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3.7.4.
External PT-100 and NTC
Sensor Connection
The PT-100 (for the DNL910 and DNL920) and NTC (for
DNL808) sensors, as supplied by Fourier Systems comes pre-
wired to the data logger’s terminal block.
The PT-100 positive polarity (red) and ground (white) wires
are connected to the + input of the terminal block. The
negative polarity (black) wire is connected to the – input on
the terminal block.
3.7.5.
Programming Limitations for
DNL910 and DNL920
The standard sampling rate for all sensors on all inputs is from
a maximum of one sample every second to a minimum of one
sample every two hours. However, there are certain
limitations using a specific combination of sensors, which
must be taken into account when programming the DataNet
data loggers.
Note:
The software integrates all programming limitations
automatically when configuring the loggers.
Please refer to the table below for DataNet programming
limitations, where:
PT100, Thermocouple J, K or T
= A
Internal Digital Temperature (on DNL920)
= B
Sensor
Combination
Maximum
Sampling Rate
Example Setup
3 x A
4 x A
One sample every
three seconds
In-1:
PT-100
In-2:
TC-J
