Gauge Pressure Difference Meter   Features: 1. Measuring range: PM-9107: 0~7000mbar (mbar) 2. Dual pressure sensors, which can measure pressure and differential pressure 3. Accuracy: ±2% 4. Dual pressure sensors, which can measure pressure and differential pressure 5. Eight kinds of unit selection switch: mbar,psi,Kg/cm?,mm/Hg,inch/Hg meter/H2O,inch/H2O,Atmosphere 6. Lock the reading and record the maximum/minimum value in the measurement 7. RS-232/USB computer connection (optional) 8. Size: 180×72×32mm           Sepecifications:                 Monitor      Character height 15mm (0.6") 61mm x 34mm LCD screen              Sampling time      about 0.8 seconds              Operating ambient temperature      0 to 50& 8451; (32 to 122& 8457;)              Operating environment humidity      Below 80%RH              Working power      DC9V~30V              weight      345g/0.76lb              Size      180 x 72 x 32mm(7.1 x 2.8 x 1.3inch)                                  Unit      Maximum range      Resolution      Accuracy              mbar      7000 mbar      5 mbar      ±2% full scale              psi      101.5psi      0.5psi              Kg/cm^2      7.135Kg/cm^2      0.005Kg/cm^2              mm/Hg      5250mm/Hg      5mm/Hg              inch/Hg      206.7inch/Hg      0.1inch/Hg              meter/H2O      71.35meter/H2O      0.05meter/H2O              inch/H2O      2810inch/H2O      2inch/H2O              Atmosphere      6.905Atmosphere      0.005Atmosphere                      Notice: