Breckland Scientific 2021 Catalogue

Timers

Laboratory Timers

a

1 PSU BASE MAX SERIES SCALER TIMER FREQUENCY METER A versatile unit that functions as a frequency meter, a timer, and a scaler/ ratemeter. Six bright 14mm LED digits make it suitable for individual use or class demonstrations. As a millisecond timer it can respond to both rising and falling edge signals for use in timing air track experiments etc using 2 pairs of 4mm inputs. Alterntively a pair of purpose designed light gates are avaialble seperately. As a frequency meter it can accurately measure the frequency of a wide range of inputs including those from a signal generator or stroboscope. In ratemeter mode it will accept inputs from a GM tube via BNC or TNC sockets to easily perform radioactivity experiments. The GM tube is powered by an adjustable 300 to 500V E.H.T. internal supply. A built-in speaker provides an audible indication when used as a ratemeter. A sophisticated microprocessor handles all the functions and the unit is very easy and intuitive to operate.

1

b

c

d

e

Specifications: • Time range: 0.1ms - 999999 s • Time resolution: 0.1ms (lowest)

f

• Freq. range: 1 - 100000 kHz, where voltage > 1.5 V • Counting periods: 1/10/60/100 s or manually triggered

• Input A: 4-mm safety sockets x 2 • Input B: 4-mm safety sockets x 2 • Input voltage A: 0.5 V - 15 V AC • Input voltage B: 1 V - 15 V AC • Display: Six-digit bright 14mm L.E.D. • Reset/Hold switch

g

h

• Radioactivity Inputs: GM tube via BNC or TNC socket with • GM Tube power supply: 300-500V. continuously variable • Scaler 0-999999 counts • Ratementer 0-999999 counts per second Cat No. Description

i

Price Per

j

TMH-740-100 Max Series Scaler Timer

289.90 ea.

TMH-740-150 Max Series Ligth Gates x 2

75.90 Pr.

PSU Base Scaler Timer Frequency Meter

k

2 SCALER TIMER FREQUENCY METER A multi-purpose instrument which is invaluable in the physics laboratory, combining the functions of a multi- purpose timer, a ratemeter and a frequency meter in one compact unit. It has four, 7-segment LED digits, 13mm high. The high brightness and large size display make it ideal for classroom demonstrations. It can be used as a simple stopwatch or more sophisticated applications such as dynamics experiments with air tracks etc. The scaler and ratemeter modes allow numerous radioactivity experiments to be undertaken. When used as a frequency meter the instrument will accept diversified waveforms and may be used to determine the rotational frequency of a stroboscope disc and for displaying the frequency of a waveform from a signal generator. The instrument can be pulse operated to enable moving bodies to be timed using phototiming gates. When used as a scaler or ratemeter the input signal can be via either a GM tube or a solid-state detector with an audio output. Housed in a robust metal case with a durable powder coated finish. Specifications Timer : 4 Auto Ranges (0 to 9.999s, 10 to 99.99s, 100 to 999.9s & 1000 to 9999s) Scaler : 3 Auto Ranges (0 to 9.999x1000, 10 to 99.99x1000 & 100 to 999.9x1000 counts) Accuracy : ±0.01% Sensitivity : 160mV peak Ratemeter : 3 Auto Ranges (0 to 9.999x1000/s, 10 to 99.99x1000/s & 100 to 999.9x1000/s) Frequency Meter : 3 Auto Ranges (0 to 9.999kHz, 10 to 99.99kHz & 100 to 999.9kHz)

l

2

m

n

o

p

q

r

Scaler Timer Frequency Meter

Max Input Signal: 20V rms Max Sensitivity : 250mV rms Range : 10Hz to 1MHz Size : 255 x 220 x 110mm Cat No. Description

s

Price Per

t

TMH-760-100 Scaler Timer Frequency Meter

330.77 ea.

v

w

454

Value | Service | Expertise