Mercoid Series 211 / 213 / 214
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Flanged Chamber Level Control |
External Mount, Pressure to 450 psig (31 bar), Temperature to 500°F (260°C) |
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A removable stainless steel float enclosed in a flanged carbon steel chamber is featured in the durable, field proven 211 Series. External side mount series includes 1" NPT process connections as standard, or with socket weld hubs; or, 1" flanges as options. Pressure and temperature limits are 450 psi (31 bar) at 100°F (38°C), and 300 psi (21 bar) at 500°F (260°C). Minimum specific gravity for all models is 0.60. The models shown can be ordered with a variety of electrical arrangements including SPST, SPDT, or DPDT circuits in hermetically sealed snap action or mercury contacts. Switches can be ordered open on level rise or fall. Single pole double throw electrically independent circuits are available as well as low current or high DC current applications. A full range of enclosures are offered including general purpose NEMA 1; weatherproof NEMA 4X; (explosion-proof) and (explosion-proof/vapor-proof) Groups B, C, D, E, F, G, NEMA 7, 9.
{module_literature,i,179782}
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Series 211 Specifications: |
Minimum Specific Gravity: 0.60
Switch Type: Snap or mercury switch. See charts A and B on Model Chart.
Electrical Rating: See charts A and B on Model Chart.
Wiring Connections: G, WT or E enclosure, terminal block. EV enclosure, 18" (460 mm) leads.
Process Connections: 1" NPT standard (socket weld hubs or flanges optional). See Model Chart.
Enclosures: G, painted steel and aluminum. WT, painted steel, aluminum and neoprene. E, aluminum. EV, aluminum and neoprene.
Wetted Parts: C1 construction. Chamber: carbon steel; Trim: 303SS, 304SS, and 430SS (316SS and 430SS optional).
Weight: 211: 34 lb (15 kg); 213: 44 lb (20 kg); 214: 51 lb (23 kg)
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Model Chart (click to open/close)
EXAMPLE |
211 |
WT |
7810 |
C1 |
60 |
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211-WT-7810-C1-60 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 0.60. |
ENCLOSURE |
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G |
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General Purpose, NEMA 1 |
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WT |
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Weatherproof, NEMA 3R, 4, 4X |
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E |
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Explosion-proof, NEMA 7, 9, Class I Groups B, C, D, Class II Groups E, F, G |
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EV |
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Explosion-proof/Vapor-proof, NEMA 7, 9, Class I Groups B, C, D, Class II Groups E, F, G |
CIRCUITS
(for electrical circuits
see charts A & B below) |
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48XX |
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Single Stage Mercury Switch, see chart A |
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48XX-XX |
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Two Stage, Mercury Switch, see chart A |
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78XX |
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Single Stage, Snap Switch, see chart B |
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78XX-XX |
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Two Stage, Snap Switch, see chart B |
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78XXHM |
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Hermetically Sealed Snap Switch, see chart B |
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98XX |
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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 |
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98XX-XX |
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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 |
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10XX |
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Single Stage, High Temp. Snap Switch, continuous rating 800°F (425°C), see chart B |
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10XX-XX |
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Two Stage, High Temp. Snap Switch, continuous rating 800°F (425°C), see chart B |
CHAMBER MATERIAL |
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C1 |
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Carbon Steel Body |
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C216 |
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316SS Body |
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HFC1 |
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Heat Fins & Carbon Steel Body |
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HFC216 |
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Heat Fins & 316SS Body |
MINIMUM
SPECIFIC
GRAVITY |
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60 |
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0.60 Specific Gravity |
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160 |
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0.60 Specific Gravity & 150# Flange |
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360 |
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0.60 Specific Gravity & 300# Flange |
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660 |
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0.60 Specific Gravity & 600# Flange |
OPTIONS |
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H2 |
H2 Socket Weld Hub |
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R |
Manual Reset, Single Stage |
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R1 |
Manual Reset, Lower Stage 2-Stage Control |
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R2 |
Manual Reset, Upper Stage 2-Stage Control |
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R3 |
Manual Reset, Both Stages 2-Stage Control |
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STW |
SS Tag Wired |
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01 |
Breather Only |
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02 |
Drain Only |
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12 |
Breather & Drain |
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23720 |
Fungus Proofing |
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Charts A & B - Electrical Circuits and Ratings (click to open/close)
SWITCH TYPE
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SWITCH ACTION
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ELECTRICAL RATINGS IN AMPS
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ORDERING CODE
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AC
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DC
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SINGLE STAGE
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TWO STAGE
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120V
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240V
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440V
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30V
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125V
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250V
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LOWER
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UPPER
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CHART A
Mercury Contacts
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SP-ST open on level FALL |
10
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5
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3†
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10
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5
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-4821
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-4821
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-21
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SP-ST open on level RISE |
10
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5
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3†
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10
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5
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-4820
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-4820
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-20
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SP-DT one switch |
4
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2
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1†
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4
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2
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-4810
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-4810
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-10
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SP-DT two switches E.I.* |
10
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5
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3†
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10
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5
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-4815
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-4815
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-15
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DP-ST two switches E.I.* open on level FALL |
10
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5
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3†
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10
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5
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-4813
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-4813
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-13
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DP-ST two switches E.I.* open on level RISE |
10
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5
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3†
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10
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5
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-4814
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-4814
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-14
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DP-DT two SP-DT switches |
4
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2
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1†
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4
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2
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-4806
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-4806
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-06
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CHART B
snap action contacts
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SP-DT one switch |
12
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5
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3†
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0.5**
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0.25**
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-7810
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-7810
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-10
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DP-DT two SP-DT switches |
12
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5
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3†
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0.5**
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0.25**
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-7806
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-7806
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-06
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SP-DT one hermetically sealed switch |
5
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5
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5**
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-7810HM
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-7810HM
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-10HM
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DP-DT two hermetically sealed SP-DT switches |
5
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5
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5**
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-7806HM
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-7806HM
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-06HM
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DP-DT two SP-DT switches |
10
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3
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10‡
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3‡
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-9806
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-9806
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-06
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SP-DT one switch |
10
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3
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10‡
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3‡
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-9810
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-9810
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-10
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DP-DT Two SP-DT switches |
2
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2
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0.4**
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0.25**
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-1006
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-1006
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-06
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SP-DT one switch |
2
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2
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0.4**
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0.25**
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-1010
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-1010
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-10
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†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. |
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