Emerson Rosemount 644 with HART Protocol User manual

Reference Manual
00809-0200-4728, Rev SA
July 2018
Rosemount™644 Temperature Transmitter
with HART®Protocol

i
Reference Manual
00809-0200-4728, Rev SA
Contents
July 2018
Contents
1Section 1: Introduction
1.1 Using this manual. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
1.1.1 Transmitter overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
2Section 2: Configuration
2.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2.2 Safety messages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.3 System readiness . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.3.1 Confirm correct device driver. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.3.2 Surges/transients . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.4 Configuration methods . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.4.1 Configuring on the bench . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.4.2 Selecting a configuration tool . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.4.3 Setting the loop to manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.4.4 Failure mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.4.5 HART software lock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.5 Verify configuration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.5.1 Field Communicator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.5.2 AMS Device Manager . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.5.3 LOI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.5.4 Checking transmitter output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.6 Basic configuration of the transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2.6.1 Mapping the HART variables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2.6.2 Configuring the sensor(s) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
2.6.3 Setting output units. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
2.7 Configure dual sensor options. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
2.7.1 Differential temperature configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
2.7.2 Average temperature configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
2.7.3 Hot Backup configuration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
2.7.4 Sensor drift alert configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
2.8 Configure device outputs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
2.8.1 Re-range the transmitter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
2.8.2 Damping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
2.8.3 Configure alarm and saturation levels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
2.8.4 Configuring the LCD display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
2.9 Inputting device information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Contents

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Contents
2.9.1 Tag, date, descriptor and message . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
2.10 Configure measurement filtering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
2.10.1 50/60 Hz filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
2.10.2 Resetting the device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
2.10.3 Intermittent sensor detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
2.10.4 Open sensor hold off . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
2.11 Diagnostics and service. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
2.11.1 Performing a loop test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
2.11.2 Simulate digital signal (digital loop test) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
2.11.3 Thermocouple degradation diagnostic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
2.11.4 Minimum/maximum tracking diagnostic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
2.12 Establishing multi drop communication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
2.12.1 Changing a transmitter address. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
2.13 Using the transmitter with the HART Tri-Loop . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
2.13.1 Set the transmitter to burst mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
2.13.2 Set process variable output order . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
2.14 Transmitter security . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
2.14.1 Available security options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
3Section 3: Hardware Installation
3.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
3.2 Safety messages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
3.3 Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
3.3.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
3.3.2 Commissioning. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
3.3.3 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
3.3.4 Mechanical. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
3.3.5 Electrical. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
3.3.6 Environmental. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
3.4 Installation procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
3.4.1 Set the alarm switch. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
3.4.2 Mount the transmitter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
3.4.3 Install the device. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
3.4.4 Multichannel installations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
3.4.5 LCD display installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

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4Section 4: Electrical Installation
4.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
4.2 Safety messages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
4.3 Wiring and powering the transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
4.3.1 Sensor connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
4.3.2 Power the transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
4.3.3 Ground the transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
4.3.4 Wiring with a Rosemount 333 HART Tri-Loop (HART/4–20 mA only) . . . . . . . . . . . . 62
5Section 5: Operation and Maintenance
5.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
5.2 Safety messages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
5.3 Calibration overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
5.3.1 Trimming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
5.4 Sensor input trim . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
5.4.1 Application: Linear offset (single-point trim solution). . . . . . . . . . . . . . . . . . . . . . . . . . 67
5.4.2 Application: Linear offset and slope correction (two-point trim) . . . . . . . . . . . . . . . . 67
5.4.3 Recall factory trim—sensor trim. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
5.4.4 Active calibrator and EMF compensation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
5.5 Trim the analog output. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
5.5.1 Analog output trim or scaled analog output trim. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
5.5.2 Analog output trim. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
5.5.3 Performing a scaled output trim . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
5.6 Transmitter-sensor matching . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
5.7 Switching HART Revision . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
5.7.1 Generic menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
5.7.2 Field Communicator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
5.7.3 AMS Device Manager . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
5.7.4 LOI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
6Section 6: Troubleshooting
6.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
6.2 Safety messages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
6.3 4-20 mA/HART output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
6.4 Diagnostic messages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
6.4.1 Failed status. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
6.4.2 Warning status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
6.4.3 Other LCD display messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80

