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Model 277 Standard Range Pressure Transmitter

Legacy Product

Product Thumbnail

Viatran’s “77” Series differential pressure transmitters are no longer available. Please refer to Viatran's Model 274 product page or consult our Application Engineers to determine the best replacement.



Request a Quote for Replacement Model 274

Features

High Accuracy
Many Options available
High Pressure Applications


The Model 277 Standard Range transmitter measures pressure ranges from 0-10" 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 1000 PSI static line pressure and single side overpressure rating are featured with these transmitters. 3000 PSI is available with optional process flanges.
Models 277 also features an internal calibration circuit for easy field set-up, a quick disconnect electrical connection and external zero and span controls. These features make the Model 277 ideal for most industrial test and flow applications.

Viatran’s “77” Series differential pressure transmitters are no longer available.
Please refer to Viatran's Model 274 product page or consult our Application Engineers to determine the best replacement.

 

All information on this page was current when this product was discontinued.

Performance
Full Scale Pressure Ranges (FSPR)
0-10, 20,100, 300" WC
0-15, 50, 100 PSI
Combined Accuracy (Non-Linearity (BFSL),Hysteresis & Repeatability)
≤±0.20% RSS
Full Scale Output (FSO)
5 Vdc
Resolution
Infinite
Zero Shift w/Line Pressure (%FSO/1000 PSI)
≤± 2%
Zero Shift After 1000 PSI Overload
0-10 thru 0-50" WC Single Side: ≤± 0.5% FSO
Alternate Sides: ≤±0.5% FSO
≥ 100” WC : Single Side: ≤± 0.2% FSO
Alternate Sides: ≤±0.5% FSO
Compensated Temperature Range
70°F to 170°F (21°C to 77°C)
Operating Temperature Range
0° F to +185° F (-20°C to 85°C)
Storage Temperature Range
-40°F to +185°F (-40°C to 85°C)
Thermal Effect on Zero
≤ 2.0% FSO per 100° F
Thermal Effect on Span
≤ 2.0% FSO per 100° F
Electrical
Supply Voltage
9 to 30 Vdc
Power Supply Regulation
± .02% FSO per Volt (Typical)
Output Signal
0 to 5 Vdc
Output Loading
3000 Ohms minimum
Current Draw
3.8 mAdc
Zero Adjustment
± 5 % FSO min. / ±50% FSO max.
Span Adjustment
± 10% FSO min. / ±50% FSO max.
Range Calibration Signal
80% FSO, by shorting pins E & F
Calibration Signal Accuracy
≤± 1.0%
Circuit Protection
Reverse polarity protected
Insulation Resistance
< 5 nS to case ground
Electrical Connection
Mates with 6 pin, Hermetic, Box Mount, Shell Size 10, MIL-C-26482 bendix type connector
Pin Outs
Pin A + Power
Pin B - Power
Pin C + Signal
Pin D - Signal
Pin E Shunt Cal
Pin F Shunt Cal
Mechanical
Pressure Connection
1/4" NPT Female
Line Pressure
0-10" WC 1000 PSI maximum
0-20"WC thru 1,000 PSI 1000 PSI (Optional 3000 PSI w/ process flanges)
Proof Pressure
1000 PSI single sided
Burst Pressure
1500 PSI
0-10" WC 1,150 PSI
0-20" thru 0-300" WC 1,450 PSI
0-15 thru 0-100 PSI 1,850 PSI
Volume Displacement
≈0.1 mL at FSPR
Pressure Cavity Volume
Standard Flanges: 0.4 cubic inches, each side
Optional Process Flanges "NB" : 1.5 cubic inches
Mounting
May be supported by process piping or by optional mounting bracket
Response Time
See Chart on Data Sheet Faster response available with NF option.
Materials of Construction
Wetted Parts
316 Stainless steel and Viton® O-Ring
Housing
304 and 316 Stainless Steel
Identification
Laser marked on body of unit
Weight
3.5 lbs. (6.5 lbs. with optional flanges)
Options
ELECTRICAL CONNECTION
B ( )
Alternate electrical connector
PERFORMANCE OPTIONS
DG
Improved temperature compensation
DH
Special Range
DK
Special calibration setting
DW
No external adjustments
DX
Modified full scale output (FSO) (≤5V)
EA
Special Calibration Run
GE
Buna 'N' O-Rings
NB
Alternate process flanges for increased line pressure rating (3,000 PSI)
NF
Fast response time
NH
Customer specified identification
PW
Calibration of Meter w/Viatran unit
ALTERNATE PRESSURE PORTS
Y ( )
Alternate pressure ports
Z ( )
Alternate electrical connector
Note:
Application of some available options may affect standard performance. Consult your Viatran representative for details.
Dimensional Data

Model 277 Standard Range Pressure Transmitter

Product Thumbnail

Model 277 Standard Range Pressure Transmitter

Legacy Product

Viatran’s “77” Series differential pressure transmitters are no longer available. Please refer to Viatran's Model 274 product page or consult our Application Engineers to determine the best replacement.



