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Handheld digital manometer3

Original price was: $315.48.Current price is: $224.70.

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SKU: 475-1-FM Category:
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Specifications(PDF)

The Dwyer® Series 475Mark III Handheld Digital Manometer is ideal forfield calibration, monitoring or trouble shooting HVACsystems, clean rooms or a wide range of other lowpressure pneumatic systems. This handy instrumentmeasures positive, negative or differential pressures ofair and natural gases in ranges from 1″ w.c. (0.249kPa) to 150 psid (10.34 bar). The Series 475-FM isapproved and is intrinsically safe for hazardouslocations, Class 1, Div.1, Group A, B,C, D, T4. Itssimple operation and easy to read digital display makeit an indispensable test instrument for the plantengineer, industrial hygienist and HVAC technician. Whenused with a Dwyer® Pitot tube, the Series 475 Mark IIIcan also be used as an air velocity gage.

The Series 475-FM MarkIII is housed in a durable extruded aluminum case withits solid state circuitry mounted on a tough fiberglassepoxy circuit board. To meet the most demandingapplications and to provide stability of instrumentreading, the 1″ w.c. range is compensated forposition sensitivity through use of a unique patenteddual sensor system. A standard 9 volt battery providesup to 100 hours of operation. Dual push pads on thefront panel control on-off, auto zero, and pressure unitselection. No setup or leveling. The large 0.42″LCD display is easy to read, minimizing data collectionerrors. Units include a “low battery”indicator. The pressure sensor used is a highly stablesilicon piezoresistive device. Standard connections aredual sized for 1/8″ or 3/16″ I.D. vinyl orrubber tubing. Complete instructions are convenientlyprinted on rear of housing.

Also available is theconvenient all-in-one kit (475-AV) is small, lightand easy to use. No set-up or leveling needed. Includedis a Pitot tube, two static pressure tips with magneticmounting measure pressure drop across filters, condensercoils, etc. Kit comes complete with rubber tubing, 9Vbattery, step drill, AV calculator slide rule, andcustom fitted carrying case. An indispensable test kitfor the plant engineer, industrial hygienist and HVACtechnician

: Air and compatible combustiblegases.Wetted Materials: Consultfactory.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% offull scale.Pressure Limits: See Orderingpage.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: -4to 176°F (-20 to 80°C).Display: 0.42″ (10.6 mm)4-digit LCD.Resolution: See Ordering page.Power Requirements: 9 voltalkaline battery. Battery not connected.Weight: 10.8 oz. (306 g).Connections: Two barbedconnections for use with 1/8″ (3.18 mm) or 3/16″ (4.76mm) 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 475-7-FM& 475-8-FM only.Agency Approvals: FM, CE.

• New Low Range Option0-1.000 in. w.c. • Measures Positive,Negative and Differential Pressures • Rugged, ExtrudedAluminum Case • Lightweight, Fast andEasy to Use • SelectableEnglish/Metric Units • FM Approved

EXAMPLE 475 000 FM AV Series 475-000-FM-AV Mark III Handheld Digital Manometer, range 0-1.000″ w.c., with air velocity kit.
SERIES 475 FM Mark III Handheld Digital Manometer

RANGE
(If ordering -AV
Option, these ranges
will include a Model
166-6-CF Pitot Tube
in the Air Velocity Kit.)

 000
00
0
1
2
3
4
5
6
7
8		 1.000″ w.c. / .2491 kPa
4.000″ w.c. / 0.996 kPa
10.00″ w.c. / 2.491 kPa
20.00″ w.c. / 4.982 kPa
40.00″ w.c. / 9.96 kPa
200.0″ w.c. / 49.82 kPa
10.00 psi / .6895 bar
20.00 psi / 1.379 bar
30.00 psi / 2.069 bar
100.0 psi / 6.895 bar (range not available with -AV Option)
150.0 psi / 10.34 bar (range not available with -AV Option)

RANGE
(You must order -AV
Option with these ranges
and will include a Model
166T Telescoping Pitot
Tube in the Air Velocity Kit.)

 000T
00T
0T
1T
2T
3T
4T
5T
6T		 1.000″ w.c. / .2491 kPa with Telescoping Pitot Tube
4.000″ w.c. / 0.996 kPa with Telescoping Pitot Tube
10.00″ w.c. / 2.491 kPa with Telescoping Pitot Tube
20.00″ w.c. / 4.982 kPa with Telescoping Pitot Tube
40.00″ w.c. / 9.96 kPa with Telescoping Pitot Tube
200.0″ w.c. / 49.82 kPa with Telescoping Pitot Tube
10.00 psi / .6895 bar with Telescoping Pitot Tube
20.00 psi / 1.379 bar with Telescoping Pitot Tube
30.00 psi / 2.069 bar with Telescoping Pitot Tube
OPTIONS AV
NIST		 Air Velocity Kit
NIST Certificate of Calibration
• Field calibration. • Monitoring or trouble shooting HVAC systems. • Clean room checks. • Air velocity monitoring with Dwyer Pitot tube. • Natural gas appliance line pressure.