Step Three
Step Two
SPECIFICATIONS
About This Manual:
PLEASE READ THE ENTIRE INSTRUCTION SHEET PRIOR
TO INSTALLING OR USING THIS PRODUCT. This Instruction
sheet includes information on all models of Switch-Tek Vertical
High-Temp Float Level Switches from Flowline: LV30-S201,
LV31-S201 and LV32-S201. Please refer to the part number locat-
ed on the sensor label to verify the exact model which you have
purchased.
User's Responsibility for Safety:
Flowline manufactures a wide range of liquid level sensors and
technologies. While each of these sensors is designed to operate in
a wide variety of applications, it is the user's responsibility to select
a sensor model that is appropriate for the application, install it
properly, perform tests of the installed system, and maintain all
components. The failure to do so could result in property damage
or serious injury.
Proper Installation and Handling:
Because this is an electrically operated device, only properly trained
staff should install and/or repair this product. Use a proper sealant
with all installations. Never overtighten the sensor within the fitting,
beyond being hand tight. Always check for leaks prior to system
startup.
Material Compatibility:
All models in the LV30 series are made of 316 stainless steel. Make
sure that the model which you have selected is compatible with the
application liquids. To determine the chemical compatibility between
the sensor and its application liquids, refer to the Compass Corrosion
Guide, available from Compass Publications (phone 858-589-9636).
Wiring and Electrical:
The Switch-Tek Vertical High-Temp Float features a two-wire
design with a SPST dry contact closure. Electrical wiring of the
sensor should be performed in accordance with all applicable
national, state, and local codes.
Normally Open/Normally Closed:
The orientation position of the float determines whether the switch is
Open or Closed. The orientation is identified along the side of the
float and can be changed by revering the float 180 degrees.
Flammable, Explosive and Hazardous Applications:
The LV30 series should not be used within flammable or explosive
applications. In hazardous applications, use redundant measurement
and control points, each having a different sensing technology. Refer to
the National Electric Code (NEC) for all applicable installation require-
ments in hazardous locations.
About Single Station Sensing
Flowline's LV30 series use a magnetic float which rides up and
down a stem containing the reed switch. The only moving part is the
float. No bearings, packing glands, bellows or electronic gadgets are
used. The Switch-Tek High-Temp Floats are built rugged to resist
shock and vibration. The LV30 series utilize a low cost, flexible
design which allows for vertical mounting at the top or bottom of a
tank. The Switch-Tek High-Temp Floats can be mounted up, down
or up to 20 degrees off vertical.
Power
Supply
N.O.
N.C
.
Power
Supply
N.O.
N.C
.
Power
Supply
N.O
.
N.C.
Power
Supply
N.O
.
N.C.
INSTALLATION
Orientation:
A standard NPT female boss in tank top, bottom or
side is all that is required. The units operate in any attitude - from the
vertical to a 20° inclination - with lead wires up or down. Standard
IPS pipe extends level switches to any intermediate level in the tank.
–20¡
–20¡
OR
Normally Open or Normally Closed:
Each level switch can
be wired Normally Open (NO) or Normally Closed (NC). The Normal
Condition is typically when the float rests in a dry state. Each LV30
series level switch is shipped in the NO state and can be switched in
the field by rotating the float 180 degrees. The float is marked NO or
NC along the side to easily indicate the state of the switch.
Normally Open:
In the NO state, the switch is open when the
float rests in a dry state along the bottom of the stem and is closed
when liquid lifts the float.
Normally Closed:
In the NC state, the switch is closed when the
float rests in a dry state along the bottom of the stem and is open when
liquid lifts the float.
Switching the Output:
To reverse from NO or NC, remove the clip
from the stem, rotate the float 180 degrees and replace the clip to the stem.
N
.O
.
N
.C
.
N.O.
N.C
.
N.O
.
N.C.