Product Thumbnail

Model 349 Pressure Transmitter

Durable, dependable, accurate

Product Thumbnail

Viatran’s “49” series is a robust, highly accurate pressure transmitter designed for the severe environments found in aerospace, engine test and fluid power control applications.


Request a Quote

Features

High Accuracy
Many Options available
All Stainless Steel construction



The Model 349's small size allows flexibility in tight spaces, while the welded body, stainless steel connector and sealed adjustments ensure protection against contamination.

The “49” series utilizes three sensor technologies to achieve top performance through all pressure ranges. For ranges 0-5 to 0-150 PSI, a silicon piezoresistive sensor provides extremely accurate readings and high overpressure protection. Bonded foil strain gage sensors are more reliable for pressure ranges 200 to 15,000 PSI where transient spikes could destroy a silicon sensor.

For pressure measurement over 20,000 PSI, Viatran developed the “tube” sensor. Made from high strength stainless steel, this sensor ensures high accuracy and durability where diaphragm type sensors can rupture.Model 349 is equipped with electronic linearization, a compensation  circuit that corrects for non-linearities in the sensor.

Surface-mount technology (SMT) allows this complex circuitry to be incorporated into a small package and yield a linearity specification of ≤0.1% FSO (optional to 0.05%). Encapsulation of the surface-mount components of the PC board helps to prevent damage from severe vibration with top-mounted and sealed zero and span adjustments. An internal calibration circuit permits easy 2-point calibration without an external pressure source.

Optional performance features of the “49” series include improved accuracy, temperature compensation, special ranging, modified output, and alternate pressure ports.

Performance
Full Scale Pressure Range
0-5, 15, 25, 50, 100, 200, 300, 500, 1K, 1500, 2K, 3K, 5K, 7.5K,10K, 15K, 20K, 25K, 30K, 40K, 50K, 60K 75K, 100K PSIA, PSIS, PSIG
Linearity (Best Fit Straight Line)
≤±0.10% FSO
For 100K PSI ≤±0.25% FSO
Hysteresis
≤0.06% FSO
Repeatability
≤0.03% FSO
Full Scale Output (FSO)
16 mA
Long Term Stability
≤±0.25% FSO per 6 months
Response Time
≤4 mSec to reach 90% of FSO
Temperature Effect on Zero
≤±1% FSO per 100°F (37°C)
Temperature Effect on Span
≤±1% FSO per 100°F (37°C)
Compensated Temperature Range
70°F to 170°F (21°C to 76°C)
Operating Temperature Range
-40°F to 185°F (-40°C to 85°C)
Storage Temperature Limit
-65°F to 250°F (-54°C to 121°C)
Electrical
Supply Voltage
9 to 40 Vdc
Power Supply Regulation Effect
≤±0.01% FSO per Volt
Output Signal
4 to 20 mA
Load Impedance
1500 Ohms max at 40 Vdc max
Bridge Impedance
5,000 Ohms nominal
Circuit Protection
Output may be short-circuited indefinitely. Input polarity may be reversed. Over voltage protection to 1000 volts for <1 mSec duration
Electrical Connection
6-pin hermetic, bayonet-style, 303 SST weld mount connector
Pin Outs
PIN A +Signal
PIN B -Signal
PIN C Calibrate
PIN D Calibrate
PIN E No Connection
PIN F No Connection
Mechanical
Pressure Connection
0-5 thru 0-15K PSI 1/4" - 18 NPT Female (0-3.3 thru 0-1034 bar)
0-20K thru 0-50K PSI 1/4" F250-C High Pressure Tube (0-1378 thru 0-3447 bar)
0-60K thru 0-100K PSI 5/16" F312C High Pressure Tube (0-4136) thru 0-6894 bar)
Proof Pressure
5 thru 150 PSI 3X range minimum
151 thru 15K PSI 1.5X range
20K - 100K PSI 1.2X range
Burst Pressure
5 thru 150 PSI Consult Factory
151 thru 15K PSI 5X range or 30K PSI, whichever is less
20K - 100K PSI
1.5X range or 125K PSI, whichever is less
Pressure Cavity Volume
5 thru 150 PSI 0.25 cu. in.
151 thru 15K PSI 0.32 cu. in.
20K - 100K PSI 0.10 cu. in.
Mounting
Supported by process piping or optional mounting bracket
Materials of Construction
Wetted Parts
5 thru 150 PSI 316, 304 SST
200 thru 15K PSI 15-5 PH SST
20K - 100K PSI Stainless Steel
Housing
316L SST
Weight
15 oz, nominal
Identification
Laser etched onto body
Options
Alternate Connector
BZ Micro change connector
Alternate Ports
YA MS33649-04
YG MS16142-04
YI 1/8" NPT(F)
YK 1/4" NPT(M)
YM 1/4" F250-C High pressure tube
YN 3/8" NPT(F)
YS 5/16" F-375-C High pressure tube
YR 1/2" NPT(F)
YV MS33649-08
Performance Options
DG Improve temperature performance
DH Special ranging
DK Special calibration setting
DM Modified output (i.e., 0-10 Vdc)
DN Improved accuracy
DQ Cleaning for oxygen service
EA Special calibration run
NH Customer specified identification
PW 1/8 DIN digital indicator
Note:
Application of some available options may affect standard performance. Consult your Viatran representative for details.

