MODEL OPS-200 PNEUMATIC SWITCHES DESCRIPTION The Model OPS-200 is a non-bleed pneumatic switch for use with Orion’s extensive line of magnetic level indicators. The OPS-200 utilizes a clamp-on mounting style for easy attachment to the outside of the MLI chamber. Model OPS-200 The magnetic field produced by the MLI float actuates the OPS-200 when the liquid level moves the float into the proximity of the switch magnet. The switch has bi-stable action, so it will not reset until the float’s magnetic field passes it in the opposite direction. The three air line connections allow the option of output on either rising or falling liquid level. Each switch is designed for optimal repeatability and reliability. 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. S P E C I F I C AT I O N S Model OPS-200 Type Bi-stable, non-bleed pneumatic switch Medium Instrument air or clean, dry air or gas passed through a 20 micron filter Supply pressure Vacuum to +200 psig (+13.8 bar) Temperature range 0° to +200° F (-18° to +93° C) Air line connections 1 Deadband ±0.75" (19 mm) float travel Airflow 29 SCFM @ 100 psig (6.9 bar) Air consumption None Enclosure rating NEMA 4X Enclosure material 316L stainless steel Mounting Clamp mount to MLI ⁄4" NPT MOUNTING OPS–200 PNEUMATIC SWITCH NON–BLEED SUPPLY VACUUM TO 200PSIG WARNING 7.41 (188) REF. TO AT L A S OR GEMINI CAUTION: If equipment is used in a manner not specified by the manufacturer, protection provided by the equipment may be impaired. A 20 MICRON IN-LINE FILTER MUST BE INSTALLED ON SUPPLY LINE With mounting clamps loosened, position OPS-200 pneumatic switch on the MLI body so that the centerline of the switch enclosure is at the desired switch point level. The switch should be oriented so that supply ports 1 and 2 point toward the ground. Output port 3 will be on the upper front of the switch when it is properly positioned. 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. MOUNTING TO AURORA Follow procedure for mounting to Atlas or Gemini, but be sure that the switch is positioned on the circumference of the Aurora body as close to the indicator as possible. Mounting Tab 1.50 (38) 7.35 (187) AIR Output Port 7.41 (188) LINE CONNECTIONS In order to prevent blockage or corrosion of the switch due to contaminants, the supply medium should be clean, dry air or gas and should be run through a 20 micron in-line filter. Supply ports 1 and 2 are located on the bottom of the switch. Connect the supply air to one of these ports according to the following: Port 1 Airflow output when float passes above switch Mounting Tab Front 1 Side " NPT 4 Port 2 Airflow output when float passes below switch Port 3 Is the output port that should be connected to the device to be activated. All air line ports are 1⁄4" NPT. Output Port Supply port output on low level Supply port output on high level The muffler should be installed on the unused supply port and must be kept clean and unobstructed for proper function of the switch. Bottom Port 1 2 3 3-way N.O. N.C Inlet Exhaust Outlet Exhaust Inlet Outlet Diverter Selector Outlet Outlet Inlet Inlet Inlet Outlet 2-way N.O N.C Inlet Plug Outlet Plug Inlet Outlet WARNING: Failure to keep muffler unobstructed may cause interior of switch to pressurize and burst, causing serious injury. A Magnetrol Company 6646 Complex Drive • Baton Rouge, Louisiana 70809 • 225-906-2343 • Fax 225-906-2344 • www.orioninstruments.com Copyright © 2003 Magnetrol International, Incorporated. All rights reserved. Printed in the USA. Magnetrol and Magnetrol logotype are registered trademarks of Magnetrol International. 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. BULLETIN: OPS-200.0 EFFECTIVE: September 2003