Pilgrim Pressure Gauges Process User Manual

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Page 1

Duragauge®Pressure Gauge

BULLETIN DU-1

a Halliburton company

PLUS!

Performance

NOW WITH

Page 2

Features & Benefits

Ashcroft®Duragauge®Pressure Gauge

The Ashcroft®Duragauge®pressure gauge is the finest production gauge on the market for industrial use where precise indications are required. The product line offers a wide v ariety of case styles, Bourdon tubes and pressure ranges to meet your application needs .

With the component combinations available in the Dur agauge gauge line , over ten million variations are possib le to serve the needs of all types of industries, including process, power , n uclear, aerospace and cryogenics.

The Duragauge gauge offers the same outstanding quality and craftsmanship which have characterized all Ashcroft products since Edward Ashcroft introduced the Bourdon tube pressure gauge to American industry in

1852. It is built for long lif e and sustained accuracy under the most adverse operating conditions.

Uncompromising standards have been established for all incoming materials used in Ashcroft products, with dimensional details, material selection and design carefully scrutinized. Tubing used in manufacturing Bourdon tubes must meet stringent standards, more restrictive than ASTM material specifications. Throughout production, quality assurance procedures are adhered to, including assembly inspection, and critical laboratory examination.

Product integrity is assured through continual monitoring of pressure element quality. Every Bourdon tube system is subjected to a leak test at a pressure above the top of its range . Computer programs yield Bourdon tube designs with minimum stresses, assuring the long life and sustained accuracy demanded of Ashcroft products.

In the engineering breakdown lab, a variety of tests are run continually on Duragauge Bourdon tube systems, such as pulsation, burst, vibration, wear, and friction tests on movements.

Care and attention are given to ev ery product from its inception to final assembly. The end result- thoroughly engineered instruments that assure the user a product that is precise, dependable and durable.

Ashcroft has pioneered the field of gauge manufacture in research and product integrity since the Bourdon tube was introduced to American industry . The list of Ashcroft “firsts” in pressure gauge development would fill several

Solid front case design, field convertible to hermetically sealed or liquid filled style

Pressure ranges from vacuum-100,000 psi

Micrometer adjusta pointer

Select from various socket and Bourdon tube materials

CONTENTS

Page 2 & 3 Features and benefits 4 Warranty and movement 5 Other Duragauges 6 & 7 Specification matrix 8 Product selection information 9 Media application table 10 & 11 Range tables 12 Options 13 How to order 14 & 15 Dimensions

Page 3

1379 Case style

Available in 41⁄

2˝ 6,˝ and 8

⁄

2˝ sizes. The

Ashcroft model 1379 solid front gauge has a black epoxy coated alumin um case with a threaded reinforce polypropylene ring. This weather-proof gauge can be converted to liquid filled or hermetically sealed using a conversion kit.

1377 Case style

Designed particularly for flush mounting, the Ashcroft model 1377 is available in 4

⁄

2,˝ 6,˝ and 8

⁄

2˝ dial

sizes. The hinged steel black wrinkle enamel coated ring makes this gauge well suited for panel board applications.

1279 Case style

The Ashcroft solid front phenolic case 1279 gauge can be converted to hermetically sealed or liquid filled using a conversion kit. Availab le in 4

⁄

2˝ dial size this

gauge has a threaded reinforced polypropylene front ring for easy zero adjustment with a micrometer adjustable pointer.

pages. They include the rotary geared stainless steel movement, the all 316 stainless steel pressure system, the phenolic turret case, numerous other improvements and most recently, the patent pending Duragauge

PLUS!

Several important variables must be considered when selecting the type of case for the application. A gauge is subject to environmental and atmospheric conditions, and the gauge internals must be protected from these elements. To protect the gauge from environmental and atmospheric conditions, the 1279, 1377 and 1379 Duragauges are

offered with a standard weatherproof type case. A 4

⁄

2˝ 1279 and 4

⁄

2˝ or 6˝

1379 Duragauge can be ordered dry , hermetically sealed, liquid filled or with

PLUS!

performance.

400 Series stainless steel movement wears better for longer life

Round-Cap-Tip construction lowers stresses for longer life

Exclusive Features!

Teflon-coated pinion for longer life

Patented Duratube™ with welded-tube construction controls stresses for longer life

2462 Case style

This high impact resistant polypropylene case gauge and bayonet lock black ring is available with a 6˝ dial. This Duragauge can be stem, surface, or flush mounted and stands up well in most environments.

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Edward Ashcroft introduced the Bourdon tube pressure gauge to American Industry 140 years ago. Since that time, we ha ve developed thousands of improvements and ov er a hundred patents furthering the development of Ashcroft pressure instruments. From the v ery beginning, we have maintained our reputation for quality , product performance, and technical innovation that is the envy of all others in the industry. We are confident of our manufacturing processes and the design of our pressure gauge systems. So confident, that we guarantee the Duragauge pressure system to be free of leaks for 10 years when installed and operated with the recommendations outlined in ASME B40.1 Of course our standard 1 year warranty on materials, workmanship, and all other parts, is still in effect.