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6.5 Return of materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
7Section 7: Safety Instrumented Systems (SIS) Certification
7.1 SIS certification. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
7.2 Safety certified identification. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
7.3 Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
7.4 Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
7.4.1 Damping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
7.4.2 Alarm and saturation levels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
7.5 Operation and maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
7.5.1 Proof test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
7.5.2 Partial proof test 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
7.5.3 Comprehensive proof test 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
7.5.4 Comprehensive proof test 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
7.5.5 Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
7.6 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
7.6.1 Failure rate data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
7.6.2 Failure values. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
7.6.3 Product life. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
AAppendix A: Reference Data
A.1 Product Certifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87
A.2 Ordering Information, Specifications, and Drawings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87
BAppendix B: Field Communicator Menu Trees and Fast Keys
B.1 Field Communicator menu trees . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
B.2 Field Communicator Fast Keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
CAppendix C: Local Operator Interface (LOI)
C.1 Number entry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97
C.2 Text entry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98
C.2.1 Scrolling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98
C.3 Timeout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100
C.4 Saving and canceling. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100
C.5 LOI menu tree . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101
C.6 LOI menu tree – extended menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102

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Rosemount™644 Temperature
Transmitter
Railmount Headmount Headmount
Rosemount 644 Hardware Revision 31 2 2
Device Revision 7 8 9
HART®Revision 5 5 7
Read this manual before working with the product. For personal and system safety, and for optimum
product performance, make sure to thoroughly understand the contents before installing, using, or
maintaining this product.
The United States has two toll-free assistance numbers and one international number.
Customer Central
1-800-999-9307 (7:00 a.m. to 7:00 p.m. CST)
National Response Center
1-800-654-7768 (24 hours a day)
Equipment service needs
International
1-(952)-906-8888
The products described in this document are NOT designed for nuclear-qualified applications.
Using non-nuclear qualified products in applications that require nuclear-qualified hardware or
products may cause inaccurate readings.
For information on Rosemount nuclear-qualified products, contact a Emerson™Sales Representative.
Failure to follow these installation guidelines could result in death or serious injury.
Make sure only qualified personnel perform the installation.
Explosions could result in death or serious injury.
Do not remove the connection head cover in explosive atmospheres when the circuit is live.
Before connecting HART in an explosive atmosphere, make sure the instruments in the loop
are installed in accordance with intrinsically safe or non-incendive field wiring practices.
Verify the operating atmosphere of the transmitter is consistent with the appropriate
hazardous locations certifications.
All connection head covers must be fully engaged to meet explosion-proof requirements.
Process leaks could result in death or serious injury.
Do not remove the thermowell while in operation.
Install and tighten thermowells and sensors before applying pressure.
Electrical shock could cause death or serious injury.
Use extreme caution when making contact with the leads and terminals.

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Reference Manual
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Introduction
July 2018
1
Introduction
Section 1 Introduction
1.1 Using this manual
This manual is designed to assist in the installation, operation, and maintenance of Rosemount™644
Head Mount, Field Mount, and Rail Mount Transmitters with the HART®protocol.
Section 2: Configuration provides instruction the commissioning and operating the Rosemount 644
HART Transmitter. The information explains how to configure software functions and many
configuration parameters on an Asset Management System, a Field Communicator, and the Local
Operator Interface display option.
Section 3: Hardware Installation contains mechanical installation instructions for the transmitter.
Section 4: Electrical Installation contains electrical installation instructions and considerations for the
transmitter.
Section 5: Operation and Maintenance contains common operation and maintenance techniques for the
transmitter.
Section 6: Troubleshooting provides troubleshooting techniques for the most common transmitter
operating problems.
Section 7: Safety Instrumented Systems (SIS) Certification provides identification, installation,
configuration, operation and maintenance, and inspection information for Safety Instrumented Systems
as it pertains to the Rosemount 644 Head Mount and Field Mount Temperature Transmitter.
Appendix A: Reference Data supplies procedure on how to get the specifications, ordering information,
and product certification.
Appendix B: Field Communicator Menu Trees and Fast Keys contains Field Communicator menu trees
and Field Communicator Fast Keys.
Appendix C: Local Operator Interface (LOI) contains instructions for number entry, text entry, as well as
the LOI menu tree and LOI extended menu tree.

