BRONKHORST ES-FLOW User manual

Doc. no.: 9.17.116B Date: 19-12-2017
ATTENTION
Pleaseread this Instruction Manual carefully beforeinstalling and operating theinstrument.
Not following the guidelines could resultin personalinjury and/or damageto the equipment.
ES-FLOW™
Ultrasonic Volume Flow Meter/Controller
Instruction Manual

Bronkhorst®
Instruction Manual ES-FLOW™ 9.17.116B2
Disclaimer
The information in this manual has been reviewed and is believed to be wholly reliable. No responsibility, however, is
assumed for inaccuracies. The material in this manual is for information purposes only.
Copyright
© 2017 Bronkhorst High-Tech B.V.
All rights reserved. This documentation is protected by copyright.
Subject to technical and optical changes as well as printing errors. The information contained in this document is subject to
change at any time without prior notification. Bronkhorst High-Tech B.V. reserves the right to modify or improve its
products and modify the contents without being obliged to inform any particular persons or organizations. The device
specifications and the contents of the package may deviate from what is stated in this document.
Symbols
Important information. Disregarding this information could cause injuries to people or damage to the instrument or
installation.
Helpful information. This information will facilitate the use of the instrument.
Additional info available on the internet or from your local sales representative.
Receipt of equipment
Check the outside package box for damage incurred during shipment. If the box is damaged, then the local carrier must be
notified at once regarding his liability, if so required. At the same time a report should be submitted to your local sales
representative.
Carefully remove the equipment from the box. Verify that the equipment was not damaged during shipment. Should the
equipment be damaged, then the local carrier must be notified at once regarding his liability, if so required. At the same
time a report should be submitted to your local sales representative.
Check the packing list to ensure that you received all of the items within the scope of delivery.
Do not discard spare or replacement parts with the packaging material and inspect the contents for damage.
Refer to Removal and return instructions about return shipment procedures.
Equipment storage
The equipment should be stored in its original package in a cupboard warehouse or similar. Care should be taken not to
subject the equipment to excessive temperatures or humidity.

Bronkhorst®
Instruction Manual ES-FLOW™9.17.116B 3
Warranty
Bronkhorst® products are warranted against defects in material and workmanship for a period of three years from the date
of shipment, provided they are used in accordance with the ordering specifications and not subject to abuse or physical
damage. Products that do not operate properly during this period may be repaired or replaced at no charge. Repairs are
normally warranted for one year or the balance of the original warranty, whichever is the longer.
See paragraph 9 of the Conditions of sales:
http://www.bronkhorst.com/files/corporate_headquarters/sales_conditions/en_general_terms_of_sales.pdf
The warranty includes all initial and latent defects, random failures, and indeterminable internal causes.
It excludes failures and damage caused by the customer, such as contamination, improper electrical hook-up, physical shock
etc.
Re-conditioning of products primarily returned for warranty service that is partly or wholly judged non-warranty may be
charged for.
Bronkhorst High-Tech B.V. or affiliated company prepays outgoing freight charges when any part of the service is
performed under warranty, unless otherwise agreed upon beforehand, however, if the product has been returned collect to
our factory or service center, these costs are added to the repair invoice. Import and/or export charges, foreign shipping
methods/carriers are paid by the customer.
General safety precautions
This product is intended for use by qualified personnel who recognize shock hazards and are familiar with the safety
precautions required to avoid possible injury. Read the operating information carefully before using the product.
Before operating, make sure the line cord is connected to a properly grounded power receptacle. Inspect the connecting
cables for cracks or breaks before each use.
The module and accessories must be used in accordance with their specifications and operating instructions, otherwise the
safety of the equipment may be impaired.
If required, replace fuses with the same type and rating for continued protection against fire hazard.
Opening of the equipment is not allowed. There are no repairable parts inside. In case of a defect please return the
equipment to Bronkhorst High-Tech B.V..
One or more warning signs may be present on different parts of the product. These signs have the following meaning:
Consult the instruction manual for handling instructions
Surface may get hot during operation
Shock hazard; electrical parts inside
To maintain protection from electric shock and fire, replacement components must be obtained from Bronkhorst. Standard
fuses, with applicable national safety approvals, may be used if the rating and type are the same. Other components that are
not safety related may be obtained from other suppliers, as long as they are equivalent to the original component. Selected
parts should be obtained only through Bronkhorst, to maintain accuracy and functionality of the product. If you are unsure
about the relevance of a replacement component, contact Bronkhorst for information.

