-A- Specifications
PORTABLE ULTRASONIC FLOW METER SPECIFICATIONS
SCOPE: This specification covers a portable, ultrasonic Transit Time flow meter by Greyline Instruments, Largo, Florida / Long Sault, Ontario. This portable instrument shall provide for non-intrusive flow measurement, indication, totalizing and transmitting of the flow rate in a full pipe.
GENERAL:
Each portable Transit Time flow meter shall have the following design features and engineering specifications:
A. PERFORMANCE SPECIFICATIONS

Have an accuracy of ±2% of reading in most clean fluid applications. Have repeatability of ±0.5%.
Operate on clean liquids in full pipes with less than 2% solids or gas bubbles.
Operate on any sonic conducting pipe material such as carbon steel, stainless steel, galvanized steel, mild steel, copper, UPVC, PVDF, glass, brass and including pipes with bonded liners of epoxy, rubber or cement.
Operate on AC/DC power. Include an internal NiMH rechargeable battery with capacity for 16 hours continuous battery operation. Recharge and operate with power input of 100-260VAC 50-60Hz.

B. ULTRASONIC TRANSDUCERS

Have a dual 2 MHz transmitting/receiving, clamp-on transducers.
The transducers shall be waterproof and operate continuously at temperatures from -4°F to 275°F (-20°C to 135°C).
The transducers shall be designed to install on pipes with inside diameter ranging from 0.51″ to 4.5″ OD (13 mm to 115 mm).
Have a 6 ft (2 m) long cable from the transducers to the electronics.
Shall include manufacturer’s recommended sensor coupling compound.
Shall include stainless steel sensor mounting guiderails with clamps permitting installation and removal of transducers.
Shall include a transducer test block to allow the transducers and inter-connecting cables to be functionally checked.

C. ELECTRONICS

Have a portable, hand-held ABS enclosure plus a padded carrying case containing the flowmeter, sensors and accessories. Total shipping weight shall not exceed 13 lbs (6 kg).
Electronics shall be designed for continuous operation at temperatures from 32° to 122°F (0° to 50° C).
Have a built-in 16-key programmer with user-friendly calibration menu and language selection including English, French, Spanish, Portuguese, Russian, Norwegian and Dutch.
Have a 64 x 240 pixel backlit LCD graphics display indicating positive and negative flow rates and flow totals, calibration menu, signal strength, battery charge status, date and time.
Have flow proportional opto-isolated 0/4-20mA output rated to maximum resistive load of 620 ohms.
Have a response time of less than 500 ms and sampling resolution of 50 picoseconds.
Have adjustable Reynolds number compensation for pipe wall roughness.
Have automatic signal strength monitoring and indication.
Have a battery status indicator with automatic low battery shut off and battery overcharge protection.

D. MANUFACTURER
The instrument shall be a Portaflow PT400-A Portable Ultrasonic Flow Meter by Greyline Instruments Inc., and warranted against defects in materials and workmanship for one year.

Specifications are subject to change without notice. Please contact Greyline if you need more information or for advice in your application. We can provide quotations and refer you to the Greyline sales representative in your area.

-B- Specifications
PORTABLE ULTRASONIC FLOW METER SPECIFICATIONS
SCOPE: This specification covers a portable, ultrasonic Transit Time flow meter by Greyline Instruments, Largo, Florida / Long Sault, Ontario. This portable instrument shall provide for non-intrusive flow measurement, indication, totalizing and transmitting of the flow rate in a full pipe.
GENERAL:
Each portable Transit Time flow meter shall have the following design features and engineering specifications:
A. PERFORMANCE SPECIFICATIONS

Have an accuracy of ±2% of reading in most clean fluid applications. Have repeatability of ±0.5%.
Operate on clean liquids in full pipes with less than 2% solids or gas bubbles.
Operate on any sonic conducting pipe material such as carbon steel, stainless steel, galvanized steel, mild steel, copper, UPVC, PVDF, glass, brass and including pipes with bonded liners of epoxy, rubber or cement.
Operate on AC/DC power. Include an internal NiMH rechargeable battery with capacity for 16 hours continuous battery operation. Recharge and operate with power input of 100-260VAC 50-60Hz.

