Hammer Union Pressure Transmitter - Model 511

The product features 4-20 mA output, 2" 1502 fitting, hazardous location approvals.

The 511 is Viatran's state of the art hammer union pressure transmitter comprising of industry exclusive features that were created in direct response to requests from the field. Included in these features is a voltage powered shunt cal, potential to calibrate and track pressure spikes using HART® Communicators or DevCom2000-Lite software and packaged in a patented* housing capable of withstanding extreme vibration and abusive impact and still continuing to perform to specification.


  • RoHS compliant
  • High pressure applications
  • ShuntCal
  • IP-68 rated
  • 1502 Hammer Union Pressure Fitting
  • Shunt calibration
  • Easy Access Connector Housing - 77% greater area
  • Expanded compensated temperature range
  • Enhanced sealing method for connector pins
  • External adjust, identification and peak pressure capture
  • Patented* Design capable of withstanding extreme vibration and abusive impact
  • Impervious to fluid ingress with patented angled connector base, drain holes, and sealing method

*EU Patent No. 002334250-001
*CN Patent ZL 201330 527540.1
*US Patents D711266 , US 9,607,596 B2


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Full Scale Pressure Ranges 0-5 K, 0-6 K, 0-10 K, 0-15 K, 0-20 K PSIS
Combined Accuracy (BFSL) (Non-Linearity, Hysteresis & Repeatability)
≤ ± 0.25% FSO
Full Scale Output (FSO) 16.00 mA ±1% FSO @70 °F
Zero Balance. 4 mA ±1% FSO @70 °F
Compensated Temperature Range -40 °F to 140 °F (4 °C to 60 °C)
Operating Temperature Range -40 °F to 185 °F (-40 °C to 85 °C)
Storage Temperature Range -67 °F to 302 °F (-55 °C to 150 °C)
Long Term Stability (%FSO) ≤ ± .25% FSO per 6 months
Thermal Effect on Zero ≤± 1% FSO per 100 °F Typical
Thermal Effect on Span ≤± 1% FSO per 100 °F Typical



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Output Signal 4-20 mA @70 °F
Supply Voltage 9-28 Vdc
Power Supply Regulation <± .01% FSO per volt
Load Impedance 900 ohms @ 28 VDC decreasing linearity to 0 ohms @ 9 VDC
Circuit Protection Reverse polarity protected
RFI / EMI <1% FSO output change with 3 V Rms from 150 kHz to 80 MGz

(80% AM modulated at 1 kHz) applied to power supply and signal lines

[IEC 61000-4-6 radio frequency common mode immunity],

1% output change when exposed to a radiated electromagnetic field of 10 V/m from 80 MHz to 1 GHz AM modulated at 1 kHz and 3 V/m

1.4 GHz to 2.7 GHz. [IEC 61000-4-3 Radiated electromagnetic field immunity]
Voltage Spike Protection Withstand 1000 volt spike per EN 61000-4-5
Insulation Resistance < 5 nS
Response Time < 1 millisecond to reach 90% of FSO
Range Calibration Signal 100% FSO ±10% by exciting pins E&F
Calibration Power Supply Voltage 8.5 -28 VDC
Calibration Signal Accuracy Readings on calibration certificate are within ±0.2% FSO of actual Cal signal output
Bridge Resistance 10 K ohms, nominal
Standard Electrical Connection Mates with 6 pin, Hermetic, Box Mount, Shell Size 10, MIL-C-26482 bendix type connector
PIN OUTS PIN A   + Power / Signal
PIN B   - Power / Signal
PIN C   No Connection
PIN D   No Connection
PIN E    + Calibration
PIN F    - Calibration



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Standard Pressure Port Male hammer union 2 inch #1502
Pressure Cavity Volume Standard: 0.45 cubic inches
Option "TP" : 0.22 cubic inches
Zero Effect from Installation 0.3% FSO w/200 ft-lbs torque on union #1502
Shock Sensitivity 1000 g, 0.5 ms half sine wave pulse shall not cause change in calibration
Proof Pressure 1.67X range or 22,500 PSI max
Burst Pressure 3 Times full scale pressure range, limited by union #1502: 22.5 K PSI


Materials of Construction

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Wetted Materials NACE compliant Inconel 718 (MR0175/ISO 15156-3:2009(E))
Enclosure Material 304 Stainless Steel
Identification Laser marked on body of unit
Enclosure Rating IP68*, NEMA 6P*
Weight 5.6 lbs. nominal

* Pending approvals


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DC Compensated temperature -40 °F to 140 °F
DG Improved temperature compensation
DH Special Range
DN Improved accuracy
EA Special Calibration Run
EH Compensated temperature range 40 °F to 180 °F
LW Narrow adapter for banding
NA Carrying handle attached
NH Customer specific identification
NP Protective ring cage
NQ Protective criss-cross cage
QJ 17-4 PH wetted material, heat treated per NACE MR0175-2000
Z() Special connectors


Hammer Union Pressure Transmitter

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