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ITT BARTON 763A User Manual Download Page 2

2

Safety

Before installing this product, become familiar with the installation instruc-

tions presented in Section 3 and all safety notes throughout.

!

 

 

WARNING:

 This symbol 

 information about practices or circum-

stances that can lead to personal injury or death, property damage, or 

economic loss.

CAUTION:   Indicates actions or procedures which if not performed correctly 

may lead to personal injury or incorrect function of the instrument 

or connected equipment.

IMPORTANT:  Indicates actions or procedures which may affect instrument operation or 

may lead to an instrument response that is not planned.

Slope ....................................................................................................... 12

Process Temperature .............................................................................. 12

Pulsation.................................................................................................. 12

Leakage................................................................................................... 12

Manifolding.................................................................................................. 13

Electrical Connections ................................................................................ 13

Load and Line Resistance Calculations .................................................. 14

EMI/RFI Shielding ....................................................................................... 15

Initial Calibration Adjustments ..................................................................... 16

Calibration Check .................................................................................... 16

Startup Procedure ................................................................................... 18

Shutdown Procedure ............................................................................... 18

Section 4—Maintenance .............................................................................. 19

General Field and Periodic Maintenance .................................................... 19

Periodic Calibration ..................................................................................... 19

Transmitter Cover Removal ........................................................................ 21

Transmitter Cover Reinstallation ............................................................. 21

Operation of the EGS Quick Disconnect Connector Assembly................... 22

Leadwire/Connector Replacement.............................................................. 23

Removal of the EGS Quick Disconnect Connector Assembly................. 23

Installation of the EGS Quick Disconnect Connector Assembly.............. 23

Removal of the Barton Style Connector Assembly.................................. 24

Installation of the Barton Style Connector Assembly............................... 24

Troubleshooting .......................................................................................... 26

Section 5—Assembly Drawing and Parts List ........................................... 27
Section 6—Dimensional Drawings ............................................................. 29

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Summary of Contents for BARTON 763A

Page 1: ...formance 4 Application 5 Storage 6 Section 2 Theory of Operation 7 Basic Components 7 Gage Pressure Sensing Element 7 Electronic Transmitter 7 Basic Operation 7 Reverse Polarity Protection 7 Regulator...

Page 2: ...2 Leakage 12 Manifolding 13 Electrical Connections 13 Load and Line Resistance Calculations 14 EMI RFI Shielding 15 Initial Calibration Adjustments 16 Calibration Check 16 Startup Procedure 18 Shutdow...

Page 3: ...g element is a C type Bourdon tube that actuates the elec tronic transmitter circuit The pressure elements are available in Haynes Alloy 25 which is compatible with most process media requirements and...

Page 4: ...per volt above 15 VDC 10 50 mA Load Effect 0 05 of factory calibrated span per 100 Ohm change 4 20 mA 0 1 of factory calibrated span per 100 Ohm change 10 50 mA Power Supply Effect 0 025 of factory ca...

Page 5: ...cation The Model 763 Gage Pressure Transmitter was subjected to IEEE 323 functional service in a harsh environment LOCA MSLB Subsequent to the sembly using a Bourdon tube strain gage and connecting wi...

Page 6: ...ctrically to induce stress during acceler ated aging Vibration cycling using 0 2 G sweeps over the 1 100 Hz range 1 0 octave min Storage Storage per ANSI N45 2 2 1978 Level B 70 F 20 C 20 F 11 C in fa...

Page 7: ...it The bridge output signal is conditioned and converted to a 4 20 mA or 10 50 mA output signal by the transmitter electronics Basic Operation The electronic transmitter is basically a loop current re...

Page 8: ...8 Section 2 Model 763A Gage Pressure Transmitter Figure 2 1 Operational block diagram www ittcontrols com contact ittcontrols com...

Page 9: ...with the feedback net work to be proportional to the bridge output Temperature Compensation The 763A is temperature compensated at the factory Only those repairs IMPORTANT Combined zero and or span c...

Page 10: ...10 Section 2 Model 763A Gage Pressure Transmitter www ittcontrols com contact ittcontrols com...

Page 11: ...Pre Operating Instructions The following steps must be performed at the time of installation to ensure that the instrument will perform to its original calibration 1 Verify that the transmitter is mo...

