Selecting The Gas Reading Units; Commissioning Using Hart Dtm Communications - Honeywell SEARCHLINE EXCEL PLUS Technical Manual

Menu Navigation
Menu options can be selected by highlighting the option and pressing Enter, by pressing the number of the option, or by
double clicking on the option. For more information on how to select menu options please see the instructions for the HART
host device being used.
Error Reporting
Searchline Excel Plus & Searchline Excel Edge implement HART protocol Command 48, meaning that if any event is
detected in the detector while a HART host is connected, it will be reported immediately. Therefore warning messages may
pop up during other operations.
10.2.1 Selecting the Gas Reading Units
Select menu Device Settings → 5 System Setup → 8 Configure System → 4 Gas Reading Units
Select from the available options:
0 – (1-ratio) * 100%
1 – LELm
2 – PPMm
10.3 Commissioning using HART DTM Communications
Note:
The instructions that follow assume that a suitable HART host is connected to the Searchline Excel Plus &
Searchline Excel Edge and that the user is logged in with 'Engineer' profile access privileges.
Introduction
This section explains several operations that may be required during commissioning. The user should work through
First Time Switch On, User Configuration and Configure Device Identification Information, before selecting further
operations as required by the specific installation.
First Time Switch On
User Configuration
Configure Detection Algorithm Mode
Test 4–20 mA Loop Integrity
Configure Alarm Set Point
Output Test
Clear Latch
CAUTION
!
After changing any parameter, poll the Searchline Excel Plus & Searchline Excel Edge and verify that
the received value is correct.
Searchline Excel™ Plus / Searchline Excel™ Edge – Technical Manual
Chapter 10 Communications
Verifications required on first power up.
How to change settings from the default values:
Change the Password – how to change the password for
'Engineer' profile access.
Set the Time and Date - how to adjust the real time clock to local
time.
Configure Warning, Inhibit and Over-range Signal Levels -
how to change the signal levels from the default settings.
How to set algorithm mode for gas leak detection
How to force the mA output to set levels to test the system.
How to check that there is sufficient compliance in the loop to
signal alarm and over-range.
How to change the internal threshold used to log gas leak events.
How to test the system by simulating Alarm, Warning and Fault
conditions for Relay and mA loop.
How to clear alarm latch generated during commissioning.
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