B. ULTRASONIC TRANSDUCERS

Have a dual 2 MHz transmitting/receiving, clamp-on transducers.
The transducers shall be waterproof and operate continuously at temperatures from -4°F to 275°F (-20°C to 135°C).
The transducers shall be designed to install on pipes with inside diameter ranging from 2″ to 39.37″ OD (50 mm to 1000 mm).
Have a 6 ft (2 m) long cable from the transducers to the electronics.
Shall include manufacturer’s recommended sensor coupling compound.
Shall include stainless steel sensor mounting guiderails with clamps permitting installation and removal of transducers.
Shall include a transducer test block to allow the transducers and inter-connecting cables to be functionally checked.

C. ELECTRONICS

Have a portable, hand-held ABS enclosure plus a padded carrying case containing the flowmeter, sensors and accessories. Total shipping weight shall not exceed 13 lbs (6 kg).
Electronics shall be designed for continuous operation at temperatures from 32° to 122°F (0° to 50° C).
Have a built-in 16-key programmer with user-friendly calibration menu and language selection including English, French, Spanish, Portuguese, Russian, Norwegian and Dutch.
Have a 64 x 240 pixel backlit LCD graphics display indicating positive and negative flow rates and flow totals, calibration menu, signal strength, battery charge status, date and time.
Have flow proportional opto-isolated 0/4-20mA output rated to maximum resistive load of 620 ohms.
Have a response time of less than 500 ms and sampling resolution of 50 picoseconds.
Have adjustable Reynolds number compensation for pipe wall roughness.
Have automatic signal strength monitoring and indication.
Have a battery status indicator with automatic low battery shut off and battery overcharge protection.

D. MANUFACTURER
The instrument shall be a Portaflow PT400-B Portable Ultrasonic Flow Meter by Greyline Instruments Inc., and warranted against defects in materials and workmanship for one year.
Specifications are subject to change without notice. Please contact Greyline if you need more information or for advice in your application. We can provide quotations and refer you to the Greyline sales representative in your area.

-A-规格

便携式超声波流量计技术条件
范围：本规范包括一个便携式超声波传输时间流量计，由Greyline Instruments，Largo，Florida/Long Sault，Ontario制造。
该便携式仪器应提供完整管道中流量的非侵入式流量测量、指示、汇总和传输。

