Omega Products HHP360 Installation Manual

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User’s Guide

HHP360 Series

Precision Absolute Manometer

Servicing North America:

U.S.A.: Omega Engineering, Inc., One Omega Drive, P.O. Box 4047

ISO 9001 Certified

Stamford, CT 06907-0047
Toll-Free: 1-800-826-6342 Tel: [phone]
FAX: [phone] e-mail: [e-mail]

Canada: 976 Bergar

Laval (Quebec), H7L 5A1 Canada
Toll-Free: 1-800-826-6342 TEL: [phone]
FAX: [phone] e-mail: [e-mail]

For immediate technical or application assistance:

U.S.A. and Canada: Sales Service: 1-800-826-6342/1-800-TC-OMEGA

®

Customer Service: 1-800-622-2378/1-800-622-BEST

®

Engineering Service: 1-800-872-9436/1-800-USA-WHEN

®

Mexico En Español: 001 [phone] FAX: [phone]
Latin America [e-mail] e-mail: [e-mail]

Servicing Europe:

Benelux: Managed by the United Kingdom Office

Toll-Free: 0800 099 3344 TEL: [phone]
FAX: [phone] e-mail: [e-mail]

Czech Republic: Frystatska 184

733 01 Karviná, Czech Republic
Toll-Free: 0800-1-66342 TEL: [phone]
FAX: [phone] e-mail: [e-mail]

France: Managed by the United Kingdom Office

Toll-Free: 0800 466 342 TEL: [phone]
FAX: [phone] e-mail: [e-mail]

Germany/Austria: Daimlerstrasse 26

D-75392 Deckenpfronn, Germany
Toll-Free: 0800 6397678 TEL: [phone]
FAX: [phone] e-mail: [e-mail]

United Kingdom: OMEGA Engineering Ltd.

ISO 9001 Certified

One Omega Drive, River Bend Technology Centre, Northbank
Irlam, Manchester M44 5BD United Kingdom
Toll-Free: 0800-488-488 TEL: [phone]
FAX: [phone] e-mail: [e-mail]

OMEGAnet®Online Service Internet e-mail

omega.com [e-mail]

It is the policy of OMEGA Engineering, Inc. to comply with all worldwide safety and EMC/EMI
regulations that apply. OMEGA is constantly pursuing certification of its products to the European New
Approach Directives. OMEGA will add the CE mark to every appropriate device upon certification.

The information contained in this document is believed to be correct, but OMEGA accepts no liability for any
errors it contains, and reserves the right to alter specifications without notice.
WAR NING: These products are not designed for use in, and should not be used for, human applications.

USER MANUAL

PRECISION ABSOLUTE MANOMETER

The Precision Absolute Manometer is a microprocessor based
pressure sensing device used to directly measure pressure
relative to absolute zero. Model HHP360-A measures pressure
from 0 – 17.403 PSIA and model HHP360-B measures
pressure from 0 – 38.674 PSIA. Pressure can be displayed in a
variety of English and S.I. engineering units. All HHP360s
include a Tare function, a Min/Max function, selectable damp
rates and altitude displayed in feet or meters. The HHP360
can also display barometric pressure corrected to sea level.

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Table of Contents

User Interface ......................................................................................3

1. Keypad Functions ....................................................................3

ON/OFF & BACK

MIN/MAX & UP KEY .............................................................3

TARE & DOWN KEY..............................................................3

PRGM & ENTER KEY ............................................

BACKLIGHT KEY.......................................................................4

2. Zeroing the Manometer ...........................................................5

3. Program Mode........................................................................10

Units Select ..................................................................................11

Displaying Altitude (US Standard Atmosphere 1962) ..............12

Display User Defined Altitude....................................................12

Pressure Corrected to Sea Level ..................

Damp Rate Select ........................................................................17

User Info Select ...........................................................................18

Auto Shut-Off ..............................................................................19

Lockout Select .............................................................................20

Header Name .........................................................

Contrast Select .............................................................................22

Data Logging ............................................. 23

Leak Test......................................................................................24

Re-Calibration ...................................................................................25

RE-CALIBRATION – 1 Point EDIT and START ....................26

RE-CALIBRATION – 5 Point EDIT .........................................27

RE-CALIBRATION – 5 Point START............ ..........................27

RE-CALIBRATION – Restore Factory Defaults ......................29

Specifications ....................................................................................30

Certification/Safety/Warnings ..........................................................31

Changing the Batteries......................................................................31

KEY

............................................................3

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

......................21

..................................

................3

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User Interface

1. Keypad Functions

ON/OFF & BACK ▲ KEY

Turns the manometer on and enters the unit into the Mea sur e
Mode. Pressing the key while in the Measure Mode turns the unit
off. It also serves as a backspace key when editing in the Program
Mod e. The key takes the user out of a programmable register

without changing the previous setting. Pressing this key repeatedly
will return the user to the Measure Mode and then shut off the
manometer.

MIN/MAX & UP ▲ KEY

In the Measure Mode activates the Min/Ma x function of the
manometer. When activated the minimum value is displayed on the
upper left of the display and the maximum value on the upper
right. This key also deactivates and resets this function. The key
is used to scroll through the programmable registers when the unit
is in the Program Mode. Once a programmable register is selected

▲

the key can be used to edit that register.

TARE & DOWN KEY

In the Measure Mode toggles on/off the Tare function. The Tare
function is designed to set the display value to “0”. With Tare
activated, the letter “T” appears in the lower left of the display.

▲

The key is used to scroll through programmable registers with
the unit in the Program Mode. Once a programmable register is

selected the key can be used to edit that register.