Bronkhorst®
Instruction Manual ES-FLOW™ 9.17.116B4

Bronkhorst®
Instruction Manual ES-FLOW™9.17.116B 5
Table of contents
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Introduction 1
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71.1 Scope of this manual
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71.2 Intended use
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71.3 Product description
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81.4 Other documents
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91.5 Model key
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10Customized I/O options 1.5.1
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Installation 2
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. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122.2 Mounting
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Operation 3
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. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 153.2 First use
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 153.3 User interface
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16Main screen functions 3.3.1
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16Unlocking buttons 3.3.1.1
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16Selecting display information 3.3.1.2
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16Selecting screen area 3.3.1.3
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. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17Resetting counter 3.3.1.5
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18Resetting alarm 3.3.1.6
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18Menu navigation 3.3.2
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19Password protection 3.3.2.1
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19Editing string 3.3.2.2
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20Editing list selection 3.3.2.3
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20Settings menu 3.3.3
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. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22Counter 3.3.3.3
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. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23Setup 3.3.3.5
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. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25Security menu 3.3.4
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26Changing password 3.3.4.1
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26Resetting password 3.3.4.2
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27LED indications 3.3.5
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. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 303.4 Digital parameters
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30General 3.4.1
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. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33Default control mode 3.4.2.1
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Instruction Manual ES-FLOW™ 9.17.116B6
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. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Maintenance 4
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 444.1 General
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 444.2 Calibration
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Troubleshooting and service 5
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 455.1 Common issues
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 475.2 Service
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Removal and return instructions 6

Bronkhorst®
Instruction Manual ES-FLOW™9.17.116B 7
1Introduction
1.1 Scope of this manual
This manual covers general product information, installation and operating instructions and troubleshooting tips for the
ES-FLOW™ digital volume flow meter/controller for liquids.
1.2 Intended use
The ES-FLOW™ is designed to accurately measure and control low volume flows with high precision and a limited pressure
drop. A wide range of liquids can be measured independent of fluid density, temperature and viscosity.
The end user is considered to be familiar with the necessary safety precautions, and to comply with the appropriate
protective measures as described in the Material Safety Data Sheets of the media to be used in the system (if applicable).
Responsibility for the use of the equipment with regard to suitability, intended use, cleaning and corrosion resistance of the
used materials against the metered media lies solely with the end user.
Bronkhorst High-Tech B.V. cannot be held liable for any damage resulting from improper use or use for other than the
intended purpose.
1.3 Product description
The ES-FLOW™ is a precise and compact volume flow meter with control function for liquids, based on a novel ultrasonic
technology.
Measuring principle
Measuring is done in a straight tube, without obstructions or dead spaces. Multiple transducers measure both the surface
acoustic wave and the transit time through the media. All up- and down-stream combinations are recorded and processed
in nanoseconds. The sound wave velocity and the surface area are recalculated to the volume flow value. This ultrasonic
measuring method is fast, accurate and inherently bi-directional.
Application
The combination of a straight sensor tube with zero dead volume, self-drainability, orbital TIG-welding and hygienic
connections, makes the ES-FLOW especially suitable for hygienic applications. For non-hygienic applications, the instrument
can be equipped with compression type fittings. Wetted parts are made of stainless steel, the housing has a high ingress
protection rating.

