<a href="http://www.metermall.com" title="MeterMall USA"><img src="https://store.nexternal.com/metermall/MeterMall_Logo.jpg" alt="MeterMall USA" name="MeterMall USA" border="0" /></a><br /> <h1>475 Mk III Digital Differential Manometer -- MeterMall USA Shopping Cart</h1> <b>$235.95</b> -- <i>Digital differential pressure electronic zeroing, large display, Accuracy ± 0.5%</i> <p> <img src="https://store.nexternal.com/metermall/images/475_pic.jpg" align="right" alt="475 Mk III Digital Differential Manometer" name="475 Mk III Digital Differential Manometer" border="0" hspace="10" /> <div align="right"><a target="_top" href="http://www.metermall.com/PDFs/Dwyer/475_iom.pdf">475 Manometer User Manual</a></div> <div align="left">&nbsp;</div> <div align="left"><font color="#c00000"><strong>&nbsp;&nbsp;&nbsp;&nbsp; The Dwyer&#174; Series 475 Mark III Handheld Digital Manometer</strong></font> is ideal for field calibration, monitoring or trouble shooting HVAC systems, clean rooms or a wide range of other low pressure pneumatic systems. This handy instrument measures positive, negative or differential pressures of air and natural gases in ranges from 1 in. w.c. (0.249 kPa) to 150 psid (10.34 bar). The Series 475-FM is approved and is intrinsically safe for hazardous locations, Class 1, Div.1, Group A, B,C, D, T4. </div> <div align="left">&nbsp;</div> <div align="left">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The&nbsp;meter's&nbsp;simple operation and easy to read digital display make it an indispensable test instrument for the plant engineer, industrial hygienist and HVAC technician. When used with a Dwyer&#174; Pitot tube, the Series 475 Mark III can also be used as an air velocity gage. </div> <div align="left">&nbsp;</div> <div align="left">&nbsp;&nbsp;&nbsp;&nbsp; The Series 475-FM Mark III is housed in a durable extruded aluminum case with its solid state circuitry mounted on a tough fiberglass epoxy circuit board. To meet the most demanding applications and to provide stability of instrument reading, the 1" w.c. range is compensated for position sensitivity through use of a unique patented dual sensor system. </div> <div align="left">&nbsp;</div> <div align="left">&nbsp;&nbsp;&nbsp;&nbsp; A standard 9 volt battery provides up to 100 hours of operation. Dual push pads on the front panel control on-off, auto zero, and pressure unit selection. No setup or leveling. The large 0.42" LCD display is easy to read, minimizing data collection errors. Units include a "low battery" indicator. The pressure sensor used is a highly stable silicon piezoresistive device. Standard connections are dual sized for 1/8" or 3/16" I.D. vinyl or rubber tubing. Complete instructions are conveniently printed on rear of housing.</div> <div>&nbsp;</div> <div><img height="1" border="0" width="176" src="http://www.dwyer-inst.com/images/clearpixel.gif" /></div> <font color="#c00000"><strong>Features of Dwyer&nbsp;475 Mk III&nbsp;Digital Manometer Pressure Gauge</strong></font><img height="1" border="0" width="176" src="http://www.dwyer-inst.com/images/clearpixel.gif" /><div align="left" id="ProdHlt"><ul> <li><div align="left" id="ProdHlt"><div align="left" id="ProdHlt">New Low Range Option 0-1.000 in. w.c.