User's Manual

WEMS Installer’s Guide 5
Introduction
Wellhead Pressure Monitor (iWPM-T)
The Luna iMonitoring iWPM-T is an autonomous, wireless
pressure monitor for sensing pressure at the wellhead in oil
and gas applications. Typically, the sensor acquires five
pressure and temperature readings per day in monitor mode.
An iCCU may interrogate an iWPM-T at any time within a
range of 2500 feet, and a portable device, such as a
PocketPC
®
, can poll the unit within a range of 500 feet. The
iWPM-T performs on-board data storage and processing, and
transmits over a secure, bidirectional radio link. The unit
optimizes power based on the current energy storage, and
requires only a single, solar-assisted battery. The iWPM-T is
easy to install, and is installer configurable and upgradeable.
The unit incorporates an IP65 ruggedized enclosure and meets UL-913
certification requirements for an intrinsically safe device in Class I, Division 1,
Groups C and D hazardous areas.
Secure Digital (SD) Card
The SD Card supplied with the system contains the WEMS
Software for a PocketPC
®
running version 3.0 of the
PocketPC
®
operating system. The SD Card plugs into the
standard SD slot found on all PocketPC
®
s. The WEMS
Software requires a one-time installation per PocketPC
®
, and
includes programs for defining, accessing, and interrogating
multiple iMonitoring devices. Chapter 3, “WEMS Software”,
includes a detailed discussion on the installation and use of
the WEMS Software.
User-supplied Components
For on-demand sensor measurements and data acquisition in the
field, the user must supply a PocketPC
®
, such as the one shown
at the left, to interrogate the iCCU, iWPM-T, and iTLM-1. The
PocketPC
®
must have a CF Card slot to accommodate the iCFR,
and an SD slot for the WEMS Software SD Card