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1.3 Technical data
1.3.1 Range of hydrogen-ion activity index measurements by pH-meter at
analyzable fluid temperature of (25.0 ± 0.2)
С, pH ..........………... 0.000 to 12.000.
1.3.2 The range of pH-meter allowable basic absolute accuracy on
measuring pH at analyzable fluid temperature of (25.0 ± 0.2)
С and ambient air
temperature of (20 ± 5)
С, pH ………………………….……………………... ± 0.050.
1.3.3 The range of pH-meter allowable complementary absolute accuracy on
measuring pH caused by changes in analyzable fluid temperature within pH-meter
temperature compensation range as shown in Table 1.2, pH ……………… ± 0.100.
1.3.4 The pH-meter analyzable fluid temperature measuring range,
°С………………………………....……………….………….………..... 0.0 to plus 70.0.
1.3.5 The range of pH-meter allowable basic absolute accuracy on
measuring analyzable fluid temperature at ambient air temperature of (20 ± 5)
С,
С...................................................................................................................... ± 0.3.
1.3.6 The range of pH-meter allowable complementary absolute accuracy on
measuring analyzable fluid temperature caused by deviation of ambient air
temperature from the normal one (20 ± 5)
С per each ± 10
С within the operating
temperature range from plus 5 to plus 50
С, °С ………..…..…………………. ± 0.1.
1.3.7 pH-meter U measuring range, mV...from minus 1.000.0 to plus 1.000.0.
1.3.8 The range of transducer allowable basic absolute accuracy on U
measurements at ambient air temperature of (20 ± 5)
С, mV ………………... ± 0.5.
1.3.9 The range of transducer allowable complementary absolute accuracy
on U measurements caused by deviation of ambient air temperature from the
normal one (20 ± 5)
С per each ± 10
С within the operating temperature range
from plus 5 to plus 50
С, mV …………………………………………………….. ± 0.3.
1.3.10 Transducer pH measuring range, pH ………….. from 0.000 to 15.000.
1.3.11 The range of transducer allowable basic absolute accuracy on pH
measurements at ambient air temperature of (20 ± 5)
С, pH ...…………… ± 0.020.
1.3.12 The range of transducer allowable complementary absolute accuracy
on pH measurements caused by variations of analyzable fluid temperature from 0
to plus 70
С (transducer temperature compensation accuracy), pH .…….. ± 0.020.
1.3.13 The range of transducer allowable complementary absolute accuracy
on pH measurements caused by deviation of ambient air temperature from the
normal one (20 ± 5)
С per each ± 10
С within the operating temperature range
from plus 5 to plus 50
С, pH …………………………………………………... ± 0.005.
1.3.14 The range of transducer allowable complementary absolute accuracy
on U measurements caused by resistance effect in the measuring electrode circuit
per each 500 MΩ at variations from 0 to 1.000 MΩ, mV ….............................. ± 0.2.
1.3.15 Transducer output (reading) setting time, s, maximum …..……….. 10.
1.3.16 pH-meter output (reading) setting time, min, maximum …..……….. 10.
1.3.17 When connected to a PC through a USB jack, the pH-meter
communicates with the PC.