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Rosemount 148 Reference Manual Download Page 8

Reference Manual

00809-0100-4148, Rev BA

July 2010

Rosemount 148

1-2

OVERVIEW

Manual

This manual is designed to assist in the installation, operation, and
maintenance of the Rosemount 148 Temperature Transmitter.

Section 1: Introduction

• Transmitter and Manual Overview
• Things to consider
• How to return the transmitter

Section 2: Installation

• How to mount the transmitter
• How to install the transmitter
• How to set the switches to ensure proper use
• How to wire and power up the transmitter

Section 3: Configuration

• Configuring the transmitter

Section 4: Operation and Maintenance

• Explanation of hardware maintenance

Appendix A: Specifications

• Transmitter and Sensor Specifications
• Dimensional Drawings
• Ordering Information

Appendix B: Product Certifications

• Product Certifications/Hazardous Locations Certifications
• Installation Drawings

Transmitter

Features of the Rosemount 148 include:

• Accepts inputs from a wide variety of RTD and thermocouple sensors
• Electronics that are completely encapsulated in epoxy and enclosed in

a plastic housing, making the transmitter extremely durable and
ensuring long-term reliability.

• A compact size and many housing options allow mounting flexibility in

the field

• Model code option that allows it to be assembled to any sensor,

thermowell, and extension accessory

Refer to the following literature for sensors and thermowells that can be
assembled to the Rosemount 148. They include additional connection heads
that may not be available in the Rosemount 148 model structure.

• Temperature Sensors and Accessories (English) Product Data Sheet

(Document Number 00813-0100-2654)

• Temperature Sensors and Accessories (Metric) Product Data Sheet

(Document Number 00813-0200-2654)

• Rosemount Series 1075 and 1099 High-Temperature Thermocouples

Product Data Sheet (Document Number 00813-0400-2654)

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Summary of Contents for 148

Page 1: ...www rosemount com Reference Manual 00809 0100 4148 Rev BA July 2010 Rosemount 148 Temperature Transmitter ...

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Page 3: ...he 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 re...

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Page 5: ... 2 2 Installation 2 3 Typical European and Asia Pacific Installation 2 3 Typical North and South American Installation 2 4 Set The Switches 2 4 Failure Mode 2 4 Wiring 2 5 Sensor Connections 2 6 Power Supply 2 8 Surges Transients 2 8 Ground the Transmitter 2 8 SECTION 3 Configuration Safety Messages 3 1 Warnings 3 1 Configuration 3 2 Rosemount 148 PC Programmer 3 2 Configuring with the 148 PC Prog...

Page 6: ...l Specifications A 2 Performance Specifications A 3 Dimensional Drawings A 6 Ordering Information A 8 APPENDIX B Product Certifications Hazardous Locations Certifications B 1 North American Certifications B 1 Canadian Standards Association CSA Approvals B 1 European Certifications B 2 Brazilian Certifications B 3 IECEx Certifications B 3 Installation Drawings B 4 ...

Page 7: ... 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 Verify that the operating atmosphere of the transmitter is consistent with the appropriate hazardous locations certificat...

Page 8: ...ations Installation Drawings Transmitter Features of the Rosemount 148 include Accepts inputs from a wide variety of RTD and thermocouple sensors Electronics that are completely encapsulated in epoxy and enclosed in a plastic housing making the transmitter extremely durable and ensuring long term reliability A compact size and many housing options allow mounting flexibility in the field Model code...

Page 9: ...s shielded cable should be used in electrically noisy environments Make wiring connections through the cable entry in the side of the connection head Be sure to provide adequate clearance for cover removal Environmental The transmitter electronics module is permanently sealed within the housing resisting moisture and corrosive damage Verify that the operating atmosphere of the transmitter is consi...

Page 10: ...nal Response Center toll free at 800 654 7768 This center available 24 hours a day can assist with any needed information or materials The center will ask for the following information Product model Serial numbers The last process material to which the product was exposed The center will provide A Return Material Authorization RMA number Instructions and procedures that are necessary to return goo...

Page 11: ...9 0100 4148 Rev BA July 2010 Rosemount 148 1 5 PRODUCT RECYCLING DISPOSAL Recycling of equipment and packaging should be taken into consideration and disposed of in accordance with local and national legislation regulations ...

Page 12: ...Reference Manual 00809 0100 4148 Rev BA July 2010 Rosemount 148 1 6 ...

Page 13: ...lified 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 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 that the operating a...

