7+(1(;7*(1(5$7,212)0$*1(7,&/(9(/,1',&$7,21 ORS POINT LEVEL SWITCH DESCRIPTION Model: ORS (shown with optional junction box) The model ORS reed switch is available to augment the control capabilities of Orion’s extensive line of magnetic level indicators. Housed in an explosion proof stainless steel enclosure, the ORS mounts to the outside of the MLI via clamps. This mounting style allows addition or repositioning of switches at any time, without disruption of the process. Each switch is designed for optimal repeatability and reliability. The magnetic field produced by the MLI float actuates the ORS when the liquid level moves the float into the proximity of the reed switch. The switch is bi-stable, so it will not reset until the float’s magnetic field passes it in the opposite direction. SPECIFICATIONS ORS as a high level switch Model ORS-xxxx-001 Type Bi-stable reed switch Supply Voltage 150V AC/DC max Contact Rating 1.0 amp AC/DC max Maximum Load 25 watts AC/DC max Deadband ORS as a low level switch ±0.50” (13 mm) float travel Temperature Range -58° to 325° F (-50° to 163° C) Enclosure Rating Enclosure Material NEMA 4X/7/9 Standard housing: 316 stainless steel with optional junction box: aluminum or stainless steel Clamp mount to MLI or switch mount rod (both are field adjustable) Mounting Conduit/Cable Entry 3/4” FNPT (consult factory for alternative options) (applies only when optional junction box is provided) AGENCY MODEL CATEGORY FM All models Class I, Div. 1, Groups B, C, & D Class I, Div. 2, Groups A, B, C, & D CSA All models Class II, Groups E, F, & G Class III, Type 4X CE ORS-xAxx-xxx ATEX II 2 G Ex d IIC T6 Ta = -40 to +70° C IECEx ORS-xAxx-xxx IECEx d IIC T6 Ta = -40 to +70° C 3 (76.2) The ORS level switch is completely field adjustable. Simply loosen the mounting clamps and position at the desired location. Ensure that the switch always remains in close proximity to the internal float. MOUNTING TO ATLAS™ OR GEMINI™ MLI ȋȌ With mounting clamps loosened, position ORS reed switch on the MLI body so that the centerline of the stainless steel tube which houses the switch is at the desired switch point level. The switch should be oriented so that the green ground screw is closest to the top of the MLI. Tighten the clamps so that the switch is secured to the MLI. If required, place the insulation between the MLI body and the switch before tightening the clamps. 3 (76.2) I N S T R U MENTS MOUNTING TO AURORA® MLI 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 Follow procedure for mounting to Atlas or Gemini, but ensure that the switch is positioned on the circumference of the Aurora body as close to the indicator as possible. MODEL NO.: SERIAL NO.: MAX. PRESSURE: MAX. TEMPERATURE: TAG NO.: A switch mount rod is an available alternative method for mounting the ORS 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 FLOAT ABOVE SWITCH The leads switch housing are color coded as follows: 1 (RED) C (WHITE) 2 (BLACK) White = Common Black = Closed when float below switch Red = Closed when float above switch FLOAT BELOW SWITCH 1 (RED) C (WHITE) 2 (BLACK) F LOAT CAUTION: If equipment is used in a manner not specified by the manufacturer, protection provided by the equipment may be impaired. ORS 1-Amp SPDT Point Level Switch O R S 1 2 3 4 4 5 6 0 0 1 8 9 10 7 ENCLOSURE 6 CHAMBER MOUNTING CODE 1 Standard stainless body without junction box 1 MLI model code digit 20 is 1, 2, or 7 A Option 1 with cast aluminum junction box 2 MLI model code digit 20 is 3, 4, 5 or 6 S Option 1 with stainless steel junction box 3 MLI model code digit 20 is A, B, C, or D 4 MLI model code digit 20 is E, F, G, H, or J 5 MLI is a Top Mount design 5 AGENCY APPROVAL 1 FM / CSA A ATEX 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: ORS-300.2 EFFECTIVE: SEPTEMBER 2010