Bronkhorst®
Instruction Manual ES-FLOW™ 9.17.116B8
Operation
The ES-FLOW™ can be operated with the integrated readout and control unit, as well as
digitally, via RS232 or fieldbus (Modbus, FLOW-BUS, PROFIBUS DP or DeviceNet™), or in
analog mode. The readout and control unit has a capacitive touchscreen with a TFT
display. The fluid temperature can be read out as a secondary output. An on-board PID
controller can be used to drive a control valve or pump, establishing a complete, compact
control loop.
Multi-range
The ES-FLOW™ offers multi-range functionality: factory calibrated ranges can be re-
ranged to a different full scale range. Because of the extremely high linearity of the sensor, this does not affect the original
accuracy specifications.
The instrument comes with a calibration certificate for all supported full scale ranges. The actual full scale of the instrument
is set to a value as ordered.
1.4 Other documents
The ES-FLOW™ comes with all necessary information for basic operation and maintenance. This section lists all
documentation that is relevant to the ES-FLOW™. Some documents are not necessarily part of the scope of delivery, but
can be provided on request. Documents with a check mark in the column labeled 'www' can be downloaded from
http://www.bronkhorst.com/en/downloads.
Type
Document
Document no.
www
General documentation
EU Declaration of Conformity
9.06.021

Calibration certificates
n/a
Technical documentation
ES-FLOW Brochure
9.60.069

Dimensional drawing ES-FLOW
7.15.194

Hook-up diagram ES-FLOW, Optional bus and I/O
configurations
9.16.196

Some parts of this manual refer to fieldbus specific features of the instrument. This may concern relevant hook-up
diagrams, as well as a detailed description of the digital interface and how to access the available parameters. The
information referred to can be found in the following documents:
Interface type
Document
Document no.
www
DeviceNet™
Instruction manual DeviceNet™ interface
9.17026

Hook-up diagram ES-FLOW instruments DeviceNet™
9.16.184

FLOW-BUS
Instruction manual FLOW-BUS interface
9.17.024

Hook-up diagram ES-FLOW instruments FLOW-BUS
9.16.186

Modbus
Instruction manual Modbus interface
9.17.035

Hook-up diagram ES-FLOW instruments Modbus
9.16.185

PROFIBUS DP
Instruction manual PROFIBUS DP interface
9.17.025

Hook-up diagram ES-FLOW instruments PROFIBUS DP
9.16.187

RS232
Instruction manual RS232 interface
9.17.027

Hook-up diagram ES-FLOW instruments RS232
9.16.156

A full list of instrument parameters can be found in the Instruction manual RS232 interface (document no 9.17.027).
However, most Bronkhorst® instruments only support a limited set of parameters.
Be aware that some unsupported parameters may be ignored by the device or may even have harmful (side) effects if used.

Bronkhorst®
Instruction Manual ES-FLOW™9.17.116B 9
1.5 Model key

Bronkhorst®
Instruction Manual ES-FLOW™ 9.17.116B10
1.5.1 Customized I/O options
ES-FLOW™ instruments offer various customized input/output functions through pin 5 of the M12 connector and through
pin 2 of the M8 connector as an option. I/O options are factory installed as specified at ordering time, and cannot be
changed manually.
The last 3 groups of the model key on the instrument label indicate the installed I/O configuration. The possible
configurations are described in the table below. See the hook-up diagram for custom bus and I/O configurations
(document 9.16.196) for an explanation of the codes.
Code
Description
000
Disabled, pin 5 is pulled down to 0 Vdc (default selection)
A1V*
0…10 Vdc sourcing output, controller
Analog signal for pump or external valve steering (control signal only)
When the controller output is used for pump or external valve steering (mass flow meters only), make sure
to set parameter Valve maximum to 0.3 [A]. For mass flow controllers, the controller output is limited to a
value below 10Vdc, due to the maximum valve current restriction.
B1V*
4…20 mA sourcing output, controller
Analog signal for pump or external valve steering (control signal only).
When the controller output is used for pump or external valve steering (mass flow meters only), make sure
to set parameter Valve maximum to 0.3 [A]. For mass flow controllers, the controller output is limited to a
value below 20 mA, due to the maximum valve current restriction.
B2V*
3.8…20.8 mA sourcing output, controller
Analog signal for Badger Meter valve with TEIP11 signal converter (control signal only)
C3A
Digital output, min/max alarm
During a min/max alarm, pin 5 is pulled down to 0 Vdc.
C4A
Digital output, counter alarm
During a counter alarm, pin 5 is pulled down to 0 Vdc.
C5S
Digital output, enabled by setpoint (for shut-off control)
Pin 5 is pulled down to 0 Vdc at a controller setpoint, e.g. for shut-off valve activation.
For factory selected analog control (…-A#-C5S):
If parameter Control mode is set for analog control by factory, the minimum setpoint at which the device
(shut-off valve) connected to pin 5 is activated is 1.9%. This prevents possible noise on the analog input
activating the device accidentally.
For factory selected digital control (…-D#-C5S):
If parameter Control mode is set for digital control by factory, the setpoint threshold for activating the
device connected to pin 5 is any value > 0.
Note: If the instrument is forced into Valve Safe State, the digital output is not affected, so a (n.c.) shut-off
valve connected to pin 5 will not close when the (n.c.) controller is in Valve Safe State’
Make sure to use 24 Vdc power supply corresponding to the shut-off valve specifications.
C0I
Digital output, high/low switch via remote parameter (e.g. for shut-off valve control)
Pin 5 is pulled down to 0 Vdc when writing value 1 to parameter IO switch status, this is undone by writing
value 0.
A device connected to pin5 (e.g. a shut-off valve) can be activated/deactivated by writing parameter IO
switch status.
Note: If the instrument is forced into Valve Safe State, the digital output is also affected, so a (n.c.) shut-off
valve connected to pin 5 will be closed when the (n.c.) controller is in ‘Valve Safe State’.
Make sure to use 24 Vdc power supply corresponding to the shut-off valve specifications.

