7+(1(;7*(1(5$7,212)0$*1(7,&/(9(/,1',&$7,21 OES POINT LEVEL SWITCH DESCRIPTION The Model OES snap switch is utilized to expand the control capabilities of Orion’s extensive line of magnetic level indicators. This cam-operated DPDT mechanism is clamp-mounted to the outside of the MLI. This mounting style allows easy addition or repositioning of switches without disruption of the process. Model: OES Designed for optimal repeatability and reliability, the OES-100 is actuated by simple magnetic coupling. As the liquid level moves, the MLI float (with its internal magnets and flux rings) follows. When the float moves into the proximity of the snap switch, the switch magnet interacts with the float’s magnetic field actuating the switch. The bi-stable design of the switch ensures that it will not reset until the float passes the switch in the opposite direction. For use in Installation Category II, Pollution Degree 2. If equipment is used in a manner not specified by the manufacturer, protection provided by the equipment may be impaired. OES as a high level switch SPECIFICATIONS Model OES-xxxx-xxx Type Bi-stable, cam operated switch Supply Voltage 250V AC/DC max Contacts Two SPDT (one DPDT) Contact Rating OES as a low level switch 10.1 amps max Deadband ±0.75” (20 mm) float travel Temperature Range -58° to 392° F (-50° to 200° C) Enclosure Rating NEMA 4X/7/9 Enclosure Material Mounting Conduit/Cable Entry AGENCY MODEL CATEGORY FM All models Class I, Div. 1, Groups B, C, & D Class I, Div. 2, Groups B, C, & D CSA All models CE OES-xxxx-xxx Aluminum or stainless steel Clamp mount to MLI or switch mount rod (both are field adjustable) 3/4” FNPT (consult factory for alternative options) Class I, Div. 2, Groups A, B, C, & D (FM only) Class II, Groups E, F, & G Class III, Type 4X Installation Category II, Pollution Degree 2 Low Voltage Directives, 73/23/EEC & 93/68/EEC per Harmonized Standard EN 61010-1/1993 & Amendment No. 1 MOUNTING TO ATLAS™ OR GEMINI™ MLI ȋȌ 3 (76) The OES level switch is completely field adjustable. Simply loosen the included mounting clamps and position at the desired location. Ensure that the switch always remains in close proximity to the internal float. 5.5 (139) Position the OES cam-operated snap switch on the MLI body so that the centerline of the switch enclosure is at the desired switch point level. Ensure that the switch is oriented so that the arrow on the internal mechanism is pointing toward the top of the MLI. Install the clamps around the MLI and over the mounting brackets on the top and bottom of the OES housing. Tighten the clamps until the switch is firmly secured to the MLI. Replace the housing cover. If required, place the insulation between the MLI body and the OES before securing the clamps. 8.38 (212) I N S T R U MENTS MADE IN USA I N S T R U M ENTS BATON ROUGE, LA PHONE 1-225-906-2343 FAX 1-225-906-2344 WWW.ORIONINSTRUMENTS.COM MODEL NO.: SERIAL NO.: MAX. PRESSURE: MAX. TEMPERATURE: TAG NO.: MOUNTING TO AURORA® MLI Special care must be taken when adding OES switches to an Aurora® after initial purchase. For proper function, the switch must be located as close to the internal float magnet as possible. To achieve this, slight repositioning of the visual indicator may be required. Physical Dimensions A switch mount rod is an available alternative method for mounting the OES to an MLI when insulation is present. The rod assembly, which is welded to the MLI chamber, allows the switch to slide along the full length. When the desired position is selected, simply tighten it in place. WIRING The lower conduit opening is protected with a plastic shipping plug. The upper opening is sealed with a steel plug. If it is preferable to wire through the upper conduit entry, the steel plug may be moved to the lower opening. The DPDT switch has two sets of contacts. Refer to diagram above or label on mechanism. F LOAT ORION INSTRUMENTS OES ELECTRIC SWITCH INSTALL WITH ARROW POINTING UP FLOAT BELOW SWITCH CAUTION: If equipment is used in a manner not specified by the manufacturer, protection provided by the equipment may be impaired. OES 10-Amp DPDT Point Level Switch O 1 E S 2 3 4 5 6 0 0 1 8 9 10 7 4 ENCLOSURE 6 CHAMBER MOUNTING CODE A Cast aluminum 1 MLI model code digit 20 is 1, 2, or 7 S Stainless steel 2 MLI model code digit 20 is 3, 4, 5 or 6 3 MLI model code digit 20 is A, B, C, or D AGENCY APPROVAL 4 MLI model code digit 20 is E, F, G, H, or J FM/CSA 5 MLI is a Top Mount design 5 1 7 MOUNTING STYLE C Clamp mounted on MLI (standard) P Clamp mounted on MLI with insulation pad R Attached to switch mount rod 6646 Complex Drive • Baton Rouge, Louisiana 70809 • 225-906-2343 • Toll Free 866-55-ORION (866-556-7466) • Fax 225-906-2344 • www.orioninstruments.com Effective January 1, 2011: 2105 Oak Villa Drive • Baton Rouge, Louisiana 70815 Copyright © 2010 Orion Instruments, LLC. All rights reserved. Printed in the USA. Performance specifications are effective with date of issue and are subject to change without notice. Orion, Orion logotype, Magnetrol, Magnetrol logotype, and Aurora are registered trademarks of Magnetrol International. Atlas and Gemini are trademarks of Magnetrol International. BULLETIN: OES-100.2 EFFECTIVE: SEPTEMBER 2010