Milltronics Pointek CLS 200 User manual

Technology based. Customer driven.
February 1998
Instruction ManualInstruction Manual
PL-540
33455400
Rev 1.1
Pointek CLS 200
Capacitance Liquids/Solids

hank you for purchasing Milltronics products. We endeavour to design
equipment that is simple to use and reliable in its operation, with the aim
of satisfying our customers' needs.
Milltronics has been designing and manufacturing process equipment since
1954. Our fields of expertise include ultrasonic and capacitance level
measurement, in-line weighing of dry bulk solids and motion sensing.
Milltronics is established world wide through associate offices and
representatives. Our network is continually being refined to provide our
customers with first rate sales information, engineering assistance and after
sales support.
For more details on our products and service, please contact us and we will
provide you with a listing of the offices or representatives nearest you.
T

ABOUT POINTEK CLS 200
Pointek CLS 200 is to be used only in the manner
outlined in this instruction manual.
The Pointek CLS 200 capacitance level switch provides output on high or low process material
levels. When the measured material approaches or contacts the switch’s probe, an increase in
capacitance is sensed and a high level alarm can be triggered. If a low level alarm is required
then the lack of material contact is sensed and this condition triggers the low level alarm.
Pointek CLS 200 Outputs
✓One form ‘C’ (SPDT) relay
✓One open isolated, non-polarized, solid-state switch
Pointek CLS 200 Features
✓NPT, BSP and 3A compliant Tri-clamp connections
(other connections on request)
✓Corrosion resistant construction, Kynar® and 316 stainless steel wetted parts
✓35m (115 ft) maximum insertion length
✓Fully adjustable process alarm: level, time delay, and fail-safe mode
✓Rigid extensions of standard and sanitary versions
✓Cable version with customizable length
Pointek CLS 200 Applications
✓Liquids, slurries, powders, granules, and solids
✓Foods and pharmaceuticals
✓Chemical and petrochemical
✓High pressure and temperature
PL-540 3

SPECIFICATIONS
Power: » 12 - 250 V ac/dc 50/60 Hz, 2 VA / 2 W max
Environmental: » location: » indoor / outdoor
» altitude: » 2000 m max
» ambient temperature: » -40 to 85 °C (-40 to 185 °F)
» relative humidity: » suitable for outdoor (Type 4X / NEMA 4X /
IP65)
» installation category: » II
» pollution degree: » 4
Process: » dielectric constant (εr):»1.5min
» temperature: » -40 to 125° C (-40 to 257° F)
» pressure: » standard and rigid extension versions
0 to 25 bar / 365 p.s.i. / 2500 kPa
gauge (nominal)
» cable version
0 to 10 bar / 150 p.s.i. / 1000 kPa gauge
(nominal)
Alarm Output: » relay: » 1 form ‘C’ (SPDT) contact, rated 8 A at 250 V
ac / 5 A at 30 V dc, non-inductive
» solid state switch: » rated 250 V ac / 300 V dc, 100 mA max
» time delay: » ‘on/off alarm’ selectable, 1 to 60 s adjustable
» hysterisis: » 2 mm (0.08")
» repeatability: » 2 mm (0.08")
» fail-safe operation
Electronics/Enclosure:» termination: » removable terminal block, 2.5 mm2max
» construction: » epoxy coated aluminum with gasket
» optional thermal isolator, 316 stainless steel
» ingress protection: » Type 4X / NEMA 4X / IP65
» electrical: » 2 x 1/2" NPT conduit entry
PL-540 4

Probe:
Approvals: » CE, CSA NRTL/C FM, CENELEC, 3A, refer to device nameplate
Kynar®is a registered trade mark of ELF Atochem
* other process connections available on request.
** for a chemical resistance list for Kynar, contact your local distributor.
length, max. mounting * extension tensile, max. sensor
Standard 5.5 m (18 ft) 3/4" NPT, 1" BSP,
11/2" BSP,
316 stainless steel
316 stainless
steel n / a Kynar®
Sanitary 5.5 m (18 ft) 1", 1 1/2" and 2", 3A
compliant Tri-clamp 316 stainless steel n / a Kynar®
Cable 35 m (115 ft) 3/4" NPT, 1" BSP,
11/2" BSP,
316 stainless steel
Kynar® ** 180 kg
(400 lb) Kynar®
PL-540 5

INSTALLATION
LOCATION
Installation shall only be performed by qualified personnel
and in accordance with local governing regulations.
This product is susceptible to electrostatic shock.
Follow proper grounding procedures.
The Pointek CLS 200 standard probe length is normally mounted into the vessel top (high
detection alarm) or through the tank wall at the detection level (high or low detection alarm).
The extended versions are designed for top mounting. The probe suspends vertically so that it
reaches into the process at the desired detection level (high or low detection alarm).
vertical angle horizontal
PL-540 6

