Series 475

Mark III Handheld Digital Manometer Ranges from 1 in. w.c. to 150 psid, ±0.5% Accuracy.

New LOW Range Option 0-1.00 in. w.c. Measures Positive, Negative and Differential Pressures Rugged, Extruded Aluminum Case Lightweight, Fast and Easy to Use Dual Calibration with English and Metric Units Applications The Dwyer Series 475 Mark III Handheld Digital Manometer 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. Its 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 Pitot tube (see Air Velocity), the Series 475 Mark III can also be used as an air velocity gage. See the complete 475-1-FM-AV kit described below. 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. A standard 9 volt battery provides up to 100 hours of operation. Dual push pads on the front panel control on-off operation and English or metric pressure unit selection. No setup or leveling. Zero adjust knob is conveniently located on top. The large 1/2" 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.

Service Manual Catalog Page SPECIFICATIONS Service: Air and combustible, compatible gases. Wetted Materials: Consult Factory. 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: 32 to 104°F (0 to 40°C). Storage Temperature Limits: -4 to 176°F (-20 to 80°C). Display: 0.5" liquid crystal. 3-1/2 digits. Resolution: See chart. Power Requirements: 9 volt alkaline battery. Battery not connected. Weight: 10.8 oz. (306 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 3/16" (4.76 mm) O.D. tubing for 475-7-FM & 475-8-FM only. Agency Approvals: FM,CE.

A-402A CARRYING CASE Tough gray nylon pouch protects any Series 475 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 (191X 76 X 57 mm)

475-AV AIR VELOCITY KIT - Includes your choice of Series 475-FM Manometer, two A-303 static pressure tips, two 9 ft. lengths 3/16" I.D. rubber tubing, no. 166-6-CF Pitot tube, A-397 step drill, A-532 air velocity slide chart and instruction bulletin H-11, all packed in a tough, molded plastic carrying case with die cut foam liner. To order, add AV suffix to any standard 475 model no. ACCESSORIES Model Number Description Price  A-402A  7-1/2"H X 3"W X 2-1/4"D (191 X 76 X 57 mm)   $24.50

POPULAR MODELS

POPULAR MODELS

Model Number	Description	Price
475-000-FM-AV	Air Velocity Kit	$375.00
475-00-FM-AV	Air Velocity Kit	$345.00
475-0-FM-AV	Air Velocity Kit	$345.00
475-1-FM-AV	Air Velocity Kit	$345.00

Series 477

Handheld Digital Manometer   Selectable Pressure Units, ±0.5% Accuracy, FM Approved Intrinsically Safe for Hazardous Locations, Class 1, Div. 1, Group A, B, C, D, T4

• Instant Selection from up to Nine English/Metric Units. • Stores 20 Readings in Memory for Later Reference. • Measures Positive, Negative or Differential Pressures. • Large Easy-to-Read 0.4" LCD Display Includes Switchable    Backlight for Great Visibility-Anywhere! • Both Audible and Visual Overpressure Alarms. • Includes + and - Indicators plus Low Battery Warning. • Operates up to 100 Hours on one 9 Volt Battery. • FM Approved 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. Now you can instantly select from up to nine popular pressure units without having to waste time with tedious conversions. Plus, a versatile non-volatile memory function enables storage of up to 20 readings - perfect for HVAC technicians making Pitot tube traverses of airflow readings accross a duct. A display HOLD key temporarily freezes the current value for situations where pressure fluctuates. To protect against overpressure, both usual and audible alarms are included. Audible alarm also sounds to indicate a value has been stored in memory. PRESSURE UNITS AVAILABLE Model Number PSID IN H20 MM H20 IN Hg MM Hg Pa kPa bar Mbar 477-1 477-2 477-3   477-4   477-5     POPULAR MODELS Model Number English Range Metric Range Max. Pressure Price  477-1-FM  0-20 in w.c.  0-5 kPa  11 psi (0.75 bar)   $285.00  477-2-FM  0-40 in w.c.  0-10 kPa  11 psi (0.75 bar)   $285.00  477-3-FM  0-200 in w.c.  0-50 kPa  29 psi (1.99 bar)   $285.00  477-4-FM  0-10 psid  0-70 kPa  58 psi (3.99 bar)   $285.00  477-5-FM  0-30 psid  0-200 kPa  58 psi (3.99 bar)   $285.00  477-6-FM  0-100 psid  0-700 kPa  150 psi (10.3 bar)   $285.00  477-7-FM  0-150 psid  0-1000 kPa  200 psi (13.7 bar)   $285.00