Bronkhorst®
Instruction Manual ES-FLOW™9.17.116B 11
Code
Description
D9E
Digital frequency output, measure
Measurement value is translated to a frequency within given frequency range.
The default frequency range to represent 0…100% flow is 0…10000 Hz. Any other frequency range must be
specified on order.
F9B
Digital pulse output, batch counter
Pin 5 is pulled down to 0Vdc when a given batch size is reached (during a given pulse length).
By default, a pulse is given at each 1x the Counter unit batch value, with a pulse length of 1 second. For
instance, when Counter unit is set to 'ln', a pulse is given each time 1 ln has passed through the instrument.
An alternative pulse length must be specified on order.
Provide a pull-up resistor of 5…10 kOhm to create 15…24 Vdc at pin 5 (according to the applicable hook-up
diagram).
I3C
Digital input, controller mode valve close
Valve closes when pin 5 is connected to 0 Vdc.
This option switches between the default Control mode and mode ‘Valve Close’ (value 3). When the default
Control mode is digital, the default value is 0 (bus/RS232), when the default Control mode is analog, the
default value is 1 (Analog input).
I8C
Digital input, controller mode valve purge
Valve is fully opened when pin 5 is connected to 0 Vdc.
This option switches between the default Control mode and mode ‘Valve Fully Open’ (value 8). When the
default Control mode is digital, the default value is 0 (bus/RS232), when the default Control mode is analog,
the default value is 1 (Analog input).
I1R
Digital input, reset counter
The counter resets when pin 5 is connected to 0 Vdc.
I2R
Digital input, reset alarm
The alarm resets when pin 5 is connected to 0 Vdc.
*) Notes regarding controller options:
·A controller output option (A1V, B1V or B2V) can only be installed in combination with controller mode A or D
(controller enabled, see model key).
·If the controller is enabled, the M8 connector can always be used to control a Bronkhorst® valve (through pin 3).
·Although it is theoretically possible to have 3 controller options installed, no more than 1 signal should be used at any
time.

