Sierra RedyCompact Series User manual

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RedyCompact™ Series
Thermal Mass Flow Meters and Manual Regulators for Gases
RedyCompact™ Meter (GCM)
RedyCompact™ Regulator (GCR)
RedyCompact™Meter with Alarm Module (GSC)
RedyCompact™Regulator with Alarm Module (GCA)
Instruction Manual
Part Number: IM-RedyCompact
V1.Compact.EN A2-2

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Global Support Locations: We are here to help!
CORPORATE HEADQUARTERS
5 Harris Court, Building L Monterey, CA 93940
Phone [phone] [phone] Fax [phone]
[e-mail]
www.sierrainstruments.com
EUROPE HEADQUARTERS
Bijlmansweid 2 1934RE Egmond aan den Hoef
The Netherlands
Phone [phone] Fax [phone]
[e-mail]
ASIA HEADQUARTERS
Second Floor Building 5, Senpu Industrial Park
25 Hangdu Road Hangtou Town
Pu Dong New District, Shanghai, P.R. China
Postal Code 201316
Phone: + 8621 5879 8521 Fax: [phone]
[e-mail]
For Global Service Centers, go to http://www.sierrainstruments.com/facilities.html
© Copyright 2020 and Liability Disclaimer
All rights reserved. No part of this publication may be copied or distributed, transmitted, transcribed,
stored in a retrieval system, or translated into any human or computer language, in any form or by
any means, electronic, mechanical, manual, or otherwise, or disclosed to third parties without the
express written prior permission of Sierra Instruments.
The content of this manual is provided for information only and may be altered without prior notice.
Sierra Instruments assumes no responsibility or liability for any errors or inaccuracies in this manual.
For the latest information on our products, visit our website www.sierrainstruments.com
TRADEMARKS
RedyCompact™ and Redy™ is trademark of Sierra Instruments. Other product and company names
listed in this manual are trademarks or trade names of their respective manufacturers.

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Warnings and Cautions
“Warning,” “Caution,” and “Note” statements are used throughout this manual to draw your attention to important
information.
Symbol Key
Symbol
Symbol
Meaning
Descripition
Warning
“Warning” statements appear with information that is important to
protect people and equipment from damage. Pay very close
attention to all warnings that apply to your application. Failure to
comply with these instructions may damage the meter and
cause personal injury.
Caution
“Caution” indicates that failure to comply with stated instructions
may result in damage or faulty operation of the meter.
Note
“Note” indicates that ignoring the relevant requirements or
precautions may result in flow meter damage or malfunction.
Warning! Do not remove the electronics housing. A damaged hologram seal will void the warranty.
Warning! There are no serviceable parts inside the unit.
Warning! Repairs must only be performed by qualified personnel.
Warning! This unit has several power supply possibilities. If you use the external 24 VDC power
supply, it is strongly recommended to have this device grounded.

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Warning! Toxic, Flammable, Gases and ATEX: In the case of toxic and flammable gases, the
respective safety guidelines in each country must be followed. This Redy device is not Ex certified. In
the case of flammable and toxic gases, fittings, cable glands and pipes intended for that purpose must
be used. The responsibility for safe operation lies with the user and designer of the facilities.
Important Customer Notice- Oxygen Service
Sierra Instruments, Inc. is not liable for any damage or personal injury, whatsoever, resulting from the use
of Sierra Instruments standard mass flow meters or controllers for oxygen gas. You are responsible for
determining if this mass flow meter or controller is appropriate for your oxygen application. You are
responsible for cleaning the mass flow meter or controller to the degree required for your oxygen flow
application.
.
Warning! Power. If it becomes necessary to remove the instrument from the system or change a
battery, the power to the device must be disconnected. Always switch off the power before you
disconnect terminal connections in potentially dangerous surroundings to avoid sparks.
Note! Subject to Change: Due to our policy of ongoing product development, we reserve the right
to change the information in this manual without notice.

