Model TK1 Side Mounted Float Level Switch DESCRIPTION The TK1 liquid level switches are float actuated devices designed for horizontal mounting in a tank or process vessel through threaded or flanged connections. This low cost switch is ideal for OEM applications where a single point high or low level alarm is desired. TECHNOLOGY The TK1 achieves switching action through the use of a magnet attached to the float assembly and the magnet’s interaction with a reed switch. As the liquid level changes, the float and, therefore, the float magnet, moves. The proximity of the float magnet to the reed switch causes the switch to change state, making or breaking an electrical circuit. FEATURES APPLICATIONS • Pressure ratings to 1500 psi (103 bar) • Storage tanks • Process temperature ratings to +300° F (149° C) • Process vessels • Specific gravity as low as 0.40 • High or low level alarm • 1.5" or 2" process connections • Low level shut down • Compact design • Overflow protection • For use on rising or falling level • Explosion-proof installations • Reliable reed switch action • Seal pots • All stainless steel construction • Skids • OEM applications 3.25" 3.12" PHYSICAL SPECIFICATIONS Physical Range Narrow differential, 0.50" Minimum Specific Gravity 0.40 Float and Trim Material 316/316L stainless steel with 18-8 stainless steel pivot pin Mounting Connection Material 316/316L stainless steel 1 Process Connections 1 ⁄2" or 2" NPT or BSP threads 2" 150# or 300# ANSI flanges Process Temperature Range -40° to +300° F (-40° to +149° C) Ambient Temperature Range -40° to +160° F (-40° to +71° C) Maximum Process Pressure 1500 psi (103 bar) ELECTRICAL SPECIFICATIONS Type of Contacts SPST, SPDT or DPDT Type of Switches Hermetically sealed reed switch with optional four-wire dry contact relay Switch Ratings 100 VA, 240 VAC/VDC maximum 30 VA, 240 VAC/VDC maximum 5 A @ 24 VDC 5 A @ 120 VAC Enclosure Rating NEMA 4X/7/9, Class I, Div. 1, Groups C & D Enclosure Material 316/316L stainless steel or cast iron/aluminum 1 3 Electrical Connection ⁄2 " NPT or condulet box(es) with ⁄4" NPT DIMENSIONAL SPECIFICATIONS ① .20" ① .20" 1 /2" NPT 1 /2" NPT 2.00" Ø 0.85" 1.50" Ø 2.00 Ø 1.50" Ø ② 1.15" 1.00" 1 1 /2" or 2" NPT 3.50" 1.00" ① 6.50" 3.50" ① 6.50" TK1 with threaded connection and TK1 with flanged connection and SPST or SPDT switch with flying leads SPST or SPDT switch with flying leads 1 /2" NPT 3.38" ①Add 0.75" for models with extended stems ②Travel below center line is 1.44" for models with extended stems 3 / " NPT 4 3 / " NPT 4 Junction box supplied Junction box available with with DPDT relay SPST or SPDT reed switch 2 4.00" Ref . 2.88" Ref. 2.88" Ref. 4.50" Ref. MODEL NUMBER TECHNOLOGY TYPE TK Side-mounted float level switch FLOAT 1 Narrow Differential, minimum s.g. 0.40, 316/316L stainless steel; maximum process pressure 1500 psi FLOAT STEM 0 Standard length ➀ 1 Extended length ➁ (process connection size code 1 only) 1➀Use for 1 ⁄2" nozzles to 0.71" long and 2" nozzles to 1.94" long 1 ➁ Use for 1 ⁄2" nozzles between 0.72" and 1.25" long PROCESS CONNECTION SIZE 1 1.5" (process connection type code N & T only) 2 2" or 2" ANSI PROCESS CONNECTION TYPE AND RATING N NPT T BSP-T tapered thread A 150# ANSI RF flange (process connection size code 2 only) B 300# ANSI RF flange (process connection size code 2 only) CONNECTION MATERIAL B 316/316L stainless steel SWITCH TYPE R SPST reed switch, 100 VA S SPDT reed switch, 30 VA D Four-wire DPDT relay in junction box ➂ 5 A @ 120 VAC (housing codes A, C & F only) E Four-wire DPDT relay in junction box ➃ 5 A @ 24 VDC (housing codes A, C & F only) ➂This relay requires a 120 VAC power source to function. ➃This relay requires a 24 VDC power source to function. HOUSING AND APPROVAL E 316 SS, UL XP (switch types R & S only) F 316 SS with cast iron/aluminum junction box, UL XP J 316 SS, FM XP ( switch types R & S only) A 316 SS with cast iron/aluminum junction box, FM XP K 316 SS, CSA XP (switch types R & S only) C 316 SS with cast iron/aluminum junction box, CSA XP TK 1 0 B 3 WARRANTY All Magnetrol mechanical level and flow con- or replace the control at no cost to the purchaser trols are warranted free of defects in materials (or owner) other than transportation. or workmanship for five full years from the Magnetrol shall not be liable for misapplication, date of original factory shipment. labor claims, direct or consequential damage or If returned within the warranty period; and, expense arising from the installation or use of upon factory inspection of the control, the equipment. There are no other warranties cause of the claim is determined to be covered expressed or implied, except special written under the warranty; then, Magnetrol will repair warranties covering some Magnetrol products. 5300 Belmont Road  Downers Grove, Illinois 60515-4499  630-969-4000  Fax 630-969-9489  www.magnetrol.com 145 Jardin Drive, Units 1 & 2  Concord, Ontario Canada L4K 1X7  905-738-9600  Fax 905-738-1306 Heikenstraat 6  B 9240 Zele, Belgium  052 45.11.11  Telex 25944  Fax 052 45.09.93 Regent Business Ctr., Jubilee Rd.  Burgess Hill, Sussex RH15 9TL U.K.  01444-871313  Fax 01444-871317 Copyright © 2002 Magnetrol International, Incorporated. All rights reserved. Printed in the USA. Magnetrol and Magnetrol logotype are registered trademarks of Magnetrol International. BULLETIN: 44-108.3 EFFECTIVE: October 2002 Performance specifications are effective with date of issue and are subject to change without notice. The brand and product names contained within this document are trademarks or registered trademarks of their respective holders. SUPERCEDES: January 2002