Page 12: ...wnward from the transmitter when used in gas instal lations to prevent liquid entrapment Slope all piping upward from the transmitter when used in liquid applica tions to prevent gas entrapment WARNIN...

Page 13: ...his section for determining the proper power supply DC output voltage Field wiring connections for the transmitter are presented in Figure 3 2 If the transmitter is equipped with an EGS Quick Disconne...

Page 14: ...Vdc TVDC 15 Vdc IDC 20 mA RT 1 900 Ohms 0 02 53 15 Example 3 Calculation to determine maximum loop resistance with power supply 30 5 Vdc but 53 Vdc for 10 50 mA systems VDC 40 Vdc TVDC 30 5 Vdc IDC 5...

Page 15: ...equired voltage at the transmitter Use the actual value when available otherwise use worst case value Use Figure 3 3 as a reference to determine if the maximum calculated value of RT RLine RLoad RExt...

Page 16: ...over must be removed to adjust calibration See Transmitter Cover Removal page 21 for instructions WARNING Do not tamper with the Bourdon tube inside the enclosure or the delicate wires connected to it...

Page 17: ...3 1 Calibration Checkpoints Applied Calibration Pressure Checkpoint of Full Scale Output 4 20 mA Transmitter 10 50 mA Transmitter Current 0 08 mA Voltage 0 04 Vdc Current 0 2 mA Voltage 0 04 Vdc 0 4 m...

Page 18: ...n the plugs until they are snug no applicable torque values IMPORTANT The plugs should be tightened only to prevent loosening due to vibration without interfering with zero and span potentiometer adju...

Page 19: ...trument may be out of calibration A calibration should consist of at least nine checkpoints from minimum to full scale calibrated pressure and back to minimum For optimum results the test equipment sh...

Page 20: ...dc 10 mA 2 Vdc 25 8 mA 4 Vdc 20 mA 4 Vdc 50 12 mA 6 Vdc 30 mA 6 Vdc 75 16 mA 8 Vdc 40 mA 8 Vdc 100 20 mA 10 Vdc 50 mA 10 Vdc This value includes the effects of conformance non linearity deadband hyste...

Page 21: ...from the jackholes and place with the other cap screws Transmitter Cover Reinstallation IMPORTANT Replacement of the transmitter cover O ring is recommended each time the transmitter is disassembled...

Page 22: ...halves by positioning the male D plug into the female D hole When the two parts are aligned they can be pushed together until the O ring is seated against the sealing surface on the con nector halves...

Page 23: ...ctor assembly if applicable 5 Carefully unscrew and remove the unmated connector assembly Take care not to damage the wires and prevent damage to the transmitter by using a wrench to hold the conduit...

Page 24: ...on page 21 3 Disconnect the red and black signal leads from the transmitter circuit board TB 1 7 and TB 2 6 as shown in Figure 4 3 4 Insert the connector tool Part No 9A 0764 1174B into the transmitte...

Page 25: ...ack signal leads of the connector assembly to the transmitter circuit board TB 1 7 and TB 2 6 6 Install new O rings into the grooves of the transmitter cover Lightly lubricate the O rings with DC High...

Page 26: ...power source Load Resis tance Resistance too high Replace load resistance or repair as required Transmission Cable Resistance or length of cable in excess of Measure cable loop resistance Electronic...

Page 27: ...27 Model 763A Gage Pressure Transmitter Section 5 Section 5 Assembly Drawing and Parts List Figure 5 1 763A assembly www ittcontrols com contact ittcontrols com...

Page 28: ...Cover 9A C0001 1056R 1 6 Washer Flat S S 1 4 9A C0003 1029K 8 7 Screw Cap Socket Hd S S 1 2 20 x 1 2 9A C0220 1009J 8 8 Case Cover Optional 9A C0764 1066C 1 9 Case Cover Standard External Adjustment...

Page 29: ...ction show the outline dimensions for the 763A Gage Pressure Transmitter These images are based on production drawing 9A C0763 10173 Figure 6 1 763A transmitter front view connector assembly not shown...

Page 30: ...30 Section 6 Model 763A Gage Pressure Transmitter Figure 6 3 763A transmitter side view www ittcontrols com contact ittcontrols com...

Page 31: ...ILITY OR FIT NESS FOR A PARTICULAR PURPOSE OR OTHERWISE 2 Components manufactured by any supplier other than Cameron shall bear only the warranty made by the manufacturer of that product and Cameron a...

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