Dwyer Instruments SERIES DS Catalog Page

CLEARANCE

1-15/16

GAP 14˝ PIPE AND UP

2-1/16

SERIES DS

IN-LINE FLOW SENSORS

FLOW

Use with the Dwyer® Differential Pressure Gages or Transmitters

Valves — Standard, brass with TFE seat and Buna-N O-ring.

1/4 NPT

1/16 [1.59]

[49.21]

1-5/8 [41.28]

1-3/4 [44.45]

1-11/16 [42.86] APPROX

1-7/16 [36.53]

5/16 [7.94]

GAP UP TO 12˝ PIPE

Large 3/4 inch diameter for extra strength in lengths to 24 inches

Nameplate — Stainless steel permanently attached with split ring. Includes complete size and model information.

Head — Machined stainless steel.

Packing gland — Brass

compression tting.

Sensor tube — 304 SS.

Sensing ports — Multiple upstream and downstream ports sized and positioned to provide effective accurate pressure averaging, even at lower velocities.

Series DS-300 Series DS-400

1/16 [1.60]

1/8 [3.175]

[52.40]

1-5/8 [41.28] TYP.

2-1/8 [53.98]

3-5/8 [92.08] APPROX.

3/4 [19.05]

DIA.

The Series DS In-Line Flow Sensors are two Series of averaging Pitot tubes for

compatible gases and liquids that provide accurate and convenient ow rate sensing,

for schedule 40 pipe, when purchased with suitable differential pressure gage with appropriate range. The Series DS-300 Averaging Flow Sensors are designed to be

In-Line

inserted in the pipeline through a compression tting and available for pipe sizes from

Flow Sensors,

1 to 10˝ (2.5 to 25.4 cm). Accessories include adapters with 1/4˝ SAE 45° ared ends

compatible with hoses supplied with the Model A-471 Portable Capsuhelic The Series DS-400 Averaging Flow Sensors are designed for insertion lengths up

to 24˝ (61 cm) and include a pair of 1/8˝ NPT x 1/4˝ SAE 45° ared adapters which

are compatible with hoses used in the Model A-471 Portable Capsuhelic

The supplied solid brass mounting adapter has a 3/4˝ dia. compression tting to lock in required insertion length and a 3/4˝ male NPT thread for mounting in a threaded branch connection (not included).

FEATURES/BENEFITS

• Multiple sensing point measurement and built-in averaging capability eliminates

the need for “traversing” the owing stream with single point velocity pressure

measurement saving time

• Extremely reliable, proven technology, Pitot tubes, have been used in ow

measurement for years

• All models include convenient and quick-acting quarter-turn ball valves to isolate the sensor for zeroing with 1/8˝ female NPT valve assembly process connections.

• Furnished with instrument shut-off valves on both pressure connections with 1/8˝ female NPT connections rated at 200 psig (13.7 bar) and 200°F (93.3°C)

• Where valves are not required, they can be omitted at reduced cost

• The Series DS-400 Averaging Flow Sensors are quality constructed from extra strong 3/4˝ dia. stainless steel to resist increased forces encountered at higher ow

rates with both air and water

• Economical ow indication when used with appropriate differential pressure gage

• Rugged construction yields, non-clogging, stable design

Gage Kit.

SPECIFICATIONS Service: Compatible gases or liquids.

Wetted Materials: Sensor tube: 304 SS; Compression tting: brass. Temperature Limit: 200°F (93.3°C). Pressure Limit: 200 psig (13.78 bar) at 200°F (93.3°C). Pipe Sizes: DS-300: 1 to 10˝ (2.5 to 25.4 cm); DS-400: 6 to 24˝ (15.2 to 61 cm). Process Connections: DS-300: 1/4˝ male NPT compression tting included; DS-

400: 3/4˝ male NPT compression tting included. Piping Connections: DS-300: 1/8˝ female NPT; optional 1/8˝ female NPT x 1/4˝ SAE 45 ared adapter sold separately; DS-400: 1/8˝ female NPT with 1/8˝ female NPT x 1/4˝ SAE 45 ared adapters include.

Weights: Consult factory.

APPLICATIONS

• Remediation

• Natural, are, ue, stack gas

• Boiler feedwater

• Cooling water

• Superheated, saturated, or geothermal steam

• Combustion or compressed air

• Oil ow monitoring

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SERIES DS

IN-LINE FLOW SENSORS

Use with the Dwyer® Differential Pressure Gages or Transmitters

FLOW

HOW TO ORDER

Merely determine the pipe size into which the ow sensor will be mounted and designate the size as a sufx to Model DS-300. For example, a ow sensor to be mounted in a 2˝ pipe would be a Model No. DS-300-2˝. For non-critical water and air ow monitoring applications, the chart below can be utilized for ordering a stock Capsuhelic 300 ow sensor. Simply locate the maximum ow rate for the media being measured under the appropriate pipe size and read the Capsuhelic water column to the left. The DS-300 sensor is supplied with installation and operating instructions, Bulletin F-50. It also includes complete ow conversion information for the three media conditions shown in the chart below. This information enables the user to create a complete differential pressure to ow rate conversion table for the sensor and differential pressure gage employed. Both the Dwyer sensor feature excellent repeatability so, once the desired ow rate is determined, deviation from that ow in quantitative measure can be easily determined. You may wish to order the adjustable signal ag option for the Capsuhelic easily identied reference point for the proper ow. Capsuhelic ow units are available on special order for more critical applications. Customer supplied data for the full-scale ow (quantity and units) is required along with the differential pressure reading at that full ow gure. Prior to ordering a special Capsuhelic Bulletin F-50 to obtain complete data on converting ow rates of various media to the sensor differential pressure output. With this bulletin and after making a few simple calculations, the exact range gage required can easily be determined.

