Michell Instruments Pura 2-Wire, User Manual

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Pura 2-Wire/3-Wire/Digital Transmitter
User’s Manual
vi 97070 Issue 12.1, March 2016
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 (2-wire version ONLY)
This product (2-wire version only) 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 veri fi 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 speci fi ed safe working pressure is 24 MPa (240 barg / 3480 psig). Refer to Appendix A,
Technical Speci fi cations.
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
Periodic re-calibration is recommended in order to maintain the highest quality of measurement in
your application. Michell Instruments recommends that you have your Pura transmitter re-calibrated
annually unless it is used in a mission-critical application or in a contaminated environment, in which
case the calibration interval should be reduced accordingly.
Michell Instruments can offer a variety of re-calibration and exchange transmitter schemes to suit
your speci fi c needs. Your local representative will be pleased to provide detailed, custom advice.
Safety Conformity
This product meets the essential protection requirements of the relevant EU directives. Further
details of applied standards may be found in the Technical Speci fi cations, Appendix A.