Page 14: ...mbly using a universal head To a DIN rail using an optional mounting clip Mounting a Rosemount 148 to a DIN Rail To attach a head mount transmitter to a DIN rail assemble the appropriate rail mounting kit Part Number 00248 1601 0001 to the transmitter as shown in Figure 2 2 START HERE Bench Configuration BASIC SETUP Set Sensor Type Set Number of Wires Set Units Set Range Values Set Damping VERIFY ...

Page 15: ...the transmitter see Figure 2 4 on page 2 6 4 Insert the transmitter sensor assembly into the connection head Thread the transmitter mounting screw into the connection head mounting holes Assemble the extension to the connection head Insert the assembly into the thermowell 5 Slip the shielded cable through the cable gland 6 Attach a cable gland into the shielded cable 7 Insert the shielded cable le...

Page 16: ...ersal head Attach the sensor and power leads to the transmitter Avoid contact with other terminals 8 Install and tighten the universal head cover Enclosure covers must be fully engaged to meet explosion proof requirements SET THE SWITCHES Failure Mode As part of normal operation each transmitter continuously monitors its own performance This automatic diagnostics routine is a timed series of check...

Page 17: ...n or installation error occurs the sensor leads and transmitter terminals could carry lethal voltages Use extreme caution when making contact with the leads and terminals NOTE Do not apply high voltage e g AC line voltage to the transmitter terminals since abnormally high voltage can damage the unit Sensor and transmitter power terminals are rated to 42 4 V DC Use extreme caution w hen making cont...

Page 18: ... 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 60 ohms per lead equivalent to 6 000 feet of 20 AWG wire In this case the leads between the RTD and transmitter should be shielded If using only two leads both RTD leads are in series with the sensor element so significant errors can occur if the lead leng...

Page 19: ...Resistance Effect Calculations Given Pt100 4 wire RTD No lead wire resistance effect Pt100 3 wire RTD Lead wire imbalance seen by the transmitter 0 5 Pt100 2 wire RTD Sensor Input Approximate Basic Error 4 wire RTD None independent of lead wire resistance 3 wire RTD 1 0 in reading per ohm of unbalanced lead wire resistance Unbalanced lead wire resistance maximum imbalance between any two leads 2 w...

Page 20: ...or Refer to the Rosemount 470 Transient Protector Product Data Sheet Document Number 00813 0100 4191 for further information Ground the Transmitter The transmitter will operate with the current signal loop either floating or grounded However the extra noise in floating systems affects many types of readout devices If the signal appears noisy or erratic grounding the current signal loop at a single...

Page 21: ...s electrically isolated from surrounding fixtures that may be grounded 3 Ground signal wiring shield at the power supply end Option 2 for ungrounded housing 1 Connect signal wiring shield to the sensor wiring shield 2 Ensure the two shields are tied together and electrically isolated from the transmitter housing 3 Ground shield at the power supply end only 4 Ensure that the sensor shield is electr...

Page 22: ... wiring shield 4 Ground signal wiring shield at the power supply end Grounded Thermocouple Inputs Option 4 1 Ground sensor wiring shield at the sensor 2 Ensure that the sensor wiring and signal wiring shields are electrically isolated from the transmitter housing 3 Do not connect the signal wiring shield to the sensor wiring shield 4 Ground signal wiring shield at the power supply end 4 20 mA loop...

Page 23: ...o not remove the connection head cover in explosive atmospheres when the circuit is live Before connecting a communicator in an explosive atmosphere make sure the instruments in the loop are installed in accordance with instrinsically safe or non incendive field wiring practices When sending or requesting data that would disrupt the loop or change the output of the transmitter set the process appl...

Page 24: ...ds connect the 148 PC Programmer interface to the power communication terminals on the 148 transmitter making sure the polarity is correct Install the 148 PC Program included on compact disc and then start the program The device can be configured from the main screen and will also show the current transmitter status The following pages detail the settings that can be configured on the Rosemount 14...

Page 25: ...ange Limit of the sensor type selected above can also be viewed Damping The Damping value changes the response time of the transmitter to smooth variations in the readings caused by rapid changes in input Determine the appropriate damping setting based on the necessary response time signal stability and other requirements of the loop dynamics of the system The default damping value is 5 0 seconds ...

Page 26: ...ve equation Figure 3 1 Change in Input vs Change in Output with Damping Set to Five Seconds Alarm and Saturation Alarm Direction Low Alarm Level High Alarm Level Low Saturation and High Saturation values can be set here Rosemount and NAMUR standard values can be found on Table A 1 or user configured values may be entered The guidelines are as follows Low Alarm value must be between 3 50 and 3 75 m...

