Honeywell ERX350 User Manual page 3

About this document
This document is for operators and technicians working in the natural gas industry. This
document provides an overview of ERX350 and instructions to install ERX350. It also describes
how to connect to the instrument via MasterLink software, configure, calibrate pressure &
temperature and retrieve various types of stored data. In addition, this document provides
information on how to navigate through the Human Machine Interface (HMI) menus and
introduces the user to different communication mechanisms featured in this device.
The Honeywell ERX350 is a microprocessor-based, stand-alone, self-powered data recorder
that measures gas pressure(s), gas temperature, case temperature, and power supply voltages.
Sampled measurements, logged audit trail data, alarms entries, user change events, and
operating parameters are stored in non-volatile memory. The stored data may be retrieved
directly with a laptop computer, PC, mobile devices, or remotely via modem. ERX350 recorder is
capable of recording audit trail data into (up to five) independent loggers. Each of the loggers
can be configured for; number of items, logging interval and record size. Using the display and
keypad, the user can configure the recorder and perform various other activities. The ERX350
offers a large feature set along with a path forward to support new technologies.