00810-0177-4728 Rev EA 9/01 Models 644H and 644R Smart Temperature Transmitters EN
EN FIELD MANUAL Model 644 Smart Temperature Transmitter Model 644 Revision: 5.5.2, 5.5.3, 5.5.4 HART® Communicator Field Device Revision: Dev v5, DD v2 NOTICE Read the complete product manual before installing, operating, or servicing the Models 644H and 644R Smart Temperature Transmitters. Failure to comply with safe transmitter installation and operating practices can cause severe injury or death. Rosemount Inc.
EN TABLE OF CONTENTS Table of Contents Section 1: Introduction Safety Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1 Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1 Transmitter Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2 Manual Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2 Considerations . . . . . . . . . . . . . . . . . . . . . . . .
EN Rosemount Inc Section 4: Hardware and Software Maintenance and Troubleshooting Safety Message . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-1 Diagnostic Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-1 Hardware . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-1 Model 275 HART Communicator . . . . . . . . . . . . . . . . . . . . . . .4-4 LCD Meter . . . . . . . . . . . . . . . . . . . . . . . . . .
EN SECTION 1 Introduction Safety Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Transmitter Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Manual Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
EN Rosemount Inc TRANSMITTER OVERVIEW Thank you for choosing the Model 644 Smart Temperature Transmitter. Features of the Model 644 include: • Accepts inputs from a wide variety of sensors • Configuration using HART protocol • Electronics that are completely encapsulated in epoxy and enclosed in a metal housing, making the transmitter extremely durable and ensuring long-term reliability • A compact size and two housing options allowing mounting flexibility for the control room or the field Rosemount Inc.
Rosemount Inc EN Appendix B: Hazardous Locations Certifications • Hazardous locations certifications • Installation drawings Appendix C: Model 644 and 244E Manual Supplement • Comparison between new and old Models 644 and 244E • Specifications CONSIDERATIONS General Electrical temperature sensors such as RTDs and thermocouples produce low-level signals proportional to their sensed temperature.
EN SECTION 2 Installation Safety Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Tools needed for installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Installation Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Field Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Rosemount Inc Figure 2-1.
Rosemount Inc EN TOOLS NEEDED FOR INSTALLATION The tools needed for installation are as follows: Models 644H and 644R • Transmitter Model 275 HART Communicator • Hart communicator • Mounting apparatus MOUNTING The Models 644H and 644R transmitters will operate within specifications for ambient temperatures between –40 and 185 °F (–40 and 85 °C).
Rosemount Inc Retrofitting a Model 644H for Use in an Existing Threaded Sensor Connection Head To mount a Model 644H in an existing threaded sensor connection head (former option code L1), order the Model 644H retrofit kit (part number 00644-5321-0010). The retrofit kit includes a new mounting bracket and all associated hardware necessary to facilitate the installation of the Model 644H in the existing head (see Figure 2-15). Figure 2-3.
Rosemount Inc EN Head Mount Transmitter with DIN Plate Style Sensor Refer to Volume 2 of the Rosemount Sensors Product Data Sheet (document number 00813-0101-2654) for complete sensor and mounting accessory information. To complete the assembly, follow the steps described below. 1. Attach the thermowell to the pipe or process container wall. Install and tighten the thermowell before applying pressure. 2. Set the transmitter failure mode switch (see Figure 2-11 on page 2-11). 3.
Rosemount Inc Head Mount Transmitter with Threaded Sensor Refer to Volume 1 of the Rosemount Sensors Product Data Sheet (document number 00813-0100-2654) for complete sensor and mounting accessory information. To complete the assembly, follow the steps as described below. 1. Attach the thermowell to the pipe or process container wall. Install and tighten thermowells before applying pressure. 2. Attach necessary extension nipples and adapters. Seal the nipple and adapter threads with silicone tape. 3.
Rosemount Inc EN Rail Mount Transmitter with Integral Mount Sensor Refer to Volume 2 of the Rosemount Sensors Product Data Sheet (document number 00813-0101-2654) for complete sensor and mounting accessory information. To complete the assembly, follow the procedure described below. 1. Attach the transmitter to a suitable rail or panel. 2. Attach the thermowell to the pipe or process container wall. Install and tighten the thermowell before applying pressure. 3.