概述：
每个便携式运输时间流量计应具有以下设计特点和工程规范：

A.性能规范

在大多数清洁流体应用中，读数的精确度为±2%。
重复性为±0.5%。

在含有少于2%固体或气泡的完整管道中的清洁液体上操作。

操作声波导管材料，如碳钢、不锈钢、镀锌钢、低碳钢、铜、uPVC、聚偏氟乙烯、玻璃、黄铜，包括带有环氧树脂、橡胶或水泥粘合内衬的管道。

使用交流/直流电源操作。
包括一个内部镍氢可充电电池，电池连续工作16小时。充电并在100-260Vac 50-60Hz的电源输入下运行。

B.超声波传感器

有一个双2兆赫发射/接收，夹紧传感器。

传感器应防水，并在-4°F至275°F（-20°C至135°C）的温度下连续工作。

传感器应设计为安装在内径为0.51“至4.5”OD（13 mm至115 mm）的管道上。

从传感器到电子设备有一根6英尺（2米）长的电缆。

应包括制造商推荐的传感器耦合化合物。

应包括不锈钢传感器安装导轨，带夹具，允许安装和拆卸传感器。

应包括一个传感器测试块，以便对传感器和连接电缆进行功能检查。

C.电子

有一个便携式的，手持的ABS外壳和一个装有流量计，传感器和附件的带衬垫的手提箱。总装运重量不得超过13磅（6千克）。

电子设备应设计为在32°至122°F（0°至50°C）的温度下连续运行。

有一个内置的16键程序员，具有用户友好的校准菜单和语言选择，包括英语、法语、西班牙语、葡萄牙语、俄语、挪威语和荷兰语。

有一个64 x 240像素的背光LCD图形显示屏，显示正、负流量和总流量、校准菜单、信号强度、电池充电状态、日期和时间。

具有流量比例光隔离0/4-20mA输出，额定最大电阻负载为620欧姆。

响应时间小于500毫秒，采样分辨率为50皮秒。

具有可调雷诺数补偿管壁粗糙度。

具有信号强度自动监测和指示功能。有一个电池状态指示灯，自动关闭低电池和电池过充电保护。

D.制造商

仪器应为Greyline Instruments Inc.生产的PortalFlow PT400-A便携式超声波流量计，并保证一年内不会出现材料和工艺缺陷。

规格如有更改，恕不另行通知。如果您在申请中需要更多信息或建议，请联系Greyline。我们可以提供报价，并向贵公司所在地区的Greyline销售代表咨询。

-B-规格

便携式超声波流量计技术条件
范围：本规范包括一个便携式超声波传输时间流量计，由Greyline Instruments，Largo，Florida/Long Sault，Ontario制造。
该便携式仪器应提供完整管道中流量的非侵入式流量测量、指示、汇总和传输。

一般：
每个便携式运输时间流量计应具有以下设计特点和工程规范：

A.性能规范

在大多数清洁流体应用中，读数的精确度为±2%。
重复性为±0.5%。

在含有少于2%固体或气泡的完整管道中的清洁液体上操作。

操作声波导管材料，如碳钢、不锈钢、镀锌钢、低碳钢、铜、uPVC、聚偏氟乙烯、玻璃、黄铜，包括带有环氧树脂、橡胶或水泥粘合内衬的管道。

使用交流/直流电源操作。
包括一个内部镍氢可充电电池，电池连续工作16小时。充电并在100-260Vac 50-60Hz的电源输入下运行。

B.超声波传感器

有一个双2兆赫发射/接收，夹紧传感器。

传感器应防水，并在-4°F至275°F（-20°C至135°C）的温度下连续工作。

传感器应设计为安装在内径为2“至39.37”OD（50 mm至1000 mm）的管道上。

从传感器到电子设备有一根6英尺（2米）长的电缆。

应包括制造商推荐的传感器耦合化合物。

应包括不锈钢传感器安装导轨，带夹具，允许安装和拆卸传感器。

应包括一个传感器测试块，以便对传感器和连接电缆进行功能检查。

C.电子

有一个便携式的，手持的ABS外壳和一个装有流量计，传感器和附件的带衬垫的手提箱。总装运重量不得超过13磅（6千克）。

电子设备应设计为在32°至122°F（0°至50°C）的温度下连续运行。

有一个内置的16键程序员，具有用户友好的校准菜单和语言选择，包括英语、法语、西班牙语、葡萄牙语、俄语、挪威语和荷兰语。

有一个64 x 240像素的背光LCD图形显示屏，显示正、负流量和总流量、校准菜单、信号强度、电池充电状态、日期和时间。

具有流量比例光隔离0/4-20mA输出，额定最大电阻负载为620欧姆。

响应时间小于500毫秒，采样分辨率为50皮秒。

具有可调雷诺数补偿管壁粗糙度。

具有信号强度自动监测和指示功能。

有一个电池状态指示灯，自动关闭低电池和电池过充电保护。

D.

制造商

仪器应为Greyline Instruments Inc.生产的便携式流量PT400-B超声波流量计，并保证一年内不会出现材料和工艺缺陷。
规格如有更改，恕不另行通知。如果您在申请中需要更多信

SCOPE: This specification covers a clamp-on, ultrasonic Doppler flow meter, as manufactured by Greyline Instruments Inc., Largo, Florida / Long Sault, Ontario. The meter shall provide for non-intrusive velocity or flow measurement, direction indication, and transmitting of the flow rate in a full pipe.

