Series 102/1102 Flanged Chamber Type Level Control

Operating Pressures to 300 PSIG

The SERIES 102 & 1102 Flanged Chamber Type Level Controls are external cage type level switches which are self-contained in a side mount body. The sturdy 102 Series operates at pressure to 400 psi (28 bar) and temperatures to 425°F (218°C). The 102 Series will operate to a minimum specific gravity of 0.60. The 1102 Series will operate to a specific gravity of 0.40 under the same operating pressure and temperature. The 102 and 1102 Series contain a stainless steel float and offer a choice of cast iron, cast steel, or inexpensive cast 316 SS float chamber. These series are well suited for applications where ease of accessibility is desired for pressure or vacuum vessels. Electrical circuits using hermetically sealed snap action or mercury contacts are available in a variety of actions including SPST, SPDT, DPDT and DPST combinations. Optional circuits are available for low current, low voltage direct circuits; high direct current or high temperature applications. Electrical enclosures provide general purpose; weatherproof, explosion-proof or explosion-proof/vapor proof capability. The 102 design also features three 1" NPT process connections for side/side or side/bottom piping. When using the side/side process connection, the bottom 1" NPT connection can be used as a drain.

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Product Applications

  • Pressure or vacuum vessels
  • Chemical processing plants
  • Steam and electric generating stations
  • Hydraulic accumulators
  • Vapor-liquid separators
  • Scrubbers
  • Oil refineries
  • Storage tanks

Models & Ordering

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Model Description Usually Ships Price Order
102-WT-4815-C-60
Ships: 1-2 Weeks
Price: $1,275.00
Flanged chamber type level control, SPDT mercury switch. 1-2 Weeks $1,275.00 Order
102-WT-7810-C-60
Ships: Same Day
Price: $1,198.50
Flanged chamber type level control, SPDT snap switch. Same Day $1,198.50 Order

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Specifications

Service:
Compatible liquids. Cast iron is not for use with lethal or flammable substances either liquid or gaseous.
Wetted Materials:
Body: Cast iron, Optional cast steel or 316 SS; Float and trim: 303 SS, 304 SS, 316 SS, and 430 SS. Option of all 316 SS; Body gasket: Carbon.
Temperature Limit:
Ambient Temperature: 212°F (100°C); Process Temperature: 425°F (218°C).
Pressure Limit:
300 psig (20.7 bar). Optional rating to 400 psig (27.6 bar).
Enclosure Rating:
NEMA 4X (IP66). Optional general purpose or explosion-proof.
Repeatability:
±1/4" (6.4 mm)
Switch Type:
SPDT snap switch, hermetically sealed snap switch or mercury switch. Optional DPDT or two stage.
Electrical Rating:
Snap switch: 12 A @ 120 VAC, 5 A @ 240 VAC, 0.5 A @ 125 VDC resistive, 0.25 A @ 250 VDC resistive. Hermetically sealed snap switch: 5 A @ 125 VAC, 5 A @ 240 VAC, 5 A @ 30 VDC resistive. Mercury switch: 4 A @ 120 VAC/DC, 2 A @ 240 VAC/DC. Higher contact ratings available for the mercury switch.
Electrical Connections:
Screw terminal.
Conduit Connection:
3/4" female NPT.
Process Connection:
1" female NPT.
Mounting Orientation:
Vertical.
Set Point Adjustment:
±1" (25.4 mm)
Specific Gravity:
0.6 minimum for Series 102; 0.4 minimum for Series 1102.
Weight:
35 lb (15.9 kg).
Agency Approvals:
UL.

Features

  • Unique design allows the simple removal of four bolts from the inspection plate to examine the float and chamber for cleaning or wear without disconnecting the piping or electrical circuitry
  • Electrical enclosures provide general purpose, weatherproof, explosion-proof or explosion-proof/vapor proof capability as well as cost effective cast 316SS float chamber option
  • Electrical circuits using hermetically sealed snap action or mercury contacts are available in a variety of actions including SPST, SPDT, DPDT and DPST combinations
  • The 102 design features three 1" NPT process connections for side/side or side/bottom piping allowing the bottom 1" NPT connection to be used as a drain when using the side/side process connection

Model Chart

 
EXAMPLE 102 WT 7810 10 C1 60 12 102-WT-7810-C1-60 Liquid Level Control with flanged chamber enclosure, SPDT snap action switch, fixed deadband, automatic reset, Operating pressure 400 psig (28 bar) at 425°F (218°C), side/bottom, side/side mounting standard with 1" NPT connections, minimum specfic gravity 0.60.  
MODEL 102             Minimum specific gravity 0.60  
1102             Minimum specific gravity 0.40  
ENCLOSURES   G           General purpose, NEMA 1. UL
  WT           Water-tight, NEMA 4, 4X. UL
  E           Explosion-proof, Class I Groups B, C, D, Class II Groups E, F, G, NEMA 7, 9. UL
  EV           Explosion-proof, vapor proof, Class I Groups B, C, D, Class II Groups E, F, G, NEMA 7, 9. UL
CIRCUITS
(for electrical circuits see charts below)
    48XX         Single stage, mercury switch, see chart A or C below.  
    48XX XX       Two stage, mercury switch, see chart A or C below.  
    78XX         Single stage, snap switch, see chart B or D below.  
    78XX XX       Two stage, snap switch, see chart B or D below.  
    78XXHM         Hermetically sealed snap switch, see chart B below.  
    98XX         Single stage, high capacity DC snap switch, use heat fins (HF) if process temperature excced 350°F (177°C), do not exceed 450°F (232°C), see chart B or D below.  
    98XX XX       Two stage, high capacity DC snap switch, use heat fins (HF) if process temperature excced 350°F (177°C), do not exceed 450°F (232°C), see chart B or D below.  
CHAMBER CONSTRUCTION         C     Cast iron chamber, pressure rating 300 psig (22 bar) at 425°F (218°C). UL
        C1     Cast steel chamber, pressure rating 400 psig (28 bar) at 425°F (218°C). UL
        C2     Cast 304SS chamber.  
        C216     Cast 316SS chamber, float and rod, armature 430SS, pressure rating 400 psig (28 bar) at 425°F (218°C). UL
MINIMUM SPECIFIC GRAVITY           40   Minimum specific gravity 0.40 (1102 only)  
          60   Minimum specific gravity 0.60 (102 only) UL
OPTIONS             R Manual reset for single stage.  
            R1 Manual reset for lower stage of 2-stage controls.  
            STW Stainless steel tag (Wired)  
            01 Breather only. (E-Housing only)  
            02 Drain only. (E-Housing only)  
            12 Breather and drain for E type enclosure. Recommended for high humidity or outdoor service.  
            23720 Fungus proofing special 23720.  

