Fluke Datapaq Food Tracker User Manual page 40

Preparing the Data Logger and
Thermocouples
The logger should be inspected externally before every profile run, as follows.
• Look for any signs of salt crystals or dirt, particularly in and around the
sockets and communications port. Remove carefully with damp tissue or
cotton-bud, and dry thoroughly.
• Inspect thermocouple cables for general wear and tear, especially cuts in the
insulation and sharp bends that may indicate a break in the wire.
• Inspect each thermocouple's connector, particularly the silver and copper
pins. Wipe clean with a warm damp cloth, and then wipe dry. If any
corrosion is seen on either pin (e.g. black oxide on the copper pin), remove
carefully with very fine sand paper or by scraping gently with a sharp knife.
• After thermocouple probes are connected to the logger, they should be
tested. See p. 62.
Resetting the Data Logger
The data logger needs to be reset, as follows, before it can receive fresh data.
(To reset the logger for use with hardwired telemetry, see p. 51.)
The procedure described here uses the Insight software's Logger Reset dialog.
If you are less sure of the process, you can instead use the Logger Reset Wizard to
guide you, step-by-step, through this stage of running a profile: click
Insight toolbar, or select Tools > Wizards from the menu.
Any data stored in the logger but not yet analyzed must be downloaded before
proceeding, as resetting the logger will permanently erase all data stored in it.
1. Use the communications lead supplied to connect the logger to a free COM
(serial) port or USB port on the PC. (To minimize communications
problems, connect the lead first to the PC and then to the logger.) The red
LED on the logger should flash five times to confirm that the connection
between the communications lead and the logger has been made (if it does
not, see 'Communications Setup', p. 14). If the logger is not already
charged, connect the battery charger lead to the charger connector on the
communications lead.
2. Open the Logger Reset dialog (click
function key F2, or select Logger > Reset from the menu bar) and specify
your reset options.
Sample Interval Set the time which is to elapse between each set
(sample) of data points (one data point for each probe) that the logger will
40
Running a Temperature Profile
on the Insight toolbar, or press
on the
FOOD TR ACK ER