1. PERFORMANCE SPECIFICATIONS

The flow meter shall operate with a single-head flow sensor mounted externally on any contiguous pipe material that conducts sound including but not limited to: carbon steel, stainless steel, ductile iron, cement lined ductile iron, copper, FRP, PVC, or ABS pipe from 1/2″ to 180″ (12.5 mm to 4.5 m) ID.

Measure and indicate flow rates from +0.1 to +40 ft/sec and -0.1 to -40 ft/sec (+0.03 to +12.2 m/sec and -0.03 to -12.2 m/sec) with accuracy of ±2% of reading or ±0.1 ft/sec, whichever is greater, on liquids with entrained particles or gases of 100 microns or larger and minimum concentrations of 75 ppm.

1. TRANSDUCER (FLOW SENSOR)

The flow sensor shall be single-head, ultrasonic in a stainless steel housing. It shall be installed on the outside of a pipe without interrupting flow. The sensor shall be capable of continuous operation at temperatures from -40°F to 300°F (-40°C to 150°C), and able to withstand accidental submersion pressures to 10 psi. Manufacturer’s recommended coupling compound and stainless steel mounting clamp shall be included.

Shall include 25 ft (7.6m) sensor cable, shielded coaxial pair.

Shall be capable of extending sensor cable up to 500 ft (152m) without requirement for operator adjustment.

Shall be transformer isolated and designed to meet intrinsic safety requirements. Shall be designed and CE tested for maximum industrial noise rejection.

Sensor shall be rated Non-incendive for Class I, Division 2, Groups A, B, C & D locations.

1. TRANSMITTER

The transmitter indicator shall be housed in a watertight and dust tight NEMA4X (IP 66) polyester and polycarbonate enclosure with a gasketed shatter proof window, suitable for wall mounting.

Flow meter electronics shall be designed to operate at temperatures from -10°F to 140°F (-23°C to 60°C). Electronic circuits are interchangeable with other flow meters having the same model number. The transmitter circuit and calibration frequency standard shall be crystal controlled. The transmitter shall be powered by 100-240VAC 50/60Hz requiring less than 10 VA.

The transmitter shall include a built-in 5-Key programming system with operator selection of parameters through visual prompts from a menu system. Systems requiring programming by parameter codes or external calibrators shall not be accepted.

The 4-20mA output shall be flow proportional and isolated, with programmable zero and full scale offsets. Maximum resistive load shall be 1000 ohms.

Shall include noise suppression circuitry to filter electrical interference, and shall be tested for industrial noise immunity for CE certification, European Directive 2014/30/EU.

Shall be certified to UL/CSA/EN 61010-1.

Have a white, backlit matrix LCD display indicating flow rate and total in user-selected engineering units, relay states, and important diagnostics like signal strength.

Have 2 SPDT control relays rated 5 ampere. Relays shall be programmable for flow proportional pulse output, or as flow rate alarms with separate ON/OFF set points.

Shall display and totalize forward and reverse flow.

Have a built-in 26 million point data logger with USB output to flash drive or mass storage device. Includes Windows software for plotting and exporting.

Electronics shall be modular and field replaceable by means of plug-in circuit boards. The instrument shall detect and load software menus automatically for field-installed options.

1. ADDITIONAL FEATURES FOR INSERTION IN SPECIFICATION AS REQUIRED:

Sensor shall be rated intrinsically safe to Class I, Groups C,D; Class II, Groups E,F,G; Class III with Intrinsic Safety Barriers.

Sensor cable shall be 50 ft (15m) length shielded coaxial pair.

Sensor cable shall be 100 ft (30 m) length shielded coaxial pair.

Have a Sensor Cable Junction Box and up to 500 ft (152m) length total shielded coaxial pair cable installed in conduit for mechanical protection.

Have a thermostatically controlled AC-powered enclosure heater for condensation protection in locations with temperature below -10°F (-23°C).

Have power input of 9-32VDC, 10 Watts maximum.

Transmitter shall have serial communications for flow rate, total, previous day average flow rate, previous day volume total, and diagnostic values. Field selectable between Modbus? RTU via RS-485 or HART (Highway Addressable Remote Transducer).

