Dwyer Instruments SERIES 7000, SERIES 7000B Catalog Page
[3] Ø 7/32 [5.56]
MOUNTING HOLES
2 PLACES
CONNECTION BLOCK
[3] Ø7/32 [5.57]
[78.98]
[149.23]
120°
®
SERIES 7000 & 7000B
SPIRAHELIC® DIRECT DRIVE PRESSURE GAGES
Panel Mount, 4-1/2” & 8-1/2” Dials, ASME Grades 2A & 3A
PRESSURE
GRADE 2A ACCURACY
The Series 7000 & 7000B Spirahelic
a unique triple helix Bourdon tube for precision measurement of compatible
gases and liquids. The direct drive design reduces friction and mass, resulting
in exceptionally good responsiveness, repeatability and accuracy. Because
there are no gears, springs, linkages or other complicated mechanisms, wear
is practically eliminated. The Series 7000 has solid brass or 316 stainless steel
connection block features convenient dual 1/4˝ female NPT ports-one each on
back and bottom. Block also includes integral lter plug to keep dirt out. Safety
is assured with solid front case design and rear blowout hole. Gages t ASME
standard panel cutouts, 4.94˝ (125 mm) -7100; 6.5˝ (165.1 mm) -7300. The
Series 7000B Spirahelic
housings and standard with a dual-size 1/2˝ male NPT and 1/4˝ female NPT
process connection.
FEATURES/BENEFITS
• Direct drive design with single moving part maximizes lifespan and accuracy
without the need to recalibrate
• Elastic Bourdon tube resists overpressure and returns to original setting
• Blowout hole prevents early failure from high overpressure conditions
• Single element sensing means total lower cost of ownership because of long
service life and lower cost to maintain
Dial
APPLICATIONS
• Systems with high cycle rates
• Process with problematic pressure surges and spikes
• Environmental with continuous vibration shock
Single Pressure Gages,
MODEL CHART - 4-1/2˝ DIAL,
GRADE 2A ACCURACY (1/2% OF FS)
Model Range (psig)
7112-G030
7112-G060
7112-G100
7112-G200
MODEL CHART GRADE A ACCURACY (2%-1%-2%)
Model Range (psig)
7100B-G100
7100B-G200
7100B-G300
MODEL CHART GRADE 2A ACCURACY (1/2% OF FS)
Model Range (psig)
7112B-G030
7112B-G060
7112B-G100
7112B-G160
7112B-G200
7112B-GC010
ACCESSORIES
Model Description
A-341 Brass adapter, 1/4˝ male NPT to G 1/2A
88
DWYER INSTRUMENTS, INC. | dwyer-inst.com
7112 (4-1/2˝ Dial)
®
Direct Drive Pressure Gages comes with turret mount
30
60
100
200
100
200
300
30
60
100
160
200
1000
(per ISO 228/1) parallel thread 2-1/2˝ length
7000B
®
Direct Drive Pressure Gages employ
MOUNTING HOLES
EQUALLY SPACED ON A
3-3/8 [85.73] BOLT CIRCLE
Ø5-7/8
3-7/64
SPECIFICATIONS
Service: Compatible gases & liquids.
Wetted Materials: Grade A accuracy: Inconel
brass connection block; Grade 2A accuracy: Inconel
SS connection block.
Housing: Black polycarbonate case and clear acrylic cover.
Accuracy: Grade A (2%-1%-2%); Grade 2A (0.5% FS).
Pressure Limit: 150% of full-scale. Gage will maintain its specications for overpressures
up to 150% max. range. Normal operation should be between 25% and 75% of full-scale.
Temperature Limits: -65 to 180°F (-53.9 to 82.2°C).
Sizes: 4-1/2˝ dial face (114.3 mm), 8-1/2˝ dial face (215.9 mm), design conforms to ASME
B40.1.
Process Connections: 7000: Two 1/4˝ female NPT eld-selectable back or bottom
connection; 7000B: Dual size 1/2˝ male NPT X 1/4˝ female NPT, bottom connections.
Weight: 7000: 4-1/2˝ dial face: 16.3 oz (462.1 g); 8-1/2˝ dial face: 27.3 oz (773.9 g);
7000B: 18.2 oz (516 g).
Standard Accessory: One 1/4˝ male NPT stainless steel plug.
Note: Additional ranges and accuracy requirements are available. Please consult the
factory for details.
PRECISION DESIGN ENSURES MAINTENANCE-FREE PERFORMANCE
Solid front case combined
with rear blowout plug
provides highest level of
operator safety.
Direc t drive movement no cams, gears or linkages.
Provides longer operating
life than standard “C”
Bourdon gages.
Precision balanced
pointer with reduc ed
friction produces higher
responsiveness than
standard gage.
High impact plastic case
and lens allows gages
to last through the most
demanding applications.
USA: California Proposition 65
WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
EQUALLY SPACED
ON A 5-3/8 [136.53]
BOLT CIRCLE
DUAL PRESSURE
CONNECTION
1/2 MALE NPT
1/4 FEMALE NPT
23/64
[9.13]
120°
Ø5-7/8
[149.23]
Inconel® is a registered trademark of Huntington Alloys Corporation
1-9/32
[32.54]
®
X-750 alloy Bourdon tube, nickel plated
®
X-750 alloy Bourdon tube, type 316L
2-5/32
[54.76]
Ø4-4/64
1-13/32
[35.71]
Design of small diameter
tubing wound in spiral/
helical coil acts like a liquid
lled gage without the ll.
Center post bearing
carrier supports pointer
shaft and coil.
Rear blowout hole covered
with label. This safety
enhancement directs an
overpressure surge or spike
away from operators.
Case and shock
protection ribs help
prevent damage to Bourdon
tube in the event of severe
shock.
Filter plug protects
Bourdon tube from
particulate damage and
reduces pressure surges.
[117.87]
2-1/32
[51.59]
1/4 FEMALE NPT PRESSURE
CONNECTION TYP
1 [25.40] SQUARE
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