PUF系列便携式超声流量计套件，利用传输时间差测量管道流量。 它是一款小巧轻便的仪器，采用了的电子和信号处理技术，实现了高性能和易于操作。 该设备内置电池，可连续工作20小时。 PUF配备了一个IP67的保护箱，带有模制泡沫插入件，以容纳和保护所有设备，防止灰尘和水。 屏幕提供易于阅读的文本与方便的背光。 功能键的有效布局增加了本单元的易于使用的编程。 该设备配有RS232和USB接口，可以方便地连接到任何个人电脑或打印机。

操作原理 两个传感器被放置在管道的外部，每个传感器通过管道和流体向另一个发送超声波脉冲。液体流经管道的速度使脉冲加速或减速。利用两个脉冲的传输时间之差来计算流量。通过时间的使用使流量计不受压力或温度变化的影响。

Service:Homogeneous liquids that do not contain air bubbles capable of ultrasonic wave propagation.

Inputs:Lemo connector cable from sensors.

Range:0.33 to 65.62 ft/s (0.1 to 20 m/s).

Display:240 x 64 pixel graphic display, high contrast black on white with backlight; Languages: English, French, German, Swedish, Italian, Spanish, Portuguese, Russian, Norwegian, and Dutch; 5.2" W x 1.5" H (132.1 x 38.1 mm).

Accuracy:± 0.5 to 2% of flow reading for flow rate > 0.66 ft/s (0.2 m/s) and Pipe ID > 3 in (75 mm). ± 3% of flow reading for flow rate > 0.66 ft/s (0.2 m/s) and Pipe ID in range 0.5 to 3 in (13 to 75 mm). ± 6% of flow reading for flow rate <0.66 ft/s (0.2 m/s).

Power Requirements:9 to 24 VDC; (1) 5-Cell NiMH battery, internal, factory replaceable (continuous operation time: 20 hours with back light and output off); (recharging time: 6.5 hours, power adapter used).

Power Consumption:10.5 W.

Power Adapter:110/240 VAC adapter; UK,US, European adapters included.

Temperature Limits:-4 to 275°F (-20 to 135°C).

Outputs:

Analog:
1 opto-isolated output: 4 to 20 mA, 0 to 16 mA or 0 to 20 mA (selectable); Error current: 0 to 26 mA (selectable); Load resistance: 620 O max;
Pulse:
1 opto-isolated MOSFET relay, 150 mA max, 500 pps max, 200 Hz max.

Serial Communications:USB; RS-232.

Enclosure Rating:Transducers: IP51; Carrying Case: IP67; Converter: IP54.

Materials:Flame retardant injection molded ABS plastic.

Repeatability:±0.5 % of measured value or ±0.066 ft/s (0.02 m/s).

Electrical Connections:Multi-pin Lemo plugs.

Turbidity:<3% by volume of particulate content.

Permissible Air Content:<3% by volume.

Response Time:<500 ms.

Weight:Unit without accessories: 2.30 lb (1.06 kg); Unit with accessories in carrying case: 14.40 lb (6.52 kg).

Agency Approvals:CE.

ADDITIONAL SPECIFICATIONS

Applicable Pipe Material:Carbon steel, SS, copper, UPVC/PVDF, concrete, galvanized steel, mild steel, glass, brass.

Applicable Pipe Lining:Rubber, glass, concrete, epoxy, steel, other*.

Pipe Wall Thickness:0.04 to 3" (1 to 75 mm).

Pipe Lining Thickness:<1" (<25 mm).*Selectable option for special material with known propagation rate of the lining material.