BARTON CHART RECORDER

Product Details :

Barton Chart Recorders Models 202E, 202N, 242E, and J8A
Recorder Charts & Pens, Inc. specializes in Barton Chart Recorders and Barton Chart Recorder supplies for the oil and gas industry.

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.

Barton Chart Recorders are available for both 8" and 12" charts and in a variety of sensor and mounting configurations.

The Barton Chart Recorder Models 202E, 242E, and 202N utilize a 12-inch chart that has been widely used in gas transmission and distribution fields requiring accurate calibration, even under extreme variations in static pressue and ambient temperatures. The 202E is available in 1 to 4 pen configurations (DP+3 additional pens). The additional pens can be used to record temperature and supplemental pressure data.

Product Details :

Overview
Our BARTON 199 differential pressure units (DPUs) serve as actuating units for a wide variety of instruments. All models feature rupture-proof bellows.

Each DPU consists of a bellows unit assembly (BUA) and removable pressure housings. Within the BUA, flexible bellows are secured to a centerplate. In dual-bellows models, the movable bellows are rigidly connected by a dual valve stem that passes through the centerplate. Valve seats, in the centerplate passage, form a seal with the valves. Contacting the valve stem in the centerplate is a drive arm pivoted on the end of a sealed torque tube. The bellows is filled with a clean, noncorrosive, low-freezing point liquid. A range spring assembly provides tension against applied pressures. 

In operation, pressure is applied to both sides of the bellows. Any difference in pressure causes the bellows to move until the spring effect (range springs) balances out the force. The linear motion of the bellows (proportional to the DP) is transmitted as a rotary motion through the torque tube. In dual-bellows units, if the bellows are subjected to a DP greater than the unit’s DP rating, a valve closes and traps the fill liquid in the bellows — fully supporting the bellows and preventing rupture. Since opposing valves are used, full protection is provided in either direction. 

The BARTON 199N NACE DPU is a 199 DPU specifically designed to meet NACE requirements for HzS service. It can measure DP up to 2000 psi (138 bar) without damage to the unit due to overpressure. For DP up to 15 psi (1 bar), a 3-3/4" diameter bellows is used; above 15 psi (1 bar), a 2 1/8" diameter bellows is used. All other features and functions are the same as the standard M199 DPU.