1. MANUFACTURER

The instrument shall be a Model DFM 6.1 Doppler Flow Meter as manufactured by Greyline Instruments Inc., and warranted against defects in materials and workmanship for one year.

Please contact Greyline if you need more information or for advice in your application. We can provide quotations and refer you to the Greyline sales representative in your area.

在没有水槽或堰的情况下测量明渠流量。面积速度流量计连续测量水位和流速，以计算明渠或管道中的流量。
超声波传感器安装在管道或通道的底部。为了测量水位，传感器发送超声波脉冲，这些脉冲通过水传播并从液体表面反射出来。仪器精确测量回声返回传感器所需的时间。根据水中声速，测量声级精度为±0.25%。
用连续注入水中的超声多普勒信号测量流速。这种高频声音（640kHz）从悬浮在液体中的颗粒或气泡反射回传感器。如果流体在运动，回声以与流速成比例的变化频率返回。利用该技术，仪器测量流速的精度为±2%。
greyline面积流速流量计工作在部分满管和溢流管、矩形、梯形和蛋形通道中。
可选-单独的液位和速度传感器
一个单独的向下看超声波传感器可用于高充气或湍流应用。它通过将超声波脉冲通过空气传输到液体表面来测量液位，精度为±0.25%。在水位传感器的基础上，采用水下多普勒速度传感器对水位进行测量。

Doppler flow meters measure flow from outside a pipe with a clamp-on sensor. Greyline Doppler meters continuously transmit high frequency sound (640 kHz) that travels through the pipe wall and into the flowing liquid. Sound is reflected back to the sensor from solids or bubbles in the fluid. If the fluid is in motion, the echoes return at an altered frequency proportionate to flow velocity. Doppler flow meters continuously measure this frequency shift to calculate flow.
Measure Flow of dirty or aerated Liquids from Outside a Pipe
The Doppler effect was first documented in 1842 by Christian Doppler, an Austrian physicist. We hear everyday examples of Doppler: the sound of a train whistle changing pitch as it passes by, or the exhaust noise from a race car as it speeds past our location.
The Doppler technique only works on liquids which contain solids or gas bubbles to reflect its signal. These are “difficult” liquids that may damage regular flow meters: slurries, sludge, wastewater, abrasives, viscous and corrosive chemicals. Because the sensor mounts on the outside of the pipe, there is no pressure drop and no obstruction to flow.
For best performance Doppler sensors should be mounted away from turbulence creating devices like pipe elbows and tees, and away from velocity increasing devices like controlling valves and pumps. Typical accuracy is ±2% of full scale. Doppler instruments include a clamp-on ultrasonic sensor, connecting cable and an electronics enclosure which can be mounted at a convenient location nearby (within 500 ft / 152 m). Sensors can be rated intrinsically safe for mounting in hazardous-rated locations.

Measure open channel flow without a flume or weir An Area-Velocity Flow Meter continuously measures both Level and Velocity to calculate flow volume in an open channel or pipe.
The ultrasonic sensor is installed at the bottom of a pipe or channel. To measure water level the sensor transmits ultrasonic pulses that travel through the water and reflect off the liquid surface. The instrument precisely measures the time it takes for echoes to return to the sensor. Based on the speed of sound in water, the level is measured with accuracy of ±0.25%.
Flow velocity is measured with an ultrasonic Doppler signal continuously injected into the water. This high frequency sound (640 KHz) is reflected back to the sensor from particles or bubbles suspended in the liquid. If the fluid is in motion, the echoes return at an altered frequency proportionate to flow velocity. With this technique the instrument measures flow velocity with accuracy of ±2%.
Greyline Area-Velocity Flow Meters work in partially full and surcharged pipes, rectangular, trapezoid and egg-shaped channels.
Optional – Separate Level and Velocity Sensors
A separate down-looking ultrasonic sensor can be used for highly aerated or turbulent flow applications. It measures level by transmitting ultrasonic pulses through the air to the liquid surface with accuracy of ±0.25%. Along with the level sensor, a submerged Doppler velocity sensor is used to measure the water velocity.