VP VPFlowScope M User Manual

VPFlowScope M

VPINSTRUMENTS.COM

MAN-VP-MPRO-UK-1602 Date:20-10-2016

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Creation date: 20-10-2016 in Delft

VPFlowScope M

Publisher

Van Putten Instruments BV Buitenwatersloot 335 2614 GS Delft The Netherlands

This document is available in: English, English (UK)

3Contents

Table of Contents

Warning - Read this first

Introduction

Product overview

................................................................................................................................... 7

VPFlowScope M transmitter

................................................................................................................................... 8

VPSensorCartridge

................................................................................................................................... 9

Safety system

................................................................................................................................... 9

Configuration

Quick start

Measurement

................................................................................................................................... 11

Flow

................................................................................................................................... 11

Pressure

................................................................................................................................... 11

Temperature

................................................................................................................................... 11

Totalizer

Mechanical installation

................................................................................................................................... 13

Installation point

................................................................................................................................... 15

Piping table

................................................................................................................................... 16

Safety system

................................................................................................................................... 17

Assembling and installing the instrument

................................................................................................................................... 19

Replacing the VPSensorCartridge

Connectivity & communication

................................................................................................................................... 22

LEDS

................................................................................................................................... 22

4..20mA output

................................................................................................................................... 23

Pulse output

................................................................................................................................... 24

RS485

................................................................................................................................... 24

USB

................................................................................................................................... 24

Ethernet

................................................................................................................................... 25

Internal web server

................................................................................................................................... 25

Modbus TCP

................................................................................................................................... 25

Display

.......................................................................................................................................................... 26Display

.......................................................................................................................................................... 26Display status icons

.......................................................................................................................................................... 26Custom units

.......................................................................................................................................................... 27Keypad

.......................................................................................................................................................... 27Menu

................................................................................................................................... 30

Data logger

.......................................................................................................................................................... 30Cyclic mode

VPFlowScope M4

.......................................................................................................................................................... 30Multi session mode

Alarm

Modbus

Electrical connections

................................................................................................................................... 36

4..20mA

................................................................................................................................... 37

Pulse

................................................................................................................................... 38

Alarm

................................................................................................................................... 38

RS485

................................................................................................................................... 40

Ethernet

VPStudio software

Exchanging VPSensorCartridges

Specifications transmitters

Specifications VPSensorCartridges

Order information and accessories

................................................................................................................................... 45

Transmitter

................................................................................................................................... 45

VPSensorCartridge

................................................................................................................................... 45

Accessories

Appendix A - Underwriters Laboratories (UL)

Appendix B - Federal Communications Commission (FCC) Statement

Warning - Read this first 5

1 Warning - Read this first

Compressed air can be dangerous! Please familiarize yourself with the forces under pressurized conditions. Respect the local guidelines and regulations for working with pressurized equipment.

Gas flow through pipes follows certain physical laws. These physical laws have serious consequences for the installation requirements. Familiarize yourself with the basic physical laws of flow measurement, to make sure that the product is installed correctly. Always make sure that upstream length, downstream length, flow, pressure, temperature and humidity conditions are within specifications.

Precision instruments need maintenance. Check your flow meter regularly and make sure it remains clean. When polluted, gently clean the sensor using de-mineralised water or cleaning alcohol.

Not intended for fiscal metering or billing. Our flow meters are not certified for fiscal metering. Laws on fiscal metering and billing may vary per country or state.

Do not overestimate the results. VPInstruments does not take any responsibility for the correctness of measurement results under field conditions. The practical measurement uncertainty of a flow meter in the field

may vary, depending on how well it is installed, due to the nature of gas flow. The piping table provides guidelines on how to optimize the field accuracy. Our products are not intended to be used as a single means to determine compressor capacity.

Do not open the device. Our instruments are assembled with high precision. Opening this device is dangerous and may destroy the instrument. Warranty is

voided when you open the instrument.

Feedback leads to product improvement. Please share your experience with us, as we are continuously improving our products in our commitment to quality, reliability and ease of use. Let us know via sales@vpinstruments.com!

VPFlowScope M6

2 Introduction

Congratulations! You purchased the easiest to use and most complete compressed air measurement tool in the world. With the VPFlowScope M, you can monitor flow, pressure,

temperature, and total air consumption, simultaneously. The optional data logger enables you to record all 4 parameters.

With the introduction of the VPFlowScope M, re-calibration becomes history. Unlike traditional flow meters, the VPFlowScope M does not require traditional re-calibration. Instead, the VPFlowScope M consists of a transmitter in combination with the patented VPSensorCartridge which reduces recalibration to a simple exchange.