</div> </div> </li> <li><div align="left" id="ProdHlt"><div align="left">Measures Positive, Negative and Differential Pressures</div> </div> </li> <li><div align="left" id="ProdHlt"><div align="left">Rugged, Extruded Aluminum Case</div> </div> </li> <li><div align="left" id="ProdHlt"><div align="left">Lightweight, Fast and Easy to Use</div> </div> </li> <li><div align="left" id="ProdHlt"><div align="left">Selectable English/Metric Units (inches w.c. / kPa or bar)</div> </div> </li> <li><div align="left" id="ProdHlt"><div align="left">FM Approved</div> </div> </li> </ul> </div> <div align="left" id="ProdHlt"><font color="#c00000"><strong>Specifications of the Dwyer&nbsp;475 Handheld Differential Pressure Gage</strong></font></div> <ul> <li><div align="left" id="ProdHlt">Service: Air and compatible combustible gases.</div> </li> <li><div align="left" id="ProdHlt">Wetted Materials: Consult factory.</div> </li> <li><div align="left" id="ProdHlt">Accuracy: &#177;0.5% F.S., 60 to 78&#176;F (15.6 to 25.6&#176;C); &#177;1.5% F.S. from 32 to 60&#176;F and 78 to 104&#176;F (0 to 15.6&#176;C and 25.6 to 40&#176;C).</div> </li> <li><div align="left" id="ProdHlt">Pressure Hysteresis: &#177;0.1% of full scale.</div> </li> <li><div>Pressure Limits: See Ordering page.</div> </li> <li><div>Temperature Limits: 0 to 140&#176;F (-17.8 to 60&#176;C).</div> </li> <li><div>Compensated Temperature Limits: 32 to 104&#176;F (0 to 40&#176;C).</div> </li> <li><div>Storage Temperature Limits: -4 to 176&#176;F (-20 to 80&#176;C).</div> </li> <li><div>Display: 0.42" (10.6 mm) 4-digit LCD.</div> </li> <li><div>Resolution: See modle/range chart below.</div> </li> <li><div>Power Requirements: 9 volt alkaline battery. Battery not connected.</div> <div align="left" id="ProdHlt">Weight: 10.8 oz. (306 g).</div> </li> <li><div align="left" id="ProdHlt">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 475-7-FM &amp; 475-8-FM only.</div> </li> <li><div align="left" id="ProdHlt">Agency Approvals: FM, CE.</div> </li> <li>Warranty 1 year</li> </ul> <div align="left" id="ProdHlt"><font color="#c00000"><strong>The 475 Digital Manometer Series Models and Ranges:</strong></font></div> <ul> <li><div align="left" id="ProdHlt">475-000-FM: 0-1.000" w.c. (.2491 kPa), max. press. 5 psig.</div> </li> <li><div align="left" id="ProdHlt">475-00-FM: 0-4.000" w.c. (0.996 kPa), max. press. 5 psig.</div> </li> <li><div align="left" id="ProdHlt">475-0-FM: 0-10.00" w.c. (2.491 kPa), max. press. 5 psig.</div> </li> <li><div align="left" id="ProdHlt">475-1-FM: 0-20.00" w.c. (4.982 kPa), max. press.&nbsp;10 psig.</div> </li> <li><div align="left" id="ProdHlt">475-2-FM: 0-40.00" w.c. (9.96 kPa), max. press.&nbsp;10 psig.</div> </li> <li><div align="left" id="ProdHlt">475-3-FM: 0-200.0" w.c. (49.82 kPa), max. press.&nbsp;30 psig.</div> </li> <li><div align="left" id="ProdHlt">475-4-FM: 0-10.00 psi (.6895 bar), max. press.&nbsp;30 psig.</div> </li> <li><div align="left" id="ProdHlt">475-5-FM: 0-20.00 psi (1.379 bar), max. press.&nbsp;60 psig.</div> </li> <li><div align="left" id="ProdHlt">475-6-FM: 0-30.00 psi (2.069 bar), max. press.&nbsp;60 psig. </div> </li> <li><div align="left" id="ProdHlt">475-7-FM: 0-100.0 psi (6.895 bar), max. press.&nbsp;150 psig. </div> </li> <li><div align="left" id="ProdHlt">475-8-FM: 0-150.0 psi (10.34 bar), max. press.&nbsp;200 psig.