Michell Instruments SF72 Operating Manual

SF72 Rail

Dew-Point Transmitter

User’s Manual

97503 Issue 2

April 2017

Please ﬁ ll out the form(s) below for each instrument that has been purchased.

Use this information when contacting Michell Instruments for service purposes.

Transmitter

Code

Serial Number

Invoice Date

Location of Instrument

Tag No

Transmitter

Code

Serial Number

Invoice Date

Location of Instrument

Tag No

Transmitter

Code

Serial Number

Invoice Date

Location of Instrument

Tag No

SF72 Rail Transmitter

For Michell Instruments' contact information please go to

www.michell.com

This document is the property of Michell Instruments Ltd. and may not be copied or

otherwise reproduced, communicated in any way to third parties, nor stored in any Data

Processing System without the express written authorization of Michell Instruments Ltd.

SF72 Rail Transmitter User’s Manual

Contents

Safety ................................................................................................................................vi

Electrical Safety ...........................................................................................................vi

UL Approval .................................................................................................................vi

Pressure Safety ............................................................................................................vi

Toxic Materials .............................................................................................................vi

Repair and Maintenance ...............................................................................................vi

Calibration ...................................................................................................................vi

Safety Conformity ........................................................................................................vi

Abbreviations .....................................................................................................................vii

Warnings ...........................................................................................................................vii

1 INTRODUCTION ................................................................................................1

1.1 Features ............................................................................................................ 1

2 INSTALLATION ..................................................................................................2

2.1 Unpacking the Instrument ................................................................................... 2

2.2 Electrical Connections ......................................................................................... 3

2.2.1 Electrical Boundaries ..................................................................................... 3

2.3 Transmitter Mounting .......................................................................................... 4

2.3.1 Transmitter Mounting - Sample Block (Optional) ............................................. 5

2.3.2 Transmitter Mounting - Direct Pipeline Connection ........................................... 6

3 OPERATION ......................................................................................................7

4 MAINTENANCE ..................................................................................................8

Figures

Figure 1 Transmitter Unpacking Method ....................................................................2

Figure 2 Maximum Load of SF72 Rail - Including Cable Resistance ..............................3

Figure 3 Transmitter Mounting - Sensor Block ............................................................5

Figure 4 Transmitter Mounting - Pipe or Duct.............................................................6

Figure 5 Installation Location ...................................................................................7

Figure 6 Indication of Dead Space ............................................................................7

Figure 7 Replacement of HDPE Guard .......................................................................8

Figure 8 Dimensions ..............................................................................................11

Figure 9 Electrical Connections ............................................................................... 11

iv 97503 Issue 2, March 2017

SF72 Rail Transmitter User’s Manual

Appendices

Appendix A Technical Speciﬁ cations .............................................................................10

A.1 Dimensions .................................................................................11

Appendix B Quality, Recycling & Warranty Information ...................................................13

Appendix C Return Document & Decontamination Declaration ........................................15

Michell Instruments v

SF72 Rail Transmitter User’s Manual

Safety

The manufacturer has designed this equipment to be safe when operated using the procedures detailed in this manual. The user must not use this equipment for any other purpose than that stated. Do not apply values greater than the maximum value stated.

This manual contains operating and safety instructions, which must be followed to ensure the safe operation and to maintain the equipment in a safe condition. The safety instructions are either warnings or cautions issued to protect the user and the equipment from injury or damage. Use competent personnel using good engineering practice for all procedures in this manual.

Electrical Safety

The instrument is designed to be completely safe when used with options and accessories supplied by the manufacturer for use with the instrument.

UL Approval

This product is UL approved within the operating temperature range of -20°C to +60°C. The IP66 rating of this product is outside the scope of UL Approval, but this product has been veriﬁ ed as being IP66 by independent, UKAS accredited, 3rd party listing.

Pressure Safety

DO NOT permit pressures greater than the safe working pressure to be applied to the instrument. The speciﬁ ed safe working pressure is 45 MPa (450 barg / 6526 psig). Refer to the Technical Speciﬁ cations in Appendix A.

Toxic Materials

The use of hazardous materials in the construction of this instrument has been minimized. During normal operation it is not possible for the user to come into contact with any hazardous substance which might be employed in the construction of the instrument. Care should, however, be exercised during maintenance and the disposal of certain parts.

Repair and Maintenance

The instrument must be maintained either by the manufacturer or an accredited service agent. For Michell Instruments’ contact information please go to www.michell.com.

Calibration

The recommended calibration interval for this instrument is 12 months unless it is to be used in a mission-critical application or in a dirty or contaminated environment in which case the calibration interval should be reduced accordingly. The instrument should be returned to the manufacturer, Michell Instruments Ltd., or one of their accredited service agents for re-calibration.

Safety Conformity

This product meets the essential protection requirements of the relevant EU and US standards and directives. Further details of applied standards may be found in the Technical Speciﬁ cations in Appendix A.

vi 97503 Issue 2, March 2017

SF72 Rail Transmitter User’s Manual

Abbreviations

The following abbreviations are used in this manual:

barg pressure unit (=100 kP or 0.987 atm) (bar gauge) °C degrees Celsius °F degrees Fahrenheit DC direct current g grams in inch(es) m micrometer m/sec meters per second mA milliampere max maximum mm millimetres MPa megapascal Nl/min normal liters per minute Nm Newton meter oz ounces psig pounds per square inch RH relative humidity scfh standard cubic feet per hour fps feet per second T temperature V Volts  Ohms ø diameter

Warnings

The following general warning listed below is applicable to this instrument. It is repeated in the text in the appropriate locations.

Where this hazard warning symbol appears in the following

sections it is used to indicate areas where potentially hazardous

operations need to be carried out.

Michell Instruments vii

SF72 Rail Transmitter User’s Manual

viii 97503 Issue 2, March 2017

+ 17 hidden pages