T10 Float Level Switch D E S C R I P T I O N The T10 float level switch offers industrial and municipal users a low-cost solution to wide differential level applications. The moving ballast causes a flipping motion of the float to provide positive switching action even under turbulent conditions. Recommended for use in either clean or dirty liquids, it is ideal for use in sump control, wet well applications and pilot systems. F E A T U R E S Pump Customer Supplied Control On 1⁄ 2 differential band 20, 40, or 60 ft. (6, 12, or 18 m) differential band • Differential band 20, 40, or 60 feet (determined by cable length) • May be wired for automatic fill or empty cycles 1⁄ 2 differential band • Dry contact switch mechanism • Cable CSA (SJTO) approved • Switch chatter eliminated with moving ballast Pump • Single float with simple control circuit eliminates the need for latching devices or double switching with two units Off • Specific gravity range of 0.6 to 1.5 • Positive switching action—even in turbulent conditions A P P L I C A T I O N S • Cable anchoring point protected by adjustable strain relief • Water and wastewater • All PVC exposed components make it resistant to water-based chemicals • PVC compatible caustics • Mounts easily by cable tie (included) or optional cable weight • PVC compatible acids • PVC compatible chemicals S P E C I F I C A T I O N S Switch type Process temperature Ambient temperature Specific gravity Differential band Materials of construction Cable size Non-inductive switch ratings SPDT dry contact +140° F (+60° C) maximum +32° to +140° F (0° to +60° C) 0.6 minimum / 1.5 maximum 18 inches (457 mm) minimum / 60 feet (18 meters) maximum Polyvinylchloride (PVC) with adjustable neoprene strain relief and butyl cosmetic ring 18 AWG (3 x 1.5 mm) 41 strands 21.00 @ 120 VAC / 21.00 @ 240 VAC 14.00 @ 30 VDC / 0.60 @ 120 VDC / 0.30 @ 240 VDC P R I N C I P L E Figure 1 O F O P E R A T I O N Figure 1 Figure 2 Figure 3 T10 level switches contain a dry contact switch with a swinging ballast. The cable on the float is anchored in the tank at the midpoint of the differential band. Contacts have not yet changed state with rise in level. Figure 5 6.00 (102 mm) minimum Figure 2 As the level falls to the lowest point of the differential, the cable is pulled taut, tilting the float, causing the ballast to swing to the opposite end of the float. The float reacts in a flipping action which causes the switch contacts to change state. The minimum level recommended is 6 inches (152 mm) from the bottom of the vessel. Figure 4 Figure 4 Figure 5 Figure 6 As the highest point of the differential is reached, the cable is again pulled taut, tilting the float, causing the ballast to swing back to its original position in the float. The float flips, causing the switch contacts to return to their original state. This cycle repeats as the level changes. Figure 6 The differential band equals twice the length of cable from its point of attachment to the strain relief, to the point at which it is anchored. For an alarm function, use a minimum differential band of 18.00 inches (457 mm). Figure 3 Since the float remains in this position even under turbulent conditions, switch chatter is eliminated. Strain relief Water rising before the high level point is reached. Water falling before the low level point is reached. Strain relief These photographs show the position of the float with rising and falling liquid level. M O D E L N U M B E R S Model T10-5104-020 is available for quick shipment, usually within one week after factory receipt of a complete purchase order, through the Expedite Ship Plan (ESP) T10-5104-020 T10-5104-040 T10-5104-060 089-5209-001 2 Dry contact switch mechanism, 20 ft. (6 m) maximum differential band, 20 ft. (6 m) cable Dry contact switch mechanism, 40 ft. (12 m) maximum differential band, 40 ft. (12 m) cable Dry contact switch mechanism, 60 ft. (18 m) maximum differential band, 60 ft. (18 m) cable Cable weight accessory kit containing weight, clamp, and two screws M O U N T I N G P R O C E D U R E T10 level switch may be mounted by using cable ties included with the unit, or by the optional cable weight which must be purchased separately. CAUTION: The recommended method of carrying the T10 is by the cable. The unique moving ballast in the unit may cause it to unexpectedly flip out