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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
| 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 | One Vertical and One Horizontal 1" NPT | |||||
| 1263 | One Vertical and One Horizontal Flanged Connection | ||||||
| 1264 | Two Vertical Flanged Connections | ||||||
| 1264T | |||||||
| 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 | ||||||
| MINIMUM SPECIFIC GRAVITY |
60 | 0.60 Specific Gravity (1261 only) | |||||
| 660 | 0.60 Specific Gravity & 600# Flange (1263, 1264 only) | ||||||
| OPTIONS | H1 | 1" NPT Vent (1261, 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 |
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