Millions of Ashcroft Duragauge pressure gauges continue to deliver prov en perf ormance in critical process applications throughout the world. You can depend on our commitment to quality – just what you’ve come to e xpect from the leader in pressure technology – the people who design, produce, and sell Ashcroft products. For a copy of our w arranty call or write: Dresser Instrument Division 250 East Main Street Stratford, CT 06614-5145 203-378-8281 Ask for Customer Service.

Warranty & Movement

Ashcroft®Duragauge®Pressure Gauge

The Ashcroft®Stainless Steel Rotary Geared

Teflon

S Movement is another “first” in gauge manufacture. It is truly innov ativ e with its thinner plates and segment, elimination of bushings, and low friction Teflon S coating on wearing parts. The shock resistance and stability of the Duragauge movement has been enhanced b y staking the movement top and bottom plates.

A Teflon S coating is applied to the pinion gear, pinion shaft, link screws and segment shaft. These critical components translate the motion of the Bourdon tube tip into the rotating pointer motion. Minimal friction is essential for reduced wear. The coating also serves to protect wear surfaces from outside ambient conditions.

A specially formulated lubricant is applied to all wear points. Wear is further reduced because the moving parts are light weight. The curved tail

segment provides easy calibration by mini-

mizing the effect of the span adjust-

ment on zero.

LINK SCREW

CAPTIVE NUT

SEGMENT SHAFT

TOP PLATE

PINION

SEGMENT

HAIR SPRING

PILLAR

BOTTOMPLATE

LINK

BUSHING

Stainless steel rotary geared Teflon®coated movement

Teflon®– DuPont Trademark

Page 5

PLUS!

™

Performance Dura gauge

An exclusive, ne w, optional feature provides virtually liquid-filled performance in a dry gauge.

The Ashcroft

PLUS!

™

feature is a patent-pending design incorporated into the industry-standard Ashcroft pressure gauge.

PLUS!

is available in an y Dura-

gauge case style material or range.

Historically , pulsation and vibr ation have reduced gauge lif e and made gauges difficult to read.

Customers have had no alternative to liquid-filled gauges to solve vibration and pulsation problems, until now!

Advantages V er sus Liquid-Filled Gauges

• Saves mone y

- Lower purchase price versus liquidfilled gauges

- Eliminates costly specialty fills

- Allows easy standardization to reduce mis-applications

• Eliminates possibility of leaks

• Lighter weight . . . easier to handle

• Eliminates liquid-fill lines . . . easier to read

• Easy recalibration

• Wider ambient temperature range than glycerin

• Eliminates disposal and environmental issues

Advantages V er sus Dry Gauges

• Steady pointer . . . same as liquidfilled gauges

• 100% longer life gauges . . . reduces gauge usage 50%!

Other Duragauges

Ashcroft®Duragauge®Pressure Gauge

High Pressure Duragauge

The Ashcroft high pressure Duragauge has a helical wound Inconel Bourdon tube which is capable of withstanding vibration without a zero shift or change in calibration. Because of the length of the helical tube, stresses are minimized and the tip trav el increased; this permits the use of a low ratio movement, which decreases wear from friction and increases gauge life. F or use on high pressure test applications, metal and concrete water cutting equipment, and other high pressure applications.

Features of the gauge include ASME B40.1, grade 2A,

⁄

2 of 1% full scale, 6˝

dial, lower or back connection, solid front aluminum case for wall or flush mounting. Inconel 718 Bourdon tube and 316 stainless steel socket is standard. A hermetically sealed, field liquidfillable case is standard. The Ashcroft high pressure Duragauge is availab le in ranges of 50,000 psi, 80,000 psi, and 100,000 psi with a standard

⁄

4˝ high

pressure tubing connection.

Receiver Duragauge

Used in conjunction with pneumatic transmitters, Ashcroft receiver gauges indicate pressure, temperature, flow, or any information that can be transmitted by proportional variations in air pressure.

For information concerning other receiver gauges offered, consult Customer Service, Stratford, Connecticut.

Liquid-Filled Duragauge

Liquid-filled Duragauges have tr aditionally been used in applications where there is excessive vibration and pulsa tion. Vibration can cause rapid movement resulting in loss of accuracy and possibly complete destruction of the gearing. Pulsation can generate millions of pressure cycles causing Bourdon tube fatigue and reduced service life. The field conversion kit contains an Ashcroft patented elastomeric back which provides compensation for ambient temperature variation while providing all the features of a blo w-out bac k.

The sealed case completely excludes dusty or corrosive environmental conditions. Since vibration and pulsation frequently occur together, all liquid filled Duragauges are fitted with a throttle plug screwed into the sock et. This can easily be removed or changed f or viscous or particulate containing media. Seven sizes are a vailable from .006 to .070 diameter.

PLUS!