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RedyCompact™ Series Instruction Manual
This manual is for RedyCompact Series models:
•RedyCompact™ Meter (GCM)
•RedCompact™ Regulator (GCR)
•RedyCompact™ Meter with Alarm Module (GSC)
•RedyCompact™ Regulator with Alarm Module (GCA)
This manual is valid for instruments with a serial number greater than (>300000).
Receipt of System Components
When receiving a Sierra mass instrument, carefully check the outside packing carton for
damage incurred in shipment. If the carton is damaged, notify the local carrier and submit
a report to the factory or distributor. Remove the packing slip and check that all ordered
components are present. Make sure any spare parts or accessories are not discarded
with the packing material. Do not return any equipment to the factory without first
contacting Sierra Customer Service.
Technical Assistance
If you encounter a problem with your flow meter, review the configuration information for
each step of the installation, operation, and setup procedures. Verify that your settings
and adjustments are consistent with factory recommendations. Installation and
troubleshooting information can be found in this manual. See Chapter 3 for installation
and Chapter 6 for troubleshooting.
If the problem persists after following the troubleshooting procedures outlined in the
RedySmart product manual, contact Sierra Instruments by fax or by E-mail (see inside
front cover). For urgent phone support you may call [phone] or [phone]
between 8:00 a.m. and 5:00 p.m. PST. In Europe, contact Sierra Instruments Europe at
[phone]. In the Asia-Pacific region, contact Sierra Instruments Asia at + 86-21-
58798521. When contacting Technical Support, make sure to include this information:
• The flow range, serialnumber, andSierra order number (all marked on
the meter nameplate)
• The software version (visible at start up)
• The problem you are encountering, and any corrective action taken
• Application information (gas, pressure, temperature and piping
configuration)
This manual is updated for the latest firmware version of the red-y compact 2. Please verify
that your unit is updated with firmware version 3.0.6 available from our website (see chapter
5.12 Firmware upgrade).

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Recycling
Note the existing regulations of your country.
Register Your Product Today
Three (3) Year Warranty (Sierra MEMS Therma Mass Flow Sensor: RedySmart and
RedyCompact Brands)
All Sierra products are warranted to be free from defects in material and workmanship and will be
repaired or replaced at no charge to Buyer, provided return or rejection of product is made within a
reasonable period but no longer than three (3) years for calibration and non-calibration defects,
from date of delivery.
To assure warranty service, customers must register their products online on Sierra’s website.
Online registration of all of your Sierra products is required for our warranty process. Read
complete warranty policy at www.sierrainstruments.com/warranty.
Lifetime No-Drift Sensor Warranty
Sierra Mems Thermal Mass Flow Products
In addition to Sierra’s standard three (3) year manufacturing warranty on all MEMS mass flow
instruments produced, Sierra also offers a Lifetime No-Drift Sensor Warranty. Sierra defines no-
drift as less than 1% of full scale over the life of the instrument. Therefore, if drift of greater than
1% of full scale occurs over the sensor’s lifetime, the sensor and/or entire instrument will be
repaired or replaced and recalibrated free of charge.
This warranty applies to all MEMS/CMOS thermal mass flow sensors standard on every Sierra
RedySmart™ and RedyCompact™ models sold after January 15, 2020. This warranty is only valid
if the unit is exclusively used with the gas or gases specified during the initial calibration or
recalibration, without any additives in any form and under the operating conditions (temperature,
inlet and outlet pressure, full scale flow rate) the unit was originally specified for.
Sierra’s Lifetime No-Drift Sensor Warranty is made possible due to high-precision MEMS (Micro-
Electro Mechanical Systems) technology utilizing an advanced ultra-stable CMOS (Complementary
Metal Oxide Semiconductor) sensor. The use of MEMS techniques allows both electronic circuits
and mechanical devices to be manufactured on a silicon chip, similar to the process used for
integrated circuits.
Learn more about Sierra’s Lifetime No-Drift Sensor Warranty at
www.sierrainstruments.com/warranty or see detailed lifetime no-drift sensor warranty in Appendix
8.
Register Warranty Online
Register now at www.sierrainstruments.com/register. Learn more about Sierra’s warranty policy at
www.sierrainstruments.com/warranty .

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Table of contents
Register Your Product Today 6
1. Introduction 9
1.10. Features of RedyCompact Thermal Mass Flow Meters 9
1.11. Scope of Warranty 9
1.12. Instructions and Warnings 10
1.13. Documentation and Cables Supplied 11
1.14. The Measurement Principle 11
1.15. Real, Standardized and Normalized flow 12
1.16. CMOS technology 13
1.17. Block Diagram 14
2. General device specifications 15
2.10. Safety 16
2.11. Electrical Data for Meter GCM and Regulator GCR 16
2.12. Measurement Ranges (air) 16
2.13. USB Interface 17
2.14. Battery 17
2.15. Optional Modules 18
2.16. Calibration 19
2.17. Operation with Other Gases 19
2.18. Pressure Loss 20
2.19. Temperature Compensation 20
2.20. Pressure Compensation 20
2.21. Response Time 20
2.22. Filter settings 21
3. Installation and Commissioning 22
3.10. Mounting Position and Mounting Location 22
3.11. Requirements for Pipework 22
3.12. Fittings and Filters 23
3.13. Filters / Gas Cleanliness 23
3.14. Electrical Power Supply 24
3.15. How to replace the battery? 25
3.16. Warm-up time 26
4. Operation 27
4.10. Introduction 28
4.11. Main Menu 34
4.12 Settings 43
5Maintenance 50
5.10. Cleaning to Remove Contamination 50
5.11. Returns 51