Model 349 Pressure Transmitter

Product Thumbnail

Model 349 Pressure Transmitter

Durable, dependable, accurate

Viatran’s “49” series is a robust, highly accurate pressure transmitter designed for the severe environments found in aerospace, engine test and fluid power control applications.


Request a Quote

Performance
Full Scale Pressure Range
0-5, 15, 25, 50, 100, 200, 300, 500, 1K, 1500, 2K, 3K, 5K, 7.5K,10K, 15K, 20K, 25K, 30K, 40K, 50K, 60K 75K, 100K PSIA, PSIS, PSIG
Linearity (Best Fit Straight Line)
≤±0.10% FSO
For 100K PSI ≤±0.25% FSO
Hysteresis
≤0.06% FSO
Repeatability
≤0.03% FSO
Full Scale Output (FSO)
16 mA
Long Term Stability
≤±0.25% FSO per 6 months
Response Time
≤4 mSec to reach 90% of FSO
Temperature Effect on Zero
≤±1% FSO per 100°F (37°C)
Temperature Effect on Span
≤±1% FSO per 100°F (37°C)
Compensated Temperature Range
70°F to 170°F (21°C to 76°C)
Operating Temperature Range
-40°F to 185°F (-40°C to 85°C)
Storage Temperature Limit
-65°F to 250°F (-54°C to 121°C)

Electrical
Supply Voltage
9 to 40 Vdc
Power Supply Regulation Effect
≤±0.01% FSO per Volt
Output Signal
4 to 20 mA
Load Impedance
1500 Ohms max at 40 Vdc max
Bridge Impedance
5,000 Ohms nominal
Circuit Protection
Output may be short-circuited indefinitely. Input polarity may be reversed. Over voltage protection to 1000 volts for <1 mSec duration
Electrical Connection
6-pin hermetic, bayonet-style, 303 SST weld mount connector
Pin Outs
PIN A +Signal
PIN B -Signal
PIN C Calibrate
PIN D Calibrate
PIN E No Connection
PIN F No Connection

Model 349 Pressure Transmitter

High Accuracy
Many Options available
All Stainless Steel construction

The Model 349's small size allows flexibility in tight spaces, while the welded body, stainless steel connector and sealed adjustments ensure protection against contamination.

The “49” series utilizes three sensor technologies to achieve top performance through all pressure ranges. For ranges 0-5 to 0-150 PSI, a silicon piezoresistive sensor provides extremely accurate readings and high overpressure protection. Bonded foil strain gage sensors are more reliable for pressure ranges 200 to 15,000 PSI where transient spikes could destroy a silicon sensor.

For pressure measurement over 20,000 PSI, Viatran developed the “tube” sensor. Made from high strength stainless steel, this sensor ensures high accuracy and durability where diaphragm type sensors can rupture.Model 349 is equipped with electronic linearization, a compensation  circuit that corrects for non-linearities in the sensor.

Surface-mount technology (SMT) allows this complex circuitry to be incorporated into a small package and yield a linearity specification of ≤0.1% FSO (optional to 0.05%). Encapsulation of the surface-mount components of the PC board helps to prevent damage from severe vibration with top-mounted and sealed zero and span adjustments. An internal calibration circuit permits easy 2-point calibration without an external pressure source.

Optional performance features of the “49” series include improved accuracy, temperature compensation, special ranging, modified output, and alternate pressure ports.

Mechanical
Pressure Connection
0-5 thru 0-15K PSI 1/4" - 18 NPT Female (0-3.3 thru 0-1034 bar)
0-20K thru 0-50K PSI 1/4" F250-C High Pressure Tube (0-1378 thru 0-3447 bar)
0-60K thru 0-100K PSI 5/16" F312C High Pressure Tube (0-4136) thru 0-6894 bar)
Proof Pressure
5 thru 150 PSI 3X range minimum
151 thru 15K PSI 1.5X range
20K - 100K PSI 1.2X range
Burst Pressure
5 thru 150 PSI Consult Factory
151 thru 15K PSI 5X range or 30K PSI, whichever is less
20K - 100K PSI
1.5X range or 125K PSI, whichever is less
Pressure Cavity Volume
5 thru 150 PSI 0.25 cu. in.
151 thru 15K PSI 0.32 cu. in.
20K - 100K PSI 0.10 cu. in.
Mounting
Supported by process piping or optional mounting bracket

Materials of Construction
Wetted Parts
5 thru 150 PSI 316, 304 SST
200 thru 15K PSI 15-5 PH SST
20K - 100K PSI Stainless Steel
Housing
316L SST
Weight
15 oz, nominal
Identification
Laser etched onto body

Options
Alternate Connector
BZ Micro change connector
Alternate Ports
YA MS33649-04
YG MS16142-04
YI 1/8" NPT(F)
YK 1/4" NPT(M)
YM 1/4" F250-C High pressure tube
YN 3/8" NPT(F)
YS 5/16" F-375-C High pressure tube
YR 1/2" NPT(F)
YV MS33649-08
Performance Options
DG Improve temperature performance
DH Special ranging
DK Special calibration setting
DM Modified output (i.e., 0-10 Vdc)
DN Improved accuracy
DQ Cleaning for oxygen service
EA Special calibration run
NH Customer specified identification
PW 1/8 DIN digital indicator
Note:
Application of some available options may affect standard performance. Consult your Viatran representative for details.

Model 349 Pressure Transmitter

Model 349 Pressure Transmitter

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