00809-0100-4263 English Rev.
Product Manual 1 Model 444 Alphaline® Temperature Transmitters NOTICE Read this manual before working with the product. For personal and system safety, and for optimum product performance, make sure you thoroughly understand the contents before installing, using, or maintaining this product. Within the United States, Rosemount Inc. has two toll-free assistance numbers. Customer Central: 1-800-999-9307 (7:00 a.m. to 7:00 p.m. CST) Technical support, quoting, and order-related questions.
Table of Contents SECTION 1 Introduction Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1 SECTION 2 Installation Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1 General Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1 Mechanical Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2 Mounting Stability . . . . . . . . . . . . . .
SECTION 4 Maintenance and Troubleshooting Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Hardware Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Repair . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Disassembly Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Section 1 OVERVIEW Introduction This manual is designed to assist in installing, operating, and maintaining Rosemount® Model 444 Alphaline® Temperature Transmitters. Section 2 Installation provides mechanical, electrical, and environmental considerations to guide you through a safe and effective transmitter installation. Section 3 Calibration provides different Model 444 calibration procedures.
Rosemount Model 444 Alphaline Temperature Transmitters 1-2
Section 2 OVERVIEW Installation This section includes the following transmitter installation information: • General Considerations • Mechanical Considerations Mounting Stability Access Requirements • Electrical Considerations Power Supply Field Wiring Sensor Connections Grounding Multi-Channel Installations Surges/Transients • Environmental Considerations Temperature Environment Moist or Corrosive Environments Hazardous Location Installation Intrinsically Safe Installation • Installation Procedure Mechanic
Rosemount Model 444 Alphaline Temperature Transmitters produce low-level signals proportional to their sensed temperature. Model 444 temperature transmitters convert the low-level sensor signal to a standard 4–20 mA dc signal that is relatively insensitive to lead length and electrical noise. This current signal is then transmitted to the control room via two wires. Figures 2-1, and 2-2 show recommended mounting configurations for transmitter and sensor assemblies.
Installation FIGURE 2-1. Recommended Process Mounting. Union or Coupling Thermowell Hex Sensor Hex Extension Nipple Transmitter Conduit for Field Wiring (dc Power) Extension Length 444-0200C Thermowell 3.2 (81.3) NOTE Dimensions are in inches (millimeters). FIGURE 2-2. Recommended Process Mounting with Drain Seal.
Rosemount Model 444 Alphaline Temperature Transmitters ELECTRICAL CONSIDERATIONS This section contains information that you should consider when preparing to install Model 444 transmitters. Read this section carefully before going on to the installation procedures. Metal conduit should be used to enclose cabling for best results in electrically noisy environments. Power Supply The dc power supply should provide power with less than 2% ripple.
Installation FIGURE 2-4. Field Wiring for the Standard Model 444 Transmitters. { (+) (–) (+) (–) { Meter Connections and Signal Test Points + dc Power – + + – Optional Ground Zero Adjust FIGURE 2-5. Field Wiring for Low-Power Model 444 Transmitters (444LL and LM).
Rosemount Model 444 Alphaline Temperature Transmitters The correct connections for a compensation loop RTD and a 2-wire RTD are shown in Figure 2-6c and Figure 2-6d, respectively. In a 2-wire RTD, however, both leads are in series with the sensor element, so significant errors (0.1 °C) could occur if the lead lengths are greater than one foot. For longer runs when using a 2-wire RTD, attach a third lead and connect as shown in Figure 2-6a. FIGURE 2-6. Sensor Wiring Diagrams.
Installation Thermocouple or Millivolt Inputs In the case of thermocouples, make connections between the sensor and the transmitter with thermocouple wire. For process mounting applications, connect the thermocouple directly to the transmitter. For installations where the transmitter is mounted remotely from the sensor, use appropriate thermocouple extension wire. As with all low-level signal wiring, shielding is recommended for long runs.
Rosemount Model 444 Alphaline Temperature Transmitters Surges/Transients The transmitter will withstand electrical transients of the energy level usually encountered in static discharges or induced switching transients. However, highenergy transients, such as those induced in wiring from nearby lightning strikes, can damage both the transmitter and the sensor. To protect against high-energy transients, install Model 444 transmitters in conjunction with the Rosemount Model 470 Transient Protector.
