Dwyer Instruments SERIES PTGD Data Sheet
®
SERIES PTGD | DIFFERENTIAL PRESSURE PISTON-TYPE GAGE
FEATURES/BENEFITS
• Rugged, weather and corrosive proof design supports use in harsh
environments
• Over-protection range depending on model, up to 6000 psig (400 bar)
allows high-pressure applications
• Flexibilityofconnectionselectiontsthemostsophisticateddesigns
APPLICATIONS
• Natural, manufactured or LP gas applications
DESCRIPTION
The SERIES PTGD Differential Pressure Piston-Type Gage can be used to measure the
pressure drop across lters, strainers, pump performance testing, and heat exchanger
pressure drop monitoring. Its simple, rugged design possesses weather and corrosive
resistant gage front with a shatter resistant lens. The Series PTGD contains a piston-sensing
element which provides different differential pressure ranges with full-scale accuracies of
±2%. Constructed with aluminum or 316 SS and available with two 1/4˝ female NPT end
connections, the Series PTGD provides over-range protection rated to 3000 psig (200 bar)
or 6000 psig (400 bar) depending on model. Standard models come with in-line connections.
Back or bottom connections are also available.
SPECIFICATIONS
Service Compatible gases and liquids.
Wetted Materials Gage body: aluminum or 316 SS; Piston: aluminum or 316 SS; Spring 302 SS; Seals: Buna-N (standard); PTFE, Ceramin
magnet; Dial case: Nylon 6 30% glass lled gage case.
Window Acrylic.
Accuracy ±2% FS ascending.
Temperature Limit 176°F (80°C).
Pressure Limit 3000 psi (206 bar) for aluminum body; 6000 psi (400 bar) for SS body.
Size 2.5˝ (63 mm) or 4.5˝ (115 mm).
Mounting Orientation Mount in any position.
Process Connections 1/4˝ female NPT end connections standard; 1/4˝ female NPT back or bottom connections available. All styles available with
1/4˝ BSP.
Weight Aluminum: 2.5” 0.88 lb (399 g); 4.5˝ 1.35 lb (612 g); Stainless steel: 2.5˝ 1.75 lb (794 g); 4.5˝ 2.3 lb (1.04 kg).
DWYER INSTRUMENTS, INC.
®
DIMENSIONS
1-4
1-7/8
[47.60]
2-1/8
[54.00]
[6.50]
3-3/32
[83.00]
3
[76.20]
7/8 [22.00]
6-7/32
[157.93]
5-1/4
[133.30]
1-3/32 [28.10]
HIGH LOW
1-13/16
[46.00]
3[76.00]
3-31/32
[101.00]
HIGH LOW
1-13/16
[46.00]
3 [76.00]
3-31/32
[101.00]
1-31/32
[50.00]
2X 1/4˝ UNC
1/2 [12.60]
1 [25.20]
1-31/32
[50.00]
7-9/32
[32.20]
1/2 [12.60]
1 [25.20]
1-9/32
[32.20]
HOW TO ORDER
Use the bold characters from the chart below to construct a product code.
PTGD -A -A -02 -A -PY
SERIES
PTGD - Differential pressure piston-type gage
WETTED PARTS
-A - Aluminum
-S - 316 stainless steel
SIZE
-A - 2.5˝
-C - 4.5˝
RANGE
-01 - 5 psid/0.25 bar
-99 - 5 psid/0-600 gpm SQRT scale
-37 - 8 psid/0.55 bar
-02 - 10 psid/0.75 bar
-03 - 15 psid/1.0 bar
-04 - 20 psid/1.6 bar
-05 - 25 psid/1.6 bar
-06 - 30 psid/2.0 bar
-07 - 40 psid/3.0 bar
-08 - 50 psid/3.5 bar
-09 - 60 psid/4.0 bar
-10 - 80 psid/5.5 bar
-11 - 100 psid/7.0 bar
-12 - 150 psid/10.0 bar
-13 - 5 psid/0.25 kg/cm
-14 - 10 psid/0.75 kg/cm
-15 - 15 psid/1.0 kg/cm
-16 - 20 psid/1.6 kg/cm
-17 - 25 psid/1.6 kg/cm
-18 - 30 psid/2.0 kg/cm
-19 - 40 psid/3.0 kg/cm
-20 - 50 psid/3.5 kg/cm
-21 - 60 psid/4.0 kg/cm
-22 - 80 psid/5.5 kg/cm
-23 - 100 psid/7.0 kg/cm
2
2
2
2
2
2
2
2
2
2
2
4X ø3/16 [ø5.16]
EQUALLY SPACED ON A
ø3-1/2 [ø88.90] BOLT CIRCLE
1/4˝ NPT
BOTH ENDS
1/4˝ NPT
BOTH ENDS
≠≠ø3-1/32 [ø76.99]
PANEL CUTOUT
4X ø3/16 [ø5.16]
EQUALLY SPACED
ON A ø5-5/8 [ø142.85]
BOLT CIRCLE
ø5-9/32 [ø133.97]
PANEL CUTOUT
-24 - 150 psid/10.0 kg/cm
-25 - 5 psid/25 kPa
-26 - 10 psid/75 kPa
-27 - 15 psid/100 kPa
-28 - 20 psid/160 kPa
-29 - 25 psid/160 kPa
-30 - 30 psid/200 kPa
-31 - 40 psid/300 kPa
-32 - 50 psid/350 kPa
-33 - 60 psid/400 kPa
-34 - 80 psid/550 kPa
-33 - 100 psid/700 kPa
-34 - 150 psid/1000 kPa
OPTIONS
-N - EDPM seals
-PY - Glycerin ll
-PF - Pointer follower
-RP - Reverse port
-SP1 - 1 SPDT DIN plug
-SP2 - 2 SPDT DIN plugs
-V - FKM seals
VARIANT 2
-A - 1/4˝ female NPT inline
-B - 1/4˝ female NPT rear
-C - 1/4˝ female NPT bottom
-D - 1/4˝ female BSP inline
2
-E - 1/4˝ female BSP rear
-F - 1/4˝ female BSP bottom
ACCESSORIES
Model Description
A-627
NISTCAL-PG1
Important Notice: Dwyer Instruments, Inc. reserves the right to make changes to or discontinue any product or service identied in this publication without notice. Dwyer advises its customers to obtain the
latest version of the relevant information to verify, before placing any orders, that the information being relied upon is current.
Universal pipe mounting kit, for 2˝ diameter pipe only
NIST traceable pressure calibration certicate for pressure gages over 1% accuracy
DWYER INSTRUMENTS, INC.
DS-PTGD | 11/17
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