TSI Instruments HM685 User manual

HYDRONIC MANOMETER
MODEL HM685
OWNER’S MANUAL
P/N 6006820, REVISION D
FEBRUARY 2016

HYDRONIC MANOMETER
MODEL HM685
OWNER’S MANUAL
P/N 6006820, REVISION D
FEBRUARY 2016
SHIP TO/MAIL TO:
TSI Incorporated
500 Cardigan Road
Shoreview, MN 55126-3996
USA
U.S.
Technical Support:
[phone]/[phone]
Fax:
[phone]
E-mail address:
[email protected]
Website:
http://www.tsi.com
INTERNATIONAL
Technical Support:
(001 651) 490-2811
Fax:
(001 651) 490-3824

ii Hydronic Manometer Model HM685
Manual History
The following is a manual history of the Hydronic Manometer
Model HM685 Owner’s Manual (P/N 6006820).
Revision Date
A May 2013
B January 2014
C June 2015
D February 2016

iii
Warranty
Part Number
6006820 / Revision D / February 2016
Copyright
©TSI Incorporated / 2013–2016 / All rights reserved.
Address
TSI Incorporated / 500 Cardigan Road / Shoreview, MN 55126 / USA
Fax No.
651-490-3824
E-mail Address
[email protected]
Limitation of Warranty
and Liability
(effective February 2015)
(For country-specific terms and conditions outside of the USA, please visit
www.tsi.com.)
Seller warrants the goods, excluding software, sold hereunder, under normal use and
service as described in the operator's manual, to be free from defects in workmanship
and material for twenty-four (24) months, or if less, the length of time specified in the
operator's manual, from the date of shipment to the customer. This warranty period is
inclusive of any statutory warranty. This limited warranty is subject to the following
exclusions and exceptions:
a. Hot-wire or hot-film sensors used with research anemometers, and certain other
components when indicated in specifications, are warranted for 90 days from the
date of shipment;
b. Pumps are warranted for one year or 3000 hours; whichever comes first;
c. Parts repaired or replaced as a result of repair services are warranted to be free
from defects in workmanship and material, under normal use, for 90 days from the
date of shipment;
d. Seller does not provide any warranty on finished goods manufactured by others or
on any fuses, batteries or other consumable materials. Only the original
manufacturer's warranty applies;
e. This warranty does notcover calibrationrequirements, and seller warrants onlythat
the instrument or product is properly calibrated at the time of its manufacture.
Instruments returned forcalibration are not covered bythis warranty;
f. This warranty is VOID if the instrument isopened by anyone other than a factory
authorized service center with the one exception where requirements set forth in the
manual allowan operator toreplace consumables or perform recommended cleaning;
g. This warranty is VOID if the product hasbeen misused, neglected, subjected to
accidental or intentional damage, or is not properly installed, maintained, or cleaned
according to the requirements of the manual. Unless specifically authorized in a
separate writing by Seller, Seller makes no warranty with respect to, and shall have
no liability in connection with, goods which are incorporated into other products or
equipment, or which are modified by any person other than Seller.
The foregoing is IN LIEU OF all other warranties and is subject to the LIMITATIONS
stated herein. NO OTHER EXPRESS OR IMPLIED WARRANTY OF FITNESS FOR
PARTICULAR PURPOSE OR MERCHANTABILITY IS MADE. WITH RESPECT TO
SELLER’S BREACH OF THE IMPLIED WARRANTY AGAINST INFRINGEMENT,
SAID WARRANTY IS LIMITED TO CLAIMS OF DIRECT INFRINGEMENT AND
EXCLUDES CLAIMS OF CONTRIBUTORY OR INDUCED INFRINGEMENTS.
BUYER’S EXCLUSIVE REMEDY SHALL BE THE RETURN OF THE PURCHASE
PRICE DISCOUNTED FOR REASONABLE WEAR AND TEAR OR AT SELLER’S
OPTION REPLACEMENT OF THE GOODS WITH NON-INFRINGING GOODS.
TO THE EXTENT PERMITTED BY LAW, THE EXCLUSIVE REMEDY OF THE USER
OR BUYER, AND THE LIMIT OF SELLER'S LIABILITY FOR ANY AND ALL LOSSES,
INJURIES, OR DAMAGES CONCERNING THE GOODS (INCLUDING CLAIMS
BASED ON CONTRACT, NEGLIGENCE, TORT, STRICT LIABILITY OR

