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DWYER 205

Photo DWYER 205 Description DWYER Specifications DWYER Model Chart DWYER User Manual for DWYER 205 Related instruments to DWYER 205

DWYER 205 welded construction

DWYER 205 welded construction

Long life and reliable operation is inherent in the design of the 205 series. The heavy duty welded carbon steel chamber provides a control to operate up to 1250 psi (86 bar) and process temperature up to 650°F (343°C), 400°F (205°C) at the electrical head assembly. The use of an external magnet reduces the possibility of magnetic particle build up inside the armature tube and subsequent loss of operation as may occur with the internal magnet repulsion design. Choice of construction provides equipment suitable for specific gravity as low as (0.75). 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/voltage DC; high current DC; or high temperature applications. Check the current chart for the switch best suited for your application. Standard process connections are combination 1″ NPT and 1″ socket weld hubs. Flanged connections are offered as an option. Contact factory for ANSI B31.1.

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Made in USA. brand DWYER, model 205

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

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

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Description of DWYER 205

PRODUCT APPLICATIONS

  • Refineries, chemical plants, power generating stations, water treatment plants, mixing systems, scrubbers, accumulators, condensate recovery, industrial tanks and vessels.

Technical specifications of DWYER 205

  • C1-75: Minimum specific gravity 0.75. Process pressure 1250 psig (86 bar) @ 100°F (38°C), 650°F (343°C).*
  • Temperature Limit: Ambient Temperature: 212° F (100°C); Process Temperature: up to 650°F (343°C).
    *Heat fins (HF) and/or high temperature switches should be considered for process temperatures above 500°F (260°C).
  • Switch Type: Snap action or mercury. See charts A and B.
  • Electrical Rating: See charts A and B.
  • 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 chart C.
  • Enclosures: G, painted steel and aluminum; WT, painted steel, aluminum and neoprene; E, aluminum; EV, aluminum and neoprene.
  • Weight: 205, 40 lb (18 kg); 207, 50 lb (22.7 kg); 208, 57 lb (25.8 kg).
  • Agency Approval: UL.
  • Suggested Specifications: Liquid level control shall be 205 (207) (208) Series with combination 1″ NPT/socket weld hubs (flanged) process connections. Chamber shall be welded suitable for operation at 1250 psig (86 bar) at 100°F (38°C), 650°F (343°C) at a minimum specific gravity of 0.75. Circuits 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 205

EXAMPLE 205 WT 7810 10 C1 75 205-WT-7810-10-C1-75 Liquid Level Control, welded carbon steel chamber, weatherproof enclosure, SPDT snap switch, fixed deadband, automatic reset, side/bottom process connections, combination 1” NPT/socket weld hubs, minimum specific gravity 0.75, operating pressure 1250 psig (86 bar) at 650ºF (343ºC).
CONNECTION 205 Liquid level control
ENCLOSURE G General purpose, NEMA 1
WT Weatherproof, NEMA 3R, 4, 4X (Not CSA)
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, see chart B.
98XX XX Two stage, high capacity DC snap switch, see chart B.
10XX Single stage, high temperature snap switch, see chart B.
10XX XX Two stage, high temperature snap switch, see chart B.
CHAMBER
MATERIAL		 Refer to chart C below for pressure/temperature ratings
C1 Carbon steel body
HFC1 Heat fins carbon steel body
MINIMUM SPECIFIC
GRAVITY		 75 0.75 specific gravity
OPTIONS STW SS tag wired
01 Breather only (E-Housing only)
02 Drain only (E-Housing only)
12 Breather and drain (E-Housing only)
23720 Fungus proofing special 23720
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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
125V
250V
LOWER
UPPER
CHART A
Mercury Contacts		 SP-ST open on level FALL
10
5
3†
 10
5
-4821
-4821
-21
UL
SP-ST open on level RISE
10
5
3†
10
5
-4820
-4820
-20
UL
SP-DT one switch
4
2
1†
 4
2
-4810
-4810
-10
UL
SP-DT two switches E.I.*
10
5
3†
 10
5
-4815
-4815
-15
UL
DP-ST two switches E.I.* open on level FALL
10
5
3†
10
5
-4813
-4813
-13
UL
DP-ST two switches E.I.* open on level RISE
10
5
3†
 10
5
-4814
-4814
-14
UL
DP-DT two SP-DT switches
4
2
1†
 4
2
-4806
-4806
-06
UL
CHART B
snap action contacts		 SP-DT one switch
12
5
3†
 0.5**
0.25**
-7810
-7810
-10
UL
DP-DT Two SP-DT switches
12
5
3†
 0.5**
0.25**
-7806
-7806
-06
UL
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
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CHART C

SERIES
MOUNTING STYLE
MINIMUM SPECIFIC GRAVITY
PRESSURE RATING AT
FLANGE CLASS (psi)
ORDER CODE
38°C
100°F
400°F
650°C
205
1″ NPT
0.75
1250 psi
86 bar
1250 psi
86 bar
—
C1-75
207
208
FLANGED
0.75
275 psi
19 bar
100 psi
7 bar
150
C1-175
207
208
FLANGED
0.75
720 psi
50 bar
425 psi
29 bar
300
C1-375
207
208
FLANGED
0.75
1250 psi
86 bar
1030 psi
71 bar
600
C1-675
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User Guide and Instruction manual for DWYER 205

You can request the necessary certificates, documentation, instructions and user guide for DWYER 205 using the special form.

You can buy DWYER 205 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 205 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