477 – Handheld differential digital manometer
30.00 € – 285.00 €
First, you can instantly select from up to nine of the most widely used pressure units without having to waste time and risk mistakes with tedious conversions. Next, a non-volatile memory function enables storage of up to 40 readings – perfect for HVAC technicians making Pitot tube traverses of airflow readings across a duct. The Series 477 is FM approved intrinsically safe for hazardous locations, Class 1, Div. 1, Group A, B, C, D, T4.
When working in poorly lighted areas, just switch on the handy backlight feature. It automatically shuts itself off after 20 minutes to minimize battery drain. Electronic zeroing means you simply touch a single key to perfectly null out any minor pressure differences. A display HOLD key freezes the current pressure for those all-too-common situations where readings fluctuate. We even included an audible alarm to warn you of overpressure plus a visual alarm also confirms a value has been stored, eliminating the need to observe display during a duct traverse.
Service: air and compatible gases. FM models air and compatible combustible gases.
Accuracy: ±0.5% F.S., 60 to 78°F (15.6 to 25.6°C); ±1.5% F.S. from 32
to 60°F and 78 to 104°F (0 to 15.6°C and 25.6 to 40°C).
Pressure hysteresis: ±0.1% of full scale.
Pressure limits: see chart.
Temperature limits: 0 to 140°F (-17.8 to 60°C).
Compensated Temperature limits: 32 to 104°F (-0 to 40°C).
Storage Temperature limits: -4 to 176°F (-20 to 80°C).
Display: 0.42˝ (10.6 mm) 4 digit LCD.
Response time: 1 seconds.
Resolution: See chart.
Power requirements: 9 volt alkaline battery. Battery included but not
Weight: 10.2 oz (289 g).
Connections: Two barbed connections for use with 1/8˝ (3.18 mm) or
3/16˝ (4.76 mm) I.D. tubing. Two compression fittings for use with 1/8˝
(3.18 mm) I.D. x 1/4˝ (6.35 mm) O.D. tubing for 477-7-FM & 477-8-FM
Agency Approvals: CE and FM
A-402A Carrying Case – Tough gray nylon pouch protects any Series 477 and 476A Manometer. Double zippered for quick and easy access. With belt loop that snaps closed. 7-1/2˝H x 3˝W x 2-1/4˝D (191 x 76 x 57 mm).