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Introduction
1.1.1 Transmitter overview
The Rosemount 644 Head Mount and Field Mount Temperature Transmitters support the following
features:
HART configuration with Selectable HART revision capability (Revisions 5 or 7)
Accepts either 1 or 2 inputs from a wide variety of sensor types (2-, 3-, and 4-wire RTD, thermocouple,
mV and Ohm)
A compact transmitter size with electronics completely encapsulated in protective silicone and
enclosed in a plastic housing ensuring long-term transmitter reliability
Optional Safety Certification Option (IEC 61508 SIL 2)
Optional enhanced accuracy and stability performance
Optional LCD display with extended temperature ratings of –40 to 85 °C
Optional advanced LCD display with local operator interface (LOI)
The Rosemount 644 Head Mount Transmitter is available in two housing materials (Aluminum and
SST) and various housing options that allow for mounting flexibility in a variety of environmental
conditions. The Rosemount 644 Field Mount is available in an aluminum housing.
Special dual-sensor features include Hot Backup™, Sensor Drift Alert, first good, differential and
average temperature measurements, and four simultaneous measurement variable outputs in
addition to the analog output signal.
Additional advanced features include: Thermocouple degradation diagnostic, which monitors
thermocouple health, and process and transmitter minimum/maximum temperature tracking.
The Rosemount 644 Rail Mount Temperature Transmitter supports the following features:
4–20 mA/HART protocol (Revision 5)
Accepts one sensor input from a wide variety of sensor types (2-, 3-, and 4-wire RTD, Thermocouple,
mV and Ohm)
Completely encapsulated electronics to ensure long term transmitter reliability
Refer to the following literature for a full range of compatible connection heads, sensors, and
thermowells provided by Emerson.
Rosemount Volume 1 Temperature Sensors and Accessories (English) Product Data Sheet
Rosemount DIN-Style Temperature Sensors and Thermowells (Metric) Product Data Sheet

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Configuration
Section 2 Configuration
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 3
Safety messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 4
System readiness . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 4
Configuration methods . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 5
Verify configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 9
Basic configuration of the transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 11
Configure dual sensor options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 15
Configure device outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 20
Inputting device information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 26
Configure measurement filtering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 27
Diagnostics and service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 30
Establishing multi drop communication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 34
Using the transmitter with the HART Tri-Loop . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 35
2.1 Overview
This section contains information on commissioning and tasks that should be performed on the bench
prior to installation. Field Communicator, AMS Device Manager, and Local Operator Interface (LOI)
instructions are given to perform configuration functions. For convenience, Field Communicator Fast Key
sequences are labeled “Fast Keys,” and abbreviated LOI menus are provided for each function below. The
LOI is only available on the Rosemount™644 Head Mount and Field Mount designs, and the configuration
instructions referencing the interface will not apply to the Rail mount form factor.
Full Field Communicator menu trees and Fast Key sequences are available in Appendix B: Field
Communicator Menu Trees and Fast Keys. Local operator interface menu trees are available in
Appendix C: Local Operator Interface (LOI).

