Description

Electronic stopwatch “Integral S-01” is an electronic device with an independent power source and a liquid crystal display (LCD).

The principle of operation of an electronic stopwatch is based on the use of a quartz oscillator and a microprocessor that provides operation in all modes and output of measurement information to the LCD.
Stopwatches provide work in two modes – “stopwatch” and “clock”. The choice of the mode, control in each mode is made by the corresponding buttons.
In the “stopwatch” mode, it is possible to enter the measurement results into memory (the maximum number of measurements is 10), read and erase the measurement results.
In the “hours” mode, it is possible to reproduce a twenty-four hour time scale in hours, minutes and seconds.

Specifications

Name characteristics, unit mod. Meaning
Time interval measurement range, s from 0 to 9 h 59 min
Discreteness of measured time intervals, s 0,01
Limits of permissible basic absolute measurement error in the stopwatch mode under normal operating conditions (25 ± 5) °С, s
where Tx is the value of the measured time interval, s		 ± (9.6 · 10-6 · Th + 0.01)
Limits of permissible additional absolute measurement error in the stopwatch mode caused by ambient temperature deviation from normal conditions (25 ± 5) °С in the operating temperature range from minus 10 °С to 50 °С per 1 °С temperature change, s -2,2 · 10-6 · Th
Daily clock rate at a temperature of (25 ± 5) °С, s/day ± 1,0
Daily clock rate at a temperature of (23 ± 5) °С, s/day ± 0,5
Daily clock rate in the operating temperature range from 1 °С to 45 °С, except for the temperature interval (25 ± 5) °С, s/day ± 2,5
Restoration of the daily course, s/day ± 0,5
Estimated number, no more 1,6
Current consumption at a supply voltage of 1.5 V, μA, no more 4,0
Overall dimensions (length´ height´width), mm, no more 77 × 58 × 18
Weight, kg, no more 0,05
Operating conditions in stopwatch mode:
– ambient temperature, °С
Operating conditions in clock mode:
– ambient temperature, °С		 from minus 10 to 50

from 1 to 45
Transportation conditions:
– ambient temperature, °C
– relative humidity		 from minus 10 to 50
not less than 98% at 35 °C