But there is more to the VPFlowScope M:

Three in one: flow, pressure and temperature simultaneously Wide measurement range (1:300) 2% reading accuracy on flow Ultra compact size and low weight Optional direction measurement Optional display Optional data logger

Great products deserve great user manuals. We have done our best to make this user manual as complete as possible. New users, please read it carefully to familiarize yourself with our products. Experienced users can check out the Quick start chapter.

Check the packaging box for any inconsistencies. Should there be any shipping damage, notify the local carrier. At the same time a report should be submitted to Van Putten Instruments BV, Buitenwatersloot 335, 2614 GS DELFT, The Netherlands.

This manual is dedicated to:

VPFlowScope M transmitter: VPM.T001.DXXX VPFlowScope M VPSensorCartridge: VPM.R150.P35X.PN10

VPStudio software version 2.0.5 Transmitter firmware version 1.1.0 VPSensorCartridge firmware version 1.0.1

Do you like our products and this user manual? Tell others! Do you miss something? Let us know via sales@vpinstruments.com!

Introduction 7

3 Product overview

3.1 VPFlowScope M transmitter

Meet the transmitter, the 'brains' of the VPFlowScope M. The transmitter is one part of the VPFlowScope M which needs to be combined with a VPSensorCartridge and a safety system. The transmitter features various outputs. Modbus, 4..20 mA, pulse, USB, Ethernet, alarm are all standard. The optional display and data logger offer additional functionality for visualisation and data logging.

The transmitter is available in 3 configurations to fit every application. The available models are listed in the table below. The transmitter is to be used with the VPSensorCartridge. There are two VPSensorCartridges available, both having their own unique features. Inside the VPSensorCartridge are sensors that perform the actual measurement.

When mated to a VPSensorCartridge, the transmitter can be rotated 360 degree. This enables you to align the display for every orientation. Turn the locking ring loose when rotating the display.

Available transmitter models

Order Code

4..20 mA/ Pulse/ Alarm

RS485

USB

Ethernet

Display

Data logger

VPM.T001.D000

VPM.T001.D010

VPM.T001.D011

Available models on day of printing

VPFlowScope M8

3.2 VPSensorCartridge

The VPSensorCartridge includes all sensors to measure flow, pressure and temperature simultaneously. It also includes the calibration characteristics for all available sensors. This makes it possible to exchange the VPSensorCartridge between transmitters or to replace it when calibration is required.

All VPSensorCartridges use a proprietary interface. Therefore every type of VPSensorCartridge can be connected to every model of transmitter. See chapter 3.1 for all available transmitters.

The VPSensorCartridge has a flow direction indicator in the shape of an arrow that points in the positive direction. The indicator can be used for proper alignment.

Available VPSensorCartridge models

Order Code

Flow

Temperature

Pressure

Bi-directional

VPM.R150.P350.PN10

VPM.R150.P351.PN10

Available models on day of printing

Product overview 9

3.3 Safety system

Installation under pressure can be dangerous. Make sure that you understand the safety system before installing the VPFlowScope M.

The safety system is specially designed for the VPFlowScope M. When the VPSensorCartridge is in the compression fitting and the safety cable is attached with the locking ring fully tightened, the probe can never exit the compression fitting due to the matching length of the cable. When the VPSensorCartridge is installed on the right depth, the safety cable can be strained and locked. The complete safety system is tested and certified for safety. Instructions on how to assemble the safety system can be found in chapter 6 mechanical installation.

1. Compression fitting: 0.5 inch with Teflon ferrule

2. Safety plate: Used to connect fitting and safety

system

3. Auto brake: The safety chain can be slide through

the auto brake system. Moving upwards is only possible when the safety lock is pushed downwards

4. Safety lock: This nut can be used to lock or unlock

the safety release. Push down the lock to release the safety chain

5. Safety chain: The safety chain can be attached to

the VPSensorCartridge

3.4 Configuration

The VPFlowScope M needs only one step to be ready for basic operation. It needs to know the exact inner pipe diameter for accurate measurement, wrong inner diameter will lead to very significant misreadings. The pipe diameter can be programmed with the keypad on the display

module, via the built-in Web interface or with the VPStudio configuration software. This software suite is also used for configuration of the outputs and data logger. This software can be downloaded from our website. www.vpinstruments.com/downloads. The exact inner diameter can be measured using a wall thickness gauge, ask us for availability.

The default units are set to SI. For read out in Imperial units, use the keypad to change the units via the menu. Go to menu->settings->display->rows.