Rosemount Inc Rail Mount Transmitter with Threaded Sensor Refer to Volume 1 of the Rosemount Sensors Product Data Sheet (document number 00813-0100-2654) for complete sensor and mounting accessory information. To complete the assembly, follow the procedure described below. 1. Attach the transmitter to a suitable rail or panel. 2. Attach the thermowell to the pipe or process container wall. Install and tighten the thermowell before applying pressure. 3. Attach necessary extension nipples and adapters.
Rosemount Inc EN Multichannel Installations You can connect several transmitters to a single master power supply, as shown in Figure 2-8. In this case, the system may be grounded only at the negative power supply terminal. In multichannel installations where several transmitters depend on one power supply, and the loss of all transmitters would cause operational problems, consider an uninterrupted power supply or a back-up battery.
EN Rosemount Inc Use the following procedure to install the meter. 1. If the transmitter is installed in a loop, secure the loop and disconnect the power. If the transmitter is installed in an enclosure, remove the cover from the enclosure. 2. Decide meter orientation (the meter can be rotated in 90° increments). To change meter orientation, remove the screws located above and below the display screen. Lift the meter off the meter spacer.
Rosemount Inc EN The transmitters will accept inputs from a variety of RTD and thermocouple types. Refer to Figure 2-11 on page 2-11 when making sensor connections. Use the following steps to wire the transmitter: 1. Connect the positive lead from the power supply to the transmitter terminal marked “+” and the negative lead to the transmitter terminal marked “–” (see Figure 2-10 and Figure 2-12). 2. Tighten the terminal compression screws to ensure adequate contact. No additional power wiring is required.
Rosemount Inc SENSOR CONNECTIONS RTD or Ohm Inputs The transmitters will accept a variety of RTD configurations, including 2-wire, 3wire, 4-wire, and compensation loop designs. If the transmitter is mounted remotely from a 3-wire or 4-wire RTD, it will operate within specifications, without recalibration, for lead wire resistances of up to 10 ohms per lead (equivalent to 1,000 feet of 20 AWG wire). In this case, the leads between the RTD and transmitter should be shielded.
Rosemount Inc EN FAILURE MODE Changing Switch Positions See Figure 2-11 On the Model 644H, the failure mode switch is located on top of the transmitter near the power terminals. On the Model 644R the switch is located in the center of the front panel. Manually set the orange switch to either high or low alarm by positioning it accordingly. To set high alarm, position the switch towards the “HI” mark; to set low alarm, position the switch in the opposite direction.
EN Rosemount Inc 2-14
EN SECTION 3 Operation Safety Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 3-1 Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 3-1 Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
EN Rosemount Inc Surges and Transients To protect against high-energy transients, install the transmitter into a suitable connection head with the Rosemount Model 470 Transient Protector. Refer to the Model 470 Transient Protector Product Data Sheet (document number 00813-01004191) for more information. CONFIGURATION Online Menu The HART Communicator Online Menu provides direct access to Fast Key Sequences and all software functions of the transmitter.
Rosemount Inc EN Figure 3-2.
EN Rosemount Inc Table 3-1.
EN SECTION 4 Hardware and Software Maintenance and Troubleshooting Safety Message . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 4-1 Diagnostic Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 4-1 SAFETY MESSAGE Instructions and procedures in this section may require special precautions to ensure the safety of the personnel performing the operations.
EN Rosemount Inc TABLE 4-2. Hardware diagnostic messages Symptom Potential Source Corrective Action Transmitter Does Not Communicate with HART Communicator Loop Wiring • Check the revision level of the transmitter device descriptors (DDs). The communicator should report Dev v5, DD v2. • Check for a minimum of 250 ohms resistance between the power supply and HART-based communicator connection. • Check for adequate voltage to the transmitter.
Rosemount Inc EN Symptom Potential Source Low Output or No Output Sensor Element • Connect a HART-based communicator and enter the Transmitter test mode to isolate a sensor failure. • Check the process variable to see if it is out of range. Loop Wiring • Check for adequate voltage to the transmitter. It should be 12.0 to 42.4 V dc (over entire 3.75 to 23 mA operating range). • Check for shorts and multiple grounds. • Check for proper polarity at the signal terminal. • Check the loop impedance.
EN Rosemount Inc Model 275 HART Communicator Table 4-3 provides a guide to diagnostic messages used by the Model 275 HART Communicator (HC). Variable parameters within the text of a message are indicated with the notation . Reference to the name of another message is identified by the notation [another message]. TABLE 4-3.
