With more than one million BARTON® DPU-based instruments in service around the world today, Barton’s Measurement Systems division is a premier supplier of reliable and accurate chart recorders, indicators, switches and pneumatic controllers. Originally developed in the early 1920s, our differential pressure technology features a welded bellows assembly that increases accuracy while dramatically reducing the effects of wear. To facilitate quick and easy repairs all DPU based instruments are supported with pre-calibrated exchange or repaired sub-module bellows assemblies.
Wide Selection of DP Ranges (including absolute, zero-center, and split ranges)
Safe working pressures up to 6000 PSI
High resolution scale spans a 270o arc
Seal-welded 224C DPU available for leak-proof metering
Optional one or two narrow deadband switches

199 DPU Actuated

DP Spans: 10″ W.C. to 100 PSID
Built in pulsation dampener
Field changeable range spring

199 DPU Actuated Switches & Indicators

Models 289A & 291B Differential Pressure Switches
Models 200A & 200AS Differential Pressure Indicators

224 DPU Actuated

DP Spans: 30″ W.C. to 1000 PSID
Compact and Lightweight

224 DPU Actuated Switches & Indicators

Models 288C, 290D, 318C, Differential Pressure Switches
Models 226C, 227C, 232C, 247C, 450C Differential Pressure Indicators

Extra product images

Barton 227C Differential Pressure Indicator Barton 318C Differential Pressure Switch


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