Sanitary pressure transmitters

Model 351 Pressure Transmitter

Model 351 Pressure Transmitter

A flush diaphragm inhibits bacterial growth and facilitates Clean in Place (CIP) systems. The quick-disconnect Tri-clamp connections make these transmitters ideal for pharmaceutical, dairy and food processing applications where frequent cleaning is required.

Poptávkový systém

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Flush Machined Sensing Diaphragm, External Adjustment, Tri-Clamp Fitting

Viatran technology allows for accurate pressure measurement up to 1000 PSI. The transmitter also has no moving parts, isolation diaphragm, or oil fill to contaminate your process fluid.A flush diaphragm inhibits bacterial growth and facilitates Clean in Place (CIP) systems. The quick-disconnect Tri-clamp connections make these transmitters ideal for pharmaceutical, dairy and food processing applications where frequent cleaning is required.

Performance characteristics

Full Scale Pressure Range 0 - 100, 400, 1000 PSIS, PSIA
Combined Accuracy (Non-Linearity, Hysteresis, Repeatability) ≤0.35% FSO
Full Scale Output (FSO) 16 mA at 70°F (21°C)
Resolution Infinite
Long Term Stability ≤±0.25% FSO per 6 months
Pressure Connection Effect Zero Balance ≤±0.1%
Response Time (mechanical & electrical combined) ≤50 mSec
Temperature Effect on Zero ≤±2% FSO per 100°F (37°C)
Temperature Effect on Span ≤±1% FSO per 100°F (37°C)
Temperature Effect on Calibrated Signal ≤±1& FSO per 100°F (37°C)
Operating Temperature Range 0°F to 180°F (-17°C to 82°C)
Process Temperature Range -65°F to 250°F (-53°C to 121°C)
Storage Temperature Limits -65°F to 250°F (-53°C to 121°C)

Electrical characteristics

Sensor Technology
Bonded foil strain gage
Supply Voltage 12 to 30 Vdc
Power Supply Regulation ≤±0.04% FSO per Volt
Output Signal 4 - 20 mA at 70°F (21°C)
Load Impedance 1925 Ohms max at 40 Vdc
Ripple ≤±0.08% FSO
Zero Balance 4 mA ±5% FSO at 70°F (21°C)
Zero adjustment 4:1 turndown, externally 30 PSI min range
Range Calibration Signal 20% of ±1.0% of FSPR, externally switched. Exact signal to pressure correlation is provided with each unit
Circuit Protection Varistor protected across the input leads for surges above 38 V and currents to 250 Amps peak with a pulse width of 8-20 µSecs. Reverse polarity protected
Bridge Resistance 5000 Ohms nominal
Insulation Resistance ≤100 MegOhms at 50 Vdc
RFI/EMI Suppression ≤1% FSO output change at 30 V meter, 10-1000 mhz
Electrical Connection 1/2” NPT male conduit, 3 wires, 18 AWG, 36”

Color Wiring

Red +Power/Signal
Black -Power/Signal
Green Case Ground

Materials of Construction

Enclosure Materials 15-5, 304, and 316 stainless steel
Wetted Materials 316 stainless steel
Identification .Laser etched onto bod
Measured Fluids Any gas or liquid compatible with 316 stainless steel

Mechanical characteristics

Pressure Connectio 1 1/2”, 2”, 2 1/2” Tri-clamp
Proof Pressure 1.5 times rated range
Burst Pressure ≤3 times rated range or max orange of clamp and tubing, whichever is less
Weight 30 oz


Mini change connector
Improved temperature compensation
Special range (350 only)
Special calibration
FM Intrinsic Safety
Customer specified identification
1/8 DIN digital indicator





Model 350 Pressure Transmitter

3A approved, Flush Machined Diaphragm Sensor, Tri-Clamp Fitting

Viatran technology allows for accurate pressure measurement up to 1000 PSI. The transmitter also has no moving parts,
isolation diaphragm, or oil fill to contaminate your process fluid.

Certificates & Approvals

Overview of Available Certificates and Approvals: Visit this link, which will take you to a page with a comprehensive list of current certificates and approvals for our products. Here, you can verify that our offerings meet the highest standards of quality and safety. More information


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