Kobold KAL Operating Instruction

Page 1
Operating Instruction
for
Calorimetric Flow Monitoring Device
Model: KAL
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1. Contents........................................................................................................2
2. Note ..............................................................................................................3
3. Instrument Inspection....................................................................................3
4. Regulated Use ..............................................................................................4
5. Operating Principle .......................................................................................5
6. Mechanical Connection.................................................................................5
7. Electrical Connection ....................................................................................6
8. Limiting Contacts ..........................................................................................6
9. Alignment / Balancing ...................................................................................7
10. Commissioning ...........................................................................................10
11. Maintenance ...............................................................................................10
12. Fault Signalling ...........................................................................................11
13. Technical Information..................................................................................11
14. Order Codes ...............................................................................................12
15. Dimensions .................................................................................................13
16. Declaration of Conformance .......................................................................14
Manufactured and sold by:
Kobold Messring GmbH
Nordring 22-24
D-65719 Hofheim
Tel.: +49(0)6192-2990
Fax: +49(0)6192-23398
E-Mail: info.de@kobold.com
Internet: www.kobold.com
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2. Note
Please read and take note of these operating instructions before unpacking and setting the unit for operation, and follow the instructions precisely as described herein. The devices are only to be used, maintained and serviced by persons familiar with these operating instructions and with the prevailing regulation applying to procedural safety and the prevention of accidents.
By usage in machines, the measuring unit should be used only then when the machines fulfil the EWG-machine guide lines.
PED 97/23/EG for KAL-11.. and KAL-12..
In acc. with Article 3 Paragraph (3), "Sound Engineering Practice", of the PED 97/23/EC no CE mark. Table 8, Pipe, Group 1 dangerous fluids
3. Instrument Inspection
These devices are checked before dispatch and sent away in perfect condition. Should the damage to a device be visible, we recommend a thorough inspection of the delivery packing. In case of damage, please inform your parcel service/ forwarding agent immediately, since they are responsible for damages during transit.
Scope of delivery:
probe with 2 m PVC as standard
Electronic setting system
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4. Regulated Use
The KAL is to be installed only in the specified applications. Every usage which exceeds the specifications is considered to be non-specified. Any damages resulting therefrom are not the responsibility of the manufacturer. The user assumes all risk for such usage. The application specifications include the installation, start-up and service requirements specified by the manufacturer.
Devices from the KAL model series are used for the monitoring of liquid flow.
Limiting relay
The devices are equipped with limiting relays for monitoring the flow speed of liquids (KAL-E1...-E3).
Trend display
An LED bar display shows the current flow value and the set switch point via a flashing LED (only on models KAL-E2... and KAL-E3...).
Probes
Probes are available in two options: as a screw-type or in-line version.
Model KAL devices are always made up of two structural components
Probe
Electronic setting system
The devices may only be used for liquids to which the probe housing materials are resistant. With proper installation and maintenance, the probes display no sensitivity to soiling and cause practically no pressure loss.
Materials
KAL-11... Brass material KAL-12..., KAL-23..., KAL-53... St. steel material 1.4301 KAL-24..., KAL-54... St. steel material 1.4571
Setting ranges in relation to nominal tube diameter
ND (mm) Range (l/min) water ND (mm) Range (l/min.) water
8 0,12 - 6,0 40 3,0 - 150 10 0,19 - 9,4 50 4,7 - 235 15 0,42 - 21,8 60 6,8 - 340 20 0,75 - 37,7 80 12,0 - 603 25 1,18 - 59,0 100 18,8 - 942 30 1,7 - 84,8 150 42,4 - 2120
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Attention! For the measuring ranges gives the flow speed was converted to the nominal tube diameter. It should be noted in line with this that in the tube towards the wall section the flow speed approaches 0. Depending on nominal tube diameter, screw depth of the probe and flow profile, occasional deviations, some of them considerable, may result.
5. Operating Principle
The all-metal design electronic flow monitor device functions according to proven calorimetric principles. The measuring probe is heated up a few degrees from the inside outwards in relation to the flow medium which it is penetrating. If the medium is flowing then the heat produced in the probe is carried away by the medium, i.e. the probe becomes cooler. This cooling represents a measuring of the flow speed. The electronic setting system compares the desired flow speed with the actual speed and activates an output relay when the desired value is not reached. By the use of a micro-controller, simple calibrations is made possible. In this way optimum temperature compensation can be achieved.
