Gems LS-700 Series Training manual

P/N 154474
Rev. G
Transducer for Continuous Indication (See Figure 1)
Input: 4-30 VDC
Output: 298mA @ +77°F
Current Change: 1mA/1.8°F
Response Time: 150 Seconds (80% gradient in 60 Sec.)
Operating Range: -13°F to +221°F
Accuracy: ±2°F @ 77°F
Integrated Temperature Sensors***
Thermostat for Switch Actuation (See Figure 2)
Switch Ratings: 2.6A/120V (inductive)
Contact Operation on Increasing Temperature:
"Opens" when set point reached - or -
"Closes" when set point reached
Standard Temperature Set Point (±10°F):
100°F, 125°F, 150°F, 175°F, 200°F or 225°F
Switch Ratings - Maximum Resistive Load
(LS-700 and LS-700-EP Series)
This product is suitable for Class I and Class II applications only, per the requirements of standard EN60730
and any additional specific requirements for a particular application or medium being sensed. Class I
compliance of metal bodied units requires a ground connection between the metal body and the earthing
system of the installation. Class I compliance of plastic bodied units in contact with a conductive medium
requires that the medium be effectively earthed so as to provide an earthed barrier between the unit and
accessible areas. For Class III compliance, a supply at safety extra-low voltage (SELV) must be provided.
Please consult the Factory for compliance information on specific part numbers.
- Figure 1 -
- Figure 2 -
Temperature
Sensor
Assembly
Bottom
of Unit
Note: End of unit stem must be submerged a
minimum of 2-3/4" for level switch actuation.
- Typical Wiring
Diagram -
GRN GRN
Level
Switch
Temperature
Sensor
***Note: Please use caution when handling these units, as
impact shock may damage the thermostat temperature
setting.
Important Points!
Product must be maintained and installed in strict accordance with the
National Electrical Code and GEMS technical brochure and instruction
bulletin. Failure to observe this warning could result in serious injuries
or damages.
An appropriate explosion-proof enclosure or intrinsically safe interface
device must be used for hazardous area applications involving such
things as (but not limited to) ignitable mixtures, combustible dust and
flammable materials.
*** WARNING: To prevent ignition of flammable or combustible atmo-
spheres, disconnect power before servicing.
Pressure and temperature limitations shown on individual catalog
pages and drawings for the specified level switches must not be ex-
ceeded. These pressures and temperatures take into consideration
possible system surge pressures/temperatures and their frequencies.
Selection of materials for compatibility with the media is critical to
the life and operation of GEMS level switches. Take care in the
proper selection of materials of construction; particularly wetted
materials.
Life expectancy of switch contacts varies with applications. Contact
GEMS if life cycle testing is required.
Ambient temperature changes do affect switch set points, since the
specific gravity of a liquid can vary with temperature.
Level switches have been designed to resist shock and vibration; how-
ever, shock and vibration should be minimized.
Liquid media containing particulate and/or debris should be filtered to
ensure proper operation of GEMS products.
Electrical entries and mounting points may require liquid/vapor seal-
ing if located in an enclosed tank.
Level switches must not be field repaired.
Physical damage sustained by the product may render it unservice-
*Level switch units with 100 VA switches are not U.L. recognized.
**Limited to 50,000 operations
VA Volts
0-50
120
100
0-30
120
240
0-50
120
240
120
240
Amps (AC)
.2
.08
N.A.
.4
.17
.08
0.5
.4
.2
.8**
.4
Amps (DC)
.13
N.A.
.3
.3
.13
.06
0.5
.4
.2
N.A.
N.A.
100*
10
General Use
20
Pilot Duty
50
General Use
Buna N 316 Stainless Steel
Float Types...LS-700 Series ONLY (A single float type is selected for use at all actuation points)
.65
1, 4, 61, 3, 4,5,6
** Derated with Increasing Temperature
*** Standard Construction
**** Ceramic Potting Construction Required
Float Material
Compatible Mtg Types
Float Dimensions
Part Number
Pressure, PSI, Max.
Min. Liquid S.G.
Operating Temp.
Water: to 180oF (82.2oC)
15/16"
(23.8 mm)
1" Dia.
(25.4 mm)
1-1/4"
(31.7. mm)
29/32" Dia.
(23.0 mm)
1"
(25.4 mm)
1-1/2" Dia.
