Series 1211/1213/1214 Flanged Chamber Level Control

External Mount, Pressure to 450 psig (31 bar), Temperature to 500°F (260°C)

Low minimum specific gravity of 0.40 and rugged flanged chamber for inspection purposes helps insure superior long term performance. Control can be used at maximum process pressure of 450 psig (31 bar) at 100°F (38°C), and 300 psig (21 bar) at 500°F (260°C). Standard 1" NPT connections are provided for mounting. 19 socket weld hubs or 1" flanges are available as options. Hermetically sealed snap switch or mercury switches are provided in a variety of circuit configurations such as SPST, SPDT, or DPDT. High or low DC applications can also be accommodated. General purpose, weatherproof, explosion-proof, or explosion-proof – vapor proof enclosures are provided.

Product Applications

  • Oil Refineries
  • Chemical Plants
  • Power Generating Stations
  • Pumping Stations
  • Heat Transfer Systems
  • Sanitary/Waste Water Facilities
  • Drip Legs
  • Hydraulic Systems
  • Boilers

Models & Ordering

Build Your Custom Part. Use our Product Configurator

Specifications

C1-40:
Minimum specific gravity 0.40. Process pressure 450 psig (31 bar) at 100°F (38°C), 300 psig (21 bar) at 500°F (260°C).
Temperature Limits:
Ambient Temperature: 212°F (100°C); Process Temperature: up to 500°F (260°C).
Switch Type:
Snap action or mercury; see Model Chart.
Electrical Rating:
See Model Chart.
Wiring Connections:
G, WT or E enclosure, terminal block. EV enclosure, 18" (460 mm) leads.
Process Connections:
1" NPT or flanges. See model chart. (1" socket weld-hubs optional).
Enclosures:
G: painted steel and aluminum; WT: painted steel, aluminum and neoprene; E: aluminum; EV: aluminum, neoprene.
Wetted Parts:
C1 construction. Chamber: carbon steel. Trim: 303SS, 304SS, and 430SS (316SS and 430SS optional).
Weight:
1211: 34 lb (15.5 kg); 1213: 44 lb (20 kg); 1214: 47 lb (21.4 kg).
Suggested Specifications:
Liquid level control shall be 1211 (1213) (1214) Series with flanged carbon steel chamber. Process connections shall be 1" NPT (socket weld hub) (flanged). Unit shall be suitable for operation at 450 psi (31 bar) and 100°F (38°C), 300 psi (21 bar) and 500°F (260°C) with a minimum specific grav ity of 0.40. Switch mechanism shall be gravity return and shall be activated by a stainless steel float. Circuit shall be (hermetically sealed) snap action (mercury) switch, (SPST) (SPDT) (DPDT). Enclosure shall be general purpose (weatherproof ) (explosionproof) (explosion-proof – vapor proof).

Model Chart

 
EXAMPLE 1211 WT 7810 C1 40   1211-WT-7810-C1-40 Liquid Level Control, weatherproof enclosure, SPDT snap switch, fixed deadband, automatic reset, operating pressure 450 psig (31 bar) at 100°F (38°C), 300 psig (21 bar) at 500°F (260°C), side/bottom process connections, 1" NPT, minimum specific gravity 0.40.
CONNECTION 1211           One Vertical and One Horizontal 1" NPT
1213           One Vertical and One Horizontal Flanged Connection
1214           Two Vertical Flanged Connections
ENCLOSURE    G         General Purpose, NEMA 1
  WT         Weatherproof, NEMA 3R, 4, 4X
  E         Explosion-proof, NEMA 7, 9, Class I Groups B, C, D, Class II Groups E, F, G. CSA approved Groups C, D, E, F, G only.
  EV         Explosion-proof/Vapor-proof, NEMA 7, 9, Class I Groups B, C, D, Class II Groups E, F, G. CSA approved Groups C, D, E, F, G only.
CIRCUITS
(for electrical circuits
see charts A & B below)
    48XX       Single Stage Mercury Switch, see chart A
    48XX-XX       Two Stage, Mercury Switch, see chart A
    78XX       Single Stage, Snap Switch, see chart B
    78XX-XX       Two Stage, Snap Switch, see chart B
    78XXHM       Hermetically Sealed Snap Switch, see chart B
    98XX       Single Stage, High Capacity DC Snap Switch, use heat fins (HF) if process temperature exceeds 350°F (177°C), do not exceed 450°F (232°C), see chart B
    98XX-XX       Two Stage, High Capacity DC Snap Switch, use heat fins (HF) if process temperature exceeds 350°F (177°C), do not exceed 450°F (232°C), see chart B
CHAMBER MATERIAL       C1     Carbon Steel Body
      C216     316SS Body
      HFC1     Heat Fins & Carbon Steel Body
      HFC216     Heat Fins & 316SS Body (1211 only)
MINIMUM
SPECIFIC
GRAVITY
        40   0.40 Specific Gravity (1211 only)
        140   0.40 Specific Gravity & 150# Flange (1213, 1214 only)
        340   0.40 Specific Gravity & 300# Flange (1213, 1214 only)
        640   0.40 Specific Gravity & 600# Flange (1213, 1214 only)
OPTIONS           H2 H2 Socket Weld Hub (1211, steel housing only)
          R Manual Reset, Single Stage
          R1 Manual Reset, Lower Stage 2-Stage Control
          R2 Manual Reset, Upper Stage 2-Stage Control
          R3 Manual Reset, Both Stages 2-Stage Control
          STW SS Tag Wired
          01 Breather Only (E-Housing only)
          02 Drain Only (E-Housing only)
          12 Breather & Drain (E-Housing only)
          23720 Fungus Proofing

CHARTS A & B - ELECTRICAL CIRCUITS AND RATINGS
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
-4820
-4820
-21
SP-ST open on level RISE
10
5
3†
 
10
5
-4821
-4821
-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
-4814
-4814
-13
DP-ST two switches E.I.* open on level RISE
10
5
3†
 
10
5
-4813
-4813
-14
DP-DT two SP-DT switches
4
2
1†
 
4
2
-4806
-4806
-06
CHART B
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
-9806
-06
SP-DT one switch
10
3
 
 
10‡
3‡
-9810
-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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