Viatran - Model 274 -Differential Pressure Transmitter

• High Accuracy
• Many Options available

The Model 274 measures pressure ranges from 5" W.C. to 100 PSID and provides a 0-5 VDC signal. All wetted surfaces, including flanges and diaphragms, are constructed of 316 stainless steel with a sealing Viton® O-Ring for excellent corrosion resistance. A standard 1,000 PSI static line pressure and single side overpressure rating are featured with these transmitters. For applications that require a higher static line pressure rating, 3,000 PSI is available with optional flanges. Models 274 also features an internal calibration circuit for easy field set-up, a quick disconnect electrical connection and external zero and span controls. A special option called fast response enables the unit to accurately respond to changes in pressure in approximately one tenth of the standard time.These features make the Model 274 ideal for most industrial test and flow applications.

Performance
Full Scale Pressure Ranges 0-5, 10, 20, 50, 100, 300, 750" W.C.D. 0-15, 50, 100 PSID
Nonlinearity (Best Fit Straight Line) ≤±0.15% FSO
Hysteresis ≤±0.08% FSO
Repeatability ≤ ±0.06% FSO
Full Scale Output (FSO) 5 Vdc at 70° F
Resolution Infinite
Long Term Stability ≤±0.1% FSO per 6 months
Zero Shift w/Line Pressure (%FSO/1000 PSI) 5” WC to 100” WC : ≤ 4% 300” WC to 100 PSI: ≤ 6%
Span Shift w/Line Pressure (%FSO/1000 PSI) 5” WC to 100” WC : 0 to -6% 300” WC to 100 PSI : 0 to -4%
Zero Shift After 1000 PSI Overload Single Side: ≤± 0.1% FSO, Alternate Sides: ≤±0.5% FSO
Compensated Temperature Range 70°F to 170°F (21°C to 76°C)
Operating Temperature Range 0° F to +200° F
Storage Temperature Limits -40°F to +250°F (-40°C to 121°C)
Temperature Effect on Zero ≤± 2.0% FSO per 100° F
Temperature Effect on Span ≤± 2.0% FSO per 100° F

Materials of Construction
Wetted Parts 316 Stainless steel and Viton O-Ring
Housing 304 and 316 Stainless Steel with a Cadmium plated electrical connector
Weight 3.5 lbs. (6.5 lbs. with optional flanges)
Identification Laser etched onto body

Mechanical
Pressure Connection 1/4" - 18 NPT female
Static Pressure 1000 PSI maximum (3000 PSI - optional)
Proof Pressure 1000 PSI single sided (3000 PSI - optional)
Burst Pressure 1500 PSI (4500 PSI - Optional)
Diaphragm Displacement 0.002 cubic inches at FSPR
Pressure Cavity Volume Standard Flanges: 0.4 cubic inches Optional Process Flanges : 1.5 cubic inches
Fill Fluid Dow DC200 Silicone oil
Mounting May be supported by process piping or by optional mounting bracket