6. Mechanical Connection
Before installation:
Ensure that the actual flow quantity corresponds to the setting range of the
device (i.e. to the flow speed).
Ensure that the permitted maximum operating pressure and temperatures for
the device are not being exceeded. (See point 13 Technical Information)
Installation:
Mount the sensor in the pipe (KAL-1...)- in a sleeve welded to the pipe (KAL-2...).
Fitting position:
The function of the sensor is not dependent on their fitting position, provided that the pipe is completely filled with flow medium. The place where the sensor are fitted must be free from turbulence in the medium. (4x pipe section in front of and behind sensor). If the medium is likely to cause any deposits in the tube, then an appropriate fitting position alongside is recommended.
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7. Electrical Connection
Warning! Ensure that the voltage values of your installation correspond to the voltage values given on the device´s specification plate.
Make sure that the electrical power supply is off.
Connect the sensor cable to terminals 6 & 8 on the setting system.
Connect the power supply (voltage supply) to terminals 15 & 16.
Temperature relay only on models KAL-E3. The relais are illustrated in fallen state.
AC voltage supply 220 VAC, 110 VAC, 24 VAC +/- 10%, 50-60 Hz
DC voltage supply 24 VDC + 15%, - 10%
8. Limiting Contacts
Only on KAL-E1.../KAL-E2...
1x change - over relay for flow speed
Only on KAL-E3...
1x change - over relay for flow speed 1x change - over relay for temperature
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9. Alignment / Balancing
Initial operation:
9.1. Fit sensor in pipe (ensure correct fitting location, see point 6 Mechanical Connection).
9.2. Connection sensor cables to electronic circuitry (see point 7 Electrical Connection).
9.3. Fill pipe with flow medium.
Caution! There must be no air bubbles on the sensor. Flow speed must be at 0.
9.4. Commission electronic circuitry (switch on supply voltage)
9.5. Only on model KAL-E-3...Set temperature potentiometer (2) to left-hand stop.
9.6. Zero point alignment. Briefly activate the "SET"key (5) (using a suitable object e.g. ball point pen)
9.7. "Flow" LED (6) flashes for about 30 seconds. After this time the "Flow"LED goes off (6). The device is now operational., continue with point 9.9.
9.8. In case of malfunction the "Flow" LED flashes continuously. Press the"SET" key once again. Device will switch back into measuring mode. Check mechanical and electrical installation and recommence operational procedure from point 9.4.
9.9. Switches on installation and set maximal flow.
If the flow speed is significantly less then 2 m/s, then on the trend display (3) there will be possibly fewer then 8 LEDs on.
It is now possible to extend this display (3) to the full range (8 LEDs). This can only be successfully achieved, however, if the flow speed is somewhere between 0,25-1,8 m/s.
Set "Flow" potentiometer (1) (see illustration) to right-hand stop
(only on KAL-E3...; Set temperature potentiometer to left-hand stop)
Briefly activate SET key (5)
Flow LED (6) will flash for 30 seconds. After this time the Flow
LED will go 30 off.
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It is possible at any time to reset the electronic circuitry to the full range
Flow potentiometer (1) at right-hand stop
(Only on KAL E3; Temperature potentiometer (2) to left hand-
stop)
Press the SET key (5) and hold in position until the FLOW LED
stops
The device has now been reset into basic functioning mode.
The device is now adjusted to your medium. You can now set your switch point. (In case of malfunction see point 9.8)
9.10. Set operational flow.
Switch point setting: Model KAL-E-1...
The further the Flow-potentiometer (1) is turned to the left, the lower the switch
point.
The further the Flow-potentiometer (1) is turned to the right, the higher the
switch point.
Switch point setting: Model KAL-E-2.../E-3...
Set Flow-potentiometer (1) to left-hand stop. The first LED on the luminous
display (3) will flash. Any number of LED´s on the luminous display will be continuously illuminated.
Turn "Flow" potentiometer (1) to the right until the desired switch point is
reached. The current switch point will be displayed by a flashing LED.
Display 3
XXXXX
Flashing flow speed
XXXXXX
LED display flashin Explanation Result
XXXXXX
flow>switch point Flow relay pick-up made
Flow LED illuminated
XXXXXX
flow>switch point LED Flow relay pick-up made
flashes at double frequency
Flow LED illuminated
XXX ö
Flow<switch point Flow LED off
Flow relay open
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Only KAL-E-3...
with more than 10 m cable between sensor and electronic circuitry, as well as increased accuracy when measuring temperature.
