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.


Full Scale Pressure Ranges 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)


Sensor Technology
Bonded foil strain gage
Supply Voltage
9 to 40 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 5:1 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 1/2” NPT male conduit, 3 wires, 18 AWG, 36”
Wire Color Code

Red +Power/Signal

Black -Power/Signal

Green Case Ground


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


Pressure Connection
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


Mini change connector
Improved temperature compensation
Special range
EA Special calibration
JJ Direct mount indicator with Explosion Proof housing attached to transmitter
MD FM label
NH Customer specified identification
PW 1/8 DIN digital indicator
ZP CIA-C814-10-6P-10-0A1