DIMENSION
CLS 200 VERSIONS
sensor
thermal
isolator
245 mm ◆
(9.7") 120 mm
(4.8")
Standard with Thermal Isolator
probe*
sensor
5.5 m
(18 ft)
max
20 mm (0.8") Ø
probe*
145 mm ◆
(5.7")
extension
Standard with Extension
* wetted parts are Kynar®and 316 stainless steel.
◆nominal values
145 mm ◆
(5.7") 120 mm
(4.7")
1/2" NPT
probe /
sensor *
electronics /
enclosure
lid
Standard
120 mm
(4.7")
76 mm
(3")
59 mm
(2.3")
lid
clip
PL-540 7

98\03\30
sensor
extension
165 mm ◆
(6.5") 5.5 m
(10 ft)
max.
Sanitary with Extension
23 mm (0.9") Ø
probe*
* wetted parts are Kynar®and 316 stainless steel.
◆nominal values
165 mm ◆
(6.5") 100 mm ◆
(3.9")
1/2" NPT
probe /
sensor *
electronics /
enclosure
lid
Sanitary
sanitary
Tri-clamp
120 mm
(4.7")
76 mm
(3")
59 mm
(2.3")
lid
clip
PL-540 8

145 mm
(5.7")
nominal value
35 m
(115 ft)
max
1/2" NPT
probe *
electronics /
enclosure
lid
Cable
sensor
weight
sensor
20 mm
(0.8") Ø
cable ◆
flexible
extension *
* wetted parts are Kynar®
and 316 stainless steel.
◆ to set the sensor at the
desired alarm point, by
shortening the cable,
refer to Appendix \
Shortening the Cable
for the proper procedure.
120 mm
(4.7")
76 mm
(3")
59 mm
(2.3")
lid
clip
PL-540 9

MOUNTING
DO’S AND DONT’S
STANDPIPES
MULTIPLE UNITS
> 100 mm
(4") Ø
< 50 mm (2")
100 mm
(4") min
100 mm
(4") min
Sensors must be 100 mm apart. Mount diagonally if there is
not enough vertical space.
100 mm
(4") min
PL-540 10

DO’S and DONT’S (cont’d)
WALL RESTRICTION
50 mm
(2")
min
50 mm
(2")
min
PL-540 11

DO’S and DONT’S (cont’d)
PROCESS CONCERNS
protect probe from falling material
consider material angle of repose
tensile load must not exceed probe
or vessel rating
50 mm
(2")
min
avoid areas where material build up occurs
keep out of path of falling material
PL-540 12

INTERCONNECTION
identification label (underside of lid)
Loosen the lid clip and remove the lid.
All field wiring must have insulation suitable for at least 250 V.
Switch and potentiometer settings are for illustration
purposes only. Refer to Operation \ Setup.
Relay contact terminals are for use with equipment having no accessible
live parts and wiring having insulation suitable for at least 250 V.
Maximum working voltage between adjacent relay contacts shall be 250 V.
PL-540 13

RELAY OUTPUT CONNECTION
SOLID STATE SWITCH
98\03\30
Switch shown in de-energized state, K3 contact rated
for 250 V ac / 300 V dc, 100 mA max, non-polarized.
relay shown in de-energized
state, K2 contacts rated for
8 A at 250 V ac /
5 A at 30 V dc
solid state switch to customer’s
control or instrumentation device
PL-540 14

ANCILLARY 2-WIRE OUTPUT CONNECTION
POWER CONNECTION
12 - 250 V
ac / dc
output
optically isolated switch
customer supplied
V dc
refer to Power Connection
(Phoenix DEK-OE-5DC/48DC/100
or equivalent)
Nominal 24 V dc 48 V dc
V dc 22 – 26 V 46 – 50 V
R120 Ω234 Ω
PL-540 15

OPERATION
SET UP
Set up can be done in the field with the Pointek CLS mounted
into process, or in the shop prior to mounting.
Dip Switch 1
Set on to open the alarm relay immediately when the sensor detects a change in contact.
Use this setting when time is critical.
Set off to keep the alarm relay closed by the amount set on potentiometer #1 (P1).
Use this setting when you want to slow the response to account for turbulence or
false readings.
Dip Switch 2
Set on to open the alarm relay immediately when the sensor detects a change in
contact. Use this setting when you need the alarm to stop as soon as the contact
state changes.
Set off to keep the alarm relay closed by the amount of time set on potentiometer #1
(P1). Use this setting when you want to avoid false or early alarm relay cut outs due
to turbulence or false readings.
Dip Switch 3
Set on for fail-safe high alarm.
Set off for fail-safe low alarm.
Dip Switch 4
Set on to test the delay of the alarm relays as set by the potentiometer #1 (P1).
Set off for normal operation.
Dip Switch 5
Set on for normal sensitivity
on the sensor. Use this setting
in situations where you are
measuring dry solids or
non-conductive liquids.
Set off for low sensitivity
on the sensor. Use this
setting when you are
measuring conductive
liquids or wet conductive
solids which are likely
to build up.
delay ‘alarm off ’
fail-safe
delay test
sensitivity
delay, ‘alarm on’
switches shown in off position
PL-540 16