VPFlowScope M10

4 Quick start

This chapter contains the basic steps to start using your VPFlowScope M. Additional information on all subjects can be found in the next chapters.

1. Unpack

Unpack the box and check if all items are there and in good shape.

2. Apply power

Connect the unit to a DC power source (12..24 VDC). See chapter 7 electrical connections.

3. Mechanical installation

Find the best point of installation for this product. Make sure that the process conditions are within the specifications of the flow meter and the upstream and downstream straight pipe lengths are respected

For installation of the VPFlowScope M, an insertion point needs to be created. A socket with internal 1/2 inch thread is required

A ball valve with a minimum size of 0,5 inch female BSP or NPT process connection should be in place

Assemble the VPFlowScope M including safety system and mount it on top of the ball valve Open the valve and insert the probe The sensor needs to be in the middle of the pipe for diameters larger then 2 inch. See chapter

6.1 installation point

Tighten the compression fitting according to instruction Pull on the safety chain to strain it and turn the safety lock clockwise to lock it

See chapter 6 mechanical installation for more detailed information

4. Electrical installation

4.1 Permanent installation

Connect a cable with 5 Pin M12 connector to the transmitter. The cable can be connected to VPVision, a central data acquisition / building management system or data logger via Modbus RTU (TCP), 4..20mA or pulse. Connect the 4 Pin M12 connector to the transmitter and the other side to a laptop or router for an Ethernet connection.

Apply 12..24 VDC to power up the device. Use a Class II power supply (less than 2 Amps). If a display is present, it will light up when power is applied.

4.2 Temporary installation

Use a 24 VDC power supply with M12 connector to power the device.

See chapter 10 electrical connections for more information.

5. Configure the transmitter

For correct measurement, the diameter should be programmed into the instrument.

The quickest way: Program the inner pipe diameter via the display. Go to menu->settings>diameter

Alternative method: The diameter can also be programmed through an Ethernet connection using the internal web server and direct USB connection to the transmitter using the VPStudio software

Advanced settings: Use the built in web server or VPStudio to set the output parameters for networking, Modbus, pulse, alarm and current outputs

6. Data recording

When the transmitter has an integrated data logger, a data log session can be started pressing the record button. The data logger uses 5 second intervals for all measurement parameters by default. The data logger can also be put in cyclic mode where it will always record data using 1 second intervals for all parameters. Changing the mode and intervals can be done using the display or with the VPStudio software.

Quick start 11

5 Measurement

For all parameters the update interval is 1 second. Within this second, multiple samples are taken and averaged to provide a stable and reliable output.

5.1 Flow

The VPSensorCartridge uses our proprietary insertion type thermal mass flow sensor. There is no bypass flow, which results in a high robustness and less sensitivity for dirt or particles. The flow sensor is directly temperature compensated. The flow reading is under normalized conditions (DIN

1343).

The sensor response signal is directly related to the mass flow rate and can be described by the following formula:

Vout = k *λ* ρ * v * (Ts-Tg)

Vout = output voltage k = sensor (geometrical) constant

λ = thermal conductivity of the gas ρ = density of the gas

v = actual velocity in m / sec Ts = sensor temperature Tg = gas temperature

The optional bi-directional sensitivity is shown in the picture on the right. In bi-directional mode the negative flow value will show up as a minus sign.

5.2 Pressure

The VPSensorCartridge features a built-in gauge pressure sensor. Check specifications for details. The sensor membrane can handle media which are compatible with glass, silicon, stainless steel, Sn/Ni, plating and An/Ag solder.

5.3 Temperature

The built in temperature sensor measures the compressed air / gas temperature. At low flow rates between zero flow and 10 mn/sec, the temperature sensor may heat up itself due

to the heated flow sensor element. This will result in higher read out for temperature.

Temperature compensation effects: The flow sensor is compensated dynamically for changes in gas temperature. When exposed to quick temperature changes or large temperature changes (for example taking the unit from outdoor to indoor during winter time, or when mounted downstream of a heat regenerated drier) the temperature compensation may lag behind, which may result in significant measurement errors.

5.4 Totalizer

The totalizer keeps track of the total consumed amount of compressed air in normal cubic meters, normal liters per minute or in (M)(M)SCF depending on which unit you choose to read out. The refresh interval is 1 second: Actual totalizer data will be available on the display and via the Modbus interface. The totalizer value is written to it's internal memory with an interval of 15 minutes. A

VPFlowScope M12

power failure may result in maximum 15 minutes of totalizer data loss.

