Maintenance Using Hart Communications; Introduction; Inspection - Honeywell Searchpoint Optima Plus Operating Instructions Manual

MAN0905_Issue 7_07/17
13. Maintenance using HART
Read this chapter if HART
Searchpoint Optima Plus.
Note: The instructions that follow assume that a suitable HART
Searchpoint Optima Plus and that the user is logged in with Level 1 access privileges.

13.1 Introduction

This chapter explains how to perform common maintenance operations. Please refer to IEC/EN 60079-29-2
or other local or national regulations for guidance on establishing an appropriate maintenance routine.

Inspection

Inspection of a unit fitted with a Flow Housing
Bump Test (Gas Challenge)
Bump Test (Gas Challenge) with RGC
Re-zero Searchpoint Optima Plus
Calibration
Store Calibration Information
Investigation of Faults or Warnings
Caution: After changing any parameter, poll the Searchpoint Optima Plus and verify that the received
value is correct.
Note: When connecting or disconnecting a multimeter, power off the Searchpoint Optima Plus, otherwise
the unit will indicate a latched warning that the 4-20 mA loop was broken. If this occurs, it can be cleared
using the HART communications. See Clear Faults or Warnings.
®
13.2 Inspection
Searchpoint Optima Plus should be inspected periodically and cleaned if necessary. The required frequency
of inspection will depend on local site conditions and will need to be established through experience.
Caution: Gas readings may be generated during this procedure. Follow the steps to inhibit the
4-20 mA output. Ensure that the unit is not left in Inhibit mode.
1. Select Device Setup.
2. Select Test.
3. Select Inhibit.
4. Select Start Inhibit and press Enter.
5. The display shows a confirmation message. Press OK. The 4-20 mA output is now inhibited.
6. Inspect the Searchpoint Optima Plus unit, its junction box and cabling for any signs of physical damage.
Communications
communications are being used to communicate with
®
How to check and clean the unit
How to check and clean a unit fitted with a flow housing
How to carry out a gas test using the Gassing Cover
How to carry out a gas test using the Remote Gassing Cell (if fitted)
How to re-zero if gas test results are unacceptable
How to calibrate the zero (and span if required)
There is a text field available to the user to store useful information related
to gas testing and calibration
How to view Faults and Warnings
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Searchpoint Optima Plus with optional HART
host (handheld or PC) is connected to the
®
output
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Operating Instructions
2108M0550
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