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5.12. Firmware Upgrade 52
6. Troubleshooting 54
6.10. Pressure Loss 55
6.11. Dimensional Drawings ¼” In mm 58
6.12. Dimensional Drawings ¼” In Inches 59
6.13. Dimensional Drawings ½” In mm 60
6.14. Dimensional Drawings ½” In Inches 61
6.15. Type Code Overview 62
6.16. Wetted Parts RedyCompact Series 63
6.17. Overview Default Settings 64
7. Overview Menu RedyCompact 67
8. Detailed Warranty Statement for RedySmart & RedyCompact Brands 70
9. Index 72

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1. Introduction
Thank you for choosing devices from the RedyCompact™Series. These operating instructions will
help you to install and operate these gas flow measuring devices. Please read through these
instructions carefully before installing the unit. Our aim has been to write a full and practical guide.
We would be grateful if you would notify us of any shortcomings or mistakes.
Please contact Sierra Instruments” Customer Service if you have questions about any aspect of
the product (s), you may call [phone] or [phone] between 8:00 a.m. and 5:00
p.m. PST. In Europe, contact Sierra Instruments Europe at [phone]. In the Asia-Pacific
region, contact Sierra Instruments Asia at + 86-21-58798521.
The RedyCompact is a thermal based mass flow meter that can measure the mass flow of gases.
The core element of the red-y thermal mass flow meter is a CMOS sensor chip. The sensor and
parts of the electronics are on one board and offer a number of advantages for the user.
1.10. Features of RedyCompact Thermal Mass Flow
Meters
In developing and manufacturing the devices, we have focused primarily on customers and their
applications. Our aim is to implement customers' requirements in the form of new developments or
enhancements on an ongoing basis. The essential features are:
•Compact design
•Battery operated optional (Portable)
•Dot-matrix LCD touch screen
•Multiple gases possible (3 gases)
•Flexible due to the many different settings accessible through the touch screen
•Back-light screen in USB and 8…30 VDC power mode
•Power also possible with USB micro-B connector or external 8…30 VDC (Separate
module)
•Optional alarm module with power, 3 contacts and 2 inputs
•Display can be rotated 180 degrees
•Fast and accurate measurement and control
•Integrated temperature compensation and flow totalizer (standard)
•Easy to maintain and service
•Firmware upgradable through USB connection
•3-year warranty
1.11. Scope of Warranty
Warranty for the RedyCompact product line extends to material and manufacturing defects only.
Maximum warranty covers product replacement free of charge. The following causes of
faults/damage are not covered under warranty:
•Use outside the operating limits
•Damage due to corrosion
•Damage due to leaking batteries
•Mechanical damage in general

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•Contamination due to improper sealing
•Contamination due to impure gases or penetration of liquids
•Damage to electronic components due by over-voltage or electrostatic discharges, and
corrosion damage due to aggressive environments
•Functional failure due to incorrect operation or faulty parameterization
•If the unit has been opened or otherwise tempered with
•Drift in the calibration
•EEPROM damage
1.12. Instructions and Warnings
Read all of the operating instructions thoroughly before installing and commissioning equipment.
Misconceptions and incorrect use can lead to breakage of the measuring device or risk of personal
injury. Should one of these cases occur, the responsibility lies solely with the operator of the
device.The installation, commissioning and operation and maintenance must be done by
appropriately qualified personnel.
1.12.1 Installation
It is recommended that the user check the devices on a regular schedule to ensure that it is leak
free as both metal and elastomer seals, gaskets, o-rings and valve seats may change with age and
exposure to process gas.
1.12.2 Power
If it becomes necessary to remove the instrument from the system or change a battery, the power
to the device must be disconnected. Always switch off the power before you disconnect terminal
connections in potentially dangerous surroundings to avoid sparks.
Important Note
Please note before the start-up:
•Do not use sealing tape or liquid sealant
•Piping must be cleaned before installation of instrument
Warning!
Products in this manual may contain metal or elastomer seals, gaskets, o-
rings or valve seats. It is the “user’s” responsibility to select materials that
are compatible with their process and process conditions. Using materials
that are not compatible with the process limitations of the device, may
result in equipment damage and/or personnel injury or death.