PRGM & ENTER KEY

Puts the manometer into the Program Mode from the Me asure
Mode. When in the Program Mode, pressing this key selects the

programmable register to be edited (with prompt for password if
Lockout is set). After the register has been edited, pressing the

▲

▲

▲

▲

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PRG M key enters the new setting into the manometer’s non­volatile memory. This key also acts as a forward space key when

editing user input such as the header name and user units.

BACKLIGHT KEY

The BACKLIGHT key, represented by the standard light bulb

symbol, toggles the display backlight between green and off.

▲

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2. Zeroing the Manometer

The HHP360 is a stable and precise instrument. However, on
occasion the handheld should have a new zero taken. This is done
to remove zero drift that can occur since it was last zeroed. The
HHP360 can be zeroed only if the new applied zero is within ± 1%

FS of the original factory calibration zero. This prevents

accidental zeroing at atmospheric pressure or other relatively high
pressures. If outside this limit a “ZERO RANGE ERROR”
message appears and the manometer will not zero.

The HHP360 provides three mechanisms for re-zeroing:

1. Referenced to Absolute Zero: This traditional and
preferred method takes a “snapshot” of the measured pressure
when a vacuum of less than 100 microns Absolute is applied

to the sensor.

2. Factory Zero: This method restores the calibration curve to
the original zero taken at the factory. Note that this feature is
intended for comparison purposes, and should not be used for
real pressure measurement, as any zero-drift will not be
compensated.

3. User-Adjusted Zero: This method allows the user to enter
any pressure value when a known reference is applied (for
example, the local barometer). The manometer will compare
its actual measured value with the entered value, and calculate
a new zero reference based on the offset.

1. To zero the manometer using Referenced to Absolute
Zero, start with the unit turned OFF and use the following
keystroke sequence:

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Keystroke

Display

1. Press ON/OF button.

The display briefly shows
the header name and full
scale range of the unit in the
last engineering units
selected. The manometer
then goes into the Measure
Mode where the applied
pressure and engineering
unit of measure are
displayed.

2. Connect the HHP360
to a vacuum source
capable of a vacuum of
100 microns absolute
pressure or less.

3. Pull a full vacuum.

Display should read close to
zero. (See note on next
page)

4. Press MIN/MAX and
TARE keys at the same
time. (See figure 1
below.)

Top line of display reads
“ZEROING SOURCE:”
Bottom line of display reads
“REF TO ABS ZERO”

5. Press the PRGM key.

Top line of display reads
“ZERO IN PROGRESS”
while bottom line counts
down from 9. Zeroing is
complete when unit returns
to Measure Mode.

Figure 1

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2. To zero the manometer using Factory Zero, start with the
unit turn ON and in Measure Mode and use the following
keystroke sequence:

Keystroke Display

1. Press MIN/MAX and
TARE keys at the
same time. (See
figure 1 above.)

2. Press or arrow
key until desired zero
function is shown on
the bottom line.

3. Press the PRGM key.

NOTE: The HHP360 can be zeroed only if the new applied
zero is within ± 1% FS of the original factory calibration zero.
If outside this limit a “ZERO RANGE ERROR” message
appears and the manometer will not zero. Contact the factory
for support in this case.

3. To zero the manometer using User-Adjusted Zero, start
with the unit turn ON and in Measure Mode and use the
following keystroke sequence:

▲

▲

Top line of display reads
“ZEROING SOURCE:”
Bottom line of display
reads “REF TO ABS
ZERO”

Bottom line of display
reads “FACTORY ZERO”

Zeroing is complete when
unit returns to Measure
Mode.

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Keystroke Display

1. Apply a known,

accurate pressure
source. This may be
true atmospheric
pressure, with known
reference defined by a
local barometer.

2. Press MIN/MAX and

TARE keys at the
same time. (See
figure 1 above.)

3. Press or arrow

key until desired zero
function is shown on
the bottom line.

4. Press the PRGM key. Top line of display shows

5. Press any of or

arrow key or the
PRGM key to begin

editing.

Example: set current
pressure value to 29.5
In Hg @ 0º C.

▲

▲

▲

Top line of display reads
“ZEROING SOURCE:”

Bottom line of display
reads “REF TO ABS
ZERO”

Bottom line of display
reads “USER ADJ.
ZERO”

the current non-zero
compensated pressure
value. Bottom line of
display shows the same
value, along with the
engineering unit.

▲

Top line of display
continuously updates.
Bottom line of display data
is ready for editing; the
first digit is blinking.

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6. Press the or arrow

key to set the first
digit to 0.

Using the UP arrow
key the character
sequence is 0 - 9, (-)
negative, (.) decimal
point. The (-) sign is
used if your location
is below sea level.

▲

▲

Current: xxx.xx
0xx.xx INHG

7. When the digit is

correct press the
PRGM key.

If an error is made use
the back space

to move the cursor
back to the incorrect
digit. Press the UP
or DOWN arrow
keys to display the
correct value.

8. Continue this process

until the display reads
as shown at right.

9. Press the PRGM key

to enter the final
digit.

Note that the User Adjusted Zero feature will not accept
entries in altitude units (FEET or METERS). When the current
engineering unit is FEET, the User Adjusted Zero function
will automatically prompt for an entry in Inches of Mercury @
0º C. When the current engineering unit is METERS, the User
Adjusted Zero function will automatically prompt for an entry
in Millimeters of Mercury @ 0º C.

key

▲

Cursor flashes to the right
of “0”.

▲

Current: xxx.xx

029.50 INHG

Zeroing is complete when
unit returns to Measure
Mode.

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