KOBOLD - Model KAL-K4440 - Calorimetric Flow Switch - Brochure

Electronic Flow Monitorfor Liquidsmeasuring•monitoring•analysingModel:KAL-...KAL-K...KAL-A (K)...1KOBOLD offices exist in the following countries:ARGENTINA, AUSTRIA, BELGIUM, BRAZIL, CANADA, CHINA, FRANCE, GREAT BRITAIN, ITALY, NETHERLANDS, POLAND, SWITZERLAND, USA, VENEZUELAKOBOLD Messring GmbHNordring 22-24D-65719 Hofheim/Ts.? (06192) 299-0Fax (06192) 23398E-mail: info.de@kobold.comInternet: www.kobold.com? Switching range: approximately 4 - 200 cm/s? Max. pressure: 100 bar(not possible with Tri Clamp)? Temperature of medium: - 20 to +80°COption: -30 to +120°C? Connection: G 1/4, G 1/2, G 3/4M12x1, 1/4 NPT, 1/2 NPT, 3/4 NPTTri Clamp? Material Sensor: stainless steel 1.4571? Intelligent temperaturecompensation? No moving parts? Minimal pressure loss01/0202/Ko/10Method of operationThe model KAL-... electronic flow monitor continuously monitors liquid medias. It is suited for securely monitoringflows with minimum pressure loss. Sensitivity to soiling is significantly reduced by means of a single-part sensor.Theory of operationThe operation of the model KAL-... electronic flow monitor is based on the calorimetric principle. The end face of thesensor is heated to a few degrees above the temperature ofthe flow medium. When the medium flows, the heatgenerated in the sensor is transferred to the medium, ie, thesensor is cooled. The cooling procedure is an accuratemeasure of the flow velocity.The sensor signal is compared with the reference data storedin a microcontroller. An alarm signal and/or an analoguesignal (4-20 mA) that is proportional to the flow velocity isoutput if the actual flow velocity deviates from the desiredflow velocity. The microcontroller allows the flow indicator tobe easily calibrated and the temperature to be compensated.Features? Optimal temperature compensation ? Intelligent switching ? Measuring range adjustment? No moving parts? Easy to fit and put into service? Minimal pressure loss? Easy to useTemperature compensationThe temperature of the KOBOLD flow monitor iscompensated with a microcontroller. All data required fortemperature compensation are stored in EEPROMS, and aremaintained for at least 10 years after power failure. Theinstruments may be easily adjusted by the customer to suitprocess conditions. The measured flow rate is compared with the zero-pointadjustment values stored in the EEPROM and the storedcharacteristic curves. The data is processed by themicrocontroller and controls the alarm signal or the analogoutput. The sensor switch point is absolutely consistent, as thesensors has been adapted to suit the process data.Range of modelsCompact devicesKAL-A... Flow meter with analogue output (4-20 mA)KAL-AK Flow meter /-monitorwith analogue output (4-20 mA)and alarm signal (PNP/NPN, make contact)KAL-K... Flow indicatoralarm signal (PNP/NPN, N/O contact)2 No responsibility taken for errors; subject to change without prior notice.Drift of the switch point by temperature influenceSchaltpunktveränderung über TemperaturSwitch point (m/s)KAL-... with compensationStandard withoutcompensation 020 30 40 50 60 70 802Temperature (°C)Measuring/switching rangesElectronic Flow Monitor for Liquidswww.kobold.com 01/0202/Ko/10NW(mm)Appr. meas. rangeL/min waterNW(mm)Appr. meas. rangeL/min water8 0.12 - 6.0 40 3.0 - 15010 0.19 - 9.4 50 4.7 - 23515 0.42 - 21.8 60 6.8 - 34020 0.75 - 37.7 80 12.0 - 60325 1.18 - 59.0 100 18.8 - 94230 1.7 - 84.8 150 42.4 - 2120Important: The flow velocity has been converted for the nominal pipe size forthe specified measuring ranges. Please note that the flow velocity approacheszero in the pipeline in the direction of the wall. Depending on the nominal pipesize, depth of engagement