Temperature alignment
Caution! Disconnect from power supply.
Connect full length extention cable (>10 m) (terminals 6&8)
Connect 100 Ohm ±1% resistor (part of delivery package) in place of
sensor at the end of the instrument leads.
Set temperature potentiometer (2) at 80° C (right - hand stop).
Reconnect power supply and switch device on.
Briefly press SET key (5).
The temperature LED will flashed and switch off again after approx. 10
seconds. In case of malfunction, see point 9.8, Initial operation. If the temperature LED flashes more quickly, this could be caused by the fact that the probe is connected instead of a 10 Ohm resistor.
Remove the 100 Ohm resistor and replace the sensor.
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10. Commissioning
The use of this meter in machines acc. to directive 89/392/EWG is prohibited until the complete machine complies to this directive.
Illustration KAL- E3 ...
11. Maintenance
The device requires no maintenance. The sensor be checked at monthly intervals for deposits (limescale etc.) and cleaned where necessary.
(1) Potentiometer Setting of flow switch Zero point alignment-turn to left-hand stop
-Extending measuring range
-turn to right-hand stop
(2) Potentiometer Setting of temperature switch point (only KAL E3)
(3) LED trend display for flow speed and switch point
(4) LED temp is illuminated when operational temp. is below the set temp. limit value.
(5) SET- key (for alignment: extending measuring range)
(6) LED-Flow is illuminated when flow is greater then set switches point.
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12. Fault Signalling
When the alarm functions, the flow relay is released. This happens in the following cases:
Actual value < Desired value
Short - circuit
Line break
Power failure
13. Technical Information
Sensor
Materials
Housing: 1.4301 cable: PVC cable screw fittings: Nickel - plated brass: PG 7 cable: Length=2m, max. length 100 m
(can be extended by customer) Number of Leads=2 Lead cross section = 0,56 mm²
AWG 20, flexible cord Setting ranges: 4 cm/s ... 200 cm/s Medium temperature: -20° C to 80 °C
(Option: KAL-...HT-20...+120 °C max. pressure: 100 bar
Caution! KAL 1132 and 1140 max. 25 bar
Protection (EN 60529): IP 68
Electronic system
Power draw: max. 3,6 Watts Breaking capacity: max. 250 V, max 3 A Switch point alignment via potentiometer Switch function: Relay pick-up is made during flow,
(terminal 9 & 10 closed, LED lit)
Option (KAL-E3): Relay pick-up
is made in case of temperature shortfall,
LED lit (Terminals 12&13 closed) Output: Relay with 1 change-over contact Switch status display: LED
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Stand by time: max. 13 s Temperature range: -25... +80 °C Top hat rail mounting: DIN EN 50022 and DIN 46277 Housing protection: IP 40 Terminal protection: IP 20 Material Polycarbonat Sensor output: Short-circuit proof Cable break or short circuit: Recognised as break in flow,
Flow LED will flash.
Power failure: Calibration data retained for 10 years
No Battery Trend display approx. 10% Consistency: ca. 1% Reaction time: generally 5 sec., max 12 sec. Accuracy of temperature limit: ± 2 °C
14. Order Codes
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15. Dimensions
ABCD ABCDE
M12x1 SW 19 23 43 G 1/4 SW 27 10 50 81
G 1/4 SW 19 26 43 G 3/8 SW 27 10 50 81 G 1/2 SW 27 43 58 G 1/2 SW 27 10 50 81 G 3/4 SW 32 43 58 G 3/4 SW 32 15 52 82,5
G 1 SW 39 15 56 85 G 1 1/4 SW 46 15 50 90 G 1 1/2 SW 55 15 50 92,5
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16. Declaration of Conformance
We, KOBOLD-Messring GmbH, Hofheim-Ts, Germany, declare under our sole responsibility that the product:
KAL-E1... KAL-E3 Calorimetric flow monitoring device
to which this declaration relates is in conformity with the standards noted below:
EN 50081-1
EMC General Emission Requirements
EN 50082-2
EMC General Immunity Requirements
EN 61010
Safety requirements for electr. equipment for measuring, control and laboratory use.
Also the following EWG guidelines are fulfilled:
89/336/EWG
73/23/EWG
Signed: date: 30.09.02
H. Peters M. Wenzel
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