(38.1 mm)
39049 138030 60241
Oil: -40oF to +250oF
(-40oC to +121.1oC)
Oil: -40oF to +250oF
(-40oC to +121.1oC)
300*250*1000** 100
.45 .60 .70
More Float Types
1, 2, 3, 4, 5, 6
→→
→→
→↑
↓
←←
←←
←→→
→→
→
↓
↑
←←
←←
←
↓
↑
→→
→→
→←←
←←
←
1, 2, 3, 4,5,6
-40oF to +300oF
(-40oC to +148.9oC)
133764
1-3/32"
(27.8 mm)
Spring Bias
↓
↑
←←
←←
←
→→
→→
→29/32" Dia.
(23.0 mm)
Teflon - Spring Biased
Stem and Mounting
Material
Max. Length
Mounting Position
Float Stops
Pressure Rating,
PSI, Max.*
48 Inches (121.9 cm)
Vertical ± 30° Inclination
Brass Units: Beryllium Copper Grip Rings; Stainless Steel Units: S.S. ARMCO PH-15-7MO Grip Rings
Brass or 316 Stainless Steel
See Float Values Below 50
*Mounting only. Maximum pressure rating for complete unit will be the lowerof this pressure or the selected float pressure
(See Float Types, below)
LS-700 Series Mounting Types...
Each mounting type can be configured with stem lengths (Lo) and float materials
indicated in table below.
Type 1
1/8" NPT
Type 3
1" NPT
Type 5
1-5/16" - 12UNF-2A
Type 4
3-5/8" Dia. Flange
Type 6
3/8"-24
Installation...
Install LS-700 and LS-700-EP Series switches vertically in tank top (mounting up) or in tank bottom (mounting down). Multi-station
level switches will operate normally inclined up to 30o.
Bolt Circle
3" Dia.
(76.2 mm)
↓
↑
3/16"
(4.8 mm)
5/16" Dia.
(7.9 mm)
Thru (6)
Holes 1/8"
NPT
1/2"
HEX
1-1/2"
HEX
Neoprene
O-Ring
1-5/16"
HEX
1-1/16"
HEX
1/2"
HEX
Type 2
3/4" NPT
(Includes LS-700's with Temperature Sensors)
Series LS-700, 700-EP
Multi-Station Level Switches
Instruction Bulletin No. 154474
↓
↑
3-5/8" dia.
(92.1 mm)
-40oF to +300oF***
(-40oC to +148.9oC)
301°F to 500°F****

Note: A, B and D dimensions are based on a liquid
specific gravity of 1.0.
L4
L3
L2
L1
L5
Lo
(Length
Overall)***
B
D
C
A
Notes
** Actuation Level Distances and Lo (overall unit length) are
measured from inner surfaces of mounting plug or flange.
***Length Overall (Lo) = L1 + Dimension D. See Mounting
Types for Maximum Length values.
L4
L3
L2
L1
L5
Lo
(Length
Overall)***
D
A
B
C
LS-700
LS-700-EP
↓
↑↓
↑
↓
↑
↓
↑
↓
↑
↓
↑
↓
↑
↓
↑
L1
L2
L3
L4
L5
NO/NC
Red
Yellow
Blue
Sw. Com.
Red
Yellow
Blue
Sw. Com.
Red
Yellow
Blue
Black
Group I
None
Group II
Common
Wire
Wiring
SPST Switches
Wiring Color Code
Tinted Area Designates U.L.
Recognized Wiring Configurations
Notes
1. Units with 100 VA switches are not U.L.
recognized.
Typically, one float is required for each point at which you need a
switch action to occur. The number of actuation levels available
depends on the Group Type Wiring selected. (See Below)
LS-700-EP Series
Switch (N.O. or N.C.): SPST - 20 VA
Electrical Termination: Size 50 J-Box; Explosionproof,
Watertight, With Terminal Strip
Approvals: Factory Mutual (FM)
LS-700 Series
Group I Wiring: 1 to 5 Actuation Levels
Group II Wiring: 1 or 3 Actuation Levels
Switch (SPST, N.O. or N.C.): 20/100 VA
Lead Wires: #22 AWG, 24" L., Teflon
Approvals: U.L. Recognized - File No. E45168;
CSA Listed - File No. 30200.
Number of Actuation Levels
and Electrical Specifications
1/8" Min.
Float P/N
39049
156900
138030
60241
141750
158369
136550
133764
A
7/8"
3/4"
15/16"
3/4"
13/16"
13/16"
9/16"
15/16"
B
1-3/4"
1-7/8"
2-1/16"
1-13/16"
2"
2-7/16"
2-7/16"
1-7/8"
CD
3/4"
1-1/16"
1"
15/16"
1-1/8"
1-7/16"
1-3/4"
7/8" (N.O.)
