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DWYER B-190

Photo DWYER B-190 Description DWYER B-190 Specifications DWYER B-190 Model Chart DWYER B-190 User Manual for DWYER B-190 Related instruments to DWYER B-190

DWYER B-190 tsingle stage top mount displacer type level control

DWYER B-190 tsingle stage top mount displacer type level control

The Series B-190 Liquid Level Switch-Control is a top mount displacer type level control. They work on the principle that submerged solids weigh less in liquids, and as the liquid level rises and their weight decreases, the tension on the spring by which they are suspended is decreased. This Series is offered in a range of cable lengths, specific gravities, circuit types and enclosure ratings.

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Made in USA. brand DWYER, model B-190

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 B-190

Operation: Mercoid® Displacer Controls use displacers that do not float on the surface of liquids, but are suspended on a coil spring. They work on the principle that submerged solids weigh less in liquids, and as the liquid level rises and their weight decreases, the tension on the spring by which they are suspended is decreased. This allows the spring to move the cable and armature upward, actuating the hermetically sealed switches. Because they work on a different principle than float type liquid level controls, displacers are not affected by turbulence, or pressure, and are excellent for applications with viscous or dirty liquids.

Dimensions are based on 316SS displacers with 4″ minimum flange type control. All dimensions are approximate and will vary depending on specific gravity, temperature, displacer material and size. Critical dimensions must be verified with the factory before placing order.

Standard Construction: 316SS displacers, 10 foot 316SS cable and stops, 49 125# CI flange: for operation in specific gravities as low as 0.5 and a maximum temperature of 200°F (93°C). For special conditions, other choices include: 316SS displacers: longer cable: monel or hastelloy cable and stops: other flange sizes, materials or pressure ratings, or 3/4″ NPT top connection in lieu of flange.

PRODUCT APPLICATIONS

  • Pumping stations
  • Foaming liquids
  • Sanitary/sewage treatment
  • Paints & varnishes
  • Agitated or turbulent fluids
  • Heavy oil refineries
  • Chemical plants
  • Power generating stations
  • Viscous or dirty liquids

FEATURES

  • Extremely versatile design
  • Displacers are suspended on a coil spring and do not float on the surface of liquids and are unaffected by turbulence or pressure
  • Excellent for applications with viscous or dirty liquids

Technical specifications of DWYER B-190

  • Service: Compatible liquids.
  • Wetted Materials: Cable, spring and stops: 316 SS. Optional Inconel® spring; Displacers: 316SS. Optional 304 SS, 316 SS, or carbon graphite.
  • Temperature Limits: Ambient Temperature: 32 to 200°F (0 to 93°C);Process Temperature: 32 to 200°F (0 to 93°C).
  • Pressure Limit: 125 psig (8.6 bar). Higher ratings available.
  • Enclosure Rating: NEMA 4X. Optional general purpose or explosion-proof.
  • Switch Type: SPDT snap switch, hermetically sealed snap switch, or mercury switch. Optional DPDT or two stage.
  • Electrical Rating: Snap switch: 12 A @ 120 VAC, 5 A @ 240 VAC, 0.5 A @ 125 VDC resistive, 0.25 A @ 250 VDC resistive; Hermetically sealed snap switch: 5 A @ 120 VAC, 5 A @ 240 VAC, 5 A @ 30 VDC resistive; Mercury switch: 4 A @ 120 VAC/DC, 2 A @ 240 VAC/DC. Higher contact ratings available for the mercury switch.
  • Electrical Connections: Screw terminal.
  • Conduit Connection: 3/4″ female NPT.
  • Process Connections: 4″ 125 cast iron flange. Other material, size, and rating flanges are available.
  • Mounting Orientation: Vertical.
  • Set Point Adjustment: Adjustable by moving displacers, see dimension chart for minimum and maximum values.
  • Specific Gravity: Standard is 1.0. Specify when ordering by replacing 1.0 in model number with specific gravity setting desired. Settable range is 0.5 to 1.2.
  • Cable Length: 10 ft (3 m) standard. Optional up to 100 ft (30.5 m).
  • Weight: General purpose or watertight enclosure with 4″ 125# cast iron flange approximately 28 lb (12.7 kg); Explosion-proof or explosion-proof/vapor-proof approximately 32 lb (14.5 kg).
  • Agency Approvals: UL, none on HM switch

