 |
Series
603A |
Differential Pressure Transmitters
4-20 mA signal. Two-three or four wire operation.
Ranges from 0.1" water column. Accurate within ±2% span. |
 |
Dwyer Series 603A Differential Pressure Transmitters
combine ultra low ranges, low cost, high accuracy and
rugged construction - ideal for a wide range of HVAC and
industrial applications. Utilizing a strain gage transducer in
conjunction with the proven mechanical design of the
famous Dwyer Magnehelic® Differential Pressure Gages,
these transmitters provide a standard 4-20 mA analog output
signal in ranges as low as 0.1" w.c. The two/three/four
wire model 603A is powered by 13-35 VDC (2, 3, or 4wire)
or 18-26 VAC (4-wire) loop current. All electronics components
are mounted on a tough, durable fiberglass reinforced
epoxy circuit board. These rugged units can tolerate repeated
over-pressure up to the maximum pressure limit
without damage or the need for recalibration. Accuracy is
±2% of span (as stocked) in normal ambient temperatures.
The transmitter can be surface mounted or flush mounted
in a 4 13/l6" (122 mm) diameter panel hole. Hardware is
included for either option. Duplicate 1/8" NPTF pressure
connections on side and back ease installation. Based on its
unique combination of price and performance, The Series
603A transmitter is ideal for use in commercial and industrial
energy management systems. Typical applications
include control of variable speed fans and blowers as well as
the positioning of system dampers. Continuous data on air
velocities in ducts and air filter pressure drops can be fed to
the controlling computer.
SPECIFICATIONS
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GENERAL |
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Maximum Pressure: |
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35 PSIG (2.46 kg/cm2) |
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Media Compatibility: |
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Air and non-combustible, non-corrosive gases |
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ELECTRICAL |
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|
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Power Supply: |
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13-35 VDC - 2, 3 or 4 wire, 18-26 VAC - 4 wire |
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Connections: |
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4 screw terminal block |
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Output Signal: |
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4-20 mA DC (limited at 38 mA DC) |
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Loop Resistance: |
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DC; 0-1100 ohms, AC- 0-1130 ohms |
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Warm-up Time: |
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10 minutes |
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Current Consumption: |
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DC; 38 mA max., AC; 76 mA max. |
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MECHANICAL |
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|
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Weight: |
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1 lb., 10 oz. (.74 kg) |
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Span and Zero Adjustments: |
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External potentiometers |
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Pressure Connections: |
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1/8" NPT female |
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Materials: |
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Die cast aluminum case, silicone diaphragm, acrylic cover |
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PERFORMANCE AT 70°F (21.1°C) |
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|
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Zero Output: |
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4 mA DC |
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Full Span Output: |
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20 mA DC |
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Accuracy: |
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(Includes linearity, hysteresis and repeatability) ±2% of full span output |
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Stability: |
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±1% F.S./year |
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ENVIRONMENTAL |
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|
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Operating Temperature: |
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20-120°F (-6.7 to 49°C), dry air |
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Thermal Error: |
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±1%/50°F typical |
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STANDARD ACCESSORIES |
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|
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Mounting ring, snap ring, (4) 6-32 x 1 1/4 round head machine screws (3) 6-32 x
5/16" round head machine screws, (2) adapters, 3/16" I.D. tubing 1/8" NPT pipe
plugs and adjustment key for span and zero. |
Optional 3 1/2 digit LCD readout is available for Series 603A, 630A and 632A transmitters.
1/2" liquid crystal display reads 0-100(%) of full span pressure. Plus or minus indication
included. To order, add suffix LCD to model number. Example: 603A-4-LCD. For direct readings
in PSI, in w.c., metric units, etc., specify with order. Example: 603A-4-LCD reading directly
in pressure units, 0-5.0 in w.c.
SERIES 603A TRANSMITTER MODELS & RANGES (2-3-4 WIRE)
Model
Number |
Range in Inches of Water |
| As Stocked |
Min. Range |
Max. Range |
603A-1
603A-2
603A-3
603A-4
603A-5
603A-6
603A-11
603A-12
603A-13
603A-14
|
0-0.25
0-0.50
0-2.0
0-5.0
0-25
0-100
.25-0-.25
1-0-1
5-0-5
10-0-10
|
0-.10
0-.35
0-1.5
0-4.0
0-20
0-50
|
0-.40
0-2.0
0-6.0
0-25
0-100
0-250
|
| Ranges in PSI |
603A-7
603A-8
|
0-20
3-15
|
0-5
|
0-25
|
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