CHARTS A & B - ELECTRICAL CIRCUITS AND RATINGS - SERIES 102
SWITCH TYPE
SWITCH ACTION
ELECTRICAL RATINGS IN AMPS
ORDERING CODE
 
   
AC
DC
SINGLE STAGE
TWO STAGE
 
   
120V
240V
440V
30V
125V
250V
 
LOWER
UPPER
 
CHART A
Mercury Contacts
SP-ST open on level FALL
10
5
3†
 
10
5
-4821
-4821
-21
UL
SP-ST open on level RISE
10
5
3†
 
10
5
-4820
-4820
-20
UL
SP-DT one switch
4
2
1†
 
4
2
-4810
-4810
-10
UL
SP-DT two switches E.I.*
10
5
3†
 
10
5
-4815
-4815
-15
UL
DP-ST two switches E.I.* open on level FALL
10
5
3†
 
10
5
-4813
-4813
-13
UL
DP-ST two switches E.I.* open on level RISE
10
5
3†
 
10
5
-4814
-4814
-14
UL
DP-DT two SP-DT switches
4
2
1†
 
4
2
-4806
-4806
-06
UL
CHART B
snap action contacts
SP-DT one switch
12
5
3†
 
0.5**
0.25**
-7810
-7810
-10
UL
DP-DT Two SP-DT switches
12
5
3†
 
0.5**
0.25**
-7806
-7806
-06
UL
SP-DT one hermetically sealed switch
5
5
 
5**
 
 
-7810HM
-7810HM
-10HM
 
DP-DT two hermetically sealed SP-DT switches
5
5
 
5**
 
 
-7806HM
-7806HM
-06HM
 
DP-DT two SP-DT switches
10
3
 
 
10‡
3‡
-9806
-06
 
 
SP-DT one switch
10
3
 
 
10‡
3‡
-9810
-10
 
 

†Available on special order, change 1st digit in ordering code from 4 to 5 or 7 to 8, i.e., -4820 becomes -5820, -7810 becomes -8810, etc.
‡10 amp inductive (polarized) at 125 VDC.
*Electrically Independent.
**Resistive.

CHARTS C & D - ELECTRICAL CIRCUITS AND RATINGS - SERIES 1102
SWITCH TYPE
SWITCH ACTION
ELECTRICAL RATINGS IN AMPS
ORDERING CODE
   
AC
DC
SINGLE STAGE
TWO STAGE
   
120V
240V
440V
30V
125V
250V
 
LOWER
UPPER
CHART C
Mercury Contacts
SP-ST open on level FALL
10
5
3†
 
10
5
-4821
-4821
-21
SP-ST open on level RISE
10
5
3†
 
10
5
-4820
-4820
-20
SP-DT one switch
4
2
1†
 
4
2
-4810
-4810
-10
SP-DT two switches E.I.*
10
5
3†
 
10
5
-4815
-4815
-15
DP-ST two switches E.I.* open on level FALL
10
5
3†
 
10
5
-4813
-4813
-13
DP-ST two switches E.I.* open on level RISE
10
5
3†
 
10
5
-4814
-4814
-14
DP-DT two SP-DT switches
4
2
1†
 
4
2
-4806
-4806
-06
CHART D
snap action contacts
SP-DT one switch
12
5
3†
 
0.5**
0.25**
-7810
-7810
-10
DP-DT Two SP-DT switches
12
5
3†
 
0.5**
0.25**
-7806
-7806
-06
SP-DT one hermetically sealed switch
5
5
 
5**
 
 
-7810HM
-7810HM
-10HM
DP-DT two hermetically sealed SP-DT switches
5
5
 
5**
 
 
-7806HM
-7806HM
-06HM
DP-DT two SP-DT switches
10
3
 
 
10‡
3‡
-9806
-06
 
SP-DT one switch
10
3
 
 
10‡
3‡
-9810
-10
 
†Available on special order, change 1st digit in ordering code from 4 to 5 or 7 to 8, i.e., -4820 becomes -5820, -7810 becomes -8810, etc.
‡10 amp inductive (polarized) at 125 VDC.
*Electrically Independent.
**Resistive.

Product Literature

Manuals

Catalog Pages

SDS

Approvals

Drawings

Questions

Question
Why is the minimum specific gravity important on the float level switches?
Answer
If a medium has a lower s.g. than the rated minimum for a float, the float will sink through the media and the switch will not operate.

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