407910-EN v2.3 3/14
2
Introduction
Congratulations on your purchase of the Extech Manometer Model 407910. This device has a
differential input with convenient quick-disconnect fittings. Eight units of measure are selectable by
front panel pushbutton. Advanced features include Data hold, MAX/MIN record/recall, and RS-232
PC interface. Properly used, this device will provide years of reliable service.
Specifications
General Specifications
Circuit Custom one-chip LSI microprocessor circuit
Display 0.6" (15mm) 6000 count LCD with function indicators
Units of Measure mBAR, psi, kg/cm
2
, mm Hg, inches Hg, meter H
2
O, inches H
2
O and
Atmospheres
Input circuit Differential inputs (P1 and P2)
Data Hold Freezes displayed reading
Sensor Built-in piezoelectric sensors
Zero Adjust Front panel push-button
Sample rate 0.8 sec. (approx.)
Compatibility Air or non-corrosive and non-ionized gas
Auto Power OFF Meter turns off after approx. 10 minutes to conserve energy
Data Output RS-232 PC serial interface
Ambient conditions 32 to 122
o
F (0 to 50
o
C); < 80% RH
Battery power 9V alkaline battery
Power Consumption 8mA DC (approx.)
Dimensions 7.1 x 2.8 x1.3" (180 x 72 x 32 mm)
Weight 0.46 lbs (210 g) meter only
Accessories Quick-disconnect fittings (2), rubber jacket, and 9V battery
Range Specifications
Range/Units (Max.) Resolution
Accuracy
± 2000 mbar 1
± 2% full scale @ 23±5
o
C
Note: Accuracy includes linearity,
hysteresis and repeatability effects
± 29 psi 0.01
± 2.040 Kg/cm
2
0.001
± 1500 mm Hg 1
± 59.06 inches Hg 0.02
± 20.40 meters H
2
O 0.01
± 802 inches H
2
O 0.5
± 1.974 atmospheres 0.001
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