</div> </li> </ul> <div align="left" id="ProdHlt"><font color="#c00000"><strong>Order&nbsp;Accessories below:</strong></font></div> </p> <p> <ul style="padding-left: 15px"> <li>SKU: 475</li> <li>Choose Measuring Range: 475-000-FM: 0-1.000" w.c. (.2491 kPa); 475-00-FM: 0-4.000" w.c. (0.996 kPa); 475-0-FM: 0-10.00" w.c. (2.491 kPa); 475-1-FM: 0-20.00" w.c. (4.982 kPa); 475-2-FM: 0-40.00" w.c. (9.96 kPa); 475-3-FM: 0-200.0" w.c. (49.82 kPa); 475-4-FM: 0-10.00 psi (.6895 bar); 475-5-FM: 0-20.00 psi (1.379 bar); 475-6-FM: 0-30.00 psi (2.069 bar); 475-7-FM: 0-100.0 psi (6.895 bar); 475-8-FM: 0-150.0 psi (10.34 bar)</li> </ul> </p> <p><b>Other products in the category <a href="http://store.metermall.com/Category15" title="Pressure Meters">Pressure Meters</a> / <a href="http://store.metermall.com/Category52" title="Digital Differential Manometers">Digital Differential Manometers</a>:</b> <br clear="left"><br /><ul style="padding-left: 15px"><li> <a href="http://store.metermall.com/Product168" title="475-1T-FM-AV Air Velocity Kit">475-1T-FM-AV Air Velocity Kit</a> -- Convenient all-in-one Air Velocity Kit is small, light and easy to use. No set-up or leveling needed. Digital manometer reads from 0-19.99 in. w.c. with ±0.5% F.S. accuracy and minor divisions to 0.01. 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The 477A contains a highly accurate differential pressure sensor . . .</li></ul> <br clear="left"><br /><ul style="padding-left: 15px"><li> <a href="http://store.metermall.com/Product173" title="477-FM Dwyer Digital Manometer">477-FM Dwyer Digital Manometer</a> -- 477 Manometer User Manual &nbsp; &nbsp;&nbsp;&nbsp;&nbsp; Series 477 Handheld Digital Manometers are packed with features you need to make low pressure measurement and recording faster, easier and more accurate than ever. First, you can instantly select . . .</li></ul> <br clear="left"><br /><ul style="padding-left: 15px"><li> <a href="http://store.metermall.com/Product174" title="477-USB Dwyer Digital Manometer w/ USB Interface">477-USB Dwyer Digital Manometer w/ USB Interface</a> -- 477 Manometer User Manual &nbsp; &nbsp;&nbsp;&nbsp;&nbsp; Series 477-USB Handheld Digital Manometers are packed with features you need to make low pressure measurement and recording faster, easier and more accurate than ever. First, you can instantly . . .</li></ul> <br clear="left"><br /><ul style="padding-left: 15px"><li> <a href="http://store.metermall.com/Product170" title="478A Digital Differential Manometer">478A Digital Differential Manometer</a> -- The Series 478A Dwyer 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. . . .</li></ul> <br clear="left"><br /><ul style="padding-left: 15px"><li> <a href="http://store.metermall.com/Product177" title="HM28 Hand-Held Digital Manometer">HM28 Hand-Held Digital Manometer</a> -- HM28 Manometer User Manual &nbsp; &nbsp;&nbsp;&nbsp;&nbsp; The Dwyer®&nbsp;Love®&nbsp;HM28 Handheld Digital Manometer is a precision instrument designed to measure a wide range of pressures to a very high accuracy. 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This family of manometer . . .</li></ul> <br clear="left"><br /><ul style="padding-left: 15px"><li> <a href="http://store.metermall.com/Product182" title="HM35 Gauge Pressure Manometer Data Logger">HM35 Gauge Pressure Manometer Data Logger</a> -- HM35 Manometer User Manual &nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; The High Precision Series HM35 Digital Manometer is designed to reliably measure and log pressure measurements for critical applications. 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