Request a Quote for Replacement Model 274

Performance
Full Scale Pressure Ranges (FSPR)
0-10, 20,100, 300" WC
0-15, 50, 100 PSI
Combined Accuracy (Non-Linearity (BFSL),Hysteresis & Repeatability)
≤±0.20% RSS
Full Scale Output (FSO)
5 Vdc
Resolution
Infinite
Zero Shift w/Line Pressure (%FSO/1000 PSI)
≤± 2%
Zero Shift After 1000 PSI Overload
0-10 thru 0-50" WC Single Side: ≤± 0.5% FSO
Alternate Sides: ≤±0.5% FSO
≥ 100” WC : Single Side: ≤± 0.2% FSO
Alternate Sides: ≤±0.5% FSO
Compensated Temperature Range
70°F to 170°F (21°C to 77°C)
Operating Temperature Range
0° F to +185° F (-20°C to 85°C)
Storage Temperature Range
-40°F to +185°F (-40°C to 85°C)
Thermal Effect on Zero
≤ 2.0% FSO per 100° F
Thermal Effect on Span
≤ 2.0% FSO per 100° F

Electrical
Supply Voltage
9 to 30 Vdc
Power Supply Regulation
± .02% FSO per Volt (Typical)
Output Signal
0 to 5 Vdc
Output Loading
3000 Ohms minimum
Current Draw
3.8 mAdc
Zero Adjustment
± 5 % FSO min. / ±50% FSO max.
Span Adjustment
± 10% FSO min. / ±50% FSO max.
Range Calibration Signal
80% FSO, by shorting pins E & F
Calibration Signal Accuracy
≤± 1.0%
Circuit Protection
Reverse polarity protected
Insulation Resistance
< 5 nS to case ground
Electrical Connection
Mates with 6 pin, Hermetic, Box Mount, Shell Size 10, MIL-C-26482 bendix type connector
Pin Outs
Pin A + Power
Pin B - Power
Pin C + Signal
Pin D - Signal
Pin E Shunt Cal
Pin F Shunt Cal

Model 277 Standard Range Pressure Transmitter

High Accuracy
Many Options available
High Pressure Applications

The Model 277 Standard Range transmitter measures pressure ranges from 0-10" 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 1000 PSI static line pressure and single side overpressure rating are featured with these transmitters. 3000 PSI is available with optional process flanges.
Models 277 also features an internal calibration circuit for easy field set-up, a quick disconnect electrical connection and external zero and span controls. These features make the Model 277 ideal for most industrial test and flow applications.

Viatran’s “77” Series differential pressure transmitters are no longer available.
Please refer to Viatran's Model 274 product page or consult our Application Engineers to determine the best replacement.

 

All information on this page was current when this product was discontinued.

Mechanical
Pressure Connection
1/4" NPT Female
Line Pressure
0-10" WC 1000 PSI maximum
0-20"WC thru 1,000 PSI 1000 PSI (Optional 3000 PSI w/ process flanges)
Proof Pressure
1000 PSI single sided
Burst Pressure
1500 PSI
0-10" WC 1,150 PSI
0-20" thru 0-300" WC 1,450 PSI
0-15 thru 0-100 PSI 1,850 PSI
Volume Displacement
≈0.1 mL at FSPR
Pressure Cavity Volume
Standard Flanges: 0.4 cubic inches, each side
Optional Process Flanges "NB" : 1.5 cubic inches
Mounting
May be supported by process piping or by optional mounting bracket
Response Time
See Chart on Data Sheet Faster response available with NF option.

Materials of Construction
Wetted Parts
316 Stainless steel and Viton® O-Ring
Housing
304 and 316 Stainless Steel
Identification
Laser marked on body of unit
Weight
3.5 lbs. (6.5 lbs. with optional flanges)

Options
ELECTRICAL CONNECTION
B ( )
Alternate electrical connector
PERFORMANCE OPTIONS
DG
Improved temperature compensation
DH
Special Range
DK
Special calibration setting
DW
No external adjustments
DX
Modified full scale output (FSO) (≤5V)
EA
Special Calibration Run
GE
Buna 'N' O-Rings
NB
Alternate process flanges for increased line pressure rating (3,000 PSI)
NF
Fast response time
NH
Customer specified identification
PW
Calibration of Meter w/Viatran unit
ALTERNATE PRESSURE PORTS
Y ( )
Alternate pressure ports
Z ( )
Alternate electrical connector
Note:
Application of some available options may affect standard performance. Consult your Viatran representative for details.

Model 277 Standard Range Pressure Transmitter

Model 277 Standard Range Pressure Transmitter

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