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2.2 Safety messages
Instructions and procedures in this section may require special precautions to ensure the safety of the
personnel performing the operations. Information that potentially raises safety issues is indicated by a
warning symbol ( ). Refer to the following safety messages before performing an operation preceded
by this symbol.
2.3 System readiness
Confirm HART®revision capability
If using HART based control or asset management systems, confirm the HART capability of those
systems prior to transmitter installation. Not all systems are capable of communicating with HART
Revision 7 protocol. This transmitter can be configured for either HART Revision 5 or 7.
For instructions on how to change the HART revision of your transmitter, see “System readiness” on
page 4.
2.3.1 Confirm correct device driver
Verify the latest Device Driver files are loaded on your systems to ensure proper communications.
Download the latest Device Driver at Emerson.com/Rosemount or Fieldcomm.org.
Failure to follow these installation guidelines could result in death or serious injury.
Make sure only qualified personnel perform the installation.
Explosions could result in death or serious injury.
Do not remove the connection head cover in explosive atmospheres when the circuit is live.
Before connecting a Field Communicator in an explosive atmosphere, make sure the instruments in
the loop are installed in accordance with intrinsically safe or non-incendive field wiring practices.
Verify the operating atmosphere of the transmitter is consistent with the appropriate hazardous
locations certifications.
All connection head covers must be fully engaged to meet explosion-proof requirements.
Process leaks could result in death or serious injury.
Do not remove the thermowell while in operation.
Install and tighten thermowells and sensors before applying pressure.
Electrical shock could cause death or serious injury.
Use extreme caution when making contact with the leads and terminals.

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2.3.2 Surges/transients
The transmitter will withstand electrical transients of the energy level encountered in static discharges or
induced switching transients. However, high-energy transients, such as those induced in wiring from
nearby lightning strikes, welding, heavy electrical equipment, or switching gears, can damage both the
transmitter and the sensor. To protect against high-energy transients, install the transmitter into a
suitable connection head with the integral transient protector, option T1. Refer to the Rosemount 644
Product Data Sheet for more information.
2.4 Configuration methods
The Rosemount 644 Transmitter can be configured either before or after installation. Configuring the
transmitter on the bench using either a Field Communicator, AMS Device Manager, or LOI ensures all
transmitter components are in working order prior to installation.
The Rosemount 644 Transmitter can be configured either on-line or off-line using a Field Communicator,
AMS Device Manager or the optional LOI (Head mount and field mount). During on-line configuration,
the transmitter is connected to a Field communicator. Data is entered in the working register of the
communicator and sent directly to the transmitter.
Off-line configuration consists of storing configuration data in a Field Communicator while it is not
connected to a transmitter. Data is stored in nonvolatile memory and can be downloaded to the
transmitter at a later time.
2.4.1 Configuring on the bench
To configure on the bench, required equipment includes a power supply, a digital multimeter (DMM),
and Field Communicator, AMS Device Manager, or a LOI – option M4.
Connect the equipment as shown in Figure 2-1. Connect HART Communication leads at any termination
point in the signal loop. To ensure successful HART Communication, a resistance of at least 250 Ohms
must be present between the transmitter and the power supply. Connect the Field Communicator leads
to the clips behind the power (+,–) terminals on the top of the device. Avoid exposing the transmitter
electronics to the plant environment after installation by setting all transmitter jumpers during the
commissioning stage on the bench.
Table 2-1. Rosemount 644 Device Revisions and Files
Software date Identify device Find device driver files Review instructions Review
functionality
Date NAMUR Software
Revision
HART Software
Revision
HART Universal
Revision(1)
1. NAMUR Software Revision is located on the hardware tag of the device. HART Software Revision can be read using a HART Communication tool.
Device
Revision(2)
2. Device Driver file names use Device and DD Revision, e.g. 10_01. HART Protocol is designed to enable legacy device driver revisions to continue to communicate with
new HART devices. To access new functionality, the new Device Driver must be downloaded. It is recommended to download the new Device Driver files to ensure full
functionality.
Document Changes to
Software(3)
3. HART Revision 5 and 7 Selectable. Dual Sensor support, Safety Certified, Advanced Diagnostics (if ordered), Enhanced Accuracy and Stability (if ordered).
June 2012 1.1.1 01
5 8 Rosemount 644
Temperature Transmitter
Reference Manual
See Footnote 3
for list of changes
7 9
Set all transmitter hardware adjustments during commissioning to avoid exposing the transmitter
electronics to the plant environment after installation.

