ORS POINT LEVEL SWITCH DESCRIPTION

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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
‹…Š‡•
ȋȌ
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