Rosemount Inc EN Message Description Illegal date Illegal month Illegal year Incomplete exponent The day portion of the date is invalid. The month portion of the date is invalid. The year portion of the date is invalid. The exponent of a scientific notation floating point variable is incomplete. The value entered is not complete for the variable type. Polling for multidropped devices at addresses 1–15.
EN Rosemount Inc Message Description Save data from device to configuration memory Saving data to configuration memory. Sending data to device. There are write only variables which have not been edited. Please edit them. There is unsent data. Send it before shutting off? Too few data bytes received Transmitter Fault Prompts user to press SAVE softkey to initiate a device-to-memory transfer. Data is being transferred from a device to configuration memory. Units for has changed.
Rosemount Inc EN LCD Meter In addition to the output, the LCD meter displays abbreviated diagnostic messages for troubleshooting the transmitter. To determine the cause of a message, use a Model 275 HART Communicator to further interrogate the transmitter. A description of each diagnostic message is identified in Table 4-4. The device sometimes requires additional interrogation to determine the source of the warning.
EN Rosemount Inc Alarm Description OFLOW The location of the decimal point, as configured in the meter setup, is not compatible wit the value to be displayed by the meter. For example, if the meter is measuring a process temperature greater than 9.9999 degrees and the meter decimal point is set to 4-digit precision, the meter will display an “OFLOW” message because it is only capable of displaying a maximum of 9.9999 when set to 4-digit precision.
EN SECTION A Reference Data Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Dimensional Drawings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Ordering Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
EN Rosemount Inc NOTE A HART Communicator requires a loop resistance between 250 and 1100 ohms. Do not communicate with the transmitter when power is below 12 V dc at the transmitter terminals.
Rosemount Inc EN Performance The Model 644 transmitters maintain a specification conformance of at least 3σ. Accuracy Table A-6. Model 644 Input Options and Accuracy. Sensor Options Sensor Reference 2-, 3-, 4-Wire RTDs Pt 100 PT 100 Pt 200 Pt 500 Pt 1000 Ni 120 Cu 10 IEC 751, 1995 (α = 0.00385) JIS 1604, 1981 (α = 0.003916) IEC 751, 1995 (α = 0.00385) IEC 751, 1995 (α = 0.00385) IEC 751, 1995 (α = 0.00385) Edison Curve No. 7 Edison Copper Winding No.
EN Rosemount Inc Sensor Options Sensor Reference DIN Type U DIN 43710 Type W5Re/ W26Re Millivolt Input ASTM E 988–96 2-, 3-, 4-Wire Ohm Input Input Ranges –200 to 600 0 to 2000 Recommended Min. Span (1) –328 to 1112 32 to 3632 Digital Accuracy(2) 25 45 ± 0.35 ± 0.63 25 45 ± 0.70 ± 1.26 –10 to 100 mV 3 mV ±0.015 mV 0 to 2000 ohms 20 ohm ±0.45 ohm D/A Accuracy (3) ±0.03% of span ±0.03% of span ±0.03% of span ±0.
Rosemount Inc EN Ambient Temperature Effect Transmitters can be installed in locations where the ambient temperature is between –40 and 85 °C (–40 and 185 °F). Sensor Options Temperature Effects per 1.0 °C (1.8 °F) Change in Ambient Temperature(1) Ranges D/A Effect 2-, 3-, 4-Wire RTDs Pt 100 (α = 0.00385) PT 100 (α = 0.003916) Pt 200 • 0.003 °C (0.0054 °F) Entire sensor input range 0.001% of span • 0.003 °C (0.0054 °F) Entire sensor input range 0.001% of span • 0.004 °C (0.
EN Rosemount Inc Temperature Effects Example When using a Pt 100 (α = 0.00385) sensor input with a 0–100 °C span at 30 °C ambient temperature: Digital Temperature Effects: 0.003 °C x (30 – 20) = 0.03 °C D/A Effect: [0.001% of 100] x (30 – 20) = 0.01 °C Worst Case Error: Digital + D/A + Digital Temperature Effects + D/A Effects = 0.15 °C + 0.03 °C + 0.03 °C + 0.01 °C = 0.22 °C Total Probable Error: 0.15 2 + 0.03 2 + 0.03 2 + 0.01 2 = 0.16°C RTDs and thermocouples have a stability of ±0.
