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 PHYSICAL SPECIFICATIONS Physical Range Minimum Specific Gravity Float and Trim Material Mounting Connection Material Process Connections Narrow differential, 0.50" 0.40 316/316L stainless steel with 18-8 stainless steel pivot pin 316/316L stainless steel 11⁄2" or 2" NPT or BSP threads 2" 150# or 300# ANSI flanges -40° to +300° F (-40° to +149° C) -40° to +160° F (-40° to +71° C) 1500 psi (103 bar) Process Temperature Range Ambient Temperature Range Maximum Process Pressure ELECTRICAL SPECIFICATIONS Type of Contacts Type of Switches Switch Ratings SPST, SPDT or DPDT Hermetically sealed reed switch with optional four-wire dry contact relay SPST, 100 VA, 240 VAC/VDC maximum, 1.0 A maximum switching current SPDT, 30 VA, 240 VAC/VDC maximum, 0.5 A maximum switching current DPDT, 42 VA, 5 A @ 24 VDC hermetically sealed relay DPDT, 42 VA, 5 A @ 120 VAC hermetically sealed relay TYPE 4X/7/9, Class I, Div. 1, Groups C & D 316/316L stainless steel or cast iron/aluminum 1 ⁄2 " NPT or condulet box(es) with 3⁄4" NPT Silver cad-oxide Enclosure Rating Enclosure Material Electrical Connection Contact Material DIMENSIONAL SPECIFICATIONS 8" 2.8 .20" ➀ 8" 2.8 ef. f. Re .20" ➀ " NPT 1/ 2 R " NPT 1/ 2 2.00" Ø 0.85" 1.50" Ø 2.00 Ø 1.50" Ø 1.15" ➁ 1.00" 11/2" or 2" NPT 3.50" 1.00" 6.50" ➀ 6.50" TK1 with threaded connection and SPST or SPDT switch with flying leads ¿ Add 0.75" for models with extended stems 3.50" TK1 with flanged connection and SPST or SPDT switch with flying leads 1/ " NPT 2 Process Opening 4.00" Ref. 3.75" 4.50" Ref. 3/ 4 " NPT Conduit Opening Junction box supplied with DPDT relay " 56 3. 1/ " NPT 2 Process Opening Ø ¡ Travel below center line is 1.44" for models with extended stems 2 ➀ 4.00" 1.75" " NPT Conduit Opening 3/ 4 Junction box available with SPST or SPDT reed switch 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 1 Standard length ¿ Extended length ¡ ¿ Use for 11⁄2" nozzles to 0.71" long and 2" nozzles to 1.94" long ¡ Use for 11⁄2" nozzles between 0.72" and 1.25" long PROCESS CONNECTION SIZE 1 2 1.5" (process connection type code N & T only) 2" or 2" ANSI PROCESS CONNECTION TYPE AND RATING N T A B NPT BSP-T tapered thread 150# ANSI RF flange (process connection size code 2 only) 300# ANSI RF flange (process connection size code 2 only) CONNECTION MATERIAL B 316/316L stainless steel SWITCH TYPE R SPST reed switch S SPDT reed switch D E 100 VA, 240V, 1 A or 30 VA, 240V, 0.5 A Four-wire DPDT powered relay in junction box ¬ 42 VA, 5 A @ 120 VAC (housing codes A & C only) Four-wire DPDT powered relay in junction box √ 42 VA, 5 A @ 24 VDC (housing codes A & C only) ¬ This relay requires a 120 VAC power source to function. √ This relay requires a 24 VDC power source to function. HOUSING AND APPROVAL J A K C T K 1 0 316 SS, FM XP ( switch types R & S only) 316 SS with cast iron/aluminum junction box, FM XP 316 SS, CSA XP (switch types R & S only) 316 SS with cast iron/aluminum junction box, CSA XP B 3 WARRANTY All Magnetrol® mechanical level and flow controls are warranted free of defects in materials or workmanship for five full years from the date of original factory shipment. If returned within the warranty period; and, upon factory inspection of the control, the cause of the claim is determined to be covered under the warranty; then, MAGNETROL will repair or replace the control at no cost to the purchaser (or owner) other than transportation. MAGNETROL shall not be liable for misapplication, labor claims, direct or consequential damage or expense arising from the installation or use of equipment. There are no other warranties expressed or implied, except special written warranties covering some MAGNETROL products. 705 Enterprise Street • Aurora, Illinois 60504-8149 • 630-969-4000 • Fax 630-969-9489 [email protected] • www.magnetrol.com Copyright © 2015 Magnetrol International, Incorporated. All rights reserved. Printed in the USA. Performance specifications are effective with date of issue and are subject to change without notice. Magnetrol & Magnetrol logotype are registered trademarks of Magnetrol International, Incorporated. BULLETIN: 44-108.8 EFFECTIVE: August 2015 SUPERCEDES: August 2014