KFS-EM. Overall length. Al. PTFE coated Alu, painted Al. coated Methacrylate / acrylic nitrite

Transcription

1 KFS Flap Flow Meter KFS suitable for H, acids, alkalis and gases spring-loaded horizontal or vertical flow direction low pressure loss mainly viscosity independent optional threshold value contacts optional analogue outlet 4- ma Design and area of use The KFS is manufactured in two versions. The basic device with a special steel display housing and as an option with an electrical outlet in an aluminium display housing (). The meter mainly works viscosity-independence and is suitable for the displaying of water, acid, alkali and gas flows. Each of the devices is calibrated in accordance with customer requirements and is provided with a measuring substance-specific scale. For process control, the meter can be equipped with threshold value contacts or a transducer with an electrical outlet. A semi-circular plate is mounted on a swivelling axis situated in the mm thick ring. Depending on the flow amount, the angle between the flap and the ring and a magnetic coupling which is protected against tearing off transmits the movement to an external display. Materials Ring Material Cast Iron Steel Special steel Rubberised steel PVC PP PVDF Display Unit Scale housing Needle Scale Dial / Seal other parts in contact with measured materials KFS Special steel 1.41 Al. painted Al. coated PMMA, optional glass DN Al. PTFE coated Alu, painted Al. coated Methacrylate / acrylic nitrite KFS Technical Data Measuring accuracy Scale Scale length Type of protection KFS housing Corrosion protection for steel version Steel/special steel versionl 1) optional PVC version 1) PP version 1) PVDF version 1) Overall length Connections optional % FS in phy. units, e.g.: l/h, m³/h max. KFS 9 mm max. 9 mm min. 1 : KFS based on IP 6 IP6 Epoxy resin varnish burned in, colour blue RAL - 70 C C PN 6/ PN 16/2/ 1) The measured material is not to freeze 0 C... + C at bar 0 C... + C at 6 bar PN 6/ 0 C... + C at bar 0 C C at 1, bar PN 6/ - C... + C at bar - C C at 2 bar PN 6/ Standard: mm rubber version or special spring: 60 mm rubber version and special spring: 70 mm mounted between the pre-welded flange in accordance with DIN 21 in accordance ANSI, JIS Fon +49 (0) Fax +49 (0) info@kt-web.de Ver 2.0

2 Measuring Ranges and Pressure Losses with Regard to H 2 O and Air DN H 2 O m 3 /h max. pressure loss in hpa air m 3 /h i.n. max. pressure loss in hpa Weight in kg Ring PVC Weight in kg Ring V4A 2 0, , 32 1, , , 4, ,1 3, , ,, ,7 6, , ,3, ,7 11, , , on enquiry , - on enquiry on enquiry - - 4, Air measuring range at 0 C and 13 hpa. s for other measured materials and operating conditions upon request. Special Measuring Ranges DN m 3 /h H 2 O Overall length: 60 mm; overall length rubberised steel: 70 mm; Additional data on enquiry Options IK threshold value contact with inductive slit proximity switch, optional explosion protection. The needle in the meter activates the inductive contact fitted into the display housing by means of a metal flag. The threshold value contact can be adjusted within the complete measuring range. A maximum of 2 IK contacts can be mounted in a KFS. The contact position is shown on the meter scale by means of a needle. IK 1 IK 2 Supply voltage Nominal operating voltage Power consumption active area free active area covered Ambient Incorrect polarity protection PTB certificate of conformity Inductive slit proximity switch in accordance with NAMUR DIN opener / closer depending on the relay switching V DC via circuit breaker amplifier KFA 6 Ex (optional) nominal,2 V DC 3,2 am 1 am -2 C C yes PTB-No. Ex-6/2177x

3 IKS threshold value contact with inductive slit proximity switch for SPC control systems The needle in the meter activates the inductive contact fitted into the display housing by means of a metal flag. The threshold value contact can be adjusted within the complete measuring range. A maximum of 2 IKS contacts can be mounted in a KFS. The contact position is shown on the meter scale by means of a needle. The IKS version is especially suitable for the direct connection to SPC control systems. IKS 1 IKS 2 Switching voltage Constant current I A Idling power consumption Ambient Explosion protection Inductive slit proximity switch opener / closer depending on the relay switching - V DC 0 ma ma - 2 C C no RK threshold value contact with reed contact The KFS flow meter can be equipped with an electrical RK threshold value contact as optional for the flow monitoring and control. The threshold value contact can be adjusted within the complete measuring range. RK 1 RK 2 Switching voltage Switching current Consumption Ambient Reed contact floating opener or closer max. 1 V AC / 0 V DC max. 0,2 A max. VA, 3 W -2 C... + C

4 The Hal-Sensor The Hal-Sensor is a position transducer with a microprocessor. The instrument uses the Hall effect to capture the field of a magnet. This signal, after the micro-controller processing, is converted to a 4- ma signal proportional to the flow rate. NOTE: Do not unscrew or remove the magnet or the circuit board, because it could affect the calibration. EM The EM works as a two-wire system. It is a 4 to ma transmitter proportional to flow rate. 4 ma corresponds to beginning of the scale. ma corresponds to full scale. Between the beginning of the scale and the first point of the scale the analogue output is constant at 4 ma, to avoid false readings of flow rate. GENERAL WIRING Before starting the electrical installation, make sure that the cable gland of the connector is the right size for the cable to be used. This will guarantee that the instrument is perfectly sealed (it is recommended the use of shielded pair wiring with an exterior diameter between and mm. The 1 2 J4 ma Power supply to Vdc section of the cables inside will be 0,2 or 0, mm2). A twisted pair wiring should be used to avoid electrical interferences in the 4- ma loop. In some instances, shielded cable may be necessary. Before connecting the power supply, you must be sure that the supply voltage is the correct for the installation. 2-WIRE CONNECTION Power supply and analogue output The connection is made in the connector J4, with the negative terminal of the power supply in the position 1 and the negative terminal of the load in the position 2. The positive terminals of the power supply and the load are connected together. The instrument works in a 2-wire system, that is, the supply and signal line is the same. Technical Characteristics Power supply Minimum voltage: 0.02 Z + ( Volts ) (Z is the load in the loop in Ω) Maximum voltage: Vdc Consumption: maximum ma Outputs Analogue output: 4 - ma, factory calibrated Maximum load in the 4- loop: 2 kω (at Vdc supply voltage) General Characteristics Protection: IP-6 Ambient range: - to +70 ºC Precision (analogue output respect the magnet position): < 0.6 % Compliance with Directive 73 / 23 / CEE Norm EN 6-1 Compliance with Directive EMC 9/336/CEE Norm EN 01-1 Norm EN 02-2 Additional devices For additional electrical equipment for remote displaying and controlling such as analogue displays, digital displays, recorders, PID controllers, threshold value monitors and contact protection relays, refer to the separate price list.

5 Dimensions KFS Version m 3 /h H O 2 D : 1 kg/l T : C P : 2 bar V : 1mPa s Typ : Prall A-Nr. : TAG-Nr. :AIF 34 RP 4 Version DN 6 PN 16 Wasser 1kg/l AIF mPas C A.-Nr mm m /h DN 2 1) 32 1) d A (KFS) A (KFS- EM) , , , , ) Request separate drawings for the PVC / PP / PVFD versions. All dimensions in mm The KIRCHNER devices are tested in accordance with the pertinent EC-CE directive. Upon request, we are able to provide you with a corresponding declaration of conformity. The KIRCHNER QM system is certified in accordance with DIN-EN-ISO A systematic quality improvement is continuously carried out in the form of continuous adaptations to the ever-increasing demands.