Installation FIGURE 2-9. Model 444 Transmitter Housing Temperature Rise. 60 (108) Transmitter Housing Temperature Rise vs. E Length for a Test Installation 50 (90) 40 (72) 30 (54) 22 81 5 20 (36) 540 250 10 (18) °C ( °C 482 ° °C ( (10 0 F) 15 00 ° 0 °F F) Ove n Te m pe ) Ove n Te ratu re mperatu re 3044-0123A HOUSING RISE ABOVE AMBIENT °C (°F) Oven Temperatu re 0 3 4 5 3.6 6 7 8 9 E Length in Inches FIGURE 2-10. Sensor Assembly Dimensional Drawings.
Rosemount Model 444 Alphaline Temperature Transmitters Moist or Corrosive Environments The transmitter is designed to resist attack by moisture and other corrosives. The coated circuit boards are mounted in a compartment completely sealed from the conduit entrances. O-ring seals protect the interior when the covers are installed. In humid environments, however, it is still possible for moisture “breathing” to occur in conduit lines.
Installation INSTALLATION PROCEDURE Installation consists of mounting the transmitter and sensor assembly and making electrical connections. If mounting the transmitter directly to the sensor assembly, use the process mounting technique shown in Figure 2-1 or Figure 2-2, on page 2-3. For transmitter locations remote from the sensor, use conduit between the sensor and transmitter. Transmitter hubs will accept male conduit fittings with ½–14 NPT; ½–14 NPSM; or ½–14 taper thread per ANSIC 80.4.
Rosemount Model 444 Alphaline Temperature Transmitters Preliminary Checkout 1. For any Model 444 unit, first verify that the transmitter is calibrated to the required range. Calibration is usually performed by substituting an input in place of the sensor, and this is most conveniently accomplished prior to sensor connection. Refer to the calibration procedures in Section 4 Maintenance and Troubleshooting. Input Connections 2.
Installation FIGURE 2-11. Model 444 with Optional Mounting Bracket. PANEL OR SURFACE MOUNTING PIPESTAND MOUNTING Transmitter can be Rotated 90° 5/16 -inch Bolts (four required, not furnished) Hole for /16 -inch Bolts (four places) 5 2.81 (81) Mounting Bracket Clearance Hole for ¼-inch Bolt (eight places) 444-1151G, 1151F04A ¼–20 3½-inch Bolt (4) 5 /16 –18 U-bolt for 2-inch Pipe (2) 5.00 (127) NOTE Dimensions are in inches (millimeters). FIGURE 2-12. Model 444 Dimensional Drawings 0.
Rosemount Model 444 Alphaline Temperature Transmitters 2-14
Section 3 OVERVIEW Calibration Each transmitter is factory calibrated to the temperature range shown on the nameplate. If calibration to a specific range is not specified on the purchase order, the transmitter is calibrated to maximum span with a base temperature of 0 °C, and the “Calibration” entry on the transmitter nameplate is left blank. For more specific calibration information and a complete breakdown of transmitter parts, refer to Section 5 Specifications and Reference Data.
Rosemount Model 444 Alphaline Temperature Transmitters CALIBRATING A RTD TRANSMITTER Calibration Equipment Required: Readout Resistor. The transmitter test terminals give a 40–200 mV signal. The Models 444RL and444RL ___B0912 have a jumper-selectable 4–20 mA test output option (2-board sets). If this is not suitable for the test equipment available, a ±0.1% tolerance, 0.5 W precision wirewound resistor is needed. Suggested values include a 100-ohm resistor to give a 0.
Calibration 6. Determine the RTD resistance at the desired base and full scale temperatures. For Calibration Code 1 (see Table 5-3, on page 5-9), these resistances are listed in Table B-1. 7. Turn the power on. 8. Set the decade box to the resistance corresponding to the desired base temperature. Adjust the zero potentiometer until the output is 4 mA. Remember that recovery time of the unit from an underscale condition is longer than from an over-scale condition.
Rosemount Model 444 Alphaline Temperature Transmitters FIGURE 3-1. Location of Test Input and Burnout Protection Jumper on Model 444RL Range Board. 444-0002ACCA Test Output Jumper Position Burnout Protection Jumper Position FIGURE 3-2. RTD Transmitter Calibration Diagram.
Calibration CALIBRATING A THERMOCOUPLE TRANSMITTER Using a Compensated Thermocouple Simulator Calibration Equipment Required Compensated Thermocouple Simulator. Precision voltage source providing conformity to NIST Monograph 125 thermocouple curves. Reflect accuracy of simulator to desired calibration span. A simulator accuracy four times better than the transmitter is recommended (0.05% of calibrated span or 0.005mV whichever is greater).
