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Series L312 & L500 Custom Level Switches
Compact, 1-6 Reed Switch Outputs
DESCRIPTION
The L312 series level switches are individually designed from over 360 component parts to create a custom switch available in lengths from one foot (304mm) to four feet (1.2m). Switch point tolerance is +/- 1/8" (3mm).
The L500 series level switches are individually designed from over 1,400 component parts to create a custom switch available in lengths from one foot (304mm) to 11 feet (3.3m). Switch point tolerance is +/- 1/8" (3mm).
To specify, review the choices in mounting types, stem material, float size and material, switching points, and electrical specifications. Fax or call us to review.
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L312
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L500
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Each reed switch requires one float except in certain special applications (consult factory). For special applications, a single float can be used to activate two switch points, though these points must have a minimum separation of 1/4" (6 mm). The maximum number of actuation levels depends on the wiring type selected.
Ratings:
L312: 20 VA@120VAC SPST
50VA@240 VAC SPST
L500: 20,50 or 100 VA@120 VAC SPDT
50VA @240 VAC SPST
Connection: 24" Free Leads #22 AWG
Mounting Attitude: Vertical ±30° |
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| Table 1 - Mounting Types |
| Model L312 |
Model L500 |
| Code |
Mounting |
Code |
Mounting |
| 00 |
No Mounting |
04 |
1/2"NPT |
| 01 |
1/8"NPT |
07 |
11/4"NPT |
| 02 |
1/4"NPT |
09 |
2"NPT |
| 03 |
3/8"NPT |
75 |
3" 150# ANSI Flange |
| 05 |
3/4"NPT |
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| 06 |
1"NPT |
| 07 |
11/4"NPT |
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| Table 2 - Stem Materials |
| Model L312 |
Model L500 |
| Code |
Material |
Code |
Material |
| BR |
Brass |
BR |
Brass |
| PV |
PVC |
SS |
316SS |
| SS |
316SS |
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| TF |
Teflon (max. 24") |
| PS |
Polysulfone |
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| Table 3 - Float Materials and Dimensions |
| Model L312 |
Model L500 |
| Code |
Material |
Dimensions |
Code |
Material |
Dimensions |
| 1010BN |
Buna N |
1"x1" |
1217BN |
Buna N |
1.25"x1.875" |
| 1010PV |
PVC |
1"x1" |
1817BN |
Buna N |
1.875"x1.75" |
| 1010STD |
316SS |
1"x1" |
2000 |
316SS |
2" Sphere |
| 1410 |
316SS |
1.5"x1" |
1513 |
316SS |
1.5"x1.3" |
| 1000LW |
316SS |
1" Sphere |
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| 0815LSG |
316SS |
0.9"x1.5" |
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| Table 4 - Reed Switch Electrical Specifications |
| Model L312 |
Model L500 |
| Code |
Description |
Code |
Description |
| G1 |
SPST switches, share a common wire, max 5 switch points |
G1 |
SPST switches, circuits share a common wire, max 6 switch points |
| G2 |
SPST switches, independent circuits, max 3 switch points |
G2 |
SPST switches, independent circuits, max 6 switch points |
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G3 |
SPDT switches, circuits share a common wire, max 6 switch points |
| G4 |
SPDT switches, independent circuits, max 6 switch points |
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| Table 5 - Operating Specifications for Material Combinations |
| Model L312 |
Model L500 |
| Float Code |
Mounting Code |
Temp. |
Pressure |
*SG |
Float Code |
Mounting Code |
Temp. |
Pressure |
*SG |
| 1010BN |
00, 01, 02, 03, 06, 07 |
-40 to +180ºF |
150 PSIG |
0.80 |
1217BN |
04, 07, 09, 75 |
-40 to +180ºF |
150 PSIG |
0.65 |
| 1010PV |
00, 01, 02, 03, 06, 07 |
-40 to +140ºF |
50 PSIG |
0.95 |
1817BN |
04, 09, 75 |
