Features - Michell Instruments XTP501 User Manual

INTRODUCTION
1.2

Features

• There are 2 versions of the 501 available:
Analyzer with display and keypad
Transmitter (base model)
• The 501 is calibrated in a specific background gas to match customer's
requirements. This is displayed on the front screen of the analyzer or via
the Application Software.
• The 501 provides 2 off 4-20 mA analog output signals that are proportional
to the oxygen/target gas concentration. The primary 4-20 mA output is
locked on the calibrated range of the instrument. The secondary output
is user-configurable.
• Modbus RTU over RS485 protocol serial communications are provided as
standard.
• The innovative designs of both sensors have no moving parts. This makes
them less sensitive to vibration and highly resistant to drift over a long
period of time, compared to other sensing technologies.
• The splash-proof enclosure (IP55 rated) allows the 501 to be installed on-
site, at the measurement point in most indoor applications, without the
need for an additional enclosure.
• All the analyzer functions can be accessed through the built-in or remote
HMI or via the Application Software.
• 2 x single pole change-over relay alarms for concentration, supplied as
standard. Can be configured as OFF, LOW or HIGH.
• If the sensor temperature is outside of the allowed tolerance, the mA
output can be configured to be driven LOW or HIGH.
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XTP501 & XTC501 User's Manual
99976 Issue 1.1, May 2020