Industrial Automation Magazine India

Ratemeter

Published on : Tuesday 30-11--0001

In a system, it is often used with a single channel analyzer to determine the frequency of occurrence of nuclear events of specific energy. The ratemeter is also useful for system setup by indicating whether or not the instruments preceding it are processing signals.

In a ratemeter, the rate of input is determined by counting the number of pulses that occur over a certain period of time. It is similar to a counter and timer combination; however, the ratemeter performs this determination through analog means and displays the results on a meter directly, in counts per second. In the counter/timer combination, the timer controls the amount of time for which the collection of counts will occur. 

In the ratemeter, the choice of time constants determines the integration time over which the averaging occurs. The integrator signal is converted to meter current. If the time constant chosen is too long, fast input rates and transients will not be observed accurately. If the time constant is too short, the ratemeter will respond to fluctuations of input count rate. Thus, time constant selection is an extremely important parameter to consider when determining which ratemeter to choose for a particular application.

Ratemeter's count rate range, zero offset capabilities, input voltage range, linearity, recorder output voltage, readout accuracy and the type of display.

Specifications

Input	5-12 V / Potential free pulse 4-20 mA / 0-10 mA / 0-100 mV factory set Unbalanced bridge
Displays	0.5 inch 4 digit / 6 digit or 4 + 6 digit
Relay output	230 V / 5A (resi)
Supply	230 V / 110 V AC or 24 V DC
Size	96 x 96 x 100 / 150 mm.

Options
- 4-20 mA / 0-10 V Retransmission output 
- RS232 / RS485 MODBUS PC Interface 
- Logging option / Serial Printing 
- Batch counting

Contact:

Ajinkya Electronic Systems

Mobile :
     +(91) - 8655000250
     +(91) - 9869087575

Phone :
     +(91) - (22) - 24312031