RANGE CHART Gage Range (in w.c.)

2 2 2 5 5 5 10 10 10 25 25 25 50 50 50 100 100 100

gages with special ranges and/or direct reading scales in appropriate

differential pressure gage for ow read-out, we recommend you request

Media @ 70°F

Water (GPM) Air @ 14.7 PSIA (SCFM) Air @ 100 PSIG (SCFM) Water (GPM) Air @ 14.7 PSIA (SCFM) Air @ 100 PSIG (SCFM) Water (GPM) Air @ 14.7 PSIA (SCFM) Air @ 100 PSIG (SCFM) Water (GPM) Air @ 14.7 PSIA (SCFM) Air @ 100 PSIG (SCFM) Water (GPM) Air @ 14.7 PSIA (SCFM) Air @ 100 PSIG (SCFM) Water (GPM) Air @ 14.7 PSIA (SCFM) Air @ 100 PSIG (SCFM)

differential pressure gage for use with the DS-

gage range in inches of

Capsuhelic® gage and ow

gage to provide an

Full Range Flows by Pipe Size (Approximate)

1˝ 1-1/4˝ 1-1/2˝ 2˝ 2-1/2˝ 3˝ 4˝ 6˝ 8˝ 10˝

4.8

8.3

11.5

20.5

19.0

50.0

7.7

30.0

83.0

11.0

41.0

120.0

18.0

63.0

185.0

25.0

90.0

260.0

36.5

135.0

370.0

33.0

90.5

14.0

51.0

142.0

19.0

72.0

205.0

32.0

112.0

325.0

44.0

161.0

460.0

62.0

230.0

660.0

42.0

120.0

18.0

66.0

190.0

25.5

93.0

275.0

40.5

155.0

430.0

57.5

205.0

620.0

82.0

300.0

870.0

65.0

210.0

34.0

118.0

340.0

45.5

163.0

470.0

72.0

255.0

760.0

100.0

360.0

1050.0

142.0

505.0

1500.0

113 325 47 178 610 67 250 740 108 390 1200 152 560 1700 220 800 2300

183 510 78 289 820 110 410 1100 173 640 1800 247 900 2600 350 1290 3600

MODEL CHART Model Description Model Description

DS-300-1˝ DS-300-1-1/4˝ DS-300-1-1/2˝ DS-300-2˝ DS-300-2-1/2˝ DS-300-3˝ DS-300-4˝ DS-300-6˝ DS-300-8˝ DS-300-10˝

OPTIONS To order add sufx: Description

-LV DS-300 or DS-400 less valves

205

330

760

920

2050

138

320

510

1200

1600

3300

195

450

725

1690

2000

4600

310

720

1130

2630

3300

7200

435

1000

1600

3700

4600

10000

620

1500

2290

5000

6500

15000

1˝ pipe size 1-1/4˝ pipe size 1-1/2˝ pipe size 2˝ pipe size 2-1/2˝ pipe size 3˝ pipe size 4˝ pipe size 6˝ pipe size 8˝ pipe size 10˝ pipe size

350

560

1340

2130

3600

6000

560

890

2150

3400

5700

10000

800

1260

3040

4860

8100

15000

1250

2000

4860

7700

13000

22000 1800 6400 18500

DS-400-6˝ DS-400-8˝ DS-400-10˝ DS-400-12˝ DS-400-14˝ DS-400-16˝ DS-400-18˝ DS-400-20˝ DS-400-24˝

6˝ pipe size 8˝ pipe size 10˝ pipe size 12˝ pipe size 14˝ pipe size 16˝ pipe size 18˝ pipe size 20˝ pipe size 24˝ pipe size

-LV option

Flow Sensors,

In-Line

ACCESSORIES Model Description A-160 A-161 A-471

631B

Threaded branch connection, 3/8˝ NPT, forged steel, 3000 psi Brass bushing, 1/4˝ x 3/8˝ Portable kit. For portable operation, the A-471 Capsuhelic gage kit is available complete with tough polypropylene carrying case, mounting bracket, 3-way manifold valve, two 10´ high pressure hoses, and all necessary ttings.u Capsuhelic transmitter for use with DS-300/400 ow sensors. Use Series 631B Capsuhelic

portable

wet/wet differential pressure transmitter. Low pressure

wet/wet differential pressure transmitter.

Capsuhelic® gage shown

installed In A-471 portable kit

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Series 631B

uSee page 31 (Series 4000)

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