iv Hydronic Manometer Model HM685
OTHERWISE) SHALL BE THE RETURN OF GOODSTO SELLER AND THE
REFUND OF THE PURCHASE PRICE, OR, AT THE OPTION OF SELLER, THE
REPAIR OR REPLACEMENT OF THE GOODS. IN THE CASE OF SOFTWARE,
SELLER WILL REPAIR OR REPLACE DEFECTIVE SOFTWARE OR IF UNABLE TO
DO SO, WILL REFUND THE PURCHASE PRICE OF THE SOFTWARE. IN NO
EVENT SHALL SELLER BE LIABLE FOR LOST PROFITS, BUSINESS
INTERRUPTION, OR ANY SPECIAL, INDIRECT, CONSEQUENTIAL OR
INCIDENTAL DAMAGES. SELLER SHALL NOT BE RESPONSIBLEFOR
INSTALLATION, DISMANTLING OR REINSTALLATION COSTS OR CHARGES. No
Action, regardless of form, may be brought against Seller more than 12 months after a
cause of action has accrued. The goods returned under warranty to Seller'sfactoryshall
be at Buyer's risk of loss, and will be returned, if at all, at Seller's risk of loss.
Buyer and all users are deemed to have accepted this LIMITATION OF WARRANTY
AND LIABILITY, which contains the complete and exclusive limited warrantyof Seller.
This LIMITATION OF WARRANTY ANDLIABILITY may not be amended, modified or
its terms waived, except by writing signed by an Officer of Seller.
Trademarks
CompuDat is a trademark of TSI Incorporated. TSI and the TSI logo are registered
trademark of TSI Incorporated. Microsoft, Excel, Windows, and Vista are registered
trademarks of Microsoft Corporation.

v
Contents
Manual History............................................................................................ii
Warranty.....................................................................................................iii
About This Manual ....................................................................................ix
Formatting and Typography..................................................................ix
Technical Assistance—Help! ................................................................ix
Safety Information.....................................................................................xi
Labels....................................................................................................xi
Description of Caution/Warning Symbols ............................................ xii
Caution.............................................................................................. xii
Warning............................................................................................. xii
Caution or Warning Symbols............................................................ xii
CHAPTER 1 Introduction........................................................................1-1
Instrument Description........................................................................1-2
Unpacking ...........................................................................................1-3
CHAPTER 2 Getting Started...................................................................2-1
Keypad................................................................................................2-1
Powering the Instrument.....................................................................2-2
Using the AC Adapter......................................................................2-2
Battery Installation...........................................................................2-2
Battery Charging..............................................................................2-4
Instrument Start-up .............................................................................2-5
Zeroing the Manometer.......................................................................2-5
Zeroing the Gauge Pressure Sensor...............................................2-5
Zeroing the Differential Pressure Sensor ........................................2-6
Connecting the Manometer to the Test Points....................................2-7
Attaching the Hoses to the Manometer...........................................2-7
Bleeding the Entrained Air...............................................................2-7
Attaching the Hoses to the Test Points ...........................................2-8
Performing Pressure Measurements..................................................2-8
Accessing the Pressure Measurement Screen ...............................2-8
Pressure Measurement Screen.......................................................2-8
Continuous Pressure Measurements..............................................2-9
Discrete Pressure Measurements...................................................2-9
Performing Flow Measurements.......................................................2-10
Accessing the Flow Measurement Screen....................................2-10
Flow Measurement Screen............................................................2-10
Continuous Flow Measurements...................................................2-11
Discrete Flow Measurements........................................................2-11

