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UPDATING FIRMWARE
The firmware, that is the programme which manages all the instrument functions, may be updated
by transferring the file to the DO9847 through the serial port RS232C. In this way it is possible to
add new types of probes or to update the functionality of the instrument. The update files are avail-
able from authorised dealers.
To update firmware, you need DeltaLog3 program to be installed on your PC, as well as a DO9847
unit, version 2.0 or higher. See “DeltaLog3 Handbook” online manual for details concerning this
procedure. DO9847 units having a version prior to 2.0, can be upgraded directly by DeltaOhm.
METHOD
OF
USING
THE
INSTRUMENT
AND
WARNINGS
1.
Do not expose the probes to gases or liquids that could corrode the material of the sensor or of
the probe; clean the probe carefully after measurement.
2.
Do not bend the connectors applying upward or downward force.
3.
. Do not bend or force the contacts when inserting the probe connector in the instrument.
4.
Do not bend, deform or drop the probes as this could cause irreparable damage.
5.
Always use the most suitable probe for the measurement to be taken.
6.
Temperature probes are not generally used in the presence of corrosive gases or liquids; the con-
tainer in which the sensor is housed is made of stainless steel AISI 316, while the container for
the contact probe is of AISI 316 plus silver. Do not let the surfaces of the probe come in contact
with sticky surfaces or with substances that can corrode or damage the probe. If the sensor
breaks or becomes faulty it must be replaced. In this case the probe must be recalibrated.
7.
Above 400°C and below –40°C avoid violent blows or thermal shock to the Pt100 temperature
probes as these could cause irreparable damage.
8.
To obtain a reliable temperature measurement, too fast temperature variations must be avoided.
9.
Temperature probes for surface measurements (contact) must be held in a vertical position with
respect to the surface. Apply a some oil or heat-conductive paste between the surface and the
sensor so as to improve contact and reduce the reading time. Do not absolutely use water or
solvents to do this.
10.
Measurements on non-metal surfaces require a great deal of time on account of their low heat
conductivity.
11.
The probes are not insulated from their external casing. Be very careful not to come into contact
with live parts (above 48 V): this could be dangerous not only for the instrument but
also for the operator, who could suffer an electric shock.
12.
Avoid taking measurements in the presence of high frequency sources, microwaves or large
magnetic fields, as the results would not be very reliable.
13.
Always clean the probes carefully after use.
14.
The instrument is resistant to water but it is not watertight and should not therefore be immersed
in water. If it should fall into the water, take it out immediately and check that no water has in-
filtrated. The instrument must be handled in such a way that water cannot get in through the
connector side.