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Figure 2-1. Powering the Transmitter for Bench Configuration
A. Power supply
B. Field Communicator
Note
Signal loop may be grounded at any point or left ungrounded.
A Field Communicator may be connected at any termination point in the signal loop. The signal loop
must have between 250 and 1100 Ohms load for communications.
Max torque is 6 in-lb (0.7 N-m).
2.4.2 Selecting a configuration tool
Field Communicator
The Field Communicator is a hand-held device that exchanges information with the transmitter from the
control room, the instrument site, or any wiring termination point in the loop. To facilitate
communication, connect the Field Communicator, shown in this manual, in parallel with the transmitter
(see Figure 2-1). Use the loop connection ports on the rear panel of the Field Communicator. The
connections are non-polarized. Do not make connections to the serial port or the Ni-Cad recharger jack
in explosive atmospheres. Before connecting the Field Communicator in an explosive atmosphere make
sure the instruments in the loop are installed in accordance with intrinsically safe or non-incendive field
wiring practices.
There are two interfaces available with the Field Communicator: Traditional and Dashboard interfaces.
All steps using a Field Communicator will be using Dashboard interfaces. Figure 2-2 shows the Device
Dashboard interface. As stated in “System readiness” on page 4, it is critical that the latest DD’s are
loaded into the Field Communicator for optimal transmitter performance.
Visit Emerson.com/Rosemount to download latest DD library.
Turn on the Field Communicator by pressing the ON/OFF key. The Field Communicator will search for a
HART-compatible device and indicate when the connection is made. If the Field Communicator fails to
connect, it indicates that no device was found. If this occurs, refer to Section 6: Troubleshooting.
Rosemount 644 Head Mount and Field Mount Rosemount 644 Rail Mount
B
A
B
250 Ω≤ RL ≤1100 Ω
A

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Figure 2-2. Field Communicator Device Dashboard Interface
Field Communicator menu trees and Fast Keys are available in Appendix B: Field Communicator Menu
Trees and Fast Keys Configuring with AMS Device Manager.
With an AMS Device Manager software package, you can commission and configure instruments,
monitor status and alerts, troubleshoot from the control room, perform advanced diagnostics, manage
calibration, and automatically document activities with a single application.
Full configuration capability with AMS Device Manager requires loading the most current Device
Descriptor (DD) for this device. Download the latest DD at Emerson.com/Rosemount or Fieldcomm.org.
Note
All steps listed in this product manual using AMS Device Manager assume the use of Version 11.5.
LOI
The LOI requires option code M4 to be ordered. To activate the LOI push either configuration button.
Configuration buttons are located on the LCD display (must remove housing cover to access the
interface. See Table 2-2 for configuration button functionality and Figure 2-3 for configuration button
location. When using the LOI for configuration, several features require multiple screens for a successful
configuration. Data entered will be saved on a screen-by-screen basis; the LOI will indicate this by flashing
“SAVED” on the LCD display each time.
Note
Entering into the LOI menu effectively disables the ability to write to the device by any other host or
configuration tool. Make sure this is communicated to necessary personnel before using the LOI for
device configuration.

