Model 551 Pressure Transmitter
Flush Mount Sensor, 0-50 thru 1000 psi, Solid Machined Diaphragm, Sealed External Adjustments
551 is designed to provide rugged performance while measuring harsh corrosive materials. The sensor is a stainless steel machined diaphragm, with no oil fill. The zero cavity flush sensor provides an easy clean surface with no clogging. Magnetically coupled external adjustments prevent fluid ingress while providing a rangeable, field adjustable solution.
Request a Quote for Recommended Replacement
Features
All Stainless Steel construction
Performance
Full Scale Pressure Range (FSPR)
0-50, 100, 150, 200, 250, 300, 500, 750, 1000, PSIG, PSIS, PSiA
Combined Linearity, Hysteresis and Repeatability
≤±0.45%
Full Scale Output (FSO)
16 mA at ±0.5% FSO
Resolution
Infinite
Long Term Stability
≤±0.5% FSO
Pressure Connection Effect Zero Balance
≤±0.5% FSO
Mechanical & Eletrical Combined
≤0.1mSec
Temperature Effect on Zero
≤± 2% FSO per 100°F (37°C)
Temperature Effect on Span
≤± 2% FSO per 100°F (37°C)
Compensated Temperature Range
0°F to 185°F (-17°C to 85°C)
Operating Temperature Range
-40°F to 250°F (-40°C to 121°C) -Process
-40°F to 185°F (-40°C to 85°C) -Ambient
Storage Temperature
-40°F to 250°F (-40°C to 121°C)
Electrical
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
1400 Ohms max at 40 Vdc
Ripple
≤1% FSO
Zero Balance
4 mA ±0.5% FSO
Zero Adjustment
-50% FSPR (elevation) to 100% FSPR (suppression). Coarse and fine adjustments standard
Span Adjustment
5:1 turndown, externally
Range Calibration Signal
20% ±1% of FSPR, externally switched. The 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 µSec. Reverse polarity protected
Bridge Resistance
5000 Ohms nominal
Insulation Resistance
≥ 2000 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”L
Wire Color Codes
Red
+ Power/Signal
Black
- Power/Signal
Green
Case Ground
Mechanical
Pressure Connection
M44 X 1.25 fitting
Proof Pressure
1.5 times rated range
Burst Pressure
≥ 3 times rated range or max range of clamp and tubing, whichever is less
Weight
22 oz
Materials of Construction
Enclosure Materials
304 and 316 stainless steel
Wetted Materials
17-4PH NACE (Inconel X750 optional)
Identification
Laser etched onto bod
Measured Fluids
Any gas or liquid compatible with 17-4PH NACE
Enclosure Classification
.NEMA 4X, 5, 6, 12
Options
Alternate Connectors
BZ
Micro change connector
ZP
6-pin hermetic (Bendix style)
Performance Options
DG
Improved temperature compensation
DH
Special range (550 only)
EA
Special calibration
JJ
Direct mount indicator with Explosion Proof housing
JS
Direct mount indicator
NH
Customer specified identification
PW
1/8 DIN digital indicator
QB
Inconel wetted parts
TW
Russia Intrinsic Safety
Accessories
Conduit Connection Box
Tank Fittings
Gylon Sealing Gasket
Note:
Application of some available options may affect standard performance. Consult your Viatran Representative for details.
Model 551 Pressure Transmitter
Model 551 Pressure Transmitter
Flush Mount Sensor, 0-50 thru 1000 psi, Solid Machined Diaphragm, Sealed External Adjustments
551 is designed to provide rugged performance while measuring harsh corrosive materials. The sensor is a stainless steel machined diaphragm, with no oil fill. The zero cavity flush sensor provides an easy clean surface with no clogging. Magnetically coupled external adjustments prevent fluid ingress while providing a rangeable, field adjustable solution.
Request a Quote for Recommended Replacement
Performance
Full Scale Pressure Range (FSPR)
0-50, 100, 150, 200, 250, 300, 500, 750, 1000, PSIG, PSIS, PSiA
Combined Linearity, Hysteresis and Repeatability
≤±0.45%
Full Scale Output (FSO)
16 mA at ±0.5% FSO
Resolution
Infinite
Long Term Stability
≤±0.5% FSO
Pressure Connection Effect Zero Balance
≤±0.5% FSO
Mechanical & Eletrical Combined
≤0.1mSec
Temperature Effect on Zero
≤± 2% FSO per 100°F (37°C)
Temperature Effect on Span
≤± 2% FSO per 100°F (37°C)
Compensated Temperature Range
0°F to 185°F (-17°C to 85°C)
Operating Temperature Range
-40°F to 250°F (-40°C to 121°C) -Process
-40°F to 185°F (-40°C to 85°C) -Ambient
Storage Temperature
-40°F to 250°F (-40°C to 121°C)
Electrical
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
1400 Ohms max at 40 Vdc
Ripple
≤1% FSO
Zero Balance
4 mA ±0.5% FSO
Zero Adjustment
-50% FSPR (elevation) to 100% FSPR (suppression). Coarse and fine adjustments standard
Span Adjustment
5:1 turndown, externally
Range Calibration Signal
20% ±1% of FSPR, externally switched. The 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 µSec. Reverse polarity protected
Bridge Resistance
5000 Ohms nominal
Insulation Resistance
≥ 2000 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”L
Wire Color Codes
Red
+ Power/Signal
Black
- Power/Signal
Green
Case Ground
Model 551 Pressure Transmitter
All Stainless Steel construction
Mechanical
Pressure Connection
M44 X 1.25 fitting
Proof Pressure
1.5 times rated range
Burst Pressure
≥ 3 times rated range or max range of clamp and tubing, whichever is less
Weight
22 oz
Materials of Construction
Enclosure Materials
304 and 316 stainless steel
Wetted Materials
17-4PH NACE (Inconel X750 optional)
Identification
Laser etched onto bod
Measured Fluids
Any gas or liquid compatible with 17-4PH NACE
Enclosure Classification
.NEMA 4X, 5, 6, 12
Options
Alternate Connectors
BZ
Micro change connector
ZP
6-pin hermetic (Bendix style)
Performance Options
DG
Improved temperature compensation
DH
Special range (550 only)
EA
Special calibration
JJ
Direct mount indicator with Explosion Proof housing
JS
Direct mount indicator
NH
Customer specified identification
PW
1/8 DIN digital indicator
QB
Inconel wetted parts
TW
Russia Intrinsic Safety
Accessories
Conduit Connection Box
Tank Fittings
Gylon Sealing Gasket
Note:
Application of some available options may affect standard performance. Consult your Viatran Representative for details.