GF PF220 V2 Betriebsanleitung Seite 314

输出
返回上述例子：显示 150 l/s 的流量需要 15 个脉冲。由于流量计每秒只能生成 10 个脉冲，因此剩余的 5 个脉冲只能作为留置。
流量计可以保存多达 1000 个未决脉冲，因此在出现故障前，它在 1000/5=200 秒内可以处理的流量为 150 升/秒。然而在某些时
候，流量必须低于每秒 100 升，待决脉冲的总数才能降低。
确定每个脉冲的合适体积
How to calculate a suitable
1.Convert Max. flow rate
Example
Max. flow rate = 2000 gallons per hour
Max. volume per second = Max. volume per hour (gallons per hour) / 3600
Max. volume per second = 2000/3600 = 0.555 gallons per second
Max. volume per second
Example
0.555 gallons per second
2, Calculate Max. pulses per second from
Example
Pulse width = 25 ms
Max. Pulses per second = 500 /
Max. Pulse per second = 500 /
能量脉冲（仅限 HM 型号）
每个脉冲都带有一定的能量，如 1 kWh。由于最大脉冲率的限制（参阅上节内容），每个脉冲可能需要更高的能量或更小的脉冲
宽度才能显示可能值的范围。
How to calculate a suitable
1.Convert Max. power (eg. BTU/h) to Max. energy per second
Example
Max. power = 15,000 BTU/h
Max. energy per second = Max. energy per hour (BTU/h) / 3600
Max. energy per second = 1500/3600 = 4.1666 BTU/s
Max. energy per second
Example
4.1666 BTU/s
2, Calculate Max. pulses per second from
Example
Pulse width = 25 ms
Max. Pulses per second = 500 /
Max. Pulse per second = 500 /
314
Volume per pulse value from
(eg. gallons per hour to Max. volume per second
Max. pulse per second
Example
20
Energy per pulse value from
Max. pulses per second
Example
20
Maximum flow rate and
3. Calculate
Example
Calculated:
Rounded up to next digit:
Rounded up to next decade:
pulse width (ms)
Pulse width (ms)
25ms = 20
Maximum power and Pulse width
3. Calculate
Example
Calculated:
Rounded up to next digit:
Rounded up to next decade:
pulse width (ms)
Pulse width (ms)
25ms = 20
Pulse width (Imperial)
Volume per pulse
0.02777 gallons
0.03 gallons
0.1 gallons
(Imperial)
Energy per pulse
0.20833
0.3 BTU
1 BTU
操作说明书