1. APPLICATION 2. TECHNICA
Contents
1. DT 277 V AC 5 A Process connection 1 BSPT 1 NPT mounting plate 230 V AC 15 9 VA 24 V AC 15 11 VA T pfesz lts g 115V AC 15 9 VA 24V DC 15 11W Electric connection Cable gland M20 x 1 5 screw terminal 2 5 mm2 cable 10 14 mm Ep A 0408 Electric protection Class a Ingress protection Electronic housing material Paint coated aluminium Dust Ex protection ATEXIDT100 C SATEXII DTI0O C O o O 4kg extension 0 1 kg m 2 2 ACCESSORIES User s Manual Declaration of Conformity Warranty sheet Gasket for mounting plate 2 3 ORDER CODE NOT ALL COMBINATIONS OF ORDER NUMBERS ARE POSSIBLE nivorota EL J LILLIE FUNCTION CODE VERSION PADDLE CONNECTION CODE VERSION CODE CODE INSERTION CODE POWER SUPPLY EX CODE Switch K Standard 1 x 1 4571 1 2 BSPT Standard 4 02 0 2m 1m 10 230 V AC High temp switch H Standard 3 x 1 4571 mounting p Fault ind 5 03 0 3 m 2m 20 115 VAC Standard 1 x plastic 172 BSPT 3m 30 24 V AC Standard 4 x plastic mounting p 24V DC Cable 1 x 1 4571 1 2 BSPT 230 V AC Ex Cable 3 x 1 4571 mounting plate 115 V AC Ex SPDT single pole double throw 24 V AC Ex EDO 5010724 V AC DC 15 11 VA W 24 V DC Ex 2 4 DIMENSIONS EKH 403 EKF 403 EHO O O O EKK 410 420 430 STANDARD VERSION WITH FLEX 3 A MULTIPLE VANE WITH FLEX COUPLING COUPLING CABLE E2. NTENANCE REPAIR NIVOROTA devices do not require maintenance on a regular basis In some instances however the unit may need a cleaning from deposited material Repairs during or after the guarantee period are effected at the Manufacturers The equipment sent back for repairs should be cleaned or neutralised disinfected by the User 8 STORAGE CONDITIONS Ambient temperature 35 C to 60 C Relative humidity max 98 9 WARRANTY All NIVELCO products are warranted to be free from defects according to the Warranty Sheet within two 2 years from the date of purchase ekh4021a0600h_01 July 2003 Nivelco reserves the right to change technical specifications without notice
3. Thank you for choosing NIVELCO instrument We are sure that you will be satisfied throughout its use NIVOROTA ROTARY PADDLE SWITCH 1 APPLICATION NIVOROTA E rotary level switch series of robust design can be used for detecting level of lumpy or powdery materials and granules Mounted to tanks silos and hoppers it can monitor and control level filling and emptying of stored materials such as stone fly ash sand coal feed beet slice etc A small power electric motor drives the paddle which rotates freely in the absence of the material When the paddle is impeded by USER S MANUAL the material reaching it the motor will be switched off the same time triggering a dry contact control switch When the material level drops the paddles run free again the motor is reactivated and the control switch returns to its original position 2 TECHNICAL DATA 2 1 GENERAL DATA STANDARD TRUE FAIL SAFE EkKO 400 eHO 400 ekO soOo Intrusion length Standard unit 200 mm Extended version max 3 m Material and number of the vanes Stainless steel DIN 1 4571 1 3 plastic 1 4 Material of the wetted parts Galvanised steel stainless steel plastic glass reinforced epoxy Material density min 0 08 kg dm Material temperature 40 C 90 C 40 C 400 C ance 499 0g 40 C 4400 C air purged air purged Material pressure max 2 bar Ambient temperature 40 C 65 C SPDT 250 V AC 15 A SPDT 277 V AC 5A Fault output SP
4. XTENDED VERSION AND MOUNTING PLATE HIGH TEMPERATURE VERSION EKH 402 STANDARD VERSION max 3 0 m mouting plate 2 5 ACCESSORIES 152 lt gt 70 PEUR 4 SINGLE VANE PLASTIC PADDLE SINGLE VANE STAINLESS STEEL PADDLE THREE VANE STAINLESS STEEL PADDLE FOUR VANE PLASTIC PADDLE 6x 8x177 8 O o o 1 Cable extension can be cut to the customer length required L 0 8 1 8 2 8m Fitting should be used for stub 1 14 NPT on the vessel MOUNTING PLATE 3 ARRENGEMENT CABLE EXTENSION FITTING The unit should be saved from strong material flow by appropriate selection of the installation place or by shelter Location with the less mechanical vibration is preferred minimum distance of the shelter 150 mm half pipe shelter plate shelter PROTECTION OF A LoW FAIL SAFE UNIT BY SHELTER 4 INSTALLATION For customisation of the cable extension the two bolts on the cable bond should be loosened After removing bound the cable can be cut to the required length There are two ways for the installation of the unit If the place of the installation can be accessed from inside of the tank then after removing the rotary paddle the unit should be screwed in a 1 BSP stub mounted on the roof or wall of the vessel Lastly the paddle should be reassembled on the shaft In a lot of cases however vesse
5. ls are not passable i e the rotary paddle can not be reassembled from inside of the tank Single Vane paddles can be inserted through the hole of a 1 2 BSP stub Multiple Vane paddles should be mounted to the 1 BSP screw connection of the mounting plate above The assembly of rotary paddle and mounting plate should be using bolts and sealing gasket installed on the vessel with proper opening to push the paddle through 5 WIRING c noj o NC S sense output lelolo motor swith off connector empty Ur EKO 400 Standard version NC C NO NC C NO fault output connector sense output Ut connector C EKO 500 True fail safe version PROPER IMPROPER 6 START UP OPERATION After installation and wiring if powered up the unit is fully operational If the paddle is rotating free the green LED on the cover of the type EKO 500 will be lit When the material reaches the paddle impeding it the switch will be triggered and the LED turns to red Material leaving the paddle behind due to emptying the motor will be reactivated the paddle starts to rotate and the LED turns to green again Improper selection of the paddle Single Vane can cope with high density and lumpy solids while light and small density materials require Three or Four Vane paddle may result in malfunction i e paddle rotating in the material and not triggering the switch in spite of material reaching the level to be detected 7 MAI
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