Dwyer Instruments SERIES DR Catalog Page
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SERIES DR
E
DIRECT READING GLASS FLOWMETERS
FLOW
65 mm and 150 mm, Interchangeable Flowtubes, Direct Reading Scales
1/8 FNPT
5-1/2
4-1/2
[114.3]
1/2
[12.7]
5/8
[15.88]
E
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D
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150 mm65 mm
The Series DR Direct Reading Glass Flowmeters are ideal for the direct ow
measurement of air, water, and other commonly used gases. These owmeters are
designed with direct read scales with no need for correlation charts. They feature
borosilicate glass tubes in 150 mm or 65 mm scales with aluminum and SS metering
valve options.
FEATURES/BENEFITS
• Permanently fused ceramic scale with vertical locator line, reective lens background
and 1.5 X magnication lens reduces parallax and eye fatigue saving time
• Long operating life with thick polycarbonate front shield that protects tube from
breakage and serves as a magnifying lens to enhance reading resolution
• Optional needle valve for ow rate control eliminating the need for a separate valve
reducing cost
• Increased protection with included safety blow-out back panel for added safety
APPLICATIONS
• Gas or liquid metering
• Paper manufacturing
• Chemical processing
• Semiconductor systems
• Water and air pollution analysis systems
• Laboratory systems
Panel mounting: Drill two 5/8˝ dia. holes at 4.5˝ apart for 65mm models
1/8
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ø23/32
[ø18.29]
1-1/4
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OPEN
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150 MM
SCALE
LENGTH
5/8
[15.88]
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1/8
[3.30]
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[82.55]
Ø23/32
[Ø18.29]
1-1/4
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OPEN
1
65 mm 150 mm
and 8.812˝ apart for 150 mm models (center-to center).
SPECIFICATIONS
Service: Compatible gases or liquids.
Wetting Materials: Flowtube: Borosilicate glass; Float: 316 SS (black glass as
indicated); Float stops: PTFE; End ttings: Anodized aluminum or 316 SS; O-rings:
Buna-N on aluminum models and uoroelastomer on SS models.
Temperature Limit: 250°F (121°C).
Pressure Limit: 250 psig (17 bar).
Accuracy: ±5% FS @ 70°F (21.1°C) and 14.7 psia (1 atm absolute).
Repeatability: ±0.25% of scale reading.
Scales: Direct reading 65 mm or 150 mm scales for air or water.
Turn-Down Ratio: 10:1.
Connection: 1/8˝ female NPT.
Mounting: Vertical.
Valve: 6-turn needle (standard on models with valve).
1-1/4
[31.75]
65 MM
SCALE
5/8
[15.88]
9-13/16
[249.24]
FNPT
1/2
8-13/16
[223.84]
1/8
5/8
[15.88]
1
7-9/16
Flowmeters,
MODEL CHART - 65 MM SCALE
Variable Area & In-Line
Model Without Valve Model With Valve Max. Flow Rate
Aluminum SS Aluminum SS
DR10010*
DR10022
DR10030*
DR10042
Note: Add sufx “M” for metric scale. *Denotes glass oat.
†Metric models use ccm as unit of measure for water & LPM for air.
MODEL CHART - 65 MM SCALE
Model Without Valve Model With Valve Max. Flow Rate
Aluminum SS Aluminum SS
DR10062
DR10070*
DR10082
DR10090*
DR100102
Note: Add sufx “M” for metric scale. *Denotes glass oat.
MODEL CHART - 65 MM SCALE
Model Without Valve Model With Valve Max. Flow Rate
Aluminum SS Aluminum SS
DR100120*
DR100132
DR100140*
DR100152
DR100172
DR100180*
DR100192
DR100200*
DR100212
Note: Add sufx “M” for metric scale. *Denotes glass oat.
DWYER INSTRUMENTS, INC. 256
DR12010*
DR12022
DR12030*
DR12042
DR12062
DR12070*
DR12082
DR12090*
DR120102
DR120120*
DR120132
DR120140*
DR120152
DR120172
DR120180*
DR120192
DR120200*
DR120212
DR10410*
DR10422
DR10430*
DR10442
DR10462
DR10470*
DR10482
DR10490*
DR104102
DR104120*
DR104132
DR104140*
DR104152
DR104172
DR104180*
DR104192
DR104200*
DR104212
DR12410*
DR12422
DR12430*
DR12442
DR12462
DR12470*
DR12482
DR12490*
DR124102
DR124120*
DR124132
DR124140*
DR124152
DR124172
DR124180*
DR124192
DR124200*
DR124212
Air SCFH
(SCCM)
0.24 (130†)
0.65 (300†)
1.1 (500†)
2.2 (1000†)
Air SCFH
(L/min)
5.6 (2.1)
11 (5)
20 (9.5)
55 (24)
100 (50)
Water GPH
(SCCM)
0.02 (1.5)
0.1 (6.5)
0.13 (8)
0.36 (24)
0.9 (55)
2.2 (140)
4.4 (280)
10 (600)
24 (1500)
MODEL CHART - 150 MM SCALE
Model Without Valve Model With Valve Max. Flow Rate
Aluminum SS Aluminum SS
DR20032
DR20082
DR200132
Note: Add sufx “M” for metric scale.
MODEL CHART - 150 MM SCALE
Model Without Valve Model With Valve Max. Flow Rate
Aluminum SS Aluminum SS
DR200182
DR200232
DR200282
DR200332
DR200382
Note: Add sufx “M” for metric scale.
MODEL CHART - 150 MM SCALE
Model Without Valve Model With Valve Max. Flow Rate
Aluminum SS Aluminum SS
DR200432
DR200482
DR200532
DR200582
DR200632
DR200682**
DR200732
DR200782
Note: Add sufx “M” for metric scale. **Not available in metric scale.
OPTIONS
Use order code: Description
NISTCAL-FL1 NIST traceable calibration certicate
DR22032
DR22082
DR220132
DR220182
DR220232
DR220282
DR220332
DR220382
DR220432
DR220482
DR220532
DR220582
DR220632
DR220682
DR220732
DR220782
DR20432
DR20482
DR204132
DR204182
DR204232
DR204282
DR204332
DR204382
DR204432
DR204482
DR204532
DR204582
DR204632
DR204682**
DR204732
DR204782
DR22432
DR22482
DR224132
DR224182
DR224232
DR224282
DR224332
DR224382
DR224432
DR224482
DR224532
DR224582
DR224632
DR224682
DR224732
DR224782
Air SCFH
(SCCM)
0.33 (160)
0.54 (270)
2 (840)
Air SCFH
(L/min)
3.8 (1.8)
10 (4.8)
16 (7.5)
35 (16)
90 (44)
Water GPH
(SCCM)
0.05 (3.2)
0.075 (4.6)
0.34 (21)
0.75 (46)
2.2 (140)
3.6 (230)
7.5 (480)
21 (1300)
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