-40 to +180ºF |
150 PSIG |
0.65 |
| 1010STD |
00, 01, 02, 03, 06, 07 |
-40 to +300ºF |
600 PSIG |
0.95 |
2000 |
04, 09, 75 |
-40 to +300ºF |
750 PSIG |
0.75 |
| 1410 |
00, 01, 02, 03 |
-40 to +300ºF |
100 PSIG |
0.70 |
1513 |
04, 09, 75 |
-40 to +300ºF |
120 PSIG |
0.85 |
| 1000LW |
00, 01, 02, 03, 06, 07 |
-40 to +300ºF |
275 PSIG |
0.80 |
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| 0815LSG |
00, 01, 002, 03, 05, 06, 07 |
-40 to +300ºF |
200 PSIG |
0.85 |
| *SG refers to recommended minimum liquid specific gravity |
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| ACTUATION LEVEL DIMENSIONS |
| A= |
Minimum distance from actuation point to bottom of mounting. |
| B= |
Minimum distance between actuation levels. |
| C= |
Minimum distance from end of unit to lowest actuation point. |
| D= |
Minimum distance between actuation point when a single float is used to actuate two switches. |
| Notes: |
| 1) |
A, B, and C dimensions are based on a specific gravity of 1.0. |
| 2) |
One float for two actuation levels can be used only with a 20VA switch. |
| 3) |
Actuation levels are calibrated on descending fluid level, with water as the fluid, unless otherwise specified. |
| 4) |
Standard tolerance on actuation levels is ±1/8" (3mm). |
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| Dimensions |
| Model L312 |
Model L500 |
| Float Code |
A |
B |
C |
D |
Float Code |
A |
B |
C |
D |
| 1010BN |
1" |
1-3/4" |
1" |
1/8" |
1217BN |
1 1/2" |
3" |
2" |
1/4" |
| 1010PV |
1" |
1-3/4" |
1" |
1/8" |
1817BN |
1 1/2" |
3" |
2" |
1/4" |
| 1010STD |
1" |
1-3/4" |
1" |
1/8" |
2000 |
1 1/2" |
3" |
2" |
1/4" |
| 1410 |
1" |
1-3/4" |
1" |
1/8" |
1513 |
1 1/2" |
3" |
2" |
1/4" |
| 1000LW |
1" |
13/16" |
1" |
1/8" |
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| 0815LSG |
1" |
2-7/16" |
1-7/16" |
1/8" |
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ORDERING INFORMATION
PLEASE CALL 1-800-253-2497 TO ORDER
THESE ITEMS
1) Select Model Series: L312 or L500
2) Select Mounting Type: Table 1
2) Select Stem Material: Table 2
4) Select Float Material: Table 3
5) Select Wiring Type: Table 4
6) Select Switch Rating: |
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| L312 |
L500 |
| 3 VA SPDT |
30 VA SPDT |
| 20 VA SPST |
50 VA SPST |
| 50 VA SPST |
100 VA SPST |
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7) Select Lead Wire Length: 12", 24" or other (specify)
8) Advise Switch Actuation Levels: |
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| Level |
Distance to Actuation level (Inches)* |
SPST Switch Operation** (Check Type) |
| N.O. |
N.C. |
| L6 |
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| L5 |
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| L4 |
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| L3 |
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| L2 |
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| ***L1 |
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| ****L0 |
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| * Measured from the bottom of the mounting plug or flange |
| ** Switch position is "normal" with unit dry (empty tank) |
| *** L1 is the distance to the lowest actuation level with mounting "up" and is the distance to the highest actuation level with mounting "down" |
| **** L0= length overall, measured from the bottom of the mounting plug or flange to the end of the unit |
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9) Specify if junction box option required:
WP= White Polypropylene rated NEMA 4X ( excellent resistance to acids,
alkalines and many process chemicals. Temperature rating is 198°F).
AL= Die cast Aluminum rated NEMA 4, 7, & 9
For assistance call 978-568-3400
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