vi Hydronic Manometer Model HM685
Performing Temperature Measurements..........................................2-11
Connecting the Temperature Probe..............................................2-11
Setting Units of Measure...................................................................2-12
Storing Discrete Measurements........................................................2-12
Disconnecting the Manometer from the Test Points.........................2-13
CHAPTER 3 Main Menu...........................................................................3-1
Zero Gauge Pressure..........................................................................3-1
Flow Setup..........................................................................................3-2
Select Cv/Kv Factor.........................................................................3-2
Select Factor Type...........................................................................3-3
Enter Cv/Kv Value ...........................................................................3-3
Edit Cv/Kv Name .............................................................................3-4
Temporary Adjustments to the Cv (Kv) Value.................................3-4
Select Fluid......................................................................................3-5
CHAPTER 4 Data Logging......................................................................4-1
Menu ...................................................................................................4-1
Log Mode ............................................................................................4-1
Log Settings........................................................................................4-2
Choose Test ....................................................................................4-3
Name Test...........................................................................................4-3
View Data............................................................................................4-4
Choose Test ....................................................................................4-4
View Stats........................................................................................4-4
View Samples..................................................................................4-4
Delete Data .........................................................................................4-5
% Memory...........................................................................................4-6
CHAPTER 5 Calculations Menu .............................................................5-1
Brake Power........................................................................................5-1
Inputs...............................................................................................5-2
Heat Flow............................................................................................5-4
Inputs...............................................................................................5-4
Calculating Cv/Kv................................................................................5-6
Inputs...............................................................................................5-7
Output..............................................................................................5-8
Pump Law Impeller Diameter..............................................................5-8
Inputs...............................................................................................5-8
Output..............................................................................................5-9
Pump Law Delta P ............................................................................5-10
Inputs.............................................................................................5-10
Output............................................................................................5-11
Pump Law Brake Power....................................................................5-12
Inputs.............................................................................................5-12
Output............................................................................................5-13
CHAPTER 6 Settings Menu.....................................................................6-1
Beeper.................................................................................................6-2
Select Units.........................................................................................6-2
Differential Pressure and Gauge Pressure.........................................6-3

Contents vii
Flow.....................................................................................................6-3
Temperature........................................................................................6-4
Time Constant.....................................................................................6-4
Contrast...............................................................................................6-5
Set Time..............................................................................................6-5
Set Date ..............................................................................................6-6
Time Format........................................................................................6-6
Date Format........................................................................................6-7
Number Format...................................................................................6-7
Backlight..............................................................................................6-8
Auto Off...............................................................................................6-8
CHAPTER 7 Calibration ..........................................................................7-1
Calibration Differential Pressure and Calibration Gauge Pressure.....7-2
Calibration Temperature 1 and 2........................................................7-3
Restore Factory Calibration ................................................................7-3
CHAPTER 8 Maintenance and Troubleshooting..................................8-1
Routine Maintenance..........................................................................8-1
Draining the Hoses..........................................................................8-1
Draining the Manometer Valve........................................................8-1
In-Line Flow Restrictor.....................................................................8-2
Cleaning the In-line Flow Restrictors...............................................8-2
Cleaning the Instrument Housing....................................................8-2
Calibration...........................................................................................8-3
Troubleshooting ..................................................................................8-3
Technical Contacts..............................................................................8-5
CHAPTER 9 USB Downloading to a Computer ....................................9-1
Installing the USB Software ................................................................9-1
Connecting the Manometer to the Computer......................................9-2
First Time Connection......................................................................9-2
Software Interface...............................................................................9-6
HM685 Data Download Steps .........................................................9-7
HM680 Download Instructions.........................................................9-9
Downloading Data.............................................................................9-10
APPENDIX A Specifications..................................................................A-1
APPENDIX B Compliance......................................................................B-1

