To start logging when a Dual Interface Block is fitted, and plug-and-go is
selected as the trigger mode (p. 49):
1. Ensure that both Transducer Interfaces, with their probes
connected, are attached to the Dual Interface Block.
2. Plug the MemoryPaq into the Dual Interface Block.
This sequence must be followed.
Data-recording then starts, and the green logger-status LED starts flashing at
the sample interval.
Memory Capacity
The logger has 4 Mb of memory. In use, this total is divided between the
number of probes attached; thus (for a given sample interval), the fewer probes
selected, the longer the total run duration. Examples of run durations are
shown below; if multiple runs (p. 48) are being performed, each duration
given here is the total of all such runs:
Number
of Probes
Number of
Transducer Interfaces
Sample
Interval
Total Run
Duration
1 1 5 s 37.5 hrs
6 1 5 s 20.5 hrs
8 1 5 s 17 hrs
12 2 5 s 13 hrs
16 2 5 s 10.5 hrs
Memory is thus sufficient to store 10 runs of 60 minutes each, with 16 probes
and sample interval of 5 s.
Battery
The logger uses a pack of rechargeable nickel-metal-hydride (NiMH) cells.
Expected battery life is about 500 charge–discharge cycles, or three years if
sooner. The logger must be returned to Datapaq for battery replacement.
Only battery packs supplied by Datapaq are suitable.
Charging
Recharge the battery as follows.
1. Plug the charger into the electricity supply.
2. Connect the charger lead to the charging socket on the MemoryPaq.
OVEN TRACKER XL2 Logger Specifications and Operation 23
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