Bronkhorst®
Instruction Manual ES-FLOW™ 9.17.116B12
2Installation
This chapter describes the steps to take in order to prepare the ES-FLOW™ for first time use.
2.1 Functional properties
Before installing the ES-FLOW™, check if the functional properties match your requirements. The
ES-FLOW Brochure provides general technical specifications, specific technical data can be found
on the product label and in the ordering details.
·Flow/pressure rate(s)
·Media to be used in the instrument
·Upstream and downstream pressure(s)
·Ambient temperature
·Input and output signal
Bronkhorst® instruments are pressure tested to 1.5 times the requested pressure rating and outboard leak tested to at least
2 * 10-9 mbar l/s Helium. The tested pressure is specified on the product label. If the product label is missing or if the
specified pressure is insufficient, the instrument must not be used and should be returned to the factory.
Before installation, make sure that the tested pressure is in accordance with the safety factor of your application. The tested
pressure must always be higher than the maximum operating pressure.
2.2 Mounting
Location
The presence of gas bubbles in the liquid can lead to measuring errors. In
general, the instrument should be mounted in a pipe segment where gas
bubbles cannot accumulate. The image to the right shows the preferable
mounting locations.
·The best location is a horizontal pipe segment or a segment where the fluid direction is upward.
·Gas might accumulate in the horizontal segment if it is followed by a downward segment. Do NOT mount
the instrument in a location like this.
·Mounting in a downward pipe segment with an open end is strongly dissuaded, especially if the pipe
diameter is 1/2" or more. Gravity might let the segment run empty; depending on the specific system
dimensions and the viscosity of the metered fluid, this effect might be stronger or weaker.
·If the instrument is part of a closed fluidic system, mounting the instrument in a downward pipe segment is
not preferable, but may be considered if other mounting locations are more problematic.
To minimize the risk of gas inclusion by cavitation, the preferred location to install a control valve is downstream from the
instrument, the preferred location for a pump is upstream.
Orientation
The ES-FLOW™ has no preferred mounting orientation. However, take into account that the
connection between the measuring tube and the instrument housing is fixed. The display
cannot be turned to get a better view, it can only be adjusted by repositioning the entire
instrument.

Bronkhorst®
Instruction Manual ES-FLOW™9.17.116B 13
Environment
To prevent damage to the internal electronics, make sure the temperature inside the instrument housing does not exceed
60 °C. If necessary, take appropriate heat discharging measures, especially if the instrument is operated inside an enclosure
(e.g. a control cabinet).
2.3 Fluidic connections
The FLOW arrow on the measuring tube indicates the normal flow direction. For normal use, install the ES-FLOW™ in the
process line, in accordance with the direction of the FLOW arrow. For bi-directional measuring, install the instrument in the
direction where the highest flow will be measured (if applicable). When deciding in which direction to install the instrument,
take into account that the measuring range in the opposite direction is approximately 73% of the full scale range (whereas
the instrument can measure 131% FS in the normal direction).
Tighten fittings according to the instructions of their manufacturer.
Do not install small diameter piping on high flow rates and avoid abrupt angles or other disturbances within a distance of
10 pipe diameters from the inlet or outlet of the device.
Do not install pressure regulators within a distance of 25 pipe diameters.
Check the system for leaks before applying pressure, especially if toxic, explosive or other dangerous fluids are used.
2.4 Electrical connections
The ES-FLOW™ is equipped with one or more electrical connection ports. The image to the
right shows the locations of the different ports (the actual presence and appearance of ports
might be different, depending on the ordered fieldbus interface and instrument type):
1. Standard connection port, 8-pin M12 male
2. Fieldbus connection port, 5-pin M12 male/female (optional, fieldbus dependent)
3. Connection port for actuator output, 4-pin M8 female
See sections Model key and Functional properties for configurable and installed options
respectively.
Upon delivery, all connection ports are covered with plastic caps. To maintain the original ingress protection rating, do not
remove the caps of unused connections.
Electrical connections must be made with standard cables or according to the applicable hook-up diagram. Make sure that
the power supply is suitable for the power ratings as indicated on the instrument label or in the technical specifications,
and that double or reinforced insulation is used for the power supply cabling.
Do not power the instrument simultaneously from two different power sources (e.g. bus connection and Plug-in Power
Supply). Doing so will damage the printed circuit board irreparably.
The device contains electronic components that are susceptible to damage by electrostatic discharge. Proper handling
procedures must be taken during installation, removing and connecting the electronics.
The device described in this manual carries the CE-mark and is compliant with the concerning EMC requirements.
However, compliance with the EMC requirements is not possible without the use of proper cables and connector/gland
assemblies Bronkhorst recommends the use of their standard cables. These cables have the right connectors and if loose
ends are used, these are marked to prevent wrong connection. When using other cables, cable wire diameters should be
sufficient to carry the supply current, and voltage loss must be kept as low as possible. When in doubt, contact your
distributor.
When connecting the product to other devices (for instance a PLC), be sure that the integrity of the shielding is not affected.
Do not use unshielded wire terminals.

