Manual De UsuarioTabla de contenidosAnalog Mode01.0 INTRODUCTION11.1 SECTION CONTENTS11.2 PRODUCT DESCRIPTION11.3 CONFIGURATION11.4 PRODUCT SUPPORT11-1 Basic Model 34411-2 Terminal Connections1Transmitter Quantity12.0 XTC COMMUNICATOR22.1 DISPLAY22.2 KEYPAD DESCRIPTION22.2.1 Dedicated Keys22.2.2 Function Keys22.3 LOOP CONNECTION22.4 POWER22.5 MXC SOFTWARE VERSION22.6 MXC MENU SCREENS AND PARAMETER MAP22-1 Moore XTC Communicator (MXC)22-2 Major MXC Menu Screens22-3 Parameter Map, MXC/Model 34423.0 INITIAL TRANSMITTER SET-UP33.1 COMMISSIONING TRANSMITTER ON THE BENCH OR IN THE FIELD33.1.1 Test Equipment Needed33.2 ESTABLISHING COMMUNICATION33.3 TESTING THE TRANSMITTER, MXC, AND THE LOOP33.3.1 MXC Testing33.3.2 Transmitter Testing33.3.3 Loop Testing33.4 REVIEW CONFIGURATION DATA33.5 CHECKING TRANSMITTER OUTPUT33-1 Bench Test Connections33-2 Typical Field Test Connections34.0 INSTALLATION44.1 EQUIPMENT DELIVERY AND HANDLING44.1.1 Factory Shipment44.1.2 Receipt of Shipment44.1.3 Storage44.2 ENVIRONMENTAL CONSIDERATIONS44.3 INSTALLATION CONSIDERATIONS44.3.1 Mechanical44.3.2 Electrical44.3.3 Transmitter Operating Mode and Network Type44.3.3.1 Analog Mode44.3.3.2 Digital Mode44.3.4 Power Supply Requirements44.3.4.1 Point-To-Point Network44.3.4.2 Multi-Drop Network44.3.5 Cable Capacitance and Maximum Length44.3.5.1 Cable Capacitance44.3.5.2 Maximum Cable Length Calculation44.3.6 Network Junctions44.3.7 Safety Barriers44.3.8 Connection of Miscellaneous Hardware44.3.10 2-Wire RTD Accuracy Limitations44.3.11 Shielding and Grounding44.4 MECHANICAL INSTALLATION44.4.1 Pipe Mounting44.4.2 Flat Surface Mounting44.4.3 Direct Mounting to Process44.4.4 Local Digital Display Installation, Repositioning and Removal44.4.5 Electrical Conduit and Cable Installation44.4.5.1 Conduit44.4.5.2 Cables44.4.5.3 Access to Transmitter Terminal Compartment44.5 ELECTRICAL INSTALLATION44.6 HAZARDOUS AREA INSTALLATION44-1 Point-To-Point Network (Analog Mode)44-2 Model 352 SLDC and Model 344 Connections (Analog Mode)44-3 Multi-Drop Network (Digital Mode)44-4 Supply Voltage versus Network Resistance44-5 Dimensions, Mounting Bracket for Model 34444-6 Model 344 Mounting Configurations with Supplied Bracket44-7 Transmitter -To-Process Mounting44-8 Sensor Assembly44-9 Digital Meter Orientation and Mounting Hardware44-10 Digital Meter Repositioning and Removal44-11 Conduit Drain and Explosion Proof Installations44-12 Signal (Loop), Sensor, MXC and Test Terminals44-13 Model 344 Sensor Wiring45-1 Model 344 Digital Meter44.1 Operating Mode and Network Type44.2 Thermocouple and Extension Grade Wire Characteristics45.0 ON-LINE AND OFF-LINE OPERATION55.1 ON-LINE OPERATION55.1.1 Using the MXC for Configuration55.1.1.1 Sensor Input Block55.1.1.2 Operator Display Block55.1.1.3 Transmitter ID Block55.1.1.4 Output Block55.1.1.5 Alarm Block55.1.1.6 Setpoint Track and Hold Block55.1.1.7 A/M Transfer Block55.1.1.8 Controller Block55.1.1.9 End or Review Configuration55.1.2 