Page 27: ... update the view of the current state of the transmitter Sensor Temperature The sensor temperature readings are displayed in the units set in the Basic Settings Analog Output mA Displays the transmitter output read by the host system in milliamperes Transmitter Temperature Shows the reading used by the onboard RTD to compensate the cold junction of thermocouples Status Indicator Buttons Two button...

Page 28: ...Reference Manual 00809 0100 4148 Rev BA July 2010 Rosemount 148 3 6 ...

Page 29: ...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 When sending or requesting data that would disrupt the loop or change the output of the transmitter set the process application loop...

Page 30: ...Symptom Potential Source Corrective Action High Output Sensor Input Failure or Connection Check for a sensor open or short circuit Check the process variable to see if it is out of range Loop Wiring Check for dirty or defective terminals interconnecting pins or receptacles Power Supply Check the output voltage of the power supply at the transmitter terminals It should be 12 0 to 42 4 V dc over ent...

Page 31: ... Hz Power Supply An external power supply is required The transmitter operates on 12 0 to 42 4 V DC transmitter terminal voltage Humidity Limits 0 95 relative humidity non condensing NAMUR Recommendations The Rosemount 148 meets the following NAMUR recommendations NE 21 Electromagnetic compatibility EMC for Process and Laboratory Apparatus NE 43 Standard of the signal level breakdown information o...

Page 32: ...andard and NAMUR compliant operation are as follows Table A 1 Operation Parameters Certain hardware failures such as microprocessor failures will always drive the output to greater than 23 mA Physical Specifications Communication Connections Communication Terminal Clips permanently fixed to the terminals Materials of Construction Electronics Housing Noryl glass reinforced Universal option codes U ...

Page 33: ...r volt Vibration Effect The Rosemount 148 is tested to the following specifications with no effect on performance Stability For RTD and thermocouple inputs the transmitter will have a stability of 0 15 of reading or 0 15 C whichever is greater for twelve months Code Options Weight 148 Head Mount Transmitter 42 g 1 5 oz U Universal Head 520 g 18 4 oz H Universal Head SST 1700 g 60 oz Susceptibility...

Page 34: ... transmitter at 68 F 20 C from factory C F Fixed of Span Fixed of Span 2 3 4 wire RTDs Pt 100 3 0 00385 3 IEC 751 1995 200 to 850 328 to 1562 0 3 C 0 54 F 0 15 0 009 C 0 016 F 0 006 Pt 100 4 0 003916 4 JIS 1604 1981 200 to 645 328 to 1193 0 3 C 0 54 F 0 15 0 009 C 0 016 F 0 006 Ni 120 5 5 Edison Curve No 7 70 to 300 94 to 572 0 2 C 0 36 F 0 15 0 006 C 0 011 F 0 006 Cu 10 6 6 Edison Copper Winding ...

Page 35: ...ed in locations where the ambient temperature is between 40 and 85 C 40 and 185 F In order to maintain excellent accuracy performance each transmitter is individually characterized over this ambient temperature range at the factory When using a Pt 100 a 0 00385 sensor input with a 0 100 C span at 30 C ambient temperature Temperature Effects 0 009 C x 30 20 0 09 C Total Transmitter Error Worst Case...

Page 36: ...each universal head unless a sensor is ordered assembled to the enclosure However since the head can be integrally mounted to the sensor it may not need to be used Connection Head 2 2 Consult factory for ordering availability BUZ and Polypropylene Heads 2 44 1 7 33 1 3 12 9 0 51 24 5 0 97 95 3 74 96 3 76 112 4 41 SST U Bolt Mounting 2 inch Pipe Approval Label 75 2 93 104 4 09 100 3 93 78 3 07 Appr...

Page 37: ...IN Plate Style Sensor Barstock Thermowell Nipple Union Extension and 1 2 in NPT Spring Loaded Sensor 80 3 2 for Class 900 flanges and larger N Extension Length U Thermowell Immersion Length Dimensions are in millimeters inches SEE SENSOR DOCUMENTATION FOR MORE ASSEMBLY OPTIONS 148 PC Programmer Interface N U 25 1 0 BUZ Connection Head N U 40 1 6 60 2 3 Connection Head U N 60 2 3 Universal Head ...

Page 38: ...A Intrinsic Safety Explosion Proof and Class 1 Division 2 I1 ATEX Intrinsic Safety E1 1 ATEX Flameproof N1 1 ATEX Type n NC ATEX Type n Component ND 1 ATEX Dust Ignition Proof I7 IECEx Intrinsic Safety E7 1 IECEx Flameproof and Dust N7 1 IECEx Type n NG IECEx Type n Component NA No approvals Enclosure Options Material IP Rating Standard Standard A Connection Head Aluminum IP68 U Universal Head Jun...

