Envco – Environmental Equipment

General Specifications
Display Four digit LCD with function indicators
Units of Measure BAR, mBAR, psi, kg/cm2, mm Hg, inches Hg, kPa, feet H2O, inches H2O, cm H2O, and oz in2

Accuracy ±0.3%FS (@ 25°C)
Repeatability ±0.2% to 0.5% FS
Linearity/Hysteresis ±0.3%FS
Combined Accuracy ±1.1%FS

Maximum Pressure 10psi
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 140oF (0 to 60oC); < 80% RH
Operating conditions 32 to 122oF (0 to 50oC); < 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)

Ordering Information
HD700 Range 55.40 inH2O
HD750 Range 138.3 inH2O
HD755 Range 13.85 inH2O

HD700-NIST ..HD700 with NIST Certificate
HD750-NIST ..HD750 with NIST Certificate
HD755-NIST ..HD755 with NIST Certificate