Brandt Instruments Representing Dwyer 477-FM Intrinsically safe PDM meters

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Dwyer 477-FM Portable Digital Manometers, Intrinsically Safe PDM, Differential Pressure, Velocity Meters

Dwyer 477-FM Portable Digital Manometers
Intrinsically Safe PDM
Differential Pressure and Velocity Meters
CE and FM Mark Symbols

Dwyer Series 477-FM Intrinsically Safe Portable Digital Micromanometers - PDM -


The Dwyer Series 477-FM Digital Manometers
Intrinsically Safe with ±0.5% Accuracy

The Series 477-FM portable digital micromanometers (PDM) are packed with features you need to make low pressure measurement and recording faster, easier and more accurate than ever. 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.

      Dwyer 477-FM PDM Features:

  •  11 models with several basic ranges from 0-20" H2O up to 0-150 psid
  •  Large easy-to-read 0.4" LCD display
  •  Includes switchable backlight for great visibility
  •  9 switchable pressure units: psid, inch H2O, mm H2O, inch Hg, mmHg, kPa, Pa, bar, mbar
  •  Measures Positive, Negative or Differential Pressures
  •  Electronic zeroing
  •  ±0.5 % full-scale value
  •  Display HOLD key freezes pressure readings for ease of use
  •  Stores 40 readings in memory
  •  Includes + and - indicators plus low battery warning
  •  Both audible and visual overpressure alarms
  •  Operates up to 100 hours on a single 9 volt battery
  •  FM approved Intrinsically Safe for Hazardous Locations, Class 1, Div. 1, Group A, B, C, D, T4
  •  USB option (non-IS) includes cable and software for easy data downloading

    • Dwyer 477-FM PDM Applications:

  •  Measurement of system pressures in heating, ventilation and air conditioning  (HVAC) systems
  •  Perfect for HVAC technicians performing Pitot tube traverses of airflow readings across a duct
  •  Monitoring differential pressure across filters and coils in HVAC systems
  •  Measuring positive and negative pressure in air conditioning ducts
  •  Measuring differential pressure for clean room monitoring
 


Dwyer 477-FM Models
Kits include: meter, battery and calibration certificate
Maximum Pressure
Part #
Pricing $US
Range: 0-1.0 in H2O, 0-0.249 kPa 5 psi (0.75 bar)
477-000-FM**
346.00
Range: 0-4.0 in H2O, 0-0.996 kPa 5 psi (0.75 bar)
477-00-FM**
325.00
Range: 0-10 in H2O, 0-2.491 kPa 5 psi (0.75 bar)
477-0-FM**
325.00
Range: 0-20 in H2O, 0-5 kPa 10 psi (0.75 bar)
477-1-FM
325.00
Range: 0-40 in H2O, 0-10 kPa 10 psi (0.75 bar)
477-2-FM
294.00
Range: 0-200 in H2O, 0-50 kPa 30 psi (1.99 bar)
477-3-FM
294.00
Range: 0-10 psi, 0-70 kPa 30 psi (3.99 bar)
477-4-FM
294.00
Range: 0-20 psi, 0-200 kPa 60 psi (3.99 bar)
477-5-FM
294.00
Range: 0-30 psi, 0-700 kPa 60 psi (10.3 bar)
477-6-FM
294.00
Range: 0-100 psi, 0-1000 kPa 150 psi (10.3 bar)
477-7-FM
294.00
Range: 0-150 psi, 0-1000 kPa 200 psi (10.3 bar)
477-8-FM
294.00
Optional:  Soft nylon carrying case (7-1/2" x 3" x 2-1/4") A-402A 36.75
** 2-3 week lead time
Note: 2008 pricing subject to change without notice

 


Dwyer 477-FM Technical Data

Display 0.42" (10.6 mm) 4-digit LCD
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)
Ranges See instrument lising in above table
Pressure Hysteresis ±0.1% of full scale
Response Time 1 second
Measuring medium Air and compatible gases
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)
Battery type 9 volt
Battery life 100 hours
Auto Off Display: 20 minutes / Backlight: 2 minutes
Dimensions L x W x H  
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 only)
Agency Approvals

CE and FM
Note: USB models are not FM approved intrinsically safe
Warranty  

 

 


Dwyer 477-FM Pressure Units Table

 


Accessories - Dwyer 477-FM
Part Number
Description
$US Pricing


A-402A Nylon Carrying Pouch

A-402A

 Nylon carrying pouch 7-1/2" x 3" x 2-1/4".
36.75

Dwyer Model 166T telescoping pitot tube166T

 The Model 166T Telescoping Pitot tube is a unique air flow sensor which can quickly and easily be adjusted for any duct insertion length from 11.5 to 36 inches (29.2 to 91.4 cm). Now, this single compact unit can replace up to five conventional fixed length Pitot tubes. For even greater convenience, it is securely protected by a custom fitted polyethylene carrying case. Telescoping sections lock in place as they are extended, enabling use of the handle grip to gauge proper alignment of the tip within the airstream. Stainless steel construction resists corrosion. Hemispherical tip has 1.0 flow coefficient, is 1/8" dia. (3.2 mm). Largest section is 3/8" (9.5 mm). Weight (with case) 1 lb, 9 oz (709 g). Case: 12.5 x 6.25 x 1.75 in.
210.00
160-8 Pitot tube, 5/16" dia., 8-5/8" insertion length. stainless steel
49.75
160-12 Pitot tube, 5/16" dia., 12-5/8" insertion length. stainless steel
51.00
160-18 Pitot tube, 5/16" dia., 18-5/8" insertion length. stainless steel
55.00
160-24 Pitot tube, 5/16" dia., 24-5/8" insertion length. stainless steel
57.50
160-36 Pitot tube, 5/16" dia., 36-5/8" insertion length. stainless steel
65.00
160-48 Pitot tube, 5/16" dia., 48-5/8" insertion length. stainless steel
66.50
160-60 Pitot tube, 5/16" dia., 60-5/8" insertion length. stainless steel
78.50
A-201 Rubber tubing, 3/16" ID, 9 ft length.
9.50
A-202 Rubber tubing, 3/16" ID, lengths to 50 ft, per ft.
2.70 per ft

Series 160S type "S" pitot tubes designed specifically for flow measurement of dirty, particulate laden air or gas streams typical in smoke stack and other environmental testing are also available. Large 5/16" dia. Stainless steel tubing resists plugging under harsh, sooty conditions which quickly block conventional flow sensors. Total and static pressure tubes are precisely aligned and welded together every six inches for maximum accuracy, strength and long term durability. Versatile 1/8" female NPT connections easily adapt to any type of pipe or tubing. A pair of 1/8" NPT to 3/16" I.D. tubing adapters is included plus a handy molded vinyl cap to protect tip when not in use. Available in 18, 24, 36, 48, 60 and 72" lengths. Pricing ranges from $130.00 to $176.00.
Pricing effective December 2009, subject to change without notice
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