAL DATA
2.1 GENERAL DATA
Type
Standard
CK(D,G,M,P,H,N)–1–1
CM(D,G,M,P,H,N)–1–1
With Extension Rod
CK(R,L,E,F,V,Z)–1–1,
CM(R,L,E,F,V,Z)–1–1
With Extension Cable
CKK–1–1
CKC–1–1
Probe length 0.3…0.6 m (1.3…2 ft) 0.7…3 m (2.3…10 ft) 1…10 m (3.3…33 ft)
Material of wetted parts 1.4571 (316Ti) stainless steel + PPS insulation
1.4571 (316Ti)
+ PPS Insulation;
Cable: PE-coating
Process connection As per order code (see 2.5 Order Codes)
A
mbient temperature (1)
–
30…+65 °C (
–
22…+149 °F)
Medium temperature (1)
(for solids) –30…+110 °C (−22…+230 °F) –25…+80 °C
(−13…+176 °F)
Medium temperature for
high-temperature version (1)
(for solids)
–30…+235 °C (−22…+455 °F) –
Medium temperature (1)
(for liquids) 0…+65 °C (+32…+149 °F)
Max. process pressure 16 bar (1.6 MPa, 232 psi)
Response time (selectable) 0.15…15 sec
Power supply (universal) 20…250 V AC (50/60 Hz) or 20…50 V DC
Power consumption 2.5 VA / 2 W
Housing material Powder-coated aluminum
Electrical connection (1) 2× M20x1.5 plastic cable glands, for cable Ø6…Ø12 mm (.236"… .472"),
2× terminal blocks for 0.5…1.5 mm² (AWG20…15) wire cross section
Electrical protection Class I.
Ingress protection IP67
Weight 2 kg (4.4 lb) 2 kg + 1.4 kg/m
(4.4 lb + 1 lb/ft)
2 kg + 0.6 kg/m
(4.4 lb + 0.4 lb/ft)
(1) For explosion-proof design, see section 2.3 Ex information
2.2 ACCESSORIES
User’s manual,
Warranty Card,
EU Declaration of Conformity,
2× 3-pole terminal blocks,
1 ½ " klingerit sealing, for BSP only
2× M20x1.5 cable glands
2.3 EX INFORMATION
C–1–5EX,C–1–7EXReference document
Ex marking
A
TEX II 1/2D Ex ta/tb IIIC T85°C…T220°C Da/Db ckm1051m060bh_06
IEC Ex Ex ta IIIC T85°C…T220°C Da/Db ckm1051a0600h_02
Electrical connection 2× M20×1.5 metal cable glands for Ø8…Ø13 mm (Ø.315… Ø.5") cable -
Thermal Properties
With extension cable Standard, or with extension rod
CKK–1–5, 7Ex
CKC–1–5, 7Ex
CK(D,G,M,P,H,N)–1–5, 7Ex
CK(R,L,E,F,V,Z)–1–5, 7Ex
High-temperature version
CM(D,G,M,P,H,N)–1–5, 7Ex
CM(R,L,E,F,V,Z)–1–5, 7Ex
Medium temperature min.: –30 °C (−22 °F);
max.:
+60 °C
(+140 °F)
+70 °C
(+158 °F)
+80 °C
(+176 °F)
+60 °C
(+140 °F)
+70 °C
(+158 °F)
+95 °C
(+203 °F)
+110 °C
(+230 °F) +220 °C (+428 °F)
Ambient temperature min.: –30 °C (−22 °F);
max.:
+65 °C
(+149 °F)
+60 °C
(+140 °F)
+65 °C (+149
°F)
+60 °C
(+140 °F)
+60 °C
(+140 °F)
+50 °C
(+140 °F) +35 °C (+95 °F)
Highest permissible surface temperature
of the process connection
+80 °C
(+176 °F)
+90 °C
(+194 °F)
+80 °C
(+176 °F)
+90 °C
(+194 °F)
+95 °C
(+203 °F) +195 °C (+383 °F)
Temperature classes T85°C T85°C T95°C T85°C T85°C T95°C T110°C T220°C
2.4 OUTPUT DATA
Relay Solid-state output
C–1–1, C–1–5Ex C–1–3, C–1–7Ex
Output type SPDT (potential-free) SPST (electronic)
Output rating 250 V AC, 8 A, AC 1 250 V AC, 50 V DC, 1 A
Output protection — —