Downloading A Configuration55.1.3 Local Transmitter Operation55.1.3.1 Display Functions55.1.3.2 Local Pushbutton Input Ranging55.1.3.3 Local Pushbutton Damping Adjustment55.1.3.4 Local Pushbutton AUTO/MANUAL, SETPOINT and VALVE Adjustments55.1.4 Quick Access Key Operation55.2 OFF-LINE OPERATION55.2.1 Using Off-Line Operations to Access an Archive55.2.2 Using an Archive in On-Line Memory55.1 Output Display Code Choices56.0 CALIBRATION AND MAINTENANCE66.1 CALIBRATION66.1.1 Equipment Required66.1.2 Transmitter Analog Output Calibration66.1.2.1 Transmitter Normally Configured for Analog Mode66.1.2.2 Transmitter Normally Configured for Digital Mode66.1.3 RTD/OHM Type Input Calibration66.1.3.1 RTD/OHM Calibration Check66.1.3.2 Current Source Calibration66.1.4 Thermocouple/Millivolt Type Input Calibration66.1.4.1 Thermocouple/Millivolt Calibration Check66.1.4.2 Narrow/Wide Millivolt Calibration6PREVENTIVE MAINTENANCE66.2.1 Tool and Equipment Requirements66.2.2 Transmitter Exterior Inspection66.2.3 Transmitter Exterior Cleaning66.2.4 Transmitter Enclosure Interior Inspection66.2.5 Transmitter Calibration6TROUBLESHOOTING66.3.1 Preliminary Troubleshooting66.3.2 Troubleshooting66.3.2.1 Diagnostic Messages66.3.2.2 Possible Transmitter Output Problems66.3.3 Diagnosing a Defective Digital (LCD) Meter66.3.4 Enclosure Thread Lubrication6NON-FIELD-REPLACEABLE ITEMS6ASSEMBLY REMOVAL AND REPLACEMENT66.5.1 Electronics Module Removal and Replacement6MAINTENANCE RECORDS6RECOMMENDED SPARE AND REPLACEMENT PARTS6SOFTWARE COMPATIBILITY6RETURN SHIPMENT6Bench Calibration Connections6Field Calibration Connections6RTD/Ohm Current Source Calibration Set Up6TC/mV Input Accuracy Check and Calibration Set Up6Self-Diagnostics Troubleshooting6Message - No Transmitter Found6Message - Communication Error6Message - Field Device Malfunction6Symptom - Zero or Low Output6Symptom - High Output6Symptom - Output Current Fixed Below Scale at Approximately 3.84 mA6Symptom - Output Current Fixed Above Scale at Approximately 21.8 mA6Symptom - Erratic Output67.0 CIRCUIT DESCRIPTION77.1 ELECTRONICS ASSEMBLY77.2 THEORY OF OPERATION77.2.1 Thermocouple/Millivolt Input77.2.2 RTD/OHMS Input77.2.3 Signal Conversion77.2.4 Communication Format77-1 Model 344 Electronics Module Block Diagram78.0 MODEL DESIGNATION AND SPECIFICATIONS88.1 MODEL DESIGNATION88.2 ACCESSORIES88.3 SPECIFICATIONS88.3.1 Mechanical88.3.2 Functional and Performance88.3.3 Two-Wire Cable88.3.4 Sensor Inputs88.3.5 Environmental88.3.6 Hazardous Area Classification88.3.6.1 CSA Hazardous Locations Precautions88-1 Typical TC and RTD Thermowell Assemblies without Heads88-2 Typical TC or RTD Thermowell Assembly with a Head88-3 Model 344 Dimensions8Model 344T Model Designation8General Accessories8Thermal Sensors8Replacement Thermocouples and RTDs for 344T Temperature Elements8Thermocouple Wire8Sensors: Type, Range, Span, and Accuracy89.0 GLOSSARY9Tamaño: 900 KBPáginas: 183Language: EnglishManuales abiertas