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Figure 2-3. LOI Configuration Buttons
A. Configuration buttons
LOI password
An LOI password can be entered and enabled to prevent review and modification of device configuration
via the LOI. This does not prevent configuration from HART or through the control system. The LOI
password is a four-digit code that is to be set by the user. If the password is lost or forgotten the master
password is “9307”. The LOI password can be configured and enabled/disabled by HART communication
via a Field Communicator, AMS Device Manager, or the LOI.
LOI menu trees are available in Appendix C: Local Operator Interface (LOI).
2.4.3 Setting the loop to manual
When sending or requesting data that would disrupt the loop or change the output of the transmitter,
set the process application loop to manual. The Field Communicator, AMS Device Manager or LOI will
prompt you to set the loop to manual when necessary. Acknowledging this prompt does not set the loop
to manual. The prompt is only a reminder; set the loop to manual as a separate operation.
2.4.4 Failure mode
As part of normal operation, each transmitter continuously monitors its own performance. This
automatic diagnostics routine is a timed series of checks repeated continuously. If diagnostics detect an
input sensor failure or a failure in the transmitter electronics, the transmitter drives its output to low or
high depending on the position of the failure mode switch. If the sensor temperature is outside the range
limits, the transmitter saturates its output to 3.9 mA for standard configuration on the low end (3.8 mA if
configured for NAMUR-compliant operation) and 20.5 mA on the high end (or NAMUR-compliant).
These values are also custom configurable by the factory or using the Field Communicator.The values to
which the transmitter drives its output in failure mode depend on whether it is configured to standard,
NAMUR-compliant, or custom operation. See Rosemount 644 Tempeture Transmitter Product Data
Sheet for standard and NAMUR-compliant operation parameters.
Table 2-2. LOI Button Operation
Button
Left No SCROLL
Right Yes ENTER
A

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2.4.5 HART software lock
The HART Software Lock prevents changes to the transmitter configuration from all sources; all changes
requested via HART by the Field Communicator, AMS Device manager or the LOI will be rejected. The
HART Lock can only be set via HART communication, and is only available in HART Revision 7 mode. The
HART Lock can be enabled or disabled with a Field Communicator or AMS Device Manager.
Field Communicator
From the HOME screen, enter the Fast Key sequence.
AMS Device Manager
1. Right click on the device and select Configure.
2. Under Manual Setup select the Security tab.
3. Select the Lock/Unlock button under HART Lock (Software) and follow the screen prompts.
2.5 Verify configuration
It is recommended that various configuration parameters are verified prior to installation into the
process. The various parameters are detailed out for each configuration tool. Depending on what
configuration tool(s) are available follow the steps listed relevant to each tool.
2.5.1 Field Communicator
Configuration parameters listed in Table 2-3 below are the basic parameters that should be reviewed
prior to transmitter installation. A full list of configuration parameters that can be reviewed and
configured using a Field Communicator are located in Appendix B: Field Communicator Menu Trees and
Fast Keys. A Rosemount 644 Device Descriptor (DD) must be installed on the Field Communicator to
verify configuration.
1. Verify device configuration using Fast Key sequences in Table 2-3.
a. From the HOME screen, enter the Fast Key sequences listed in Table 2-3.
Device Dashboard Fast Keys 3, 2, 1
Table 2-3. Device Dashboard Fast Key Sequences
Function HART 5 HART 7
Alarm Values 2, 2, 5, 6 2, 2, 5, 6
Damping Values 2, 2, 1, 5 2, 2, 1, 6
Lower Range Value (LRV) 2, 2, 5, 5, 3 2, 2, 5, 5, 3
Upper Range Value (URV) 2, 2, 5, 5, 2 2, 2, 5, 5, 2
Primary Variable 2, 2, 5, 5, 1 2, 2, 5, 5, 1
Sensor 1 Configuration 2, 1, 1 2, 1, 1
Sensor 2 Configuration (1)
1. Available only if option code (S) or (D) is ordered.
2, 1, 1 2, 1, 1
Tag 2, 2, 7, 1, 1 2, 2, 7, 1, 1
Units 2, 2, 1, 5 2, 2, 1, 4

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2.5.2 AMS Device Manager
1. Right click on the device and select Configuration Properties from the menu.
2. Navigate the tabs to review the transmitter configuration data.
2.5.3 LOI
Press any configuration button to activate the LOI. Select VIEW CONFIG to review the below parameters.
Use the configuration buttons to navigate through the menu. The parameters to be reviewed prior to
installation include:
Tag
Sensor configuration
Units
Alarm and saturation levels
Primary variable
Range values
Damping
2.5.4 Checking transmitter output
Before performing other transmitter on-line operations, review the Rosemount 644 Transmitter digital
output parameters to ensure that the transmitter is operating properly and is configured to the
appropriate process variables.
Checking or setting process variables
The “Process Variables” menu displays process variables, including sensor temperature, percent of range,
analog output, and terminal temperature. These process variables are continuously updated. The default
primary variable is Sensor 1. The secondary variable is the transmitter terminal temperature by default.
Field Communicator
From the HOME screen, enter the Fast Key sequence.
AMS Device Manager
Right click on the device and select Service Tools from the menu. The Variables tab displays the following
process variables:
Primary, second, third and fourth variables, as well as the analog output.
LOI
To check the process variables from the LOI, the user must first configure the display to show the desired
variables (see “Configuring the LCD display” on page 25). Once the desired device variables are chosen,
simply EXIT the LOI menu and view the alternating values on the display screen.
Device Dashboard Fast Keys 3, 2, 1

