Michell Instruments Pura 2-Wire, Руководство пользователя

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Pura 2-Wire/3-Wire/Digital Transmitter
User’s Manual
Michell Instruments 1
INTRODUCTION
1 INTRODUCTION
The Pura Series of transmitters has been manufactured, tested and calibrated to
the highest available standards and should arrive in perfect working order, ready for
installation into a gas measurement application.
If there are any questions about the transmitter or how to install it, not detailed in
this Manual, contact your local representative. Refer to www.michell.com for details of
Michell Instruments’ worldwide of fi ces’ contact information.
1.1 Features
The Pura Series are a continuous, on-line, 4-20 mA/digital transmitter family for the
measurement of moisture content in air and other non-corrosive gases.
Their key features are:
• Accuracy ±1°C dp
• 0.5°Cdp (0.9°Fdp) repeatability
• 2-wire connection - linear 4–20 mA signal
• 3-wire connection - linear 4-20 mA signal
• Digital transmitter - 4-wire connection - digital string signal (NOTE: only
works with the Pura AOL monitor)
• Operating pressure range - up to 24 MPa (240 barg / 3480 psig)
• Operating range - 120 to -40°Cdp (-184 to -40°Fdp)
• Moisture content ppm
V
(2-wire)
• Powered by any DC source from 12 to 28 V