Performance

Page 6

Specification Matrix

Ashcroft®Duragauge

Pressure Gauges

Specifications Code Type 1279 Type 1377

Accuracy (ASME B40.1, Grade 2A)

⁄

2% Full Scale

⁄

2% Full Scale

Case material Black phenolic Aluminum, black epoxy coated

Dial size (45), (60), (85) 41⁄

2,˝ (45) 4

⁄

2,˝ (45), 6,˝ (60), 8

⁄

2,˝ (85)

Ring type Threaded reinforced black polypropylene Steel hinged, black enamel finish

Bourdon tube/Socket material (Code)

C510 Phos. bronze/Brass brazed (A)

316L stainless steel/steel (R)

316L stainless steel/316L stainless steel (S)

K Monel/ Monel (P)

C510 Phos. bronze/Brass brazed (A)

316L stainless steel/steel (R)

316L stainless steel/316L stainless steel (S)

K Monel/ Monel (P)

Range limits (psi) Vacuum – 30,000 Vacuum – 30,000

Connection size (NPT) (02), (04), (09)

⁄

4 NPT (02 optional),

⁄

2 NPT (04 standard)

⁄

4 NPT (02 optional),

⁄

2 NPT (04 standard)

Connection location (L), (B) Lower (L), back, (B) Lower (L), back, (B)

Mounting Stem, flush, surface Stem, flush

Movement

Rotary, 400 st. st., Teflon®coated pinion gear and segment Rotary, 400 st. st., Teflon®coated pinion gear and segment

Pointer Micrometer adjustable Micrometer adjustable

Options

Glycerin fill (L)

Standard N/A

Silicone fill (XGV) Available N/A

Halocarbon fill (XGX) Available N/A

Hermetically sealed (H) Available N/A

Flush mounting ring (X56) Available Standard

Surface mounting bracket (XBF) N/A N/A

Flush mounting bracket (XBQ) N/A N/A

Duragauge®receiver gauge (XPR) Available Available

Shatterproof glass (XSG) Available Available

Acrylic window (XPD) Available Available

Set hand (red, single, fixed) (XSH) Available Available

Maximum pointer (red) (XEP) Available Available

Window Glass Glass

Case style (S) Solid front (S) Solid front (S)

PLUS!

Performance (XLL) Available Available

–50°F to +250°F –45°C to +250°C

–40°F to +250°F –40°C to +120°C

0°F to +250°F

–18°C to +120°C

Page 7

Type 1379 Type 2462 Type 1379 High pressure

⁄

2% Full Scale

⁄

2 % Full Scale

⁄

2% Full Scale

Aluminum, black epoxy coated Black polypropylene Aluminum, black epoxy coated

41⁄

2,˝ (45,) 6,˝ (60), 8

⁄

2,˝

(1)

(85) 6,˝ (60) 6,˝ (60)

Threaded reinforced black polypropylene

(2)

Bayonet lock black polypropylene Threaded reinforced black polypropylene

Inconel 718

(WW)

50,000, 80,000, 100,000

⁄

4 NPT (02 optional),

⁄

2 NPT (04 standard)

⁄

4 NPT (02 optional),

⁄

2 NPT (04 standard)

⁄

4˝ High pressure (09 standard)

Lower (L), back, (B) Lower (L), back, (B) Lower (L), back, (B)

Stem, flush, surface Stem, flush, surface Flush, surface

otary, 400 st. st., Teflon®coated pinion gear and segment Rotary, 400 st. st., Teflon®coated pinion gear and segment Rotary, 400 st. st., Teflon®coated pinion gear and segment

Micrometer adjustable Micrometer adjustable Micrometer adjustable

Standard N/A Available

Available N/A Available

Available N/A Standard

Available N/A Available

Available Available N/A

N/A Available N/A

Available Available N/A

Available Available Available

Available Available Standard

Available Available Available

Glass Glass Acrylic

Solid front (S) Solid front (S) Solid front (S)

316 stainless steel

(1) Non-liquid fillable (2) Steel hinged, black enamel finish for 81⁄

2˝ case

C510 Phos. bronze/Brass brazed (A)

316L stainless steel/steel (R)

316L stainless steel/316L stainless steel (S)

K Monel/ Monel (P)

C510 Phos. bronze/Brass brazed (A)

316L stainless steel/steel (R)

316L stainless steel/316L stainless steel (S)

K Monel/ Monel (P)

Vacuum – 30,000 Vacuum – 30,000

Page 8

Product Selection Information

Ashcroft®Duragauge®Pressure Gauge

Rear Cover

Gasket

1279 Case used for illustration purposes

Screws

Bourdon Tube System

Phenol Case

Dial

Micrometer Pointer

Threaded Ring

Window

Gasket

Consult ASME B40.1 for guidance in gauge selection

WARNING:

To prevent misapplication, pressure gauges should be selected considering media and ambient operating conditions. Improper application can be detrimental to the gauge, causing failure and possible personal injury or property damage. The information contained in this catalog is offered as a guide to assist in making the proper selection of a pressure gauge. Additional information is availab le from Dresser Instrument Division.

Pressure Ranges:

As recommended by ASME B40.1, select a gauge with a full scale pressure range of approximately twice the normal operating pressure. The maximum operating pressure should not exceed approximately 75% of the full scale range. F ailure to select a gauge r ange within these criteria may ultimately result in fatigue failure of the Bourdon tube .

Operating Conditions:

The operating conditions to which a gauge will be subjected must be considered. If the gauge will be subjected to severe vibrations or pressure pulsa tion, liquid-filling the gauge or the

PLUS!

option may be necessary to obtain normal product life. Other than discoloration of the dial and hardening of the gasketing that may occur as

ambient temperatures exceed 150°F, non liquid-filled Type 1279 (phenolic case), 1377 and 1379 (aluminum case) Duragauges with standard glass windows, can withstand continuous operating temperatures up to 250°F. Liquidfilled gauges can withstand 200°F but glycerin fill and acrylic window will tend to yellow. Accuracy will be affected by approximately 1.5% per 100°F. Gauges with welded joints will withstand 750°F (450°F with silver brazed joints) f or short times without rupture, although other parts of the gauge will be destroyed and calibration will be lost. Proper selection of the Bourdon system material is dependent on the process fluid to which the system will be subjected. If the correct material is not available, the use of a diaphragm seal ma y be necessary to protect the system from the process fluid. Liquid-filled gauges are recommended for the discharge side of positive displacement pumps.

