TPI 620 Dual Differential Input Manometer, 4 Digit LCD, +/-0.5 percent Accuracy, 0.01" H2O Resolution, +/-80" H2O Range

Temperature compensated to ensure repeatable measurements; Over-pressure protected to 200 in H2O. Dual input enables differential measurements. Autoranging provides high resolution and accuracy at low pressure where it is needed. Record/min/max. Trim mode to stabilize readings. -15 to 48 in H2O range. +/- 1/2 percent of reading + 5 digits accuracy. 0.01 in H2O resolution. 500 mBar over pressure. 9V power supply. 0 to 80 percent relative humidity. 32 to 104 degree F operating temperature. After 40 minutes auto power off. Adjusting appliance regulators. Setting delivery pressures. Leakage "shut-in" tests. Regulator adjustments for pressure and lock-up tests. Test pressure switch operation on a 2-stage gas furnace in both positive and negative pressures. Static pressures in air ducts for air balancing. Check air filters by measuring pressure drop. RoHS compliant.