476A & 478A - Digital manometers

Selectable engineering units, auto zero, hold and min / max function.
It can be used to set, adjust pressures, check pressure switches, set pressure regulators and check pneumatic circuits.

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SKU Model Description Price Quantity
7811 476A & 478A - Digital manometers - 476A-0

Digital manometer.
Range: -20,0 to +20,0" H2O (-49 to + 49,0 mBAR).

117 EUR
6152 476A & 478A - Digital manometers - 478A-0

Digital differential manometer.
Range: -4,0 to +4,0" H2O (-9,96 to + 9,96 mBAR).

204 EUR
7672 476A & 478A - Digital manometers - 478A-1

Digital differential manometer.
Range: -60,0 to +60,0" H2O (-149,5 to + 149,5 mBAR).

158 EUR


Ideal for field or laboratory use, the model 476A single pressure digital manometer measures low pressures from -20 to 20˝ w.c. with ±1.5% full scale accuracy. Designed especially for the HVAC contractor, the Model 476A can be used to set supply pressures, verify pressure switch operation, adjust regulators, check pneumatic systems and computer peripherals. The rugged, handheld unit is constructed with an extruded aluminum case for exceptional durability. The Series 478A manometer can be used to measure positive, negative, or differential pressures. The unit features selectable units, auto zero, hold and a Min/Max function. Press the Hold key to freeze the current pressure measurement on the display. The 478A manometer includes a zeroing button to null out any minor pressure differences.

Service: air and compatible gases.
Wetted materials: consult factory.
Accuracy: ±1.5% f.s. at 72°F (22.2°C). Includes linearity and repeatability.
Pressure hysteresis: ±0.1% of f.s.
Pressure limits: 5 psig (.74 bar).
Temperature limits: 0 to 140°F (-17.8 to 60°C).
Compensated temperature limits: 32 to 104°F (0 to 40°C).
Thermal effect: 0.05% f.s./°F.
Display: 4 digit LCD (.425˝H x .234˝W digits).
Power requirements: 9V alkaline battery. Battery included but not  connected.
Process connections: for use with 3/16˝ or 1/4˝ I.D. tubing.
Weight: 10.8 oz (306 g).
Agency approvals: CE.



SKU Model Description Price Quantity
Differential Pressure Certificate Ref. UKAS/ACCREDIA

UKAS/ACCREDIA Traceable Certificate for DIFFERENTIAL PRESSURE on 3-point check: low range, mid-scale, full scale.


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