Cameron BARTON 764 User Manual

BARTON
®
MODEL 764
DIFFERENTIAL PRESSURE
TRANSMITTER
User Manual
Part No. 9A-C10880, Rev. 05
January 2020
Contents
Section 1—Introduction ................................................................................. 5
General ......................................................................................................... 5
Product Description....................................................................................... 5
Di󰀨erential Pressure Unit (DPU) ............................................................... 5
Electronic Transmitter................................................................................ 5
Power Supply ............................................................................................ 5
Specications ................................................................................................ 6
Performance .............................................................................................. 6
Application ................................................................................................. 7
Storage: ..................................................................................................... 8
Section 2—Theory of Operation .................................................................... 9
Basic Components ........................................................................................ 9
Di󰀨erential Pressure Unit (DPU) ............................................................... 9
Draining or Venting.....................................................................................9
Temperature Compensation......................................................................10
Bellows......................................................................................................10
Strain Gage Assembly...............................................................................10
Range Springs..........................................................................................10
Electronic Transmitter...............................................................................10
Basic Operation ...........................................................................................11
Reverse Polarity Protection ......................................................................11
Regulator ................................................................................................. 12
Strain Gage Bridge Network.................................................................... 12
Signal Amplier........................................................................................ 12
Current Amplier...................................................................................... 12
Temperature Compensation........................................................................ 12
Section 3—Installation and Operation ........................................................ 13
Unpacking/Inspection.................................................................................. 13
Pre-Operating Instructions .......................................................................... 13
Mounting ..................................................................................................... 13

Cameron BARTON 764 Specifications

General

Model	BARTON 764
Category	Transmitter
Manufacturer	Cameron
Output Signal	4-20 mA
Enclosure Rating	NEMA 4X, IP66
Accuracy	±0.1% of span
Wetted Materials	316 Stainless Steel
Operating Temperature	-40 to 85°C (-40 to 185°F)
Process Connection	1/4" NPT