START UP
After the CLS is properly mounted and the switch bank set up, apply power to the unit. The
green LED (L3) lights to indicate the unit is powered and operational.
INDICATORS
The Pointek CLS uses three LEDs for visual indication of the following:
L1 (yellow), sensor status: when P2 is properly set, this LED is on when the sensor is
in contact with the process material (material capacitance
is greater than the setpoint, P2). L1 is off when the sensor
is out of contact with the process material (material
capacitance is less than the setpoint).
L2 (red), output status: this LED is an indication of the relay and solid switch
contact status. Refer to Operation \ Output Status.
L3 (green), power: this LED is on when the Pointek CLS is properly powered.
Proceed with the set up of the alarm output.
delay on delay off fail-safe delay test sensitivity
S1 - 1 S1 - 2 S1 - 3 S1 - 4 S1 - 5
on disabled disabled high test normal
off enabled enabled low normal low
PL-540 17

ALARM OUTPUT
ALARM OUTPUT STATUS
high
alarm
low
alarm
SETPOINT ADJUSTMENT
In order to assist you in properly adjusting the alarm setpoint for reliable and accurate
detection of the process material, we have categorized the materials and applications into
three cases. Follow the setup procedure associated to the case which covers your application.
Case 1:
this is the general case encountered in most applications, characterized
by the following: - dry solids
- low viscosity liquids
Case 2:
demand applications, characterized by the following:
- hygroscopic / wet solids
- high viscosity and high conductivity liquids
Case 3
: interface detection: - e.g. liquid A / liquid B, foam / liquid
PL-540 18

Case 1
Preamble: - insure that L3 (green) is ‘
on
’
- turn both potentiometers, P1 and P2, fully
ccw
(counterclockwise)
- set S1 switches 1 to 4 ‘
off
’ and S1 switch 5 to ‘
on
’ (normal sensitivity)
1. With sensor uncovered and a minimum 100 mm free space all around, turn P2 cw
until L1 (yellow) goes ‘
on
’.
2. Turn P2 ccw until L1 goes ‘
off
’.
Case 2
Preamble: - insure that L3 (green) is ‘
on
’
- turn potentiometer P1 fully
ccw
(counterclockwise), and P2 fully
cw
(clockwise)
- set S1 switches 1 to 4 ‘
off
’ and S1 switch 5 to ‘
off
’ (low sensitivity)
1. Adjust the material level of the process so that the sensor is immersed, L1 (yellow)
should be ‘
on
’. If L1 does not light, reset S1 switch 5 to ‘
on
’ (back to normal
sensitivity; the appropriate position of S1 switch 5 depends on the dielectric
properties of the material).
2. Adjust the material level of the process so that the sensor is uncovered , but retains
significant (as much as possible) build up of material on the sensor.
3. Adjust P2 ccw until L1 ‘
off
’.To get the true feel of the correct position, it is wise to
adjust P2 cw then ccw a couple of times to insure that L1 is
just
‘
off
’.
Case 3
Preamble: - insure that L3 (green) is ‘on ’
- turn potentiometer P1 fully
ccw
(counterclockwise), and P2 fully
cw
(clockwise)
- set S1 switches 1 to 5 ‘
off
’
1. Immerse the sensor in the material that has the lowest dielectric constant.
L1 (yellow) should be ‘
on
’. If not, S1 switch 5 should be set to ‘
on
’ (normal sensitivity).
2. Adjust P2
ccw
until L1 goes ‘
off
’.
3. Immerse the sensor in the material that has the highest dielectric constant,
L1 should come ‘
on
’.
trip
point
power
(green)
sensor
status
(yellow)
output
status
(red)
delay
switches
PL-540 19

DELAY
The alarm actuation can be delayed for either or both ‘on alarm’ and ‘off alarm’ conditions.
The selection is made by setting S1-1 and S1-2, refer to Set Up \ Switch Bank. The amount of
delay is adjustable from 1 to 60 seconds by setting potentiometer, P1.
After completing the set up, replace the Pointek CLS lid and lid clip.
The unit is now in service, providing level detection of your process.
PL-540 20