重型焊接碳钢腔室的高压能力提供了坚固的重型控制，在100°F(38°C)下可运行1750 psi (121 bar)，在500°F(260°C)下可运行1650 psi (114 bar)，最低比重为0.60。 电气外壳适用于通用NEMA 1，耐候型NEMA 4X，防爆或防爆型NEMA 7, 9组B, C, D, E, F, G, I和II级要求。电气要求是通过使用密封的快速动作或水银开关在各种行动，包括SPST, SPDT, DPDT和DPST安排。 可选电路可用于低电流、低直流电压、高直流电流或高温应用。 检查模型图，找出最适合的开关。
C1-60:Minimum specific gravity 0.60. Process pressure 1750 psig (121 bar) at 100°F (38°C), 1650 psig (114 bar) at 500°F (260°C).
Temperature Limit:Ambient Temperature: 212°F (100°C); Process Temperature: up to 500°F (260°C).
Switch Type:Snap switch or mercury. See Model Chart.
Electrical Rating:Electrical Rating: See Model Chart.
Wiring Connections:G, WT or E enclosure: terminal block; EV enclosure: 18" (460 mm) leads.
Process Connections:Combination 1" NPT/socket weld hubs or flanges. See Model Chart.
Enclosures:G: painted steel and aluminum; WT: painted steel, aluminum and neoprene; E: aluminum; EV: aluminum, neoprene.
Wetted Parts:C1 construction is carbon steel, 303SS, 304SS and 430SS.
Weight:1261: 79 lb (36 kg); 1263: 89 lb (40 kg); 1264: 92 lb (42 kg).
Suggested Specifications:
Liquid level control shall be 1261 (1263) (1264) Series with 1" combination NPT/socket weld hub (flanged) process connections. Chamber shall be welded and suitable for operation at 1650 psi (114 bar) and 500°F (260°C) with a minimum specific gravity of 0.60. Circuit shall be (hermetically sealed) snap action (mercury) switch (SPST) (SPDT) (DPDT). Enclosure shall be general purpose (weatherproof) (explosion-proof) (explosion-proof – vapor proof). Switch mechanism shall be gravity return and shall be activated by a stainless steel float
Model Chart
| EXAMPLE |
1261 |
WT |
7810 |
C1 |
60 |
|
1261-WT-7810-C1-60 Liquid Level Control, weatherproof enclosure, SPDT snap switch, fixed deadband, automatic reset, operating pressure 1750 psig (121 bar) at 100°F (38°C), 1650 psig (114 bar) at 500°F (260°C), side/bottom process connections, 1" NPT, minimum specific gravity 0.60. |
| CONNECTION |
1261 |
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One Vertical and One Horizontal 1" NPT |
| 1263 |
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One Vertical and One Horizontal Flanged Connection |
| 1264 |
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Two Vertical Flanged Connections |
| 1264T |
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| 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. CSA approved Groups C, D, E, F, G only. |
| |
EV |
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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) |
|
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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 |
| 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 |
MINIMUM
SPECIFIC
GRAVITY |
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60 |
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0.60 Specific Gravity (1261 only) |
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660 |
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0.60 Specific Gravity & 600# Flange (1263, 1264 only) |
| OPTIONS |
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H1 |
1" NPT Vent (1261, steel housing only) |
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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 (E-Housing only) |
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02 |
Drain Only (E-Housing only) |
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12 |
Breather & Drain (E-Housing only) |
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23720 |
Fungus Proofing |
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