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Operation
modes of nitrate sensor: measuring of concentration (mass
part) of nitrates; calibrating; measurings of pNO3.
A device is maximally easy-to-operate. There are only two functional
buttons - "CHOICE" and "START" in nitrate
sensor. In the process of measuring on a display context prompts
are represented in chosen language.
Advantage
of nitrate sensor:
-
complete
control above the process of measuring of nitrates. A device
gives to user information about basic and auxiliary measurands,
state of electrodes, results of calibrating;
-
report
on the display of device represented on three languages: Ukrainian,
Russian and English. The choice of language of interface is
carried out in the menu of setting;
-
principle is realized in a device: "measuring time is
equal to time of calibrating". Realization of this principle
allows practically to clean the casual constituent of error
of measurings. A device also can be calibrated without attachment
to time;
-
determination of parameters of electrodes. In the process
of calibrating a device determines the steepness of electrode
parameter of nitrate electrode. The parameters of calibrating
are memorized in energyindependent memory. On the values of
steepness of electrode parameter the fitness of electrodes
is determined;
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recognition of 6-ti standard solutions of comparison;
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in
the process of calibrating a device can perceive the index
of concentration or index of activity of nitrate-ion;
-
a
device calculates the mass concentration of nitrate-ion in
accordance with the standard methods of measuring of nitrates
at measurings in water, juices. It property of nitrate sensor
can be used for a leadthrough express of measurings on determination
of nitrates content in different products;
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has
32 capacity alphanumeric display with illuminate;
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certificated
in Ukraine (certificate of approval of type of measuring mean
UA-MI/1-2221-2007, issued on December, 10, 2007 , registered
in State register of facilities of measuring technique of
Ukraine with the number U2536-07).
Technical parameters:
|
Parameter |
Value |
| Measuring range
for ðñNO3 |
0,2
... 4,7 |
| Measuring range
for voltage, mV |
2
... 550 |
| Measuring range
of mass part of nitrates, mg/kg |
8
... 65000 |
| Measuring range
of mass concentration of nitrates, mg/dm3 |
2
... 39000 |
| Discrecity
indication for ðñNO3 |
0,01 |
| Discrecity indication
for voltage, mV |
0,6 |
| Discrecity indication
for mass part of nitrates and concentration of nitrates |
0,1;
1 |
| Absolute error
of measurings ðñNO3 |
±0,05 |
| Absolute error
of voltage, mV |
±1,5 |
| Absolute error
of measuring for mass part of nitrates, mg/kg |
determined
by measuring method
|
| Absolute error
of measuring for mass concentration of nitrates |
±10% |
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