2/3 ckm105en2106h
2.5 ORDER CODES (NOT ALL COMBINATIONS ARE POSSIBLE!)
2.6 DIMENSIONS
Standard With Extension Rod With Extension Cable High-temperature version
with standard probe
High-temperature version
with rod probe extension
CKM–1–1, CKP–1–1 CKR–1–1, CKL–1–1 CKK–1–1, CKC–1–1 CMM–1–1, CMP–1–1 CMR–1–1, CML–1–1
3. MOUNTING
It is advised to check if the device is working properly on a sample quantity of material before installing the device.
WARNING!
• Handle the device with great care, with special attention to the probe. Any strong impact or bending to the probe may damage the device.
• A protective shield must be installed (see the figure) if the probe is exposed to falling material or excessive mechanical load.
• For tanks where strong vibration may occur, use the vibration-resistant version with the solid-state switch (see sections 2.4 and 2.5!).
• The device is rated IP67 - in the case of liquids, only the lower metal part of the probe may touch the liquid continuously!
Screw in the device by its hexagonal neck. After screwing process connection in tightly, the housing can be rotated (max. 300°), to adjust the cable gland to the required position.
It might become necessary to install the device at an offset level position relative
to the switching level taking the coning and caving of the material in the silo into
account.
High level indication Low level indication
In the case of powders, the angle of the side-mounted device's probe must be greater than
that of the coning of the medium (or, in the case of high-level detection, vertical) to prevent
powder deposition on the probe that might cause false switching. Avoid mounting the unit
near recesses any surface that facilitates forming deposits.
Recommended Not recommended
NIVOCAP C - - Ex(*)
VERSION CODE PROBE TYPE CODE HOUSING CODE PROBE LENGTH [m (ft)] OUTPUT /EXCODE
Standard K Standard ¾" BSP D
A
luminum 1 CODE CODE SPDT, potential-free relay 1
High-temp . M Standard ¾" NPT G 0 0 (0) 0 0 (0) SPST, solid-state output 3
Standard / 1" BSP M
1 1 (3.3) 1 0.1 (0.33) SPDT, potential-free relay / Ex ta/tb IIIC 5
Standard / 1" NPT P 2 2 (6.6) 2 0.2 (0.66) SPST, solid-state output / Ex ta/tb IIIC 7
Standard / 1½" BSP H
3 3 (10) 3 0.3 (1)
Standard / 1½" NPT N 4 4 (13) 4 0.4 (1.3)
With extension rod / 1½" BSP R
5 5 (16.3) 5 0.5 (1.63)
With extension rod / 1½" NPT L
6 6 (19.7) 6 0.6 (1.67)
With extension cable / 1½" BSP K
7 7 (23) 7 0.7 (2.3)
With extension cable / 1½" NPT C
8 8 (26) 8 0.8 (2.6)
With extension rod ¾" BSP E
9 9 (29.5) 9 0.9 (2.95)
With extension rod ¾" NPT F
A 10 (33)
With extension rod 1" BSP V
With extension rod 1" NPT Z
(*) The order code of an Ex-version should end in ’Ex’
Variants with extension cable types: from 1 m up to 10 m (3.3…33 ft) , by 0.5 m (1.64 ft) steps!
Variants with extension rod types: from 0.7 m up to 3 m (2.3…10 ft), by 0.1 m (0.32 ft) steps!
Standard types : CK
 -103, CK  -104, CK  -105, CK  -106

ckm105en2106h 3/3
4. INSTALLING AND COMMISSIONING
4.1. BASIC CONCEPTS
Response (delay) time adjustment potentiometer: DELAY
The instrument senses the material when it reaches the probe and the switching is
performed only after a predefined time (0…15 sec). This delay time can be set by the
user with the delay time potentiometer between 0 and 15 sec.. The delay time can be
increased by turning the potentiometer to the right.
When the level of the material drops below the probe, the switching is also performed
only after the selected time delay.