Model Chart DWYER B-190

EXAMPLE A 190 WT 7810 P A 1.0 1 Series A190-WT-7810-P-A-1.0-2 Top Mounted Single Stage, displacer type liquid level control. Watertight, NEMA-4 enclosure. SPDT snap action switch, fixed deadband 3/4″ (19 mm) at 1.0 SG. Max operating temp 200 deg F (93 deg C) with 10′ SS cable and 316SS displacers, with 4″ 125# cast iron flange.
TYPE A
AA
B
BB		 4″ Flange or Larger, Fixed Differential
3″ Flange, Fixed Differential
4″ Flange or Larger, Adjustable Differential
3″ Flange, Adjustable Differential
SERIES 190 Single Stage Top Mount Displacer Type Liquid Level Control
ENCLOSURE G
WT
E
EV		 General Purpose
Watertight
Explosion-proof
Explosion-proof/Vapor-proof
CIRCUITS 48XX
78XX
78XXHM
98XX		 See Chart A below
See Chart B below
See Chart B below
See Chart B below
DISPLACERS S
S304
K
I		 316SS
304SS
Karbate (A190, B190 only)
Intrf 3-1/2 dia. x 10 (A190, B190 only)
CABLE LENGTH A
B
C
D
E
F
G		 10 ft.
15 ft.
20 ft.
25 ft.
30 ft.
40 ft.
50 ft.
SPECIFIC GRAVITY 0.4
0.5
0.6
0.7
0.8
0.9
1.0
1.1
1.2		 0.4 S.G. (A190, AA190 only)
0.5 S.G. (A190, AA190 only)
0.6 S.G.
0.7 S.G.
0.8 S.G.
0.9 S.G.
1.0 S.G.
1.1 S.G.
1.2 S.G.
FLANGE 00
0
6
7
8
9
10
11
12
13
14
15
6S
7S
8S
9S
10S
11S
12S
13S
14S
15S		 3″ NPT connection
3/4″ Screw connection
3″ 150# RF carbon steel
4″ 150# RF carbon steel
5″ 150# RF carbon steel
6″ 150# RF carbon steel
8″ 150# RF carbon steel
3″ 300# RF carbon steel
4″ 300# RF carbon steel
5″ 300# RF carbon steel
6″ 300# RF carbon steel
8″ 300# RF carbon steel
3″ 150# RF 316SS
4″ 150# RF 316SS
5″ 150# RF 316SS
6″ 150# RF 316SS
8″ 150# RF 316SS
3″ 300# RF 316SS
4″ 300# RF 316SS
5″ 300# RF 316SS
6″ 300# RF 316SS
8″ 300# RF 316SS
OPTIONS INC
STW
01
02
12
23720		 Inconel Spring
SS Tag Wired
Breather Only (E-Housing only)
Drain Only (E-Housing only)
Breather and Drain (E-Housing only)
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		 SPST Open on Level Fall 10 5 3† 10 5 4821
SPST Open on Level Rise 10 5 3† 10 5 4820
SPDT One switch 4 2 1† 4 5 4810
SPDT Two switches E.I.* 10 5 3† 10 5 4815
DPST Two switches E.I.* Open on Level Fall 10 5 3† 10 5 4813
DPST Two switches E.I.* Open on Level Rise 10 5 3† 10 5 4814
DPDT Two SPDT switches 4 2 1† 4 2 4806
CHART B
Snap Action
Contacts		 SPDT One switch 12 5 3† 0.5† 0.25† 7810
DPDT Two SPDT switches 12 5 3† 0.5† 0.25† 7806
SPDT One hermetically sealed switch 5 5 5† 7810HM
DPDT Two hermetically sealed SPDT switches 5 5 5† 7806HM
DPDT Two SPDT switches 10 3 10‡ 3‡ 9806
SPDT One switch 10 3 10‡ 3‡ 9810
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User Guide and Instruction manual for DWYER B-190

You can request the necessary certificates, documentation, instructions and user guide for DWYER B-190 using the special form.

You can buy DWYER B-190 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 B-190 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