Configure The Gas Detector; User Interface Overview; Setting Parameters; Overview - Emerson MRLDS-250 Installation And Operation Manual

5 Configure the
Gas Detector
5.1. User Interface

Overview

The gas detector is configured through the built-in
menu system. Once mounting is complete, attach the
gas detector to the base and apply power.
Figure 5-1 - The User Interface of the MRLDS-250
The user interface consists of four pushbuttons, a 
4-digit LED numeric display, and a power LED. The
four buttons allow the gas detector to be adjusted
based on a parameter list shown below. Button
functions are listed in Table 5-1.
Button
Used to access the parameter list.
Used to back up one level without
writing to memory when the
parameter list is active. Used to
mute the audible alarm for the
time period configured in
parameter P.-12.
Used to increment the value or
parameter displayed.
Used to decrement the value or
parameter displayed.
Table 5-1 - Button Functionality

User Interface Overview

Description
Button
When pressed together and held
for five seconds, this key
combination manually zeros the
gas detector.
Saves the currently displayed
parameter to memory.
Table 5-1 - Button Functionality
5.2.

Setting Parameters

5.2.1. Overview
Press and hold the information button for five seconds
to activate the parameter list:
Each parameter is shown in turn by using the UP or
DOWN buttons. The parameter is shown as P.-XX,
with XX being the parameter value. Pressing Enter
while a parameter is displayed allows the attributes of
the parameter to be set. Each Parameter has its own
attributes, as shown in the following table. Set the
attributes as desired, and then press Enter to save the
setting.
5.2.2. Configuration
Parameters
Parameter
Maintenance Mode
Sets gas detector to offline
mode for 30 minutes.
00
with normal response to its
surroundings (default).
01
and suppresses all outputs.
Display reads oFFL (offline)
during 30-minute timeout.
Table 5-2 - Parameter Numbers, Names, and
Descriptions
Configure the Gas Detector • 15
Description
Description
Gas detector is online,
Gas detector is offline,