Pressure Elements:

Available in a wide variety of materials, including: phosphor bronze, alloy steel, 316 stainless steel, K Monel and Inconel.

Cases:

Four solid front case types are off ered. Solid front cases have a solid wall between the Bourdon tube and the window . The 1279 and 1379 Duragauge cases are field convertible by means of a kit. These gauges can be converted

to hermetically sealed or liquid-filled. Buna-N seals at the front and rear of the case provide resistance to aggressive atmospheres.

Rings:

The ring, which retains the window, is threaded, bayonet (cam), or hinged, depending upon case type.

Movements:

Movements are designed and materials of construction selected to reduce friction and extend wear lif e. The Dur agauge’s stainless steel movement is a rotary geared design with Teflon coated wear parts.

Dials:

Dials are uniformly graduated and hav e highly legible black markings. A pointer dial stop pin at the 7:00 o’clock position is standard.

Windows:

The standard is glass on dry gauges and acrylic on liquid-filled gauges. Options are laminated safety glass, non-glare glass or acrylic.

Pointer s:

Duragauge pressure gauges have balanced micrometer adjustable pointers which can be repositioned without removal from the pinion shaft.

Viton,®T eflon,®Kalrez,®Kynar®– DuPont Trademark Carpenter 20

– Carpenter Steel Trademark

Inconel,

Monel®– Huntington Alloys Inc. Trademark Hastelloy – Cabot Corp. Trademark Nickel

– International Nickel Co., Inc. Trademark

Halocarbon

– Halocarbon Products Co. Trademark

Page 9

❶ Over 1000 psi – entire system must be 316 stainless steel.

Applicable only to hydrogen.

❷ Monel and 316 stainless steel are acceptable for oxygen service, provided the

instrument has been cleaned for oxygen service and is free from oil.

Oxalic Acid •

Oxygen (Gas)❷ • • Palmitic Acid >99% • Phosphoric Acid <80% • Picric Acid <10% • Propane (Dry) • • • Sea Water (Flowing) • Silver Nitrate <70% • Sodium Bicarbonate <20% • • Sodium Bisulfate <30% • Sodium Carbonate <40% • • Sodium Chromate <60% • • • • Sodium Cyanide • • Sodium Hydroxide < 40% • Sodium Hypochlorite <25% • Sodium Phosphate, Tri <60% • • • Sodium Silicate <50% • • • Sodium Sulfide <50% • Stannous Chloride <10% • Steam (Use siphon) • • • • Stearic Acid • Sulfur Dioxide (Dry) >99% • Sulfur Trioxide (Dry) >99% • Sulfuric Acid • Tannic Acid <80% • • • Tartaric Acid <50% • • Tin Chloride (ous) <10% • Toluene >99% • • • • Turpentine >98% • • • • Water (Tap) • • • Whiskey • Zinc Chloride <25% • Zinc Sulphate <40% •

Crude Oil (Sour) •

Crude Oil (Sweet) • • Ethyl Acetate • Ethylene Oxide >99% • • • Ferric Chloride <40% • Ferric Sulfate <10% • Ferrous Chloride <30% • Ferrous Sulfate <50% • Fluorine Gas (Dry) • Formaldehyde <95% • Formic Acid • Freons • • Furfural <10% • Gasoline • Glycerin >99% • • • • Hydrobromic Acid • Hydrochloric Acid • Hydrofluoric Acid • Hydrofluosilic Acid • Hydrogen ❶ • • Hydrogen Peroxide <50% • Kerosene • • • • Lactic Acid <70% • Magnesium Chloride <40% • Mercuric Chloride <60% • Mercury >99% • Milk • Naphtha >99% • • • • Naphthalene >99% • • Nickel Chloride >99% • Nitric Acid <95% • Nitrogen • • • • Oleic Acid •

Acetone • • • Acetic Acid <40% • Acetic Anhydride • Acetylene (Dry) • • Acrolein 100% • Air • • • • Alcohol, Ethyl • • • Alum. Chloride >10% • Alum. Sulfate 10-50% • Ammonia Gas (Dry) • • Ammonium Chloride <40% • Ammonium Nitrate <50% • Ammonium Sulfate <60% • Aniline>99% • Argon • • • • Beer • Benzidine >99% • Benzene <50% • • Benzoic Acid <70% • Boric Acid <25% • Bromine (Dry) • Butane • • • • Butyric Acid <10% • Calcium Chloride <80% • Calcium Hydroxide <50% • Carbon Dioxide • • • • Carbon Monoxide >99% • • • • Chlorine (Dry) • Chlorine (Moist) • Chloroform (Dry) • • Chromic Acid • Citric Acid 10-50% • Corn Oil •

Media Application Table

Ashcroft®Duragauge®Pressure Gauge

The media being measured must be compatible with the wetted parts of the pressure instrument. To use the chart below, locate the media whose pressure is to be measured and select a suitable material from those available. Diaphr agm seal information is contained in Bulletin DS-1. This is a simplified chart and

assumes the media temperature is below 200°F.

