28
C H 6 E U m / s
C A N N O T C H A N G E
In the instance that all channels have been de-selected, the logger will
challenge any attempt to leave the function until at least one channel has
been selected: -
C H A N N E L S E T U P
N O N E S E L E C T E D
4.9.1 Temperature channels
Please consult the data sheet in Section 13 to confirm which temperature
sensors are compatible with your model of datalogger. Most temperature
sensors provide an output that is non-linear across its operating
temperature range and each model has a built-in, sensor specific
linearisation protocol. Most offer a selection of temperature ranges
relating to the operating range of the specific sensor and may have
separate ranges for variants such as types K and T thermocouples or 3
and 4 wire platinum resistance sensors. For example, a logger with
thermocouple inputs will offer the following ranges: -
C H 1 ° C
- 2 0 0 . 0 / 2 0 0 . 0
where the resolution will be 0.1°C, and: -
C H 1 ° C
- 2 0 0 . 0 / 3 5 0 . 0
where the resolution will be 0.2°C. See section 5.1 for details of how to
connect thermistor sensors.
4.9.2 Voltage / current channels
Normally, these channels may be configured for voltage or current. There
are 18 voltage ranges and 2 current ranges, details of which may be
found in the data sheet in Section 13. These channels have an additional
range called the EU (Engineering Units) range where you can select
specific engineering units (e.g. Lux) and a min/max scale (e.g. 0/500 Lux);
the appropriate voltage/current range is then selected from the existing
hardware ranges (e.g. 0/5V). In this example, when the appropriate
channel is selected, the following will be displayed: -
