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DWYER 291/293/294

Photo DWYER 291/293/294 Description DWYER 291/293/294 Specifications DWYER 291/293/294 Model Chart DWYER 291/293/294 User Manual for DWYER 291/293/294 Related instruments to DWYER 291/293/294

DWYER 291/293/294 welded chamber level control

DWYER 291/293/294 welded chamber level control

Inexpensive yet rugged construction in a welded chamber control. The Series 291/293/294 Welded Chamber Level Control is specifically designed for single stage operation where pressure does not exceed 350 psig (24 bar) at 100°F (38°C) or 300 psig (21 bar) at 600°F (315°C) available with a variety of hermetically sealed snap switch or mercury switch circuits protected by a general purpose, weatherproof or explosion-proof enclosure and will accommodate specific gravities down to 0.60.

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Made in USA. brand DWYER, model 291/293/294

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.

Advantages

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 291/293/294

PRODUCT APPLICATIONS

  • Refineries
  • Chemical Plants
  • Power Generating Stations
  • Water Treatment Facilities

Technical specifications of DWYER 291/293/294

  • C1-60: Minimum specific gravity. Process pressure 350 psig (24 bar) at 100°F (38°C), 300 psig (21 bar) at 600°F (315°C).
  • Switch Type: Snap action or mercury. See Model Chart.
  • Electrical Rating: See Model Chart.
  • Wiring Connections: G, WT or E enclosure, terminal block. EV enclosure 18″ (460 mm) leads.
  • Process Connection: 1″ NPT (socket weld hubs or flanged optional).
  • Enclosures: G: painted steel and aluminum; WT: painted steel, aluminum and neoprene; E: aluminum; EV: aluminum and neoprene.
  • Wetted Parts: C1 construction, carbon steel, 303SS, 304SS, 430SS.
  • Weight: 291: 10 lb (4.5 kg); 293: 15 lb (6.8 kg); 294: 17 lb (7.7 kg).

Model Chart DWYER 291/293/294

EXAMPLE 291 WT 7810 C1 60 291-WT-7810-C1-60 Liquid Level Control, welded carbon steel chamber, weatherproof enclosure, SPDT snap switch, fixed deadband, automatic reset, operating pressure 350 psig (24 bar) at 100°F (38°C), 300 psig (21 bar) at 600°F (315400°C), side/bottom 1″ NPT, minimum specific gravity 0.60.
CONNECTION 291 One Vertical and One Horizontal 1″ NPT
293 One Vertical and One Horizontal Flanged Connection
294 Two Vertical Flanged Connections
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
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)		 48XXBN Single Stage Mercury Switch, see chart A
78XXBN Single Stage, Snap Switch, see chart B
98XXBN Single Stage, High Capacity DC Snap Switch, see chart B
CHAMBER MATERIAL C1 Carbon Steel Body
C216 316SS Body
MINIMUM
SPECIFIC
GRAVITY		 60 0.60 Specific Gravity (291 only)
160 0.60 Specific Gravity & 150# Flange (293, 294 only)
360 0.60 Specific Gravity & 300# Flange (293, 294 only)
OPTIONS H2 H2 Socket Weld Hub (291, 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
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CHARTS A & B – ELECTRICAL CIRCUITS AND RATINGS

SWITCH TYPE
SWITCH ACTION
ELECTRICAL RATINGS IN AMPS
ORDERING CODE
AC
DC
120V
240V
440V
30V
125V
250V
CHART A
Mercury Contacts		 SP-ST open on level FALL
10
5
3†
10
5
-4821BN
SP-ST open on level RISE
10
5
3†
10
5
-4820BN
SP-DT one switch
4
2
1†
4
2
-4810BN
SP-DT two switches E.I.*
10
5
3†
10
5
-4815BN
DP-ST two switches E.I.* open on level FALL
10
5
3†
10
5
-4813BN
DP-ST two switches E.I.* open on level RISE
10
5
3†
10
5
-4814BN
DP-DT two SP-DT switches
4
2
1†
4
2
-4806BN
CHART B
snap action contacts		 SP-DT one switch
12
5
3†
0.5**
0.25**
-7810BN
DP-DT two SP-DT switches
12
5
3†
0.5**
0.25**
-7806BN
SP-DT one hermetically sealed switch
5
5
5**
-7810HM
DP-DT two hermetically sealed SP-DT switches
5
5
5**
-7806HM
DP-DT two SP-DT switches
10
3
10‡
3‡
-9806BN
SP-DT one switch
10
3
10‡
3‡
-9810BN
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User Guide and Instruction manual for DWYER 291/293/294

You can request the necessary certificates, documentation, instructions and user guide for DWYER 291/293/294 using the special form.

You can buy DWYER 291/293/294 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 291/293/294 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