Service Manual Catalog Page SPECIFICATIONS Service: Air and combustible, compatible gases. Wetted Materials: Consult Factory. 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: 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) 4-1/2" digit liquid crystal. Resolution: See chart. Power Requirements: 9 volt alkaline battery. Battery included but not connected. 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 3/16" (4.76 mm) O.D. tubing for 477-6-FM & 477-7-FM only. Agency Approvals: FM, CE.   A-402 CARRYING POUCH — Tough gray nylon pouch protects any Series 477 Manometer. Double zippered for quick and easy access. With belt loop that snaps closed. 72"H x 3"W x 24"D (191 x 76 x 57 mm ACCESSORIES Model Number Description Price  A-402A  7-1/2"H X 3"W X 2-1/4"D (191 X 76 X 57 mm)   $24.50

Series HM28

Handheld Digital Manometer   High Accuracy (0.2%, 0.1% or 0.05%), Differential, Gage or Absolute

STANDARD FEATURES • Microprocessor based • Differential, Gage, or Absolute • High Accuracy, 0.2%, 0.1%, or 0.05% with Calibration Certificate • Selectable Scales • Resolution to 0.000 of Selected Unit • Peak and Valley Indication • Hold Function • Programmable Display • Memory for up to 964 Readings • Output for Optional Printer or Computer Interface

Catalog Page

The Love Controls Series HM28 Digital Hand-Held Manometer is a precision instrument designed to measure a wide range of pressures to a very high accuracy. The unit incorporates a variety of features in an easy to use format that makes it useful in a wide variety of applications. Features include: measurement in all common pressure ranges, display resolution to 0.001, differential or relative measurement, two line liquid crystal display, and adjustable auto power off to conserve battery. We are so proud of the accuracy of the HM28 that we provide a certificate of calibration with the unit at no additional cost. Depending on your application, the HM28 can be used as a secondary calibration standard for your other pressure instrumentation.   INPUT RANGES RANGE (US) RANGE (METRIC) OVERPRESSURE Gauge, underpressure and differential pressure 0-10 in H2O 0-2.5 kPa 12.5 kPa (50 in H2O) 0-28 in H2O 0-7 kPa 35.0 kPa (140 in H2O) 0-80 in H2O 0-20 kPa 150 kPa (600 in H2O) 0-120 in H2O 0-30 kPa 150 kPa (600 in H2O) 0-200 in H2O 0-50 kPa 400 kPa (1600 in H2O) 0-14.5 psi 0-100 kPa 400 kPa (58 psi) 0-29 psi 0-200 kPa 700 kPa (100 psi) 0-100 psi 0-700 kPa 1700 kPa (246 psi) 0-145 psi 0-1000 kPa 2700 kPa (390 psi) 0-245 psi 0-1700 kPa 2700 kPa (390 psi) for Gauge, media compatible with 18/8 SS (DIN 1.4305) 0-14.5 psi 0-100 kPa 200 kPa (29 psi) 0-29 psi 0-200 kPa 400 kPa (58 psi) 0-100 psi 0-700 kPa 1400 kPa (203 psi) 0-145 psi 0-1000 kPa 3400 kPa (493 psi) 0-245 psi 0-1700 kPa 3400 kPa (493 psi) 0-435 psi 0-3000 kPa 7000 kPa (1015 psi) 0-1000 psi 0-7000 kPa 14000 kPa (2030 psi)