PLUS!

option, throttling devices and/or a liquid-filled instrument are recommended in applications with pulsation or vibration. These recommendations are only a guide, as service life is dependent on temperature, concentrations, catalysts that may be added, or

other conditions beyond our control. Consult Stratford, CT customer service for specific applications and for an y media not listed. More complete corrosion guide available on our website at

www.dresserinstrument.com

in the

Application Data Section.

Media Application

Any standard Bourdon tube material may be used in conjunction with a diaphragm seal, but the gauge selection should take into consideration the corrosive environment in which it is to operate. For diaphragm seals see Bulletin DS-1.

Brass or bronze

Steel

Stainless steel

Monel

Diaphragm seals*

Brass or bronze

Steel

Stainless steel

Monel

Diaphragm seals*

Brass or bronze

Steel

Stainless steel

Monel

Diaphragm seals*

Pressure Instrument

Material

Pressure Instrument

Material

Pressure Instrument

Material

Page 10

Pressure – kg/cm2and bar

Range

Figure Minor Outer scale

interval graduation in psi

0/1 0.1 0.01 0/14 0/1.6 0.2 0.02 0/22 0/2.5 0.5 0.02 0/35 0/4 0.5 0.05 0/55 0/6 0.5 0.05 0/85 0/10 1 0.1 0/140 0/16 2 0.2 0/220 0/25 5 0.2 0/350 0/40 5 0.5 0/550 0/60 5 0.5 0/850 0/100 10 1 0/1400 0/160 20 2 0/2200 0/250 50 2 0/3500 0/400 50 5 0/5500 0/600 50 5 0/8500 0/1000 100 10 0/14,000 0/1600 200 20 0/22,000 0/2500 500 20 0/35,000 0/4000 500 50 0/55,000 0/6000 1000 50 0/85,000

Vacuum

Range Figure interval Minor graduation

30/0 in. Hg 5 in 0.2 in 34/0 ft H2O 5 ft 0.5 ft

Range Tables

Ashcroft®Duragauge®Pressure Gauge

Pressure – psi

Range Figure interval Minor graduation

0/15 1 0.1 0/30 5 0.2 0/60 5 0.5 0/100 10 1 0/160 20 2 0/200 20 2 0/300 50 2 0/400 50 5 0/600 50 5 0/800 100 10 0/1000 100 10 0/1500 200 20 0/2000 200 20 0/3000 500 20 0/5000 500 50 0/6000 500 50 0/10,000 1000 100 0/20,000 2000 200 0/30,000 5000 200 0/50,000 5000 500 0/80,000 10,000 1000 0/100,000 10,000 1000

Compound

Figure interval Minor graduation

Range

in Hg psi in Hg psi

30˝ Hg/15 psi 5 3 0.5 0.2 30˝ Hg/30 psi 10 5 1 0.5 30˝ Hg/60 psi 10 10 1 1 30˝ Hg/100 psi 10 10 2 1 30˝ Hg/150 psi 10 20 5 2 30˝ Hg/200 psi 30 20 5 2 30˝ Hg/300 psi 30 50 5 2 30˝ Hg/400 psi 30 50 5 5 30˝ Hg/500 psi 30 50 5 5 30˝ Hg/600 psi 30 50 10 5

Combination

Range Figure interval Minor graduation

inner–psi outer–ft H

O psi ft H2O psi ft H2O

0/15 0/34 3 5 0.5 0.5 0/30 0/70 5 10 0.5 1 0/60 0/140 5 20 0.5 5 0/100 0/230 10 20 1 2 0/160 0/370 20 50 2 5 0/200 0/460 20 50 5 5 0/300 0/690 25 100 5 10

Compound – kg/cm2and bar

Range

Figure Minor Outer scale

interval graduation in psi

–1/0/1.5 0.2 0.02 30˝ Hg/20 –1/0/3 0.5 0.05 30˝ Hg/40 –1/0/5 0.5 0.05 30˝ Hg/70 –1/0/9 1 0.01 30˝ Hg/125 –1/0/15 2 0.02 30˝ Hg/215 –1/0/24 5 0.02 30˝ Hg/340

Vacuum – kg/cm2and bar

Range

Figure Minor Outer scale

interval graduation

–1/0 0.1 0.01 30˝ Hg

Retard

Range Figure interval Minor graduation

0/15 psi retard to 30 psi 1 psi-30 psi 0.25 psi-5 psi 0/30 psi retard to 60 psi 2 psi-60 psi 0.2 psi-10 psi 0/60 psi retard to 100 psi 2 psi-100 psi 0.5 psi-10 psi 30˝ Hg vac/75 psi 5˝ Hg/15 psi-150 psi 1˝ Hg/1 psi-5psi

retard to 150 psi 10˝ Hg vac/5 psi 2˝ Hg/1 psi 0.2˝ Hg/0.1 psi retard to 30˝ Hg vac 30˝ Hg 5˝ Hg retard to 30 psi 30 psi 5 psi

Metric Ranges

Standard Ranges

All Ashcroft dials have various total graduation marks, figure intervals and minor graduations. Standard dual scale metric ranges have a dominant metric inner scale. The outer scale is specified in psi. Some examples are shown. Duragauge gauges are made in accordance with ASME B40.1 entitled, “Gauges, Pressure, Indicating Dial T ype – Elastic Element ,” Accuracy grade 2A (±0.5% of span). The accuracy of a retard range gauge applies only to the expanded portion of the scale. The error in the compressed portion is –10% to +20% of the span. Maximum pressure at which a gauge is continually operated should not exceed 75% of full scale range. Consult customer service in Stratford, CT for non-standard dials.

