2.1 Mechanics 2.1.2 Dynamics
The chronometer Timer 2-1 has a 4-digit digital display and has been specially designed for use in student experiments and demonstrative teacher experiments. Benefits ▪ ▪
The starting and stopping of the built-in timer piece, as well as counting, is effected by the opening and closing of electrical circuits, across light barriers or other TTL signal sources. Many and various experimental requirements can be fullfilled with the 4 different operating modes that the Timer 2-1 makes available for track experiments, for the measurement of the time, of revolution, of a turning movement, for the direct measurement of the period of a full swing, of a mechanical pendulum and for the counting of events
Timer 4-4 with USB-interface 13604-99 Software Timer 4-4 14413-61 Cobra3 BASIC-UNIT, USB 12150-50 Cobra4 Sensor-Unit 3D-Acceleration, ± 2 g, ± 6 g 12650-00
Universal Counter
Equipment and technical data (typical for 25°C) ▪ ▪
Operating temperature range: 5...40°C Relative humidity: < 80%
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Control: (Start/ Stop) by electrical circuits (contact closure/ contact opening or level ACC to TTL-Norm) Digital display: 4-Digit LED display, digit height 19 mm Time measurement: Measuring range 0.000...9.999 s resolution 1 ms Pulse counting: Measurement range 0...9999 pulses Limiting frequency 1 kHz, shading period > 500 µs Operating voltage: (Stabilized) 5 V ± 5 %, (suitable power supply 5 VDC/ 2.4 A, 13900-99, standardly supplied) Power consumption: 1.8 VA Supply connector: connecting socket for hollow plug, diam. 2.1 mm at the back of the instrument, 5 VDC/ 350 mA Overvoltage and reverse polarity protection: up to max. 12 V Housing dimensions (mm): 190 × 130 × 140 (W, H, D) Weight: approx. 920 g
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13607-99
Function and Applications The universal counter is used for measuring time, frequency, pulse rates, pulse counting, periodic times, speeds and velocities. Benefits ▪
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TESS Physics Set Mechanics ME3 with Timer 2-1 13283-88 TESS Physics Set Mechanics ME1 13271-88 TESS Physics Set Mechanics ME2 13272-88 TESS Physics manual Mechanics 1 to 5 01158-02 Software interTESS, DVD 01100-00
Timer 4-4 with USB-interface
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The device has all the qualities that are expected of a modern universal counter and is also equipped with a number of technical specifics of how it specifically arise from the requirements of science teaching practice. For the scientifically correct representation of each measurement is shown in principle with the associated unit. With the overflow of the display is automatically switched into the next area. Before the measurement starts it can be manually adjusted to a maximum of 6 decades defined range, eg to suppress is not physically meaningful digits on the display. A special jack for direct connection of a GM counter tube is available for radioactivity experiments. The required voltage can be changed manually to determine the characteristics of a counter tubes to. The stopwatch function can be entered by means of electrical contacts, sensors, or manually in the various types of triggers for the precise starting and stopping for time measurement. The measured values are represented by six red 20mm highcontrast 7-segment displays. An additional three-digit display is used to display the unit (ms, s, Hz, kHz, MHz, I / s, RPM, Imp, V, m / s). The various operating states are indicated by LEDs. Range switching in all modes manually (before measurement) and automatically when an overflow.
Equipment and technical data
Multiple time measuring instrument for avariety of applications in practicals and teaching. The timer unit has four 4digit displays. The starting and stopping of the four built-in independent timers is actuated by the opening or closing of electrical circuits, by means of light barriers or other TTL signal sources (e.g. amicrophone).
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Operating temperature range 5th .. 40 ° C Relative humidity <80% Digital display: Measurement reading LED 6-digit, 7-segment, 20 mm Units LED 3-digit, 5x7 dot matrix Units ms, s, Hz, kHz, MHz, I / s, RPM, Imp, V, m / s Signal Input: Signal bandwidth 0.1 Hz .. 10 MHz Counter Tube Input voltage 150 V. .. 660 V (factory setting: 500V) with manual adjustment Photoelectric output for power supply of 5 V sat. max 1 A Stopwatch 0.000 ... 99,999.9 s, resolution 1 ms Timer 0.000 ms ... 3999.99 s, resolution1µs Velocity 0.000 m/s...9999.9 m / s, resolution 0.001 m / s Period measurement 0.000 ms ... 99.9999 s, resolution 1µs
PHYWE Systeme GmbH & Co. KG · www.phywe.com 65