If the "material present” and the „material not present” state changes during the set time
interval, the delay timer restarts.
Sensitivity fine adjustment potentiometer: FINE SENS
Further fine sensitivity settings can be set within the selected sensitivity range with a
potectiometer. The sensitivity is increased by turning the potentiometer to the right.
Sensitivity range button: SENS
This button selects the required sensitivity range. To cycle through the ranges, press the
button repeatedly.
This setting is stored even if the unit is turned off.
Fail-safe switch: F – S (H – S)
The low and high fail-safe mode can be selected with the fail-safe switch.
The fail-safe indication is activated, when the relay is in a de-energized state (see the
operation diagram table).
High fail-safe:
The probe senses the material, but the relay reamains in a de-energized state like in case
of a power failure.
Low fail-safe:
The probe does not sense the material, but the relay remains in a de-energized state like
in case of a power failure.
4.2. COMMISSIONING
Remove the housing cover to access the terminals and buttons.
In case of electronic (solid-state) output versions the output must be protected by
a 1.25 A fuse!
The instrument must be configured and calibrated after the installation and the wiring.
ATTENTION! Electrostatic discharge (ESD) may damage the device via its
terminals. Therefore, observe the common precautions, e. g., touching a properly
grounded point before removing the cover of the instrument.
The capacitive level switch will function incorrectly if:
The relative dielectric constant of the measured medium is under 1.5.
There is a conductive connection between the probe and the tank wall.
The instrument has improper grounding.
The insulation on the probe is damaged.
The probe is not properly assembled.
4.3. CALIBRATION
Calibration button: CAL
The calibration must be performed after the installation.
ATTENTION!
The instrument housing must be grounded!
The medium must not touch the probe during the calibration process!
Press and hold the CAL button for a few seconds.
First, the blue LED will come on, then it will blink and when the calibration is finished
successfully, the LED will change to the color of the corresponding operating mode.
During the calibration process, the device learns the capacitance value of the empty tank,
and it will be used as the reference capacitance value for measurements.
If the unit is installed in a hazardous (Dust-Ex) environment, the housing cover may not
be removed as long as the unit is energized. However, the calibration process can be
carried out with a magnet without removing the housing cover. The supplied magnetic
screw is used to calibrate the device through the aluminum housing.
In this case, the status LED will blink in blue during the calibration process. All other
configuration settings (sensitivity range selection, fine sensitivity adjustment, delay
adjustment, failsafe operating mode selection, and switching the magnetic calibration
switch on) must be carried out outside the hazardous environment (e. g., in the control
room) before mounting the instrument.
Calibration can be performed multiple times.
5. WIRING
Wiring of relay and electronic output versions
5.1 OUTPUT STATE DIAGRAM
POWER OPERATION FAIL-SAFE
MODE STATUS LED RELAY SOLID-STATE OUTPUT
ON
High level
High
Green blinking
54
6
Energized
5 and 4 ON
High
Red
Light
54
6
De-energized
5 and 4 OFF
Low level
Low
Green
Light
54
6
Energized
5 and 4 ON
Low
Red
Blinking
54
6
De-energized
5 and 4 OFF
OFF __
Low
or
high
OFF
54
6
De-energized
5 and 4 OFF
6. MAINTENANCE AND REPAIR
NIVOCAP CK–100 devices do not require regular maintenance. In some cases, however,
the probe may need to be cleaned from deposits.
This must be carried out gently, without damaging the probe.
Repair during or after the warranty period must only be carried out by NIVELCO.
Before returning the device for repairs, it must be cleaned carefully. The parts in contact
with the medium that might contain harmful substances must be decontaminated. Our
official form (Returned Equipment Handling Form) must be filled and enclosed. Download
it from our website www.nivelco.com. The device must be sent back with a declaration of
decontamination. A statement must be provided in the declaration that the
decontamination process was successfully completed, the device is clean and free from
harmful materials, and there are no hazardous substances on it.
7. STORAGE
Ambient temperature: –35...+60°C (–31...+140°F)
Relative humidity: max. 98 %
ckm105en2106h
July 2021
NIVELCO reserves the right to change anything in this manual without notice.