BARTON巴顿记录仪242E

BARTON巴顿记录仪242E

Barton ®
Chart Recorders
Models 202E, 202ER, 202N, 242E, and J8A
Barton chart recorders are the industry standard for accurate,
reliable measurement and 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
that features a built-in rain-shield. It is finished in
polyurethane electrostatic powder paint that has a high
resistance to weathering, scratches, and industrial fumes.
aircraft-type door hinge (made of 302 SST) provides excellent
resistance to salt spray and H 2 S. A closed neoprene gasket,
non-absorbent to fluids and resistant to oils and most solvents,
provides the seal between the door and the case.
Optional “S" versions use a stainless steel case for harsh
saltwater environments or a corrosion resistant “offshore
coating."
Overview
? Chart Drive — available in battery and spring-wound
versions with a wide variety of chart speeds. All chart drives,
with simple positive chart lock hub, are interchangeable.
? Charts — are made from moisture-resistant, 7-point paper
with high-grade copper engravings that eliminate eccentric
and elliptical errors. All models, except J8A, utilize 12-inch
circular charts that are interchangeable with Graphic Controls
or Bristol charts. The J8A utilizes compact 8-inch charts.
? Recording Mechanism — All parts are stainless steel for
long life. The pen mount is exceptionally rugged and pen shafts
are fitted with ball pivots to minimize friction. All links are
adjustable, with micrometer adjustments for accurate
calibration. A cam screw allows rotation of the pen mounting
for accurate tracking of pens on the chart time arc. All
adjustments have screwdriver slots to simplify calibration.
Disposable pens are standard.
? Pressure Elements — used in Models 202E, 242E, and J8A
are precision wound helical-type available in a variety of
materials — pressure ranges from 0-30’’ 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 - 200
psi (0 - 14 bar) to 0 - 6,000 psi (0 - 414 bar). Connections
available in 1/4’’ NPT for ranges less than 10,000 psi (689 bar).
Ranges greater than 10,000 PSI (689 bar) utilize an Aminco
9/16–18 (1/4’’ ODT) female connection.
? Thermal Systems — consist of a bourdon tube, a capillary
(w/SST armor), and a bulb (w/bendable extension). All parts
are SST. Systems available in Class V (mercury fill w/11/16"
O.D. bulb) or Class I (hydrocarbon fill w/3/8" O.D. bulb). Invar
available in Class V only. Standard temperature ranges are: 0°F
to +[100, 150, 200, or 300]°F (-18°C to +[38, 66, 93, or 149]°C).
Class VA (self/full compensation): -40°F/°C to +1200°F
(+649°C)[self] or +600°F (+316°C)[fully]
Class VB (Case compensated): -40°F/°C to +600°F (+316°C)
Class IA (full) & IB (self): -200 to +500°F (-129 to +260°C)
Accuracy: ±1.0% of F.S.
Hardware: Capillary standard length is 10 ft. with additional
lengths available.

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