General Catalogue Chemistry - BECO Internacional LTDA.

measuring equipment – time
666 095
Time switch
166 LEYBOLD DIDACTIC · GENERAL CATALOGUE CHEMISTRY
For programmed switching of electrical devices,
e.g. hot plates, heating hoods, furnaces,
thermostats, stirrer motors, etc.
Switch-on time: from 0.25 h at constant operation
in 24-hour cycle, 3 on-off phases per
24-hour period can be programmed
Switching capacity: max. 16 A
Power supply: 230 V
(for direct connection to a mains socket)
Dimensions: 70 x 70 x 80 mm
313 031
Electronic stop-clock P
666 096
Timer
Forwards and/or backwards counter (two-channel
counter) or time; buzzer alarm (1minute)
when the timer has counted down to zero; each
counter channel can be read out separately.
Display: LCD, 6 digits
Timer range: 99 h 59 min 59 s
Clock interval: 1 s
Dimensions: 75 x 65 x 10 mm
Weight: 65 g
For measuring short time intervals, with quasi-analogue 0.01 second display
consisting of 100 LEDs arranged in a circular array. Full seconds indicated
on luminous digital display, with overrun indicator LED.
Timing started and stopped either dynamically, i.e. the inputs (START
and STOP) respond to rising and failing edges (edge-sensitive) or statically,
i.e. the input (START/STOP) responds to the state (state-sensitive).
This enables timing of either intervals between two events of the duration of
an event.
Timing can also be started and stopped manually using the integrated
rocker switch. Switches or electrical pulse generators can be used for
external control, e.g. a light bar-rier at a DIN socket or a contact plate or
microphone at the 4-mm sockets.
The electronic stop-clock P can either be used as a bench-top unit or
inserted in the demonstration experiment frame.
Measuring range: 99.99 s (overrun indicator when exceeded)
Reading accuracy: 0.01 s
Time base: quartz, 16 MHz
Dial: LED ring, 17 cm diameter
Numeral height: 18 mm (7-segment display)
Signal inputs:
three 4-mm socket pairs, as well as three DIN sockets with built-in voltage
supply for light barriers (5 V DC for photodiode and 6 V DC for light source)
Reset input: 4-mm socket pair
Power supply: 230 V, 50/60 Hz via mains cable
(115 V available on request)
Power consumption: 10 VA
Fuses: 230 V - T 0.125 B; light barriers - T 0.315 B
Dimensions: 20 cm x 30 cm x 12 cm
Weight: 1.4 kg