Honeywell Searchpoint Optima Plus - 13. Maintenance using HART Communications; 13.1 Introduction; 13.2 Inspection

MAN0905_Issue 7_07/17 Searchpoint Optima Plus with optional HART
®
output
Operating Instructions
2108M0550
61
13. Maintenance using HART
®
Communications
Read this chapter if HART
®
communications are being used to communicate with
Searchpoint Optima Plus.
Note:TheinstructionsthatfollowassumethatasuitableHART
®
host (handheld or PC) is connected to the
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
How to check and clean the unit
Inspection of a unit tted with a Flow Housing
How to check and clean a unit tted with a ow housing
Bump Test (Gas Challenge)
How to carry out a gas test using the Gassing Cover
Bump Test (Gas Challenge) with RGC
How to carry out a gas test using the Remote Gassing Cell (if tted)
Re-zero Searchpoint Optima Plus
How to re-zero if gas test results are unacceptable
Calibration
How to calibrate the zero (and span if required)
Store Calibration Information
There is a text eld available to the user to store useful information related
to gas testing and calibration
Investigation of Faults or Warnings
How to view Faults and 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conrmation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.