SPECIFICATIONS Service: Clean, dry air or compatible gases. Wetted Materials: 18/8 stainless steel. Accuracy (includes linearity, hysteresis, and repeatability): per order code.    ±0.20% full scale ±1 digit    ±0.10% full scale ±1 digit    ±0.05% full scale ±1 digit Display: 2 line, 16 character, dot matrix LCD, with switchable display sizes. Temperature Limits: 23 to 122°F (-5 to +50°C). Power Requirements: 9V alkaline (included). Can operate from external power supply of 7 to 14 VDC. Storage Temperature: -4 to +140°F (-20 to +60°C). Humidity: 30 to 95% rH, non-condensing. Pressure Connection: Hose; 4/6mm or 1/8" NPT. Case Protection: IP54. Case Dimensions: 6 x 3.27 x 1.34 in (152 x 83 x 34 mm). Weight: 9.5 oz (270 g). Memory: 964 measured values. Recording intervals adjustable from manual, 1, 5, 10, 20, 30 seconds, 1, 2, 3, 5, 10, 30, 60 minutes. Maximum Measurement Rates: Stand alone: 2-1/2 readings/sec (0.1% and 0.05% ratings), 5 readings/sec (0.2% rating). Output to RS-232: 20 measurements/sec (0.2% rating). 10 measurements/sec (0.1% and 0.05% ratings). RS-232 Baud Rate: Adjustable, 1200, 2400, 4800, or 9600 baud. Agency Approvals: CE.

POPULAR MODELS Model Number Features Price  HM28D3B10000  0-10 in H20 (2.5 kPa)   $498.00  HM28D3C10000  0-28 in H20 (7 kPa)   $498.00  HM28D3F10000  0-120 in H20 (30 kPa)   $498.00  HM28D3H10000  0-14.5 in H20 (100 kPa)   $498.00 Model Number Features Price  HM28D3C30000  0-28 in H20 (7 kPa)   $752.00  HM28D3F30000  0-120 in H20 (30 kPa)   $752.00  HM28D3H30000  0-14.5 psi H20 (100 kPa)   $752.00  HM28D3K30000  0-100 psi (100 kPa)   $752.00  HM28D3M30000  0-245 psi (100 kPa)   $752.00 Model Number Features Price  HM28A3l30000  0-15.9 pisa (0.2% F.S. (110 kPa abs)   $760.00 ACCESSORIES Model Number Description Price  HM28-1  Communication Software & Cable   $280.00

Series 490

Wet/Wet Handheld Digital Manometer Liquid & Gas Pressure Measurement, ±0.5% F.S. Accuracy

Service Manual Catalog Page

Measures Virtually any Liquid Media Compatible with 316L Stainless Steel. Instant Selection from up to Seven English/Metric Units. Stores 20 Readings in Memory for Later Reference. Both Audible and Visual Overpressure Alarms. Operates up to 100 Hours on a Single 9 Volt Battery Series 490 Digital Manometers are versatile, hand-held, battery operated manometers available in several basic ranges from 0-15.0 psi (0-100 kPa) to 0-100 psi (0-700 kPa). Units are highly accurate (±0.5% FS) for positive or positive differential pressure measurement and can tolerate most any liquid media compatible with 316L stainless steel. You can select from up to seven common English and metric pressure units (PSI, in. H2O, in. Hg, mm Hg, kPa, bar or mbar) so conversions are not necessary. A memory function allows storage of up to 20 readings for later recall and a backlight provides auxiliary lighting for hard-to-see locations. Standard are a hold feature and both visual and audible overpressure alarms. A 9V alkaline battery is included that provides up to 100 hours of operation. Units have dual 1/8" female NPT connections. POPULAR MODELS Model Number English Range Metric Range Maximum Pressure Price  490-1  0-15 psi  0-100 kPa  30 psi (2.7 bar)   $441.00  490-2  0-30 psi  0-200 kPa  60 psi (4.13 bar)   $441.00  490-3  0-50 psi  0-350 kPa  120 psi (6.89 bar)   $441.00  490-4  0-100psi  0-700 kPa  200 psi (13.78 bar)   $441.00  490-5  0-500.0 psi  0-3450 kPa  1000 psi (68.9 bar)   $441.00

SPECIFICATIONS Service: Compatible, non-combustible gases & liquids. Wetted Materials: Type 316L SS. 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: 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) 4-1/2 digit liquid crystal. Resolution: See chart. Power Requirements: 9 volt alkaline battery. Battery included but not connected. Weight: 14.1 oz. (400 g). Connections: Two 1/8" (3.18 mm) female NPT. Agency Approvals