viii Hydronic Manometer Model HM685
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ix
About This Manual
This manual explains how to set up, operate, and maintain the TSI®
Hydronic Manometer Model HM685. Please read it thoroughly before using
the instrument.
Formatting and Typography
Step-by-step instructions are numbered: 1, 2, 3, etc., set flush-left
against the inside margin.
References to keys on the manometer and the instrument's displayed
readout are represented in bold typeface. In addition to the different
typeface, displayed messages appear in quotes.
Technical Assistance—Help!
For technical assistance or questions about the instrument or this manual,
or if the HM685 Hydronic Manometer needs repair or recalibration, call
Technical Support at [phone] or [phone].

x Hydronic Manometer Model HM685
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xi
Safety Information
Carefully read each of the following safety warnings prior
to using the HM685 Hydronic Manometer.
This section gives instructions to promote safe and proper handling of the
HM658 Hydronic Manometer.
I M P O R T A N T
There are no user-serviceable parts inside the instrument. Refer all repair
and maintenance to a qualified factory-authorized technician. All
maintenance and repair information in this manual is included for use by a
qualified factory-authorized technician.
Labels
Identification and calibration labels are attached to the outside of the
hydronic manometer housing.
1. Serial number label
(back panel) )
2. Calibration label
(back panel)
3. European symbol for
non-disposable item.
Item must be recycled.

xii Hydronic Manometer Model HM685
Description of Caution/Warning Symbols
Appropriate caution/warning statements are used throughout the manual
and on the instrument that require you to take cautionary measures when
working with the instrument.
Caution
C a u t i o n
Failure to follow the procedures prescribed in this manual might result in
irreparable equipment damage. Important information about the operation
and maintenance of this instrument is included in this manual.
Warning
W A R N I N G
Warning means that unsafe use of the instrument could result in serious
injury to you or cause damage to the instrument. Follow the procedures
prescribed.
Caution or Warning Symbols
The following symbols may accompany cautions and warnings to indicate
the nature and consequences of hazards:
Warns that uninsulated voltage within the instrument may
have sufficient magnitude to cause electric shock.
Therefore, it is dangerous to make contact with any part
inside the instrument.
Warns that the instrument is susceptible to electro-static
dissipation (ESD) and ESD protection procedures should be
followed to avoid damage.
Indicates the connector is connected to earth ground and
cabinet ground.
Carefully read each of the following safety warnings prior
to using the HM685 Hydronic Manometer.
W A R N I N G S
Never use the HM685 Hydronic Manometer or accessories on
potable water systems or other systems which may be used to convey
fluids for human or animal consumption.
Never charge non-rechargeable batteries by setting battery-type
selection switch to NiMH when using alkaline or other non-
rechargeable batteries. Fire, explosions, or other hazards may result.

xiii
C a u t i o n s
Never use the HM685 Hydronic Manometer to measure the pressure
of volatile, flammable, or otherwise hazardous fluids or gasses. The
instrument is not designed to be intrinsically safe, nor is it designed
for use with caustic or corrosive chemicals.
Never connect the HM685 Hydronic Manometer or accessories to
systems which exceed the instrument’s maximum pressure
specification (300 psi; 2068 kPa).
Observe proper safety precautions and wear appropriate personal
protective equipment, including gloves and eyewear, when working
on high pressure or high temperature systems. Ruptured or leaking
lines pose a potential risk of serious personal injury.
When using the HM685 Hydronic Manometer, verify all hose
connections are secure prior to taking pressure measurements.
Loose connections may result in the discharge of pressurized water
or air, posing a potential risk of serious personal injury.
Exercise caution when disconnecting the HM685 Hydronic
Manometer from a pressurized system. Water or air discharged under
pressure poses a potential risk of severe injury.
Exercise caution in using the HM685 Hydronic Manometer near
electrical equipment. Water spray associated with purging or
disconnecting hoses presents a potential risk of damage to such
equipment.
Thoroughly drain and dry the HM685 Hydronic Manometer hoses and
internal piping after each use. This will help in limiting the potential for
growth of hazardous microorganisms.
Never plug into the instrument any power supply other than the one
provided with the instrument.
Always make certain that the battery switch is in the correct position
for the type of battery being used (Alkaline/NiMH). Failure to do so
may result in Fire, Explosions or other hazard.
Never use Alkaline and NiMH batteries together on the same
instrument.
Always use the hoses with the provided Flow Restrictor connected in
line with the shut-off valves to prevent “Water Hammer.” Water
Hammer is a fast moving shock wave of pressure caused by sudden
changes in the system such as a valve being opened or closed or a
pump being turned on or off.

