Fisher 444 Alphaline - page 40

Rosemount Model 444 Alphaline Temperature Transmitters

5-2

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.

Load Limits

Models 444RL, T, and MV

4–20 mA.

Span and Zero

Continuously adjustable, as defined in the ordering table. Adjustments are

accessible from the terminal side of the transmitter housing.

TransmitterTemperature Limits

–13 to 185 °F (–25 °C to 85 °C), transmitter operates within specifications.

–40 to 212 °F (–40 °C to 100 °C), transmitter operates without damage.

–58 to 248 °F (–50 °C to 120 °C), storage.

–13 to 149 °F (–25 °C to 65 °C), transmitter operates within specificatio ns for

meter option.

Loss of Input

Upscale burnout indication standard for RTD inputs, downscale burnout

indication optional. Upscale burnout indication standard for thermocouple and

millivolt inputs; downscale burnout indication or no indication optional.

Turn -on Ti me

2 seconds. No warm-up required.

Load (Ohms)

Operating

Region

1650

1500

1000

500

0

4–20 mA dc

12 20 30 40

PowerSupply (V dc)

Maximum Load = 50 3(Supply Voltage– 12)

Volta ge

Too Lo w

Contents

Main Page Product Manual 7:00 a.m. to 7:00 p.m. CST) 24 hours a day IncludesCanada) NOTICE 1 Model 444 Alphaline Temperature Transmitters Page Table of Contents SECTION 1 Introduction SECTION 2 SECTION 3 Calibration Page 1Introduction OVERVIEW Page 2Installation OVERVIEW GENERAL MECHANICAL Mounting Stability Access Requirements 2-3 FIGURE2-1. Recommended Process Mounting. FIGURE2-2. Recommended Process Mountingwith Drain Seal. ELECTRICAL Power Supply Field Wiring 2-5 FIGURE 2-4. Field Wiring for the Standard Model 444 Transmitters. { FIGURE 2-5. Field Wiring for Low-Power Model 444 Transmitters (444LL and LM). Sensor Connections 2-6 FIGURE 2-7. Characteristicsof Thermocouple and RTD Input Wires. FIGURE 2-6.Sensor Wiring Diagrams. Grounding Multi-Channel Installations Surges/Transients ENVIRONMENTAL Temp era tur e Environment 2-9 FIGURE 2-9. Model444 Transmitter Housing TemperatureRise. FIGURE 2-10.Sensor AssemblyDimensional Drawings. Moist or Corrosive Environments HazardousLocation Intrinsically Safe PROCEDURE Mechanical Electrical Page 2-13 FIGURE 2-11.Model 444 with Optional Mounting Bracket. FIGURE 2-12.Model 444 Dimensional Drawings PIPESTAND MOUNTING PANEL OR SURFACE MOUNTING Page 3Calibration OVERVIEW SAFETY MESSAGES RTD TRANSMITTER Page 3-4 THERMOCOUPLE TRANSMITTER Using a Compensated Thermocouple Simulator + 3-6 U s i n ga nI c e B a t h LOW-POWER TRANSMITTER Page Page 4Maintenance and Troubleshooting OVERVIEW HARDWARE DIAGNOSTICS TROUBLESHOOTING 4-2 TABLE4-1. Transmitter TroubleshootingSymptoms andCorrectiveActions. Symptom PotentialSource CorrectiveAction REPAIR Disassembly Procedure Reassembly Procedure Interchangeability of Parts Burnout Protection Adjustments REPAIR AND WARRANTY SERVICE RETURN OF MATERIALS 5Specifications and Reference Data FUNCTIONAL Page PERFORMANCE PHYSICAL Page Page LCD METER (OPTIONS D AND E) Functional Specifications Performance Specifications Physical Specification Page 5-9 TABLE5-3. 444 Model Structure. TypicalModel Number: 0444 RL3 U 1 A 2 E5 Q4 Model Product Description Code Input Type(1) 5-10 TABLE5-4. 444RL Fast Turn-on Model Structure. 5-11 TABLE5-5. 444LL, LM Model Structure. TABLE5-6. Meter Kits. Model ProductDescription Code Input Type j 5-13 TABLE5-8. Parts List forModel W444 Transmitter (CESI/CENELEC Approval). j 5-14 TABLE5-9. Parts List forModel T444 Transmitter (BASEEFAApproval). 5-15 TABLE5-10. Parts List for Model 444 RL Fast Turn On Transmitter(RTD Input). TABLE5-11. Parts List for Model 444 LL, 444 LM Low PowerTransmitter (RTD Input). j 5-16 TABLE5-12. Parts List for Model 444 Increased Accuracy or Special Range Transmitters. Code D Not used on transmitters,but recommended for repair activities. Page Page 6Options MOUNTING BRACKET LCD / ANALOG METER LCD METER Configuration Page LCD Meter Assembly LCD Meter Page ANALOG METER } Analog Meter Page Page Page Page Page Page Appendix B-1 BTemperature Sensor Reference Information TABLEB-1. Resistance VersusTemperature Curve Ro=100.00,a=0.00385 Reference Standard IEC 751. Page I-1 Index A B C D S T U V W Page Page Rosemount Inc. http://www.rosemount.com Fisher-Rosemount Limited Fisher-Rosemount 00809-0100-4263z 00809-0100-4263, Rev. AA