of the individual’s hands. Cable weight method (optional) Cable tie method (standard) A pipe or other structure must be available in the tank to which the plastic cable tie may be affixed. Refer to Figure 7. Position the adjustable strain relief on the cable to allow one-half of the distance of the differential band between the end of this strain relief and the end of the strain relief on the float. Float strain relief Cable ties When an anchoring structure in the tank is not available, the cable weight method should be used. Refer to Figure 8. Adjustable strain relief Float strain relief Position the adjustable strain relief on the cable to allow one half the distance of the desired differential band between the midpoint of the adjustable strain relief on the float. Remove one of the screws in the clamp at the top of the weight. Loosen the second screw. Refer to Figure 9. Adjustable strain relief Pipe Cable weight Tank wall Figure 8 Figure 7 Secure the cable to the structure with one cable tie at the midpoint of the strain relief. Secure the second cable tie to the structure at the top end of the adjustable strain relief, leaving approximately two inches (51 mm) of free strain relief towards the float. Proceed to wire the unit. NOTE: Be sure that nothing in the tank prevents the full extension of the cable in either direction. D I M E N S I O N A L Position the weight at the midpoint of the adjustable strain relief. Tighten both screws to secure the weight to the cable. Be sure the cable cannot be pulled through the adjustable strain relief. Lower the unit in the tank until the cable weight is positioned at the midpoint of the desired differential band. Secure the cable at the top of the tank. DO NOT secure the cable to any sharp object which could cut the cable. Proceed to wire the unit. Clamp Adjustable strain relief Weight Figure 9 Inches (mm) Model T10 Cable weight (optional) 9.25 (235) Adjustable strain relief Clamp Float strain relief NOTE: Minimum distance between anchor point on adjustable strain relief and float strain relief is 9.00 inches (229). 5.25 (133) 5.00 (127) 316/316L SS Weight Adjustable strain relief Cable Cable floats Clamps Tether point strain relief 10' 10' Tether point at half of span 10' 1.50 (38) NOTE: Cable floats not provided with 20' cable, one float provided with 40' cable, and two floats provided with 60' cable. Span (20, 40, or 60 feet) 3 W I R I N G P R O C E D U R E The T10 float level switch may be wired for fill or empty pump control functions or as a high or low level alarm. Wire according to the terminal connection drawing below. CAUTION: 1. 2. 3. 4. The unused wire (third wire) must be electrically insulated. Do not fasten electrical cable onto rough or sharp surfaces. Use only on equipment with thermal overload protection. Consult local codes for proper application. FOR EMPTY PUMP CONTROL OR HIGH ALARM FUNCTIONS Connect the blue and black wires. FOR FILL PUMP CONTROL OR LOW ALARM FUNCTIONS Line Out to Load Line In Line Out to Load Close on High / Open on Low Black Common Blue Close on Low / Open on High Brown Connect the blue and brown wires. Q U A L I T Y The quality assurance system in place at Magnetrol® guarantees the highest level of quality throughout the company. MAGNETROL is committed to providing full customer satisfaction both in quality products and quality service. The MAGNETROL quality assurance system is registered to ISO 9001 affirming its commitment to known international quality standards providing the strongest assurance of product/service quality available. Model T10-5104-020 is available for quick shipment, usually within one week after factory receipt of a complete purchase order, through the Expedite Ship Plan (ESP). ESP service may not apply to orders of ten units or more. Contact your local representative for lead times on larger volume orders, as well as other products and options. E S P Expedite Ship Plan W A R R A N T Y 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. 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 Heikensstraat 6 • B 9240 Zele, Belgium • 052 45.11.11 • Fax 052 45.09.93 Regent Business Ctr., Jubilee Rd. • Burgess Hill, Sussex RH15 9TL U.K. • 01444-871313 • Fax 01444-871317 Copyright © 2011 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: 44-121.5 EFFECTIVE: July 2009 SUPERSEDES: May 2007