Magnetic Float Switch. Series 137. Level Measurement & Control Solutions

Transcription

1 Level Measurement & Control olutions Magnetic Float witch eries 37 OPERATING PRINCIPLE: FEATURE: Modular construction.... witch module. 2. Flange module. 3. Float module. This means it gives flexibility with unlimited switch combinations to suit individual needs. N N Available in Electric On/Off and pneumatic proportional. Electric witch available in Flameproof version also. Available with fixed or adjustable differential. The float movement of the level switch is transmitted through a solid non magnetic wall by the repulsion of like High temperature version available. All wetted parts in stainless steel. magnetic poles. This ensures that the float magnet imparts a snap action to the electric or pneumatic switch elements. Different types of Float Chambers available. details refer LF For `.B.E.M.' level switches are absolutely leak proof & not subject to material fatigue due to gland less design.

2 WITCH MODULE: selection depending on application : Output required : electric or pneumatic Required action / function : Alarm annunciator, Motor starter or Pneumatic Proportional valves of enclosure to meet environmental conditions Flame Proof or Weather Proof: IP 65 / IP 67 Max. operating temperature inside vessel / tank for high temperature stand off Code Output Terminal Configuration. Enclosure Material of Construction Degree of Protection Max. Ambient temp. Max. Operating temp. EA Electric /. C/O contact position with microswitch Pole Die cast Aluminium IP 65 0º C to 70ºC 0º C to 80ºC EY Electric On/Off Flameproof C/O contact position with 2 microswitches Pole Die cast Aluminium grade LM 6 IP 65 0º C to 70ºC 0º C to 80ºC H High Temp tand-off with Electric /. For high temp.stand off sleeve- Cast Aluminium IP 65 0º C to 70ºC -20ºC to 300ºC 40 Operating pressure : 30 Kg/cm2 (wet side) Contact rating : 5 Amps 230 VAC Resistive, (standard) pecial execution on request: )IP 67 2)Operating temperature up to 300 C 3)Contact rating 0A@ 230VAC 4)ilicon bellows 0 Code PNP Output E - Exhaust Port 2 - Input Port.4 Kg/cm Pneumatic air pressure C - Controlled output port 0 0 Proportional Aluminium 0-70 C C to.0 Kg/cm E C Input/Output Diagram and Pressure Ratings E Enclosure Material Of Construction Max Ambient Temp Max Operating Temp 92 C

3 FLANGE MODULE: selection depending on : tandard mounting flange Flange / nozzle mounting to ANI. Tank Code F tandard mounting square flange 92 ø 4 Holes 4 on 92 PCD Mounting Face Bore ø 66 Min Material Of Construction tainless steel casting AII 36 Mounting Details Direct mounting tank opening Min.- ø 66 mounting holes to suit - M 2/ /2" BW A lip on flange to suit side and top b a L mm Bore ø 66 Min a - sealing flange (fabricated) AII 36 b - slip on flange. carbon steel passivated sealing flange. lip on flange nozzle mounting range 2 /2" NB to 6" for ANI, NB L max. 2 ½",3" 70 4",5" 80 6" 90 ORDERING CODE: High Temperature tand off 0- Not Required H- Required (only with electric On/) Output PNP-Pneumatic Proportional Output tandard Mounting Flange F-tandard quare Flange lipon Flange tandard A ANI tandard Electronic On/ Off witch Housing -EA Aluminium -EY Flameproof Aluminium Changeover Contact. One (PDT) 2. Two (2 X PDT) Degree of protection 5 IP-65 (TD) Cable Entry ize F 3/4 UNF (F) T ½ NPT (F) ize Of lipon Flange - tandard square flange 2 2/2 (65 mm) NB 3 3 (80 mm) NB 4 4 (00 mm) NB 5 5 (25mm) NB 6 6 (50 mm) NB Float Assembly - tandard float assembly H- tandard Float with- Extension A- Adjustable Extension Z- Z extension. Extension Length Extension length L in mm Bellows. Nitrile Rubber:0ºC to 00ºC 2. Viton Rubber :0ºC to 200ºC ORDERING EXAMPLE MODULE CODE. Model Code: H - E A 2 5 F A Float switch with Electric /, enclosure of aluminium with high temperature standoff having IP 65 degree of protection with 2 changeover contacts & 3/4 UNF Cable entry. tandard quare Flange, with a tandard Float Assembly & Extension Length L= 300mm. 2. Model Code: - - E A 2 6 T A Z Float switch with Electric /, aluminium housing with IP 65 degree of protection with 2 changeover contacts & ½ NPT Cable entry. 6 ANI slip on flange, with a Z-type Float Assembly &extension length=200mm with nitrile rubber bellows. 3. For PNP Model Code please refer LF