Rosemount Inc EN CE Electromagnetic Compatibility Compliance Testing The Models 644H and 644R meet all requirements listed under IEC 61326: Amendment 1, 1998. Self Calibration The analog-to-digital measurement circuitry automatically self-calibrates for each temperature update by comparing the dynamic measurement to extremely stable and accurate internal reference elements.
Rosemount Inc DIMENSIONAL DRAWINGS Model 644R Model 644H Shown with Standard Compression Screw Terminals Sensor Terminals 60 (2.4) 33 (1.3) Meter Connector 24 (1.0) Communication Terminals Power Terminals Failure Mode Switch Power Terminals 33 (1.30) 644-1360A02A Standard Sensor Terminals Shown with WAGO® Spring Clamp Terminals 36 (1.4) 104 (4.1) WAGO Spring Clamp Sensor Terminals Meter Connector Communication Terminals Power Terminals 60 (2.4) 33 (1.3) 24 (1.0) Failure Mode Switch 34 (1.
Rosemount Inc EN Threaded-Sensor Universal Head (Option code J5 or J6) Integral DIN Style Sensor Connection Head Shown with LCD Meter (see note below) 112 (4.41) Label 96 (3.76) 104 (4.09) 95 (3.74) Meter Cover 103 (4.03) with LCD Meter 128 (5.04) with LCD Meter 75 (2.93) SST “U” Bolt Mounting, 2inch Pipe 100 (3.
Rosemount Inc Mounting G-Rail (asymmetric) Top Hat Rail (symmetric) Universal Clip for Mounting to a Wall or a Rail (part number 03044-4301-0001) Mounting Hardware Transmitter Transmitter Rail Clip Rail Clip Top Hat Rail Grooves Screw Holes for Mounting to a Wall 3044-4001A01B, 644-5302B01A, D02A G-Rail Grooves Mounting Hardware Model 644H Retrofit Kit Existing Threaded Sensor Connection Head (former option code L1) Kit includes replacement bracket and screws.
Rosemount Inc EN ORDERING INFORMATION Table A-7.
EN Rosemount Inc Table A-7. Model 644H and Model 644R Ordering Table • = Available — = Not available J5 J6 C1 A1 CN F6 C2 C4 Q4 M5 G1 G2 G3 G5 DIN Plate Style Temperature Sensor Users (EMEA-Europe, Middle East, and Africa) Remote Mount Universal Head (Junction Box), Aluminum Alloy with 2-in. SST Pipe Bracket (M20 Entries) Universal Head (Junction Box), Aluminum Alloy with 2-in.
Rosemount Inc EN Table A-8.
EN Rosemount Inc Custom The transmitter can be ordered with custom configuration. Use Table A-10 to determine the requirements when specifying the custom configuration. Table A-10.
EN SECTION B Hazardous Locations Certifications Safety Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Hazardous Locations Certifications . . . . . . . . . . . . . . . . . . . . . . . . . . . European ATEX Directive Information. . . . . . . . . . . . . . . . . . . . . . . . Installation Drawings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
EN Rosemount Inc Factory Mutual (FM) Approvals E5 Explosion-Proof for Class I, Division 1, Groups B, C, and D. Dust-Ignition Proof for Class II, Division 1, Groups E, F, and G. Dust-Ignition Proof for Class III, Division 1 hazardous locations when installed in accordance with Rosemount Drawing 00644-1049. Non-Incendive for Class I, Division 2, Groups A, B, C, and D. Ambient temperature limits: –50 to 85 °C. Conduit seal not required for compliance with NEC 501-5a(1).
Rosemount Inc EN CENELEC/KEMA Approvals ED ATEX Category II 2 G Certification number KEMA 99ATEX8715 Flameproof (Zone 1) (Model 644H only) EEx d IIC T6 (Tamb = –40 to 65 °C). Requires a connection head or Universal head.
EN Rosemount Inc Special Conditions for Safe Use (X): The transmitter must be installed so that its external terminals and communication pins are protected to at least IP20. N7 Type n Approval, Ex n IIC T6 (Tamb = –40 to 60 °C) Special Conditions for Safe Use (X): The assembly must be installed such that its external terminals and communication pins are protected to at least the requirements of IP54.
Rosemount Inc EN The following information is provided as part of the labeling of the transmitter: • Name and address of the manufacturer (Rosemount U.S.