Rosemount Model 444 Alphaline Temperature Transmitters TABLE 3-2. Coarse Zero Jumper Location, Model 444TJ, TK, TF, TT, and MV Range Code 1. Transmitter Base Region °C °F mV –50 to 50 50 to 100 –58 to 122 122 to 302 -2 to 3 3 to 8 Coarse Zero Jumper Location Z1 Z2 NOTE Range Codes 2 and 3 are continuously adjustable over the range shown in Table 1. (No Coarse Zero Jumper) FIGURE 3-3. Location of Burnout Protection Jumper on Model 444T Range Board. FIGURE 3-4.
Calibration Using an Ice Bath Calibration Equipment Required Millivolt Source. Precision voltage source providing outputs from –10 to 100 mV. Reflect accuracy of four times better that the 444 transmitter is recommended (0.05% of calibrated span or 0.005 mV which ever is greater). Voltmeter. Such as a 5-digit DVM. Accuracy is ±0.01%; resolution is 1 mV. dc Power Supply. Power capability is 24 V dc at 35 mA. Thermocouple Wire.Use the same type as that used in the construction of the thermocouple.
Rosemount Model 444 Alphaline Temperature Transmitters FIGURE 3-5. Ice Bath Calibration Diagram. Input Monitor DVM + – DVM + – Thermocouple Wire + Power Supply Millivolt Source – + + – – – + DVM Ice Bath CALIBRATING A LOW-POWER TRANSMITTER Calibration Equipment Required Voltmeter. Such as a 5-digit DVM. Accuracy is ±0.01%; resolution is 1 mV. dc Power Supply. Power capability is 5 V dc at 1.5 mA for Model 444LL and 8 V dc at 2 mA for Model 444LM. Resistance Decade Box.
Calibration Calibration Procedure The following steps describe the procedure for calibrating a low-power transmitter, as shown in Figure 3-6: 1. Remove the cover from the terminal side of the transmitter housing. 2. If an RTD is already connected, remove all RTD lead connections. 3. Attach the calibration test equipment as shown in Figure 3-6. Make terminal connections using miniature banana plugs. Use simulated lead resistors only if necessitated by long lead wire lengths, as discussed above.
Rosemount Model 444 Alphaline Temperature Transmitters CALIBRATING A MILLIVOLT TRANSMITTER 3-10 Calibration is identical to the thermocouple type (see Figure 3-5 on page 3-8), except that a reference junction and ice bath are not used. The millivolt source is connected directly to the transmitter input terminals with copper wire, and the desired millivolt levels are entered directly. See Table 3-2 for Coarse Zero Jumper locations.
Section 4 OVERVIEW Maintenance and Troubleshooting This section contains the following transmitter maintenance and troubleshooting information: Hardware Diagnostics • Troubleshooting • Repair Disassembly Procedure Reassembly Procedure Interchangeability of Parts Burnout Protection Adjustments • Repair and Warranty Service • Return of Materials Use only the procedures and new parts specifically referenced in this manual.
Rosemount Model 444 Alphaline Temperature Transmitters TABLE 4-1. Transmitter Troubleshooting Symptoms and Corrective Actions. Symptom High Output Erratic Output Low Output or No Output Excessive Current (over 30 mA) Potential Source Corrective Action Sensor Check for a sensor or thermocouple open circuit. (RL, MV, T-Series with upscale burnout protection only) Loop Wiring Check for dirty or defective terminals, interconnecting pins, or receptacles.
Maintenance and Troubleshooting REPAIR Exposure to hazardous substances can cause death or serious injury. If a hazardous substance is identified, a Material Safety Data Sheet (MSDS), required by law to be available to people exposed to specific hazardous substances, must be included with the returned materials.
Rosemount Model 444 Alphaline Temperature Transmitters Disassembly Procedure Explosion can cause death or serious injury. Do not remove the instrument cover in explosive atmospheres when the circuit is alive. High voltage that may be present on leads can cause electrical shock. Make sure all power to the transmitter is off before wiring. NOTE The numbers in parentheses refer to parts shown in the Illustrated Parts List, Table 5-7, in Section 5 Specifications and Reference Data. 1.
Maintenance and Troubleshooting Reassembly Procedure Explosions can cause death or serious injury. Both transmitter covers must be fully engaged to meet explosionproof requirements. 1. Inspect all O-rings (1D,3) and replace if necessary. Lightly grease new Orings with silicone grease to guarantee an adequate seal. 2. If the O-ring Retainer Plate (1B) has been removed, be sure the correct side is facing outward.