The transmitter features 2 totalizers, plus a combined totalizer. The first totalizer counter will count up all positive flow, the second counter will count up all negative flow. The sum of these two totalizer values is shown on the display and can also be read out via Modbus. The display will show totalizer values up to 99.999.999,9 and will then become 0,0 independent of the taken unit. The totalizer will not be cleared and higher values will be available via Modbus and VPStudio. Via Modbus, all three totalizers are available. See chapter 9 for Modbus registers.

The totalizers can only be reset to zero, and will be reset all together. It's not possible to set them to any different value.

Measurement 13

6 Mechanical installation

6.1 Installation point

The installation point is crucial for a correct measurement. Sources of error can be: installation effects, unknown flow profiles, swirls, pressure and temperature effects, humidity effects, oscillations in the flow, etc. To ensure the highest possible accuracy of flow measurement, the installation and piping instructions must be followed. Therefore read this paragraph carefully.

Take into account:

Choose a location which is accessible, which allows access for wiring and maintenance activities Meet the specifications of the VPFlowScope M. When the specifications are not met, for instance

the pressure or temperature level is too high; this will cause inaccurate flow measurement and can even damage your flow meter

Do not apply mechanical stress on the VPFlowScope M

Avoid:

Excessive heat, check the temperature specifications Corrosive atmosphere where possible Electrical problems (high voltage/ high power) Mechanical vibration and danger (walking bridges, fork lift trucks) Any environmental source of potential error

Stop: These devices are for use with Air, Nitrogen, Argon, Helium, Carbon Dioxide and other non hazardous and non-corrosive gases

Prepare the installation

The VPFlowScope M can be inserted through a tap with 1/2 inch female thread. For installation under pressurized conditions a VPInstruments hot tap saddle can be used.

Use a 1/2" full bore ball valve to insert and retract the VPFlowScope M when you want.

Warning: Make sure that the hole is at least 16 mm | 0.63 inch, and completely clear for insertion. A too small hole will damage the probe or can block the probe when the entering the pipe.

VPFlowScope M14

Installation procedure

Insertion depth Generally the insertion depth of the VPFlowScope M is 0.5 times the inner pipe diameter, where the bottom of the sensor tip must be in the middle of the pipe (see picture).

Position Install the VPFlowScope M upwards in an angle between 1 and 2 o'clock (see picture). Never install the instruments upside down.

The VPSensorCartridge has a flow direction indicator, this also indicates the alignment of the instrument. A second indicator can be found on the safety system. Make sure it points in the right flow direction. Alignment “by the eye” is sufficient.

Info: A ruler can be used to align the instrument. It can be placed on the flat area where the direction indicator is located.

Exception

Between pipe sizes of 1” and 2”: be aware that the field accuracy is +/- 10%; installation errors are bigger. The insertion depth between DN25 and DN65 is also different. The VPFlowScope M probe has to be inserted almost completely to the bottom of the pipe or else the temperature sensor of the VPFlowScope M probe itself is outside the flow path. The sensor tip will not be in the middle of the pipe any more. The measurement value is automatically corrected for small diameters.

Mechanical installation 15

6.2 Piping table

Check the piping table below for your application. The table shows the amount of length upstream or downstream depending on the installation. If applicable in front of the meter, use given upstream

length. If applicable in behind the meter, use given downstream length. Gas flow in pipes follows certain rules, which must be observed for optimal measurement results. For some exceptions the

upstream length needs to be longer, or can be shorter.

If possible, you can always choose a longer upstream length, as these are minimum values. The up- and downstream lengths are used industry wide as guidelines, but will never be a guarantee for obtaining the “true value”.

Piping table

The following table provides a guideline for proper distances between upstream or downstream objects and the VPFlowScope M. The upstream length is the length between the last non-straight object and the VPFlowScope M. If the upstream length is straight, and the distortion is downstream of the VPFlowScope M, you can use the column "downstream length" as a guideline. In very complex situations, with multiple up- and downstream objects, you should consider another location. This table is a practical guideline and is not exact science. Practical situations can have multiple sources of distortion, therefore VPInstruments does not take any responsibility for the correctness.

Picture

Description

Upstream length

Downstream length

Effect

Single elbow

30 * D

10 * D

Distorted flow profile

Complex feed-in situation (header)

40 * D

10 * D

Flow profile will be distorted

Double elbow, multiple elbows following each other

40 * D

10 * D

Distorted profile + swirl

Diameter change from small to large (gradual or instant)

40 * D15 *D

Jet shaped flow

+ 33 hidden pages

VP VPFlowScope M User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual