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WET OR DRY MANOMETER
SINGLE OR DIFFERENTIAL INPUT
±800 inH2O (±29 psi)
HHP91 shown
slightly smaller
than actual size.
HHP91
U 8 User-Selectable Units:
psi, mbar, kg/cm2, mmHg,
inHg, mH2O, inH2O, atm
U Measures Up to
±2000 mbar (±29 psi)
U Auto Shut-Off Function
Prolongs Battery Life
U Built-In Tilt Stand
U Reading Hold
U Stores Minimum and
Maximum Readings with
Pushbutton Recall
U Compatible with Air
or Non-Corrosive and
Non-Ionized Gases
and Liquids
See Section Y for a
Selection of Scientific,
Technical, and Reference
Books Available from
omega.com
The HHP91 is a precision
manometer for automotive, HVAC,
laboratory, and general industrial
applications. It has a built-in
sensor with dual inputs for gage or
differential pressure measurements
and is compatible with air or noncorrosive and non-ionized gases
and liquids. Eight user-selectable
pressure units facilitate use of the
HHP91 with all measuring systems.
The display is easy-to-read, with
15 mm (0.6") high digits.
SPECIFICATIONS
Units: psi, mbar, kg/cm2, mmHg, inHg,
mH2O, inH2O, atm
Functions: Auto-off (after approx.
20 min), reading hold, min and max
Accuracy: ±2% FS @23 ±5ºC, includes
linearity, repeatability and hysteresis
Operating Temperature:
0 to 50ºC (32 to 122ºF)
Operating Humidity:
<80% RH (non-condensing)
Power: 9V alkaline battery (included)
Sampling Time: Approx. 0.8 s
Pressure Ports: Quick-disconnect plug
for 3 to 4 mm ID tubing
Dimensions: 185 H x 78 W x 38 mm D
(7.2 x 3.0 x 1.4")
Weight: 345 g (0.8 lb)
Two quick-disconnect
tube fittings included.
UNIT MAX RANGE RESOLUTION DISPLAY
mbar ±2000 1 m bar
psi ±29 0.02 Psi
2
kg/cm
mmHg ±1500 1 mm/Hg
inHg ±59.05 0.05 in/Hg
mH
inH
atm ±1.974 0.001 ATP
±2.040 0.001 Kg/cm
O ±20.40 0.01 m H2O
2
O ±802 0.5 inch H2O
2
2
To Order Visit omega.com/hhp91 for Pricing and Details
MODEL NO. DESCRIPTION
HHP91 Wet/dry manometer
Comes complete with 2 quick-disconnect tube fittings, 9V battery, hard carrying case and
operator’s manual.
Ordering Example: HHP91, manometer.
A-7