Model 555 Pressure Transmitter

Model 555 Pressure Transmitter

Designed for harsh abrasive slurry, the 555 has a unique feature which allows for wet installation in less than an hour through the use of a pipe saddle with integral shutoff. External adjustments and corrosive resistant wetted materials make this an excellent choice for pulp and paper, waste water processing, slurry and sludge measurements.

Inquiry system 

Configure your own product according to your requirements and needs. If you are unsure of the configuration, provide us in the notes the necessary information about the existing sensor or product, even a competitor. We will be happy to help you find an alternative Viatran product. If your request is urgent, let us know. We will do our best to help you resolve this situation to your satisfaction as quickly as possible. If we have all the information, we are able to offer a model with minor differences, which is in stock and you can have another product available the next day.

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Viatran Configuration Code:

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  Full Scale Pressure Ranges 0-50, 100, 150, 200, 250, 300, 500, PSIS
Combined Accuracy 
(Non-Linearity, Hysteresis and repeatability) 
50 - 100 PSI ≤±.5% FSO
150 - 500 PSI ≤±.3% FSO
Full Scale Output (FSO) 16 mA at 70°F (21°C)
  Long Term Stability ≤±0.5% FSO per 6 months
Pressure Connection Effect Zero Balance ≤±1% FSO
Response Time
(Mechanical & Eletrical Combined)
<20 mSec to reach 90% of Full Scale
Temperature Effect on Zero ±1% FSO per 100°F (37°C)
Temperature Effect on Span ±1% FSO per 100°F (37°C)
Combined at 4:1 Range Down 70°F to 170°F (21°C to 77°C)
Compensated Teperature Range 185°F (85°C) - Ambient
  Maximum Operating Temperature  250°F (121°C) - Fluid
  Minimum Operating Temperature -40°F (-40°C)
  Storage Temperature Limits -65°F to 250°F (-53°C to 121°C)


Supply Voltage:
12 to 30 Vdc
Power Consumption 
≤±0.02% FSO per volt
Output Signal
4-20 mA at 70°F (21°C)
Load Impedance 900 Ohms maximum at 30 Vdc
Elevation -100% of FSO
Suppression +50% of FSO
Span Adjustment Rangeable down 4:1 from standard range
Range Calibration Signal 20% of FSPR externally switched
Calibration Signal Accuracy ±1.0% FSO. The exact signal to pressure correlation is provided with each unit
Circuit Protection Varistor protected across the input leads for surges above 40V and currents to 250 Amps Peak with a pulse width of 20 µSec. Reverse polarity protected
Bridge Resistance 5K Ohms nominal
Insulation Resistance ≥200 MegOhms to case ground (≤5 nS)
RFI/EMI Negligible to 500 MHz at 5 Watts direct contact
  Electrical Connection  1/2” NPT (M), 18 AWG, 72”
  Wire Color Codes

Red +Power/Signal

Black -Power/Signal

Green Case Ground


Enclosure Materials
Inconel X750 and 316L stainless steel
Wetted Materials
Inconel X750 and 316L stainless steel
Enclosure Classification
NEMA/Type 4X (1P68)


Pressure Connection:
100 - 1000 PSI Flush Diaphragm
Proof Pressure:
1.5 times URL
Burst Pressure:
≥ 3 times rated URL
Shock Limitation 100 g's
Weight 70 oz (2kg)


Intrinsic Safety: Class I, II, III, Division 1, Groups A-G, and AEx ia IIC, T4 at Ta=80ºC, T5 at Ta=40ºC, Indoor and Outdoor NEMA/Type 4X Hazardous Locations
Nonincendive: Class I,II,III Div. 2, Groups A-G and Class I, Zone 2, Group IIC, T4 at Ta=80ºC, T5 at Ta=40ºC
CSA (Pending)
Intrinsic Safety: Class I, Div. 1, A-D Class II, E-G, Class III, Ex ia IIC T4 at Ta=80ºC, T5 at Ta=40ºC
Intrinsic Safety: II 1 G EEx ia IIC, -20ºC T4, Ta 50ºC
CE EMC Directive 89/336/EEC and Low Voltage Directive 72/23/EEC
EN 61010-101993/A2:1995: Low Voltage Standard
EN 61326: EMC Conformity Standard
PED Directive 97/23/EC EMC Directive 89/336/EEC


Mini change electrical connector
Micro change electrical connector
Extra lead length (6 ft standard)
DG Improved temperature and compensation
DK Special shunt calibration
EA Special calibration run
NG ATEX Flameproof label
NH Customer specified identification
NJ CE label
NK ATEX Intrinsic Safety label
NSR Non standard range
NX CSA Intrinsic Safety label
NZ FM Nonincendive label
TF FM Intrinsic Safety label
TJ CSA Div / Zone 2
TW Russia Intrinsic Safety
VD G2” retaining nut
Z () Alternate electrical connection
ZU irect coupled cable


Pipe Saddle with shutoff
Conduit connection box
Calibration text fixture