of the sensor, and flow profile, the deviations fromthe specified flow rates can be of considerable magnitude.Order code for material1.4571Connection Type of contact Power SupplyTri Clamp, DIN 32676 KAL-K4440Order Details (Example: KAL-K4440 S PG 3) Technical detailsElectronics:Power supply: 24 VDC ±10 %110 VDC ± 30 %, 110, 230 VAC ± 20 %,Power input: max. 4.5 (typically 1.2 W)max. 3.6 W for 24 VDCAmbient temperature: - 20°C to +60°CTemperature of medium: - 20°C to +80°C-30 °C to +120 °C (High temp. version)CIP compatibility: max. 140° C non-operatingMax. pressure: 100 bar (not possible with Tri Clamp)Response time: max. 12 sSwitching range: approx. 4 cm/s to 200 cm/sTemperature gradient: unlimitedResponse time: typically 5.6 ...12 supon request: 2 - 5.6 s (KAL-KS...)Flow rate indication: trend indication with 8-LED’sSwitch point adjustment: with potentiometer, optical indication on LED chain with flashing LEDOutput indicator: LED, red= alarm,green= flow OKElectrical connection: code PG: cable gland M16x1,5; code ST: plug M12x1 (only 24 VDC version);code SK: circular plug 7/8" incl.socket 230/115 V version orcode SK: plug M12x1 incl. socketand 2 m cable (24 VDC version)Electrical connectionVersionStandardversion(-20 to +80°C)Switch output: 24 VDC version: semiconductorPNP/NPN switchable,max. 400 mA, short-circuit proof110 VDC version:relay max. 0.2 A /110 VDC110 VAC, 230 VAC version:relay max. 5 A N/O function: actual value = setpoint value;(standard setting: green LED is energized) output switched throughN/C function: available as optionProtection: IP 65Case material: polyamide3No responsibility taken for errors; subject to change without prior notice.Flow Monitor Compact Version Model KAL-KS=N/O(NPN/PNPswitchable)O=N/C(Option)PG=cable gland M16x1,5ST*=connector M12x1SK=circular plug incl. socket0 = 230 VAC1 = 110 VAC3 = 24 VDC6 = 110 VDCTri Clamp, DIN 32676 KAL-KH4440Version for hightemperature(-30 to +120°C)S=N/O(NPN/PNPswitchableO=N/C(Option)PG=cable gland M16x1,5ST*=connector M12x1SK=circular plug incl. socket0 = 230 VAC1 = 110 VAC3 = 24 VDC6 = 110 VDCwww.kobold.comPlease refer to our brochure 5 for other versions of KOBOLD flow monitors KAL- .*only for 24 VDC01/0202/Ko/10Electrical connectionKAL-A... KAL-AK...Technical detailsPower supply: 24 VDC ± 20 %Power input: max. 3.6 W (typically 1.2 W)Ambient temperature: - 20°C to +60°CTemperature of medium: - 20°C to +80°CMax. pressure: 100 bar (not possible with Tri Clamp)Response time: max. 12 sMeasuring range: approx. 4 cm/s to 200 cm/sTemperature gradient: unlimitedResponse time: 5.6 to 12 sAccuracy: ± 10 % of measured valueRepeatability: ± 1 % of measured valueSignal output: 4-20 mAFlow rate indication: Trend indication with 8-LED’sProtection: IP 65Case material: glass-fibre-reinforced polyamideFor KAL-AK...onlySwitching function: N/O contactSwitch point adjustment: with potentiometer, optical indication on LED chain with flashing LEDOutput indicator: LED, red= alarm,green= flow OKSwitching output: semiconductor, PNP/NPN switchable, max. 400 mA, short-circuit proof4 No responsibility taken for errors; subject to change without prior notice.Flow Meter/Monitor Compact Version Model KAL-A(K)Order Code for Material1.4571Connection Electrical ConnectionTri Clamp, DIN 32676 KAL-A4440A4Order Details (Example: KAL-A4440A4 PG) Output/Contact4-20 mA without contactPG=cable gland M16x1,5SK=connector M12x1Tri Clamp, DIN 32676 KAL-AK4440AS4-20 mA Contact N/O NPN/PNP switchPG=cable gland M16x1,5SK=connector M12x14...20 mA+24 VDCGround4...20 mA+24 VDCGroundPNP/NPN-switch1231234Ø 70ca. 110ca. 16581Ø 50,4DimensionsKAL-...4440 with Tri Clampwww.kobold.comPlease refer to our brochure 5 for other versions of KOBOLD flow monitors KAL- .01/0202/Ko/10