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DWYER 1261/1263/1264

Photo DWYER 1261/1263/1264 Description DWYER 1261/1263/1264 Specifications DWYER 1261/1263/1264 Model Chart DWYER 1261/1263/1264 User Manual for DWYER 1261/1263/1264 Related instruments to DWYER 1261/1263/1264

DWYER 1261/1263/1264 welded chamber level control

DWYER 1261/1263/1264 welded chamber level control
High pressure capability in a heavy duty welded carbon steel chamber provides a rugged heavy duty control to operate up to 1750 psi (121 bar) at 100°F (38°C), and 1650 psi (114 bar) at 500°F (260°C) with a minimum specific gravity of 0.60. Electrical enclosures are suited for general purpose NEMA 1, weatherproof NEMA 4X, explosion-proof or explosion-proof – vapor proof NEMA 7, 9 groups B, C, D, E, F, G, Division I and II requirements. Electrical requirements are met by use of hermetically sealed snap action or mercury switches in a variety of actions including SPST, SPDT, DPDT and DPST arrangements. Optional circuits are available for low current, low DC voltage, high DC current, or high temperature applications. Check the model chart for the switch best suited for your application.
			

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Made in USA. brand DWYER, model 1261/1263/1264

International delivery to Europe, Asia and Africa.
Our warehouses are located in the UK, UAE and Senegal.

price by request

Available

Available

Founded in 1931, DWYER manufactures equipment for measurement, conversion and control – pressure, temperature, level, flow.

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Only the best I&C brands

Our company is a global supplier of control and measuring instruments from well-known world brands

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Discounts for organisations

We sell high-tech equipment at very low prices. We provide really advantageous conditions for partners

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Fast delivery across the Europe & Asia

We take care of all logistics and customs clearance of I&C solutions from Europe, USA, China and India

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Professional advice on device selection

Our specialists are ready to advise you on any technical question. We can find an analogue of any device

Description of DWYER 1261/1263/1264

PRODUCT APPLICATIONS

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

Technical specifications of DWYER 1261/1263/1264

  • 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 DWYER 1261/1263/1264

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)
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
Expand Table

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
Expand Table

User Guide and Instruction manual for DWYER 1261/1263/1264

You can request the necessary certificates, documentation, instructions and user manuals for DWYER 1261/1263/1264 using the special form.

You can buy DWYER 1261/1263/1264 in UK or Europe at a favourable price in «DOLCHETRADE» by leaving a request on the website, by phone +441225535040 or by email . DWYER 1261/1263/1264 price are subject to change depending on exchange rates. We deliver instruments by transport companies in the United Kingdom and Europe.

See also: Level Switches