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2.6 Basic configuration of the transmitter
The Rosemount 644 Transmitter must be configured for certain basic variables in order to be
operational. In many cases, all of these variables are pre-configured at the factory. Configuration may be
required if the transmitter is not configured or if the configuration variables need revision.
2.6.1 Mapping the HART variables
Field Communicator
The “Variable Mapping” menu displays the sequence of the process variables. Select the sequence below
to change this configuration. The Rosemount 644 Transmitter single sensor input configuration screens
allow selection of the primary variable (PV) and the secondary variable (SV). When the Select PV screen
appears Snsr 1 must be selected.
The Rosemount 644 Transmitter dual-sensor option configuration screens allow selection of the Primary
Variable (PV), Secondary Variable (SV), Tertiary Variable (TV), and Quaternary Variable (QV). Variable
choices are Sensor 1, Sensor 2, Differential Temperature, Average Temperature, Terminal Temperature,
and Not Used. The 4–20 mA analog signal represents the Primary Variable.
From the HOME screen, enter the Fast Key sequence.
AMS Device Manager
1. Right click on the device and select the Configure menu.
2. In the left navigation pane select Manual Setup then on the HART tab.
3. Map each variable individually or use the Re-map Variables method to guide you through the
re-mapping process.
4. Select Apply when complete.
Device Dashboard Fast Keys 2, 2, 8, 6
ON/OFFVIEW CONFIG
ZERO TRIM
UNITS
RERANGE
LOOP TEST
DISPLAY
DISPLAY
EXTENDED MENU
EXIT MENU
SENSOR 1
SENSOR 2*
ANALOG
PV
AVG
1ST GOOD
DIFF
% RANGE
TERM
MNMAX1*
MNMAX2*
MNMAX3*
MNMAX4*
BACK TO MENU
EXIT MENU

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LOI
Follow flow chart to select the desired mapped variables. Use the SCROLL and ENTER buttons to select
each variable. Save by selecting SAVE as indicated on the LCD screen when prompted. See Figure 2-4 on
page 12 for an example of a mapped variable with the LOI.
Figure 2-4. Mapping Variables with LOI
2.6.2 Configuring the sensor(s)
Sensor configuration includes setting the information for:
Sensor type
Connection type
Units
Damping values
Sensor serial number
RTD 2-wire offset
Field Communicator
The configure sensors method will guide you through the configuration of all necessary settings
associated with configuring a sensor including:
For a full list of Sensor Types available with the Rosemount 644 Transmitter and their associated levels of
accuracy.
From the HOME screen, enter the Fast Key sequence.
AMS Device Manager
1. Right click on the device and select Configure.
2. In the left navigation pane select Manual Setup and select the Sensor 1or Sensor 2 tab depending
on the need.
3. Individually select the sensor type, connection, units and other sensor related information as desired
from the drop down menus on the screen.
4. Select Apply when complete.
Device Dashboard Fast Keys 2, 1, 1
CALIBRAT
DAMPING
VARIABLE MAP
VARIABLE MAP
TAG
ALM SAT VALUES
PASSWORD
....
RE-MAP PV
RE-MAP 2V
RE-MAP 3V
RE-MAP 4V
....
VIEW CONFIG
SENSOR CONFIG
UNITS
RERANGE
LOOP TEST
DISPLAY
EXTENDED MENU
EXTENDED MENU
EXIT MENU