4 FLOAT MODULE: selection depending on : Mounting position Level differential required Output of switch module Operating Differential Code witch Orientation Float Travel in mm Liquid Density (Min) Kg/dm3 Operating differential values are referred to Liquid Density= Mounting Face tandard Float Assembly 70 7 total With On/Off witch module 2mm total H Operating Differential 600 max 247 max. With L=990mm (0.25 X L approx) Variable with extension Length L = 990mm max. For H total length with extension - L+22mm (from mounting face) A Adjustable Differential extension with On/Off switch modules only Adjustable (approx.) Adjustable (approx.) td. Extension Lengths Code Length -000 Without extension mm mm mm For A total length with extension - L+278mm (from mounting face) Mounting Face 75.max Z Z type extension (to lower tripping point below mounting) O.D Operating differential +/- 0 Extension Length LTP Lower Trip Point +/- 25mm L G =.0 - O.D Minimum 560mm tandard with Bellows For Float Travel & Operating Differential Refer Application Note Material Of Construction for Wetside Components: AII 36 tainless teel

5 APPLICATI EXAMPLE: HIGH/LOW ALARM TANDARD HORIZTAL MOUNTING CTROL WITH Z TYPE LEVEL WITCH ALARM Air input Pneumatic Proportional Control FIG FIG. 2 FIG. 3 CTROL PUMP OR VALVE WITH ADJUTABLE DIFFERENTIAL INTERFACE CTROL EXTERNALLY MOUNTED FLOAT WITCH IN CHAMBER FIG. 4 FIG. 5 FIG. 6 Minimum information required to quote - )ketch giving details of installation 2)Application details Fluid Operating pressure Kg/cm 2 Operating temp. 0 C Minimum density Kg/dm 3 Tank material witch mounting position /Vertical 3)witch module Electric/Pneumatic proportional witch housing AII 36. Aluminium LM6. Contact rating 5 A/0A, C/o / 2 C/o Degree of protection IP 65 / IP 67 High temp. stand off. Yes/No. 4)Flange module tandard square flange/slip on flange lip on flange material Nozzle size 2 /2" NB to 6" NB 5)Float module td./hori. extn/ver.extn./adj. extn./ball type float Operating differential mm. Extension length horizontal Extension length vertical 6)Accessories (optional) Counter flange standard/extended Material of counter flange C/36 Float chamber type Float chamber material

6 FLOAT CHAMBER (FOR EXTERNAL MOUNTING) Ends of pipe available bare weldable (as shown) -Flanged -Nipple NB Pipe M 2 TUD 4 NO. EQIP. 0N 92 P.C.D FOR DETAIL REFER LF Ø MIN to 600 MAX A B C D 300 MIN TO 600 MAX. E F G H (LH Connection) (RH Connection) MOUNTING ACCEORIE: M 2, 4 Nos., 92 P.C.D A. Counter flange extended - (weldable) Matl. : AII - 36/C painted Construction : fabricated. -To facilitate welding of counter flange on tank, provide ø 77 hole on the tank B. Counter flange extended - (weldable) Matl. : AII - 36/C painted Construction : fabricated. To facilitate welding of counter flange on thick coated tank, provide ø 77 hole on the tank. *** Continuous developments may necessitate changes without notice. LF R08 07/0 LF_MagFloatwitch_37EAEY BEM Pvt. Ltd. H.O. : 39, Electronic Co-Operative Estate, Pune (India) Tel. : , Fax : sales@sbem.co.in, ho@sbem.co.in Web : IO 900: 2008 Works : Bibwewadi Industrial Estate, 69/A/2, Pune-atara Road, Pune (India), mfg@sbem.co.in O ffice : Mumbai Chennai New Delhi Pune T el. : , , , F ax : E mail : mumbai@sbem.co.in chennai@sbem.co.in newdelhi@sbem.co.in pune@sbem.co.in