User Manual

HD755 V1.1 08/08
6
Specifications
General Specifications
Display Four digit LCD with function indicators
Units of Measure BAR, mBAR, psi, kg/cm
2
, mm Hg, inches Hg, kPa, feet H
2
O,
inches H
2
O, cm H
2
O, and oz in
2
Accuracy ±0.3%FS + 1d (@ 25°C)
Repeatability ±0.2% to 0.5% FS
Linearity/Hysteresis ±0.3%FS
Maximum Pressure 2psi
Response time 0.5s typical
Input circuit Differential inputs (P1 and P2)
Input Ports Two metal 4.8mm, barbed for 1/8" (3.17mm) ID tubing
Data Hold Freezes displayed reading
Sensor Built-in piezoelectric sensors
Zero / Offset function Pushbutton activation
Sample rate 0.5 sec. (approx.)
Compatibility Air or non-corrosive and non-ionized gas (not intended for
use with liquids)
Auto Power OFF Meter turns off after approx. 20 minutes to conserve energy
(can be deactivated)
PC Interface Built-in USB serial interface
Storage conditions 14 to 140
o
F (0 to 60
o
C); < 80% RH
Operating conditions 32 to 122
o
F (0 to 50
o
C); < 80% RH
Battery power 9V alkaline battery (BAT low battery indicator)
Battery life 125 hours typical
Dimensions 8.2 x 2.9 x 1.9” (210 x 75 x 50mm)
Weight 9.8oz (280g)
Range Specifications
Range/Units (Max.) Resolution
± 0.034 bar
0.001
± 34.47 mbar
0.01
± 0.500 psi
0.001
± 0.035 Kg/cm
2
0.001
± 25.86 mm Hg
0.01
± 1.018 inches Hg
0.001
± 3.447 kPa
0.001
± 1.154 feet H
2
O
0.001
± 13.85 inches H
2
O
0.01
± 35.15 cm H
2
O
0.01
± 8.00 oz in
2
0.01
Warning: Pressure inputs of 10 psi or higher will damage the instrument. Do not
apply pressure higher than the maximum pressure listed in the specification table