1-3/16" (N.C.)
LS-700 Dimensions
1/8" Min.
Float P/N
141750
158369
136550
133764
A
13/16"
13/16"
9/16"
15/16"
B
2"
2-7/16"
2-7/16"
1-7/8"
CD
1-1/8"
1-7/16"
1-3/4"
7/8" (N.O.)
1-3/16" (N.C.)
LS-700-EP Dimensions
Switch actuation levels shown on are determined
as follows: (Actuation Levels Typical**)
A= Minimum distance to highest actuation level
B= Minimum distance between actuation levels
C= Minimum distance between two actuation levels
with one float (Note: One float for two levels can
only be used when low level is N.C. dry and high
level is N.O. dry.)
D= Minimum distance from end of unit to lowest level
Actuation Level Dimensions
Typical Wiring Diagram
For clarity, only two actuation levels are shown in
each group
Brown
Orange
Float Types (LS-700 Series - Cont.)
See Float Value (Chart Below)
1-1/16"
HEX.
Junction Box -
Explosionproof; Watertight.
Shown with cover removed.
1/2" NPT
1-5/16" HEX.
Type 3 - 1" NPT
Type 2 - 3/4" NPT
Mounting Types . . . . LS-700-EP Series
Each mounting type can be con-
figured with stem lengths (Lo)
and float materials indicated in
table below.
Stem and Mounting Material
Max. Length (Lo)
Mounting Position
Grounding
Lug
1/2"
NPT
Brass or 316 Stainless Steel
48 Inches (121.9 cm)
Vertical ±30°Inclination
Brass Units: Beryllium Copper Grip Rings
Stainless Steel Units: ARMCO PH-15-7MO Grip Rings
*Maximum pressure rating for complete unit will be the lower of this pressure or the selected float pressure.
(See float types shown on chart below)
Float Stops
Pressure Rating, PSI, Max.
(Mounting Only*)
316 Stainless Steel
.85
1, 3, 4,5,6
Float Material
Compatible Mtg Types
Float Dimensions
Part Number
Pressure, PSI, Max.
Min. Liquid S.G.
Operating Temp.
141750 156900 136550
-40oF to +300oF - Standard Construction
301°F to 500°F - Ceramic Potting Construction Required
275 600 150 400
.90 .90 1.10
1, 2, 3, 4, 5, 6
158369
304 Stainless Steel
1-1/32"
Dia.
(26.2 mm)
1-7/32"
(30.9 mm)
→→
→→
→↑
↓
←←
←←
←
1.11"
(28 mm)
1.17" Dia.
(30 mm)
→→
→→
→
↑
←←
←←
←
↓
1-19/32"
(40.5 mm)
↓
↑
←←
←←
←
→→
→→
→29/32" Dia.
(23.0 mm)
1-19/32"
(40.5 mm)
↓
↑
←←
←←
←
→→
→→
→29/32" Dia.
(23.0 mm)
316 Stainless Steel
1.10
3
Float Material
Compatible Mtg Types
Float Dimensions
Part Number
Pressure, PSI, Max.
Min. Liquid S.G.
Operating Temp.
141750 136540 133764
-40oF to +300oF
(-40oC to +148.9oC)
275 150 400 1000*
.90 1.05 .65
2, 3
136550
Teflon Spring Biased
↓
Float Types (LS-700-EP Series)
304 Stainless Steel
2, 3 2, 3
* Derated with increasing temperature
-40oF to +300oF
(-40oC to +148.9oC)
-40oF to +300oF
(Standard Construction)
301°F to 500°F
(Ceramic Potting Constr. Req'd.)
1-1/32"
Dia.
(26.2 mm)
1-7/32"
(30.9 mm)
→→
→→
→↑
←←
←←
←
1-19/32"
(40.5 mm)
↓
↑
←←
←←
←
→→
→→
→29/32" Dia.
(23.0 mm)
-40oF to +300oF
(Standard Construction)
301°F to 500°F
(Ceramic Potting Constr. Req'd.)
1-19/32"
(40.5 mm)
↓
↑
→→
→→
→29/32" Dia.
(23.0 mm)
←←
←←
←
1-3/32"
(27.8 mm)
↓
↑
←←
←←
←
→→
→→
→29/32" Dia.
(23.0 mm)
1,4,5,6