Minor Graduations

Figure Intervals

Total Graduation

Graduations and figure intervals

Page 11

Range Tables

Ashcroft®Duragauge®Pressure Gauge

Receiver Gauge Ranges

Pressure – (kPa) kilopascal

Range Figure Minor Outer scale

interval graduation in psi

0/100 10 1 0/14 0/160 20 2 0/22 0/250 50 2 0/35 0/400 50 5 0/55 0/600 50 5 0/85 0/1000 100 10 0/140 0/1600 200 20 0/220 0/2500 500 20 0/350 0/4000 500 50 0/550 0/6000 500 50 0/850 0/10,000 1000 100 0/1400 0/16,000 2000 200 0/2200 0/25,000 5000 200 0/3500 0/40,000 5000 500 0/5500 0/60,000 5000 500 0/8500 0/100,000 10,000 1000 0/14,000 0/160,000 20,000 2000 0/22,000 0/250,000 50,000 2000 0/35,000* 0/400,000 50,000 5000 0/55,000*

Compound – (kPa) kilopascal

Range Figure Minor Outer scale

interval graduation in psi

–100/0/150 50 5 30˝ Hg/20 –100/0/300 50 5 30˝ Hg/40 –100/0/500 50 10 30˝ Hg/70 –100/0/900 100 10 30˝ Hg/125 –100/0/1500 200 20 30˝ Hg/215 –100/0/2400 500 20 30˝ Hg/340

Vacuum – (kPa) kilopascal

Range Figure Minor Outer scale

interval graduation

–100/0 10 1 30˝ Hg

Metric Ranges

Square Root Ranges

0/5 0/70 0/300 0/1500 0/10 0/80 0/350 0/2000 0/15 0/90 0/400 0/3000 0/20 0/100 0/500 0/4000 0/25 0/125 0/600 0/5000 0/30 0/150 0/700 0/10,000 0/40 0/175 0/800 0/50 0/200 0/900 0/60 0/250 0/1000

Receiver gauge

These ranges apply to any unit of pressure, temperature , liquid level, flow, or other value specified. Units in psi pressure will be denoted on the dial unless specified. Av ailable with input r anges of 3-15 psi or 3-27 psi.

0/1 0/2 0/3 0/4 0/5 0/6 0/7 0/8 0/9 0/10 0/11 0/12 0/14 0/15 0/16 0/17 0/18 0/19 0/20 0/21 0/25 0/26 0/28 0/30 0/35 0/40 0/45 0/50 0/55 0/60 0/65 0/70

200° Arc

0/75 0/80 0/85 0/90 0/95 0/100 0/120 0/140 0/160 0/180 0/200 0/250 0/300 0/350 0/400 0/500 0/600 0/700 0/760 0/800 0/900 0/1000 0/1500 0/2000 0/3000 0/4000 0/5000 0/10,000 0/15,000 0/20,000 0/30,000 0/50,000

30/80

5/110 20/120 40/120 20/150 30/150 40/150 50/150 30/180

130/180 100/200

20/220 40/220 30/240

100/240

30/250 50/250

100/250

30/300 50/300 80/300

100/300

50/350 80/350

150/350 100/400 150/400

50/500

100/500 200/500 300/500 200/700

100/600 200/700 100/800 200/800 300/800 400/800 450/800 500/800 650/800 200/900 400/900 700/900 200/1000 400/1000 500/1000 600/1000 800/1000 200/1100 400/1200 500/1200 600/1200

1000/1500

300/1600

1000/1600

600/1800 900/1800

1200/1800

700/2000 1000/2500 1500/2500

900/3000 1500/3000

Compound Ranges

30˝ Hg/0/15 psi 30" Hg/0/30 psi 30" Hg/0/60 psi 30" Hg/0/100 psi 30" Hg/0/150 psi 30" Hg/0/500 psi 30" Hg/0/800 psi

Page 12

Options

Ashcroft®Duragauge®Pressure Gauge

Case and ring options Code Comments

Hermetically Sealed Case H Available on types 41⁄

2˝ 1279 and 4

⁄

2,˝ 6˝ 1379 models only.

Gauge Heater HD Used for outdoor applications or other services where ambient temperatures

are –50°F. Available on 41⁄

2˝ 1379 model only.

Flush Mounting Ring - Steel, Black Epoxy 56 Available on 41⁄

2˝ 1279 and 4

⁄

2,˝ 6˝ 1379 models only (also called 1278 flush mounting ring).

Flush Mounting Ring - Stainless Steel, Polished 57 Available on 41⁄

2˝ 1279 and 4

⁄

2,˝ 6˝ 1379 models only (also called 1278 flush mounting ring).