xiv Hydronic Manometer Model HM685
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1-1
C H A P T E R 1
Introduction
The HM685 Hydronic Manometer is an easy-to-use instrument designed
for the accurate measurement of pressure and calculation of flow in non-
potable water and air systems. Features of the manometer include the
following:
Single-function keys for ease of use
Simultaneous measurement and display of High-side gauge and
Differential pressure
Direct calculation and display of Low-side gauge pressure
Direct calculation and display of flow
Data logging with calculated statistics
Output port for downloading stored data to a computer
User-selectable units of measure
User-selectable time constant
Easy-to-read, LCD with backlight
Power supplied via AC adapter or batteries (alkaline or
rechargeable NiMH)
Internal NiMH battery charging
Automatic power shutoff
Splash-proof case
Rugged carrying case for storage of meter, hoses, accessories, tools,
and paperwork
Two Temperature ports for simultaneous low and high side
temperature measurements

1-2 Hydronic Manometer Model HM685
Instrument Description
The HM685 Hydronic Manometer includes:
Meter
4-inch temperature
probe
Hard carrying case
(2) 6-foot (1.8 m)
hoses with shut-off
valves & filters
(2) P/T gauge
adapter probes
(2) B&G readout
probes
(2) ¼” Flare male ×
¼” male NPT
fittings
(2) Female ¼” NPT
to Male ¼” ISO
Parallel Pipe
Threads
(2) Female ¼” NPT
to Male ¼” ISO
Tapered Pipe
Threads
AC adapter
(4) NiMH batteries
Carrying strap
Owner’s manual
NIST traceable
certificate
Keypad
AC Power
Adapter
Input Port USB Port
Bottom Port Cover
LCD Display
Temperature Probe
Port 2 Temperature Probe
Port 1
Pressure
Ports
Neck/Hanging
Strap Clips
Valve Handle
Figure 1-1
HM685 Meter Description

Introduction 1-3
Unpacking
As unpacking the instrument and accessories, check the components
against the packing list. If any parts are missing or damaged, notify TSI
immediately. Tables 1-1 and 1-2 list standard and optional components for
the HM685 Hydronic Manometer.
Table 1-1
Standard Components
Item
Part No.
4 in. (10 cm) long, 0.125 in. (3.175 mm) dia. Temperature probe
801290
Carrying case
1319409
Blue and red hose kit with shut-off valves and flow restrictor
6006813
P/T gauge adapter probes (2)
632360004
B&G readout probes (2)
632360010
AC adapter
6004983
4 AA-size NiMH battery
1208048
Battery holder
1801206
Carrying strap
2913011
Owner’s manual
6006820
USB Cable
1303754
CompuDat CD
1083575
Pocket screw driver
3012054
Table 1-2
Optional Components
Item
Part No.
Accessory fittings kit (USA only)
HMFIT
4 in. (10 cm) long, 0.125 in. (3.175 mm) dia. Temperature probe
801290
External battery charger with (4) AA NiMH batteries (USA only)
801093
Please register your HM685 promptly through our website at
http://register.tsi.com. Registration of your product allows us to notify you of
product updates.

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