Yokogawa 202 Field Mounting Rate Totalizer Uživatelský manuál stáhnout pdf (Strana 16)

Operation

3.4 CALCULATION OF RATE AND TOTAL

The flow rate, R, is calculated as follows:

where f is the input frequency in Hz (pulses/second).

H is the timebase of rate and is 1 for seconds, 60 for minutes, 3600 for

hours and 86,400 for days.

S is the scaling factor (pulses/unit volume).

The scaling factor, S, is equal to the K-factor of the flowmeter expressed in pulses

per unit volume. The K-factor is flowmeter dependant and is supplied with the

flowmeter. It will be either on a calibration certificate or stamped on the body of

the meter.

The user programs the scaling factor and selects the timebase during the

programming procedure.

f x H

1 2 ... 11 12 13 14 15 16 17 18 19 20 21 ... 47 48

Žádné komentáře

Yokogawa 202 Field Mounting Rate Totalizer Uživatelský manuál Strana 16