Page 39: ...n Proof 7 5 mm 11 9 mm G4 Cable Gland Explosion Proof Thin Wire 3 0 mm 8 0 mm Conduit Electrical Connector Standard Standard GE M12 4 pin Male Connector eurofast GM A size Mini 4 pin Male Connector minifast Assemble To Options Standard Standard XA Sensor Specified Separately and Assembled to Transmitter Typical Model Number 148 H N I5 U1 A1 XA 1 Approval Codes E1 N1 N7 ND E5 K5 K6 and E7 require a...

Page 40: ...Reference Manual 00809 0100 4148 Rev BA July 2010 Rosemount 148 A 10 ...

Page 41: ...awing 00148 1065 Temperature Code T5 Tamb 40 to 85 C Combination Certifications K5 Combination of I5 and E5 Canadian Standards Association CSA Approvals I6 CSA Intrinsically Safe and Class I Division 2 Intrinsically Safe for Class I Division 1 Groups A B C and D when installed in accordance with Rosemount drawing 00148 1056 Temperature Codes T5 Tamb 50 to 60 C T6 Tamb 50 to 40 C Suitable for use i...

Page 42: ...be protected from impact and friction when installed E1 ATEX Flame Proof Certificate Number See Certificate ATEX Marking II 2 G 1180 EEx d IIC Temperature Codes T6 40 Tamb 65 C N1 ATEX Type n Certificate Number See Certificate ATEX Marking II 3 EEx nL IIC Temperature Codes T5 40 Tamb 70 C NC ATEX Type n Component Certificate Number See Certificate ATEX Marking II 3G EEx nA IIC Temperature Codes T5...

Page 43: ... BAS 08 0011X Ex ia IIC T5 60 C Tamb 80 C Ex ia IIC T6 60 C Tamb 60 C Special Conditions for Safe Use X The apparatus must be installed in an enclosure which affords it a degree of protection of at least IP20 Non metallic enclosures must have a surface resistance of less than 1GΩ light alloy or zirconium enclosures must be protected from impact and friction when installed N7 IECEx Type n Certifica...

Page 44: ...0148 1055 Rev AA 2 Sheets Factory Mutual Intrinsic Safety and Non Incendive Installation Drawing Rosemount Drawing 00148 1065 Rev AA 1 Sheet Factory Mutual Explosion Proof Installation Drawing Rosemount Drawing 00148 1056 Rev AA 1 Sheet CSA Explosion Proof and Non Incendive Installation Drawing Rosemount Drawing 00148 1057 Rev AA 1 Sheet IECEX Intrinsic Safety Installation Drawing Rosemount Drawin...

Page 45: ...Reference Manual 00809 0100 4148 Rev BA July 2010 B 5 Rosemount 148 Figure B 1 Installation Drawing 148 FM Intrinsic Safety Drawing No 00148 1055 Rev AA 1 of 2 148 ...

Page 46: ...Reference Manual 00809 0100 4148 Rev BA July 2010 Rosemount 148 B 6 Figure B 2 Installation Drawing 148 FM Intrinsic Safety Drawing No 00148 1055 Rev AA 2 of 2 ...

Page 47: ...Reference Manual 00809 0100 4148 Rev BA July 2010 B 7 Rosemount 148 Figure B 3 Factory Mutual Explosion Proof Installation Drawing Drawing No 00148 1065 Rev AA 1 of 1 ...

Page 48: ...Reference Manual 00809 0100 4148 Rev BA July 2010 Rosemount 148 B 8 Figure B 4 CSA Explosion Proof and Non Incendive Installation Drawing Drawing No 00148 1056 Rev AA 1 of 1 ...

Page 49: ...Reference Manual 00809 0100 4148 Rev BA July 2010 B 9 Rosemount 148 Figure B 5 IECEX Intrinsic Safety Installation Drawing Drawing No 00148 1057 Rev AA 1 of 1 ...

Page 50: ...Reference Manual 00809 0100 4148 Rev BA July 2010 Rosemount 148 B 10 Figure B 6 CSA Explosion Proof Installation Drawing Drawing No 00644 1059 Rev AH 1 of 1 ...

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Page 52: ...AGO is a registered trademark of Kontakttechnik GmbH Germany All other marks are the property of their respective owners Standard Terms and Conditions of Sale can be found at www rosemount com terms_of_sale 2010 Rosemount Inc All rights reserved Reference Manual 00809 0100 4148 Rev BA July 2010 Rosemount Temperature GmbH Frankenstrasse 21 63791 Karlstein Germany T 49 6188 992 0 F 49 6188 992 112 E...

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