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MEASUREMENT SYSTEMS

BARTON

®

Cameron's Barton Chart Recorders - 25235 Chart Recorders

Models 202E, 202N, 242E, and J8A

Barton chart recorders are the industry standard for accurate, reliable measurementand recording of pressure, differential pressure, and temperature in a wide variety of applications. In addition, DP models utilize Barton’s rupture-proof bellows DPU as the actuating unit – with features like overrange protection and pulsation dampening (on some models).

Common Components

• Case – is made of rugged,lightweight die-cast aluminum thatfeatures a built-in rain-shield. It is finished in polyurethane electrostatic powder paint that has a highresistance to weathering, scratches,and industrial fumes. aircraft-type door hinge (made of 302 SST)provides excellent resistance to saltspray and H • Recording Mechanism – All partsare stainless steel for long life. Thepen mount is exceptionally ruggedand pen shafts are fitted with ball pivots to minimize friction. All linksare adjustable, with micrometeradjustments for accurate calibration. All adjustments have screwdriver slots to simplify calibration. Disposablepens are standard. • Pressure Elements – Used in Models 202E, 242E, and J8A areprecision wound helical-type availablein a variety of materials – pressure ranges from 0-30-in. mercury vacuum(0 - 14.7 psi/1 bar) to 0 - 30,000 psi(0 - 2,068 bar). The Model 202N uses a K-Monel element – pressure ranges from 0 - 250 psi (0 - 17 bar) to 0 - 6,000 psi (0 - 414 bar).Connections available in 1/4-in. NPT for ranges less than 10,000 psi (689bar). Ranges greater than 10,000 psi (689 bar) utilize an Aminco 9/16–18 (1/4-in. ODT) female connection.• span of more than 50°F (27°C) and the high temperature limit must be greaterthan 95°F (35°C).
2 S. A closed neoprenegasket, non-absorbent to fluids andresistant to oils and most solvents, provides the seal between the door and the case. Thermal Systems – Consist of abourdon tube, a capillary with stainless steel armor, and a bulb witha bendable extension. All parts arestainless steel. Systems are available in Class V (mercury fill with an 11/16-in. OD bulb) or Class I (hydrocarbon fillw/ a 3/8-in. OD bulb). Temperatureranges for each design are listed below. A thermal system must have a • Class VA (fully compensated) -40°to 600°F (-40°to 315°C) • Class VB (case compensated): -40°to 600°F (-40°to 315°C) • Optional “S” versions use astainless steel case or a corrosion resistant “offshore coating” forharsh saltwater environments.• • Class IA (fully compensated) –temperature range varies with fill material•ethyl-benzene, -125°to 350°F (-87°to 177°C)•kerosene, -20°to 500°F (-29°to 260°C)•alcohol, -200°to 150°F (-129°to 66°C) Chart Drive – Available in batteryand spring-wound versions with awide variety of chart speeds. Allchart drives, with simple positive chart lock hub, are interchangeable.• NuFlo™ Charts – are made from“woodfree” paper – a special lowshrinkage high quality product that eliminate eccentric and ellipticalerrors. Charts are shrink wrapped to help maintain the factory default size until it is opened by the user.Once a box of charts is opened, itcan be stored in the supplied plastic re-sealable storage bag. • Class IB (case compensated) -temperature range varies with fillmaterial•ethyl-benzene, -125°to 350°F (-87°to 177°C)•kerosene, -20°to 500°F (-29°to 260°C)•alcohol, -200°to 150°F (-129°to 66°C) • Accuracy : +/- 1.0% of F.S. • Hardware : Capillary standard lengthis 10 ft. (additional lengths available)