EN Rosemount Inc Figure B-3. Canadian Standards Association (CSA) Intrinsic Safety Installation Drawing 00644-1064, Rev.
Rosemount Inc EN 644-1059A01A Figure B-4. Canadian Standards Association (CSA) Explosion-Proof Installation Drawing 00644-1059, Rev.
Rosemount Inc Figure B-5. Factory Mutual (FM) Intrinsic Safety Installation Drawing 00644-0009, Rev.
Rosemount Inc EN Figure B-6. Factory Mutual (FM) Explosion-Proof Installation Drawing 00644-1049, Rev.
EN Rosemount Inc B-10
EN SECTION C Model 644 and 244E Manual Supplement Old Transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page C-2 New Transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page C-4 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page C-6 This manual supplement is intended to indicate the primary differences between the old and new Models 644 and 244E.
OLD OLD TRANSMITTER Transmitter Design Models 644R and 244ER 644-01260B01B, 1105E01B, 1101A01A Models 644H and 244EH Two Mounting Holes Sensor Wiring Diagrams 1 2 34 2-wire RTD and 1 2 3 4 1 2 3 4 1 2 3 4 12 3 4 3-wire * RTD with**4-wire T/C and mV Comp. RTD RTD Loop and and * Rosemount Inc. provides 4-wire sensors for all single element RTDs. You can use these RTDs in 3-wire configurations by leaving the unneeded leads disconnected and insulated with electrical tape.
Special Mounting Considerations Mounting a Model 644H to a DIN Rail G-Rail Top Hat Rail 644-5301B01B,D01B 1. Assemble the appropriate rail clip (part number 00644-5301-0001). 2. Attach the transmitter to a rail or panel. 3. Attach the thermowell to the pipe or process container wall and attach sufficient lengths of sensor lead wire. Tighten the connection head cover. 4. Run the sensor lead wires from to the sensor and set the transmitter failure mode switch. 5.
NEW NEW TRANSMITTER Transmitter Design Models 644H and 244EH Models 644R and 244ER 644, 244-1360A02B, 1105E01B, 1101A01A Captive Mounting Screws and Springs Hole in Middle of Transmitter Meter Connector (Model 644H only) Sensor Wiring Diagrams 1 2 3 4 2-wire RTD and 1 2 34 1 2 3 4 1 2 3 4 3-wire* RTD with**4-wire RTD Comp. RTD and Loop and 1 2 3 4 T/C and mV * Rosemount Inc. provides 4-wire sensors for all single element RTDs.
Rosemount Inc EN Special Mounting Considerations 1. Secure the bottom of the mounting screw sleeve with pliers. Remove the mounting screws and springs. 2. Once the springs are removed, use the new transmitter mounting screws to assembly the transmitter to the DIN plate and connection head. (Optional snap rings (part number 00644-4432-0001) are available to ease installation o an existing DIN plate style sensor.
EN Rosemount Inc SPECIFICATIONS Old (1) BASEFFA Power Loop Group II C Zones 0 and 1 Sensor Cable Load New Intrinsically Safe Installation Entity Parameters: Umax:in 30 V dc 30 V dc Imax:in 200 mA 200 mA Wmax:in 1.0 W 1.0 W • T5 (– 40 ≤ Ta ≤ 40 °C) • T4 (– 40 ≤ Ta ≤ 80 °C) 0.67 W • T5 (– 60 ≤ Ta ≤ 40 °C) • T6 (– 40 ≤ Ta ≤ 40 °C) Ceq 13.4 nF Li 0 µH 0 µH Uo 24.2 V dc 13.6 V dc Io 33 mA 80 mA Po 0.2 W • T4 (– 40 ≤ Ta ≤ 80 °C) • T5 (– 60 ≤ Ta ≤ 50 °C) 10 nF 0.
Rosemount Inc EN CSA(2) Intrinsically Safe Installation Connection Parameters: Class I Div. 1 Groups A, B, C, and D T5 (– 50 ≤ Ta ≤ 60 °C) • 30 V or less, 330 ohms or more • 28 V or less, 300 ohms or more • 25 V or less, 200 ohms or more • 22 V or less, 180 ohms or more T6 (– 50 ≤ Ta ≤ 40 °C) T5 (– 50 ≤ Ta ≤ 60 °C) T4 (– 50 ≤ Ta ≤ 80 °C) Class I Div.
EN Rosemount Inc C-8