Rosemount Model 444 Alphaline Temperature Transmitters Mechanical Parts • All mechanical hardware is interchangeable among units without regard to model numbers. • Nameplates are interchangeable only among units that share the same input types (i.e. RTD, Thermocouple, or Millivolt). Electrical Parts • Amplifier Board: Interchangeable among Models 444T and 444M. • Output Board: 444T series (TE, TJ, TK, TT, TR, TS) and 444MV share a common output board.
Section 5 FUNCTIONAL SPECIFICATIONS Specifications and Reference Data Inputs Models 444RL, LL, and LM 100 V R0 platinum RTD per IEC 751. Model 444T Thermocouple types E,J,K,T,R, and S per NIST (grounded or ungrounded). Model 444MV Millivolt input (grounded or ungrounded) source impedance less than 100 V. R-numbers, specials Special inputs other than standards, consult factory. Spans RTD Platinum 45 to 135 °F (25 to75 °C). 125 to 380 °F (70 to 210 °C). 360 to 1080 °F (200 to 600 °C).
Rosemount Model 444 Alphaline Temperature Transmitters Output Limits (approximate) Models 444RL, T, MV Low: 3.9 mA dc. High: 30.0 mA dc. Model 444LL Low: 0.1 V dc. High: 4.2 V dc. Model 444LM Low: 0.125 V dc. High: 6.2 V dc. Power Supply Models 444RL, T, and MV 12 to 45 V dc at terminals of transmitter. Model 444LL 5 to 12 V dc (overvoltage protected to 24 V dc) max current = 1.5 mA. Model 444LM 8 to 12 V dc (overvoltage protected to 24 V dc) max current = 2.0 mA.
Specifications and Reference Data PERFORMANCE SPECIFICATIONS Accuracy ±0.2% of calibrated span (or, for thermocouple and millivolt inputs, ±0.02 millivolts, whichever is greater). ±0.5% for copper, nickel, and isolated RTD inputs, 0.1% for differential RTD inputs. Includes combined effects of transmitter repeatability, hysteresis, linearity (conformity instead of linearity for thermocouple input), and adjustment resolution. Does not include sensor error. Stability ±0.2% of calibrated span for six months.
Rosemount Model 444 Alphaline Temperature Transmitters PHYSICAL SPECIFICATIONS Materials of Construction Electronics Housing Low-copper aluminum. (NEMA 4X). IP 54, IP 65, IP 66. Housing Paint Polyurethane. Housing O-rings Buna-N. Sensor and Conduit Connections 1/2-inch conduit on electronics housing. Screw terminals and integral test jacks compatible with miniature banana plugs (Pomona 2944, 3690 or equal). Weight Transmitter: 3 lb (1.4 kg). Transmitter with mounting bracket: 4 lb (1.8 kg).
Specifications and Reference Data TABLE 5-2. CSA Parametric Parameters.
Rosemount Model 444 Alphaline Temperature Transmitters Centro Elettrotecnico Sperimentale Italiano (CESI/CENELEC) Certifications E8 Flameproof: EEx d IIC T6 I8 Intrinsic Safety: Model 444RL EEx ia IIC T6 (Tamb = 40 °C) [Pi = 0.75 W] EEx ia IIC T5 (Tamb = 55 °C) [Pi = 1.0 W] EEx ia IIC T4 (Tamb = 80 °C) [Pi = 1.0 W] Model 444T_ & MV EEx ib IIB T6 (Tamb = 40 °C) [Pi = 0.75 W] EEx ib IIB T5 (Tamb = 55 °C) [Pi = 1.0 W] EEx ib IIB T4 (Tamb = 80 °C) [Pi = 1.0 W] Entity Parameters: Vi = 30 V dc Ii = 200 mA Pi = 0.
Specifications and Reference Data LCD METER SPECIFICATIONS (OPTIONS D AND E) Functional Specifications Configuration 4 mA point limits: –999 to 1000. Span limits: 0200 to 9999. The sum of the 4 mA point and span must not exceed 9999. Adjustments are made using non-interactive zero and span buttons. Temperature Limits Storage: –40 to 85 °C (–40 to 185 °F). Operating: –20 to 70 °C (–4 to 158 °F). Between –40 to –20 °C (–40 to –4 °F) loop is intact and the meter is not damaged.
