Mercoid Series
102/1102 Flanged
Chamber Type Level Control
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| Pressure
to 400 psig (28 bar), Temperature to 425°F (218°C),
Hermetically Sealed Switches, Series 102 |
| Minimum
Specific Gravity: 0.60, Series 1102 Minimum Specific Gravity:
0.40 |
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|
 By
unique design, you can remove just four bolts from the
inspection plate to examine the float and chamber for cleaning
or wear without disconnecting the piping or electrical circuitry.
They 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 316SS 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. Dimensional Information
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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: 425°F (218°C).
Pressure Limit: 300 psig (20.7 bar). Optional rating to 400 psig (27.6
bar).
Enclosure Rating: NEMA 4X. 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: 12A @ 120 VAC, 5A @ 240 VAC, 0.5A @ 125
VDC resistive, 0.25A @ 250 VDC resistive. Hermetically Sealed Snap Switch: 5A
@ 125 VAC, 5A @ 240 VAC, 5A @ 30 VDC resistive. Mercury Switch: 4A @ 120 VAC/DC,
2A @ 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).
Weight: 35 lb (15.9 kg).
Agency Approvals: UL.
Specific Gravity: 0.6 minimum for Series 102; 0.4 minimum for Series 1102. |
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SUGGESTED SPECIFICATIONS
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| Level Control shall be magnetically
operated and include (cast iron)(type 316 stainless steel) float
chamber with bolted inspection plate. Float shall be removable
for cleaning without disconnecting piping. Contacts shall be (snap
action type)(hermetically sealed mercury switch type). Unit shall
be Mercoid Model 102 WT-(_ _ _ _). |
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| POPULAR MODELS |
| Model
Number |
Switch
Type |
| 102-WT-7810-C-60 |
SPDT Snap |
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| MODEL
CHART - SERIES 102/1102 |
| 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. |
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| 1102 |
WT |
7810 |
10 |
C1 |
40 |
|
Same as 102 Series except minimum specific
gravity is 0.40. |
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| ENCLOSURES |
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G
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General purpose, NEMA 1. |
UL |
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WT |
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Water-tight, NEMA 4, 4X. |
UL |
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E |
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Explosion-proof, Class I Groups B, C, D,
Class II Groups E, F, G, NEMA 7, 9. |
UL |
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EV |
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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) |
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48XX |
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Single stage, mercury switch, see chart A
or C below. |
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48XX |
XX |
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Two stage, mercury switch, see chart A or
C below. |
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78XX |
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Single stage, snap switch, see chart B or
D below. |
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78XX |
XX |
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Two stage, snap switch, see chart B or D
below. |
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78XXHM |
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Hermetically sealed snap switch, see chart
B below. |
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98XX |
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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. |
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98XX |
XX |
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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. |
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| CHAMBER CONSTRUCTION |
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C |
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Cast iron chamber, pressure rating 300 psig
(22 bar) at 425°F (218°C). |
UL |
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C1 |
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Cast steel chamber, pressure rating 400 psig
(28 bar) at 425°F (218°C). |
UL |
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C216 |
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Cast 316SS chamber, float and rod, armature
430SS, pressure rating 400 psig (28 bar) at 425°F (218°C). |
UL |
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60 |
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Minimum specific gravity 0.60. |
UL |
| OPTIONS |
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12 |
Breather and drain for E type enclosure.
Recommended for high humidity or outdoor service. |
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