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DWYER 1241/1243/1244 flanged chamber

A removeable stainless steel float enclosed in a flanged carbon steel chamber is featured in the durable, field proven 1241 series. External side mount series includes 1″ NPT process connections as standard or 1″ flanges as options. Pressure and temperature limits are 1440 psi (99 bar) at 100°F (38°C) and 1275 psi (87.9 bar) at 475°F (246°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.

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Made in USA. brand DWYER, model 1241/1243/1244

Fast delivery to Latvia, Estonia and Lithuania. International delivery to Europe, Asia, Africa and other continents available on request
Our warehouse is located in Riga, Latvia.

price by request

Available

Available

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

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Official distributor in Latvia

Time-tested American, European and Asian brands of control and measurent instruments

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Special price list for organisations

We offer a significant discount for trade organisations and manufacturing companies

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Worldwide shipping on request

We take care of all logistics and customs clearance. Fast delivery to Baltic countries

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After-sales service and support

Warranty service and repair, expert assistance in the operation of the instruments

Description of DWYER 1241/1243/1244

PRODUCT APPLICATIONS

  • Oil refineries, chemical plants, power generating stations, pumping stations, heat transfer systems, sanitary/waste water facilities, drip legs, hydraulic systems, boilers.

Technical specifications of DWYER 1241/1243/1244

  • Minimum Specific Gravity: 0.60.
  • Switch Type: Snap action or mercury switch. See charts A and B.
  • Electrical Ratings: See charts A and B.
  • Wiring Connections: > G, WT or E enclosure, terminal block;
    EV enclosure, 18″ (460 mm) leads.
  • Process Connections:
    1″ NPT standard (flanges optional); See model chart.
    Enclosure Rating: See model chart.
  • Enclosure:
    > 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: 1241, 34 lb (15 kg); 1243, 44 lb (20 kg); 1244, 51 lb (23 kg).
  • Suggested Specifications: Liquid level control shall be 1241 (1243) (1244) Series with flanged carbon steel chamber. Process connections shall be 1″ NPT (socket weld hub) (flanged). Unit shall be suitable for operation at 1440 psi (99 bar) at 100°F (38°C); 1275 psi (87.9 bar) at 475°F (246°C) with a minimum specific gravity of 0.60. Switch mechanism shall be gravity return and shall be activated by a stainless steel float. Circuit shall be (hermetically sealed) snap action (mercury) switch, (SPST) (SPDT) (DPDT). Enclosure shall be general purpose (weatherproof) (explosion-proof) (explosionproof) (vapor-proof).

Model Chart DWYER 1241/1243/1244

EXAMPLE 1241 WT 7810 C1 75 L12 1241-WT-7810-10-C1-60 Liquid Level Control, flanged carbon steel chamber, weatherproof enclosure, SPDT snap action switch, fixed deadband, automatic reset.  Operating pressure 1440 psig @ 100°F, side/bottom 1″ NPT process connections, minimum s.g. 0.60.
CONNECTION 1241 Side/bottom process connections. 1″ NPT hubs.
1243 1″ 600# flanges side/bottom process connection.
1244 1″ 600# flanges side/side process connection.
1244T 1244T Liquid Level Control
ENCLOSURES  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
EV 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)
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
10XX Single stage. High temperature snap switch. Continuous rating 800°F (425°C). See Chart B.
211-C1-60 type rated at 175 psi (12 bar).
10XX-XX Two stage. High temperature snap switch. Continuous rating 800°F (425°C). See Chart B.
211-C1-60 type rated at 175 psi (12 bar).
CHAMBER MATERIAL C1 Carbon Steel Body
HFC1 Heat Fins & Carbon Steel Body
C216 316SS Body
SPECIFIC
GRAVITY
1241 60 0.60 Specific Gravity (1241 only)
1243,1244 660 0.60 Specific Gravity & 600# Flange (1243, 1244 only)
OPTIONS STW SS Tag Wired
E 01 Breather Only (E-Housing only)
E 02 Drain Only (E-Housing only)
E 12 Breather & Drain (E-Housing only)
23720 Fungus Proofing
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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
DP-DT Two SP-DT switches 2 2 0.4** 0.25** -1006 -1006 -06
SP-DT One switch 2 2 0.4** 0.25** -1010 -1010 -10
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User Guide and Instruction manual for DWYER 1241/1243/1244

You can request the necessary certificates, documentation, instructions and user guide for DWYER 1241/1243/1244 using the special form.

You can buy DWYER 1241/1243/1244 in Latvia at a favourable price in «OLIL SIA» by leaving a request on the website, by phone +371 672 70580 or by email . DWYER 1241/1243/1244 price are subject to change depending on exchange rates. We deliver instruments by transport companies in Latvia, Estonia and Lithuania. Worldwide shipping to Europe, Asia, Africa, North and South America available on request.

See also: Level Switches