Rosemount Model 444 Alphaline Temperature Transmitters ANALOG METER SPECIFICATIONS (OPTIONS B AND C) Functional Specifications Meter Indication 0 to 100% linear scale. Special optional ranges. Temperature Limits –40 to 65 °C (–40 to 150 °F). Humidity Limits 0 to 100% relative humidity. Zero Adjustment Adjustment screw on face of meter. Performance Specifications Indication Accuracy ±2% of calibrated span. Temperature Effect Less than 2% of full scale at any point within the temperature limits.
Specifications and Reference Data TABLE 5-3. 444 Model Structure.
Rosemount Model 444 Alphaline Temperature Transmitters TABLE 5-4. 444RL Fast Turn-on Model Structure.
Specifications and Reference Data TABLE 5-5. 444LL, LM Model Structure.
Rosemount Model 444 Alphaline Temperature Transmitters TABLE 5-7. Standard Parts List.
Specifications and Reference Data TABLE 5-8. Parts List for Model W444 Transmitter (CESI/CENELEC Approval). Item Number Part No.
Rosemount Model 444 Alphaline Temperature Transmitters TABLE 5-9. Parts List for Model T444 Transmitter (BASEEFA Approval). Item Number 1 2 j 3 j 1 D j 4 j 5 j 6 j j 7A Part No.
Specifications and Reference Data TABLE 5-10. Parts List for Model 444 RL Fast Turn On Transmitter (RTD Input). Item Number 1 2 j 3 j 1D j 4 j 5 j j 7A Part No.
Rosemount Model 444 Alphaline Temperature Transmitters TABLE 5-12. Parts List for Model 444 Increased Accuracy or Special Range Transmitters. Item Number 1 2 j 3 j 1 D j 4 j 5 j 6 j j 7A Part No.
Specifications and Reference Data FIGURE 5-1. Transmitter Exploded View 1. View Corresponds to the Following Models: 2 j 444RL1 444RL2 444RL3 3 j 4 j 444LM1 444LL1 5 j j 7A 8 j 9 j j 1A j 7B 1D 1B j j 1F j 1C j 3 j 2 j 1E j 10E 10F 10D 10A 10B 444-1151C02A, 0071A01A, 0071B01A, 1151H02A 10C Detail of Item 1B.
Rosemount Model 444 Alphaline Temperature Transmitters FIGURE 5-2. Transmitter Exploded View 2. View Corresponds to the Following Models: j 2 444RL9 444TJ1 444TJ2 444TK1 444TK2 3 j 4 j 5 j 444TK3 444TE1 444TE2 444TT1 444T_9 444TR1 444TS1 444MV1 444MV2 444MV9 6 j j 7A 8 j 9 j 1A j j 7B 1D j 1F j 1B j 1C j 3 j 2 j 1E j 10E 10F 10D 10A 10B 10C 3044-0X68C01A, 444-1151B02A, 0236D01A Detail of Remote Cold Junction Compensation Sensor.
Section 6 Options The mounting bracket option provides auxiliary configurations for mounting the Model 444 transmitter. With this option you can either mount the transmitter to a 2-inch pipe or a suitable flat panel. The bracket is constructed of carbon steel with carbon steel U-bolts. See Figure 6-1 for an exploded view of the Model 444 with a mounting bracket in both configurations. MOUNTING BRACKET FIGURE 6-1. Model 444 with Optional Mounting Bracket.
Rosemount Model 444 Alphaline Temperature Transmitters LCD / ANALOG METER The LCD and analog meters provide local indication of the transmitter output. Both meters attach easily to the terminal side of the transmitter. LCD METER The Rosemount® LCD meter plugs directly into the Model 444 to provide a highly accurate digital display of the process variable. The meter adds no voltage drop in the 4–20 mA current loop when connected directly across the transmitter test terminals.
Options Position the Decimal Point and Select the Meter Function 2. Press the left and right configuration buttons simultaneously and release them immediately. 3. To move the decimal point to the desired location, press the left configuration button. Note that the decimal point wraps around. 4. To scroll through the mode options, press the right configuration button repeatedly until the desired mode is displayed. See Table 6-1. TABLE 6-1. LCD Meter Modes.
Rosemount Model 444 Alphaline Temperature Transmitters LCD Meter Assembly Figure 6-3 shows the mounting hardware required to properly install the LCD meter on a Model 444 transmitter. This mounting hardware may also be used with the Rosemount universal (analog) meter. FIGURE 6-3.