Bronkhorst®
Instruction Manual ES-FLOW™ 9.17.116B14
2.5 Communication interface
Check if the default network settings match the configuration of the fieldbus system (if applicable). If necessary, the default
settings can be overruled by changing the appropriate parameters (see Network configuration).

Bronkhorst®
Instruction Manual ES-FLOW™9.17.116B 15
3Operation
3.1 Powering up and powering down
It is recommended to turn on power before applying pressure and to switch off power after removing pressure.
Be sure to apply the specified operating pressure(s) . Avoid pressure shocks and bring the fluidic system gradually up to the
level of operating conditions; open and close the fluid supply gently.
3.2 First use
Before starting measurement and control, make sure to expel gas from the system by flushing all fluidic lines with the
process fluid at a relatively high flow rate.
For controllers, give setpoint = 100% or use special Control mode = 8 (valve fully open), to ensure getting the highest
possible flow rate. Control mode 8 bypasses the PID controller, which is particularly useful when having the ES-FLOW™ set
to a low capacity flow range.
3.3 User interface
The screen representations in this section are for illustration purposes only. They do not necessarily reflect the exact lay-out
and/or information displayed on the screen. Some representations might only be applicable to certain instrument types or
factory configurations.
The image to the right shows the screen display, immediately after powering up. The following screen areas can be
distinguished:
1. Top line
2. Measure readout
3. Custom readout 1 (only for instruments with control
function)
4. Custom readout 2
The navigational buttons have the following functionality:
·Enter selected menu
·Enter edit mode
·Confirm selection/changes
·Navigate up in menu
·Change character or list item
·Navigate down in menu
·Change character or list item
·Return to previous menu
·Leave edit mode without making changes
·Select display info

Bronkhorst®
Instruction Manual ES-FLOW™ 9.17.116B16
The communication status of the instrument can be monitored
with the three LEDs to the left of the screen. See LED indications
for a description of the possible indications.
A multifunctional switch ( ) to the right of the screen can be
used to start several functions without having to enter the
menu (see Multifunctional switch).
3.3.1 Main screen functions
3.3.1.1 Unlocking buttons
The switch lock function prevents accidental activation of the user interface (.e.g. by cleaning the instrument and/or its
environment with a hose or high-pressure cleaner). The lock is activated after a period of inactivity (lock time; 60 seconds by
default), after which the individual tip buttons are disabled. The buttons can be unlocked by pressing and holding and
for a couple of seconds (unlock time; default: 4 seconds).
The switch lock properties can be edited in the Settings menu.
3.3.1.2 Selecting display information
The Custom readout 2 area can show different parameters.
Depending on the instrument type, the following parameters
may be available (editable parameters are marked with an *):
·setpoint*
·percentage reading
·actuator/valve percentage
·counter*
·alarm*
·capacity
·temperature
·density
·instrument*
To change the displayed parameter, press from the main
screen. Cycle through the available parameters by pressing
the button repeatedly.
3.3.1.3 Selecting screen area
Depending on the instrument type and the settings of the
readout and control unit, none, one or both of the custom
readout areas can display an editable parameter. If an area
contains an editable parameter, it can be selected and edited
in place. Selection is made visible by a red line above the
concerning area.
·To cycle through the editable screen areas, press or
repeatedly
·To enter edit mode for the selected area, press
·When edit mode is active, press at any time to leave edit
mode without making changes

Bronkhorst®
Instruction Manual ES-FLOW™9.17.116B 17
3.3.1.4 Editing setpoint
·The setpoint of a controllable instrument can be changed if the parameter is displayed in the custom readout area.
· Instruments without a control function have no editable setpoint and can only be monitored (Custom readout 1 not
available).
If the setpoint is configured to be entered as a character string, follow these steps to change its value:
1. Select a readout area
that displays the
setpoint:
2. Press to enter edit
mode (the first
character position is
highlighted):
3. Press or to select
the required character:
4. Press to advance to
the next character
position:
On confirmation of the last digit, the entered value is stored and edit mode is left (whereupon the character highlight is
removed).
If the setpoint is configured to be entered step-wise, follow these steps to change its value:
1. Select a custom
readout area that
displays a setpoint:
2. Press to enter edit
mode (the current
value is highlighted):
3. Press or to
change the parameter
value (hold the button
to scroll fast):
4. Press to store the
current value and leave
edit mode:
The setpoint input method (string or step-wise) can be set in the Settings menu (Settings > Setup > Customize > Setpoint)
3.3.1.5 Resetting counter
1. In the main screen,
select the Custom
readout 2 area:
2. Press to enter edit
mode:
3. Press or to
change the value to
'yes':
4. Press to confirm the
selected option and
reset the counter:

Bronkhorst®
Instruction Manual ES-FLOW™ 9.17.116B18
3.3.1.6 Resetting alarm
Before resetting the alarm, be sure to eliminate the cause. Resetting the alarm without changing the conditions that
caused it will re-activate the alarm immediately.
When an alarm occurs, a message blinks in the top line of the main screen. If the alarm is
configured to be reset automatically, the blinking stops as soon as the alarm conditions no
longer apply. If the alarm is configured to be reset manually, follow these steps to reset it:
1. Custom readout 2 area is
selected automatically:
2. Press to enter edit
mode:
3. Press or to
change the value to
'yes':
4. Press to confirm the
selected option and
reset the alarm:
3.3.2 Menu navigation
The configurable parameters of the instrument and settings of the readout and control unit are organized in a menu
structure.
Items
Menus can contain items of 3 different types:
Sub menu
An arrow pointing to the right indicates a sub menu
Parameter with list selection
An arrow pointing down indicates a parameter that can be
changed by selecting a value from a list
Character string parameter
·First line: unit (if applicable)
·Second line: current parameter value
Not all parameters can be edited; some parameter values are protected, or display a value that is directly linked to the value
of another parameter:
Normal display
Parameter can be edited
Dimmed
Parameter is read-only

Bronkhorst®
Instruction Manual ES-FLOW™9.17.116B 19
Navigation
·Inside menus and sub menus, the selected item is highlighted in red
·Press or to navigate to the required menu item
·Arrows pointing up and/or down in the top line indicate the menu contains more items than
can be displayed.
·Press to enter the selected sub menu or to enter edit mode
·Press to return to the previous screen or menu or to leave edit mode without making
changes
3.3.2.1 Password protection
1. By default, some items
are accessible only
after entering a
password:
2. Enter the password (if
the password contains
less than 8 characters,
fill the remaining
positions with spaces):
3. If the password is
correct, the selected
(sub) menu is
displayed on
confirmation of the
last character position:
4. If the password is
incorrect, access is
denied:
The default password is 'abc' (without quotes) and is case sensitive.
To avoid unauthorized access, change the default password immediately after installation. See Changing password for
instructions.
3.3.2.2 Editing string
1. Select the parameter to
be edited:
2. Press to enter edit
mode (the first
character position is
highlighted):
3. Press or to select
the required
character/digit:
4. Press to advance to
the next character
position:
On confirmation of the last character/digit, the entered value is stored and edit mode is left (wherupon the character
highlight is removed).

Bronkhorst®
Instruction Manual ES-FLOW™ 9.17.116B20
3.3.2.3 Editing list selection
1. Select the parameter to
be edited:
2. Press to enter edit
mode (the selected
value is highlighted):
3. Press or to scroll
through the available
options:
4. Press to confirm the
selected option and
leave edit mode (the
highlight is removed):
3.3.3 Settings menu
The Settings menu provides access to the user configurable instrument parameters, and contains settings for customizing
display behavior of the readout and control unit. The menu is divided into the following sections (available as sub menus):
Sub menu
Description
Readout
Readout settings and fluid selection
Controller
Instrument controller characteristics
Counter
Counter settings
Alarm
Alarm settings
Setup
Device identification, display customization and bus configuration
Advanced
Sensor filter settings and special functions
1. Start in the main
screen:
2. Press to enter the
Settings menu:
3.3.3.1 Readout
In the Readout sub menu, the following parameters can be edited:
Parameter
Description
Supported values
Readout format
Display format of the measured value in the main screen
·actual
·percentage
Fluid
Selected (metered) fluid
As ordered
Capacity
Maximum readout/control value (100%) for the selected fluid
As ordered