Bourdon tube and system assembly options

AND10050-4 (1⁄

4˝ Tubing Conn.) AM

⁄

4˝ High Pressure Tubing Conn. 09 Standard on ranges 30,000 psi and up.

Overload Stop OS Used to protect the gauge against extreme pressures. Underload Stop VS Used to protect low pressure gauges against vacuum. Throttle Screws – Brass, stainless steel and Monel TS 0.031˝ Standard. Other sizes: .006, .0135, .020, .040, .050 and .070 (Monel .040 only). Capillary Bleeder BG Available in model 1379, 41⁄

2˝ Lower conn. only with stainless steel system. Max. pressure 1000 psi.

Tip Bleeder TB Available in bronze, St. St. or Monel Bourdon tube gauges only. Max. pressure 15,000 psi. Cleaning for Gaseous Oxygen 6B Not available with steel or bronze and

PLUS!

option Bourdon tubes. If Gauge is liquid-filled specify

Halocarbon as the fill. Cleaning for Liquid Oxygen Service 6D Free from Mercury Contamination MF Provided with free from mercury contamination certification (CD-2).

Link options

Slotted Link for Sudden Pressure Increase RJ

Unless specified, slotted link set for pressure increase. Accuracy 1% F.S. with slotted link. Slotted Link for Sudden Pressure Decrease S4

Liquid-filling options

Silicone Fill GV Halocarbon Fill GX For oxidixing media. Examples: chlorine, oxygen, nitric acid and sulfuric acid.

Pointer options

Red Set Hand (Single) SH Single stationary set hand used to indicate a specific pressure. Red Set Hand (Double) SJ Double stationary set hand used to indicate 2 specific pressures. Red Set Hand (Adjustable) EO Internally adjustable. Maximum Pointer EP Externally reset by a knob on outside of an acrylic window. Minimum Pointer EQ Externally reset by a knob on outside of an acrylic window.

Window options

Acrylic Window PD Ambient temperature limits –50/180°F. Laminated Safety Glass SG Ambient temperature limits –50/200°F. Non Glare Glass NG Ambient temperature limits –50/350°F.

Marking and tagging options

Dial Marking DA Service marking printed on dial. Paper Tagging of Carton and Gauge NN Tag is bonded to gauge case and carton. Stainless Steel Tagging of Gauge Case NH 300 series stainless steel tag is wired to gauge case.

Calibration options

Calibrate to Absolute Pressure AB

Test and certificate options

Mass Spectrometer Leak Test ML Special Certificate of Conformance CD-1A Non standard certificate of conformance. Certificate of Conformance CD-1 Conformance to specifications and/or drawings. Free From Mercury Contamination CD-2 Conformance to specifications and/or drawings and free from mercury contamination. Individual Certified Calibration Chart CD-4

Page 13

To order a Duragauge (sample coding shown)

Select: 45 1279 RS* 04L XXX 0/2,000 psi

1. Dial size–41⁄

2˝

2. Case type–1279

3. Bourdon tube and socket code

4. Connection–1⁄

4 NPT (02),

⁄

2 NPT (04), Lower (L), Back (B)

5. Optional features

6. Pressure range (see range tables on pages 10 & 11)

Table A – Case selection & mounting

Ring: Style Dial Size Ordering Case Case: Material Material Mounting/Connection (in) Code Type Finish Finish

41⁄

2 (45) 1279

(1 )

Phenolic Threaded Stem– Lower or back (Black) Reinforced Surface– Lower or back

Polypropylene Flush– Back: Specify X56

(Black) 41⁄

2, 6, 8

⁄

2 (45)(60)(85) 1377 Aluminum Hinged Flush– Back

Black epoxy coating Steel Stem– Lower or back

Black wrinkle

enamel coat 41⁄

2, 6, 8

⁄

2 (45)(60)(85) 1379

(1 )

Aluminum 41⁄

2˝, 6˝ Threaded rein- Stem– Lower or back

Black epoxy coating forced polypropylene Surface– Lower or back

81⁄

2˝ Hinged steel, black Flush– Back, specify X56

wrinkle enamel coat 81⁄

2˝ standard

6 (45) 2462 Polypropylene Bayonet lock Stem– Lower or back

(fiberglass reinforced) Polypropylene Surface– Lower or back, specify XBF (Black) (Black) Flush– Back, specify XBQ

6 (60) 1379

(1 )

Aluminum 6˝ Threaded rein- Flush– Lower or back

(high pressure) Black epoxy coating forced polypropylene Surface– Lower or back

How to Order

Ashcroft®Duragauge®Pressure Gauge

NOTES:

(1) Liquid-fillable or hermetically sealed when kit 101A202-01 (lower) or kit 101A203-01 (back) is ordered. (2) For selection of the correct Bourdon system material, see the media application table on page 9. (3) Use on applications where NACE MR-01-75 is specified for selection of the correct Bourdon system material.

(*) “S” denotes solid front case design

Table B – System, connection & location

Bourdon Tube & Tip Material

(2)

Tube & NPT Conn.

(all joints TIG welded except code“A”) Socket Socket Conn. & Location & Range Selection

Material

(2)

Code Case Style Code Code Code Limits (psi)

C510 Grade A Phosphor Bronze Tube

Brass (A) (S) Solid Front Vac./1000

Brass Tip, Silver Brazed (04) 1⁄

4130 alloy steel 1018 steel (B) (S) Solid Front (STD) Lower (L) Vac./5000 316 stainless steel 1018 steel (R) (S) Solid Front (02) 1⁄

4 Vac./20,000

316 stainless steel 316 stainless steel (S) (S) Solid Front (OPT) Back (B) Vac./20,000 K 500 Monel

®(3)

Monel 400 (P) (S) Solid Front Vac./30,000

Inconel 718

316 stainless steel (WW) (SH) Solid Front (09) 1⁄

4 50,000/80,000/100,000

Herm. Sealed High Pres.

GAUGE ACCURACY

Duragauge gauges are made in accordance with ANSI B40.1 (Gauges, pressure and vacuum, indicating dial type – elastic element), Accuracy Grade 2A (±0.5% of span). Because of hysteresis, the downscale accuracy of a 20,000 psi gauge (S) or (R) code is 1.2%. Maximum pressure at which a gauge is continually operated should not exceed 75% of full scale range.

Page 14

Dial

Size A B C D E F G H K M P S T U CC LL Weight

Inches (lbs)

Dial

Size A B C D E F G H J L T V Weight

Inches (lbs)

Dimensions

Ashcroft®Duragauge®Pressure Gauge

Case Type 1377

Case Type 1279

⁄

2˝ Lower Connection

41⁄

2˝ Back Connection

41⁄

2˝ & 6˝ Lower Connection 4

⁄

2˝ & 6˝ Back Connection

81⁄

2˝ Back Connection

81⁄

2˝ Lower Connection

41⁄

513⁄16 33⁄8 51⁄16 15⁄8 53⁄8 15⁄8 315⁄16

⁄4 1 .218

⁄8 25⁄8

21⁄

(148) (86) (129) (41) (137) (41) (100) (20) (25) (6) (16) (67)

41⁄

63⁄

32 5

⁄8 315⁄16 47⁄8

#10-24 21⁄

(148) (137) (100) (124)

79⁄16 27⁄8 43⁄4 11⁄16 7 15⁄8 41⁄2 13⁄8 11⁄16 61⁄2 21⁄85⁄8

⁄8

⁄4

⁄

4–20

⁄8–1⁄2

(192) (73) (121) (27) (178) (41) (114) (35) (27) (165) (54) (16) (16)

(19) (3)(13)

81⁄

101⁄16 95⁄8 6 9 1

⁄

4–20 4

⁄

(257) (244) (152) (229)

3-L dia. holes on E dia. B.C.

Nuts & washers not supplied by Dresser

3 Mounting studs CC threaded equally spaced on E dia. B.C.

Hole in panel

3 Mounting studs CC threaded equally spaced on E dia. B.C.

Hole in panel

Page 15

Dial

Size A B C D E F G H J K

Inches

41⁄2

513⁄16 313⁄32 47⁄8 15⁄8 53⁄8 11⁄8 315⁄16

(148) (86) (124) (41) (137) (42) (100)

⁄8 11⁄16

79⁄16 31⁄2 65⁄8 15⁄8 7 11⁄2 41⁄2

(20) (27)

—

(192) (89) (162) (41) (178) (42) (114)

81⁄2

101⁄16 27⁄8 43⁄4 11⁄16 95⁄8 15⁄8 6 13⁄8

—

⁄16

(256) (73) (121) (27) (244) (41) (152) (35) (27)

Dial

Size A B C D E F G H H-1 J KK L

Min. Max.

M S T Wgt.

Inches (lbs)

63⁄8 27⁄16 43⁄47⁄8 53⁄8 15⁄8 315⁄16 49⁄16 49⁄325⁄64 211⁄16 .2181⁄16

⁄2 6

⁄165⁄8

(163) (62) (120) (22) (137) (42) (100) (116) (109) (2) (69) (6) (2) (13) (152) (17) (16)

Dimensions

Ashcroft®Duragauge®Pressure Gauge

Case Type 1379

Case Type 2462

6˝ Lower Connection

6˝ Back Connection

Stem Surface Panel

41⁄

2˝ & 6˝ Lower Connection 4

⁄

2˝ & 6˝ Back Connection

81⁄

2˝ Back Conn.

81⁄

2˝ Wall Conn.

81⁄

2˝ Lower Conn.

Note: Dimensions in brackets ( ) are millimeters.

Dial

Size L M N P S T V CC LL Wgt.

Inches (lbs)

41⁄2 21⁄2

.218

— —

21⁄8

—

⁄8 25⁄8

—

(6) (54) (16) (67)

⁄

31⁄8

(3)(13)

81⁄2

9 39⁄

—

⁄16

— —

#10-24 41⁄2

(228) (83) (17)

Hole in panel

Nuts & washers not supplied by Dresser

3 Mounting studs CC threaded equally spaced on E dia. B.C.

3-L dia. holes on E dia. B.C.

J W

3-L Dia holes on E Dia. B.C.

H-I

Hole in

panel

Page 16

All specifications are subject to change without notice. All sales subject to standard terms and conditions. © Instrument Division, Dresser Equipment Group, Inc. 50MWP 3/00 1P8/94

Instrument Division Sales and Customer Service Locations

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U.S. Sales Offices

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International Headquarters

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International Operations

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