Options Overload Limitation 666 mA. Temperature Limits Storage: –40 to 85 °C (–40 to 185 °F). Operating: –20 to 70 °C (–4 to 158 °F). Between temperatures –40 to –20 °C (–40 to –4 °F), the loop is intact and the meter is not damaged. Humidity Limitation 0 to 95% non-condensing relative humidity. Update Period 750 ms. Response Time Responds to changes in input within a maximum of two update periods. If the filter is activated, then the display responds to the change within nine update periods.
Rosemount Model 444 Alphaline Temperature Transmitters ANALOG METER The analog meter plugs directly into the Model 444 to provide an accurate local indication of user-specified units. It requires an analog 4–20 mA dc, 10–50 mA dc, or 40–200 mV dc transmitter output from a two-wire transmitter, and adds no voltage drop in the 4–20 mA current loop when connected directly across the transmitter test terminals.
Appendix A Hazardous Locations Certifications Drawings Rosemount Drawing 00444-0261, 2 Sheets: Model 444 Explosion-proof Installation Drawing, Factory Mutual. Rosemount Drawing 01151-0214, 6 Sheets: Index of Intrinsically Safe Barrier Systems and Entity parameters for 444, 1135, 1144, 1151, and 2051 Transmitters and 751 Field Indicators. Rosemount Drawing 00444-0034, 2 Sheets: CSA Intrinsic Safety Approvals for Model 444.
Rosemount Model 444 Alphaline Temperature Transmitters A-2
Appendix A A-3
Rosemount Model 444 Alphaline Temperature Transmitters A-4
Appendix A A-5
Rosemount Model 444 Alphaline Temperature Transmitters A-6
Appendix B Temperature Sensor Reference Information TABLE B-1. Resistance Versus Temperature Curve Ro=100.00 Ω, a=0.00385 Reference Standard IEC 751. °C 0 –10 –20 –30 °C –40 –50 –60 –70 –80 –90 –200 –100 0 18.49 60.25 100 56.19 96.09 52.11 92.16 48.00 88.22 43.87 84.27 39.71 80.31 35.53 76.33 31.32 72.33 27.08 68.33 22.80 64.30 °C 0 10 20 30 40 50 60 70 80 90 0 100 200 300 400 500 600 700 800 100 138.50 175.84 212.02 247.04 280.90 313.59 345.13 375.51 103.90 142.29 179.
Rosemount Model 244P Head and Rail Mount Temperature Transmitters B-2
Index A H M Accuracy 5-3 Ambient Temperature Effect 5-3 Analog Meter Specifications 5-8 Hazardous Location Certifications 5-4 Hazardous Location Installation 2-10 Humidity Limitation 5-7 Maintenance 3-1, 4-1 Burnout Protection Adjustments 4-6 Disassembly Procedure 4-4 Interchangeability of Parts 4-6 Reassembly Procedure 4-5 Repair 4-3 Warranty Service 4-7 Materials of Construction 5-4 Mechanical Installation 2-11 Millivolt Transmitter 3-10 Moist or Corrosive Atmospheres 2-10 Mounting 2-2 Mounting Brack
Rosemount Model 444 Alphaline Temperature Transmitters S T Sensor and Conduit Connections 5-4 Sensor Connections Grounding 2-7 RTD Inputs 2-5 2-Wire RTD 2-6 3-Wire RTD 2-6 4-Wire RTD 2-6 Compensation Loop RTD 2-6 Differential Millivolt 2-6 Differential RTD 2-5 Thermocouple or Millivolt Inputs 2-7 Span and Zero 5-2 Spans 5-1 Spare Parts, List of 5-12–5-16 Specifications and Reference Data 5-1 Analog Meter Specifications 5-8 LCD Meter Specifications 5-7 Configuration 5-7 Digital Display Resolution 5-7 Humi
Index I-3
Fisher-Rosemount Heath Place Bognor Regis West Sussex PO22 9SH England Tel 44 (1243) 863 121 Fax 44 (1243) 867 5541 Singapore Pte Ltd. 1 Pandan Crescent Singapore 128461 Tel (65) 777-8211 Fax (65) 777-0947 Tlx RS 61117 FRSPL PR Fisher-Rosemount Limited 8200 Market Boulevard Chanhassen, MN 55317 USA Tel 1-800-999-9307 Telex 4310012 Fax (612) 949-7001 INT IN U. S. A. © 1998 Rosemount Inc. ED Rosemount Inc. http://www.rosemount.com ¢00809-0100-4263z¤ 00809-0100-4263, Rev.
