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Model 544 Pressure Transmitter

4-20 mA, 5" WC to 100 psi, Hazardous approvals

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Viatran’s Model 544 is a low pressure gage transmitter designed for precise measurement in hazardous locations. External adjustments allow for field calibration and ranging to provide measurement flexibility.


Request a Quote

Features

High Accuracy
Many Options available


Product Selection


The 544 features a special internal calibration signal that allows users to calibrate the transmitter without an external pressure source. The 544 provides a 4 to 20 mA output signal measuring pressures from 0 to 5" WC thru 0-100 PSIG. External zero, span, and calibration controls are hermetically sealed for protection against harsh environments. These controls are externally adjustable with Viatran’s unique magnetically coupled drive system.

Model 544 also has a signal conditioner that allows for 5:1 ranging of the transmitter’s standard pressure range (FSPR).
Designed to meet intrinsically safe standards, the 544 provides reliable and safe pressure measurement in harsh process applications.

Performance
Full Scale Pressure Ranges
0-5, 10, 20, 50, 100, 300, 750" W.C.G
0-15, 50, 100 PSIG
0-15 PSIV
Nonlinearity (Best Fit Straight Line)
≤±0.15% FSO
Hysteresis & Repeatability
≤±0.10% FSO
Full Scale Output (FSO)
16 mA at 70° F
Long Term Stability
≤±0.2% FSO per 6 months
Compensated Temperature Range
70°F to 170°F (21°C to 76°C)
Operating Temperature Range
5"WC to 50"WC 0° F to +170° F
100"WC to 100 PSI -40° F to +170° F
Storage Temperature Limits
5"WC to 50"WC 0° F to +170° F
100"WC to 100 PSI -40° F to +170° F
Temperature Effect on Zero
<± 1.0% FSO per 100° F
Temperature Effect on Span
<± 1.0% FSO per 100° F
Electrical
Supply Voltage
8.5 to 40 Vdc
Power Supply Regulation
±0.02% FSO per volt
Output Signal
4-20 mA at 70° F
Load Impedance
1500 Ohms maximum at 40 Vdc
Zero Adjustment
Elevation -100% of FSO
Suppression +50% of FSO
Span Adjustment
Rangeable down 5:1 from standard range
Calibration Signal
20% of FSPR, externally switched
Calibration Signal Accuracy
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 8x20 µ Sec.
Reverse polarity protected
Insulation Resistance
< 5 nS
RFI / EMI Suppression
<1.0% FSO from 0 to 15 MHz at 2V peak to peak direct contact
Electrical Connections
1/2" NPT Male, 3 Wires, 18 AWG, 36"
Connection Color Codes
Red + Power / Signal
Black - Power / Signal
Green Case Ground
Materials of Construction
Wetted Parts
316 Stainless steel
Housing
316 Stainless Steel with a Cadmium plated electrical connector
Weight
3.5 lbs. nominal
Identification
Laser etched onto body
Mechanical
Pressure Connection
1/4" - 18 NPT female
Proof Pressure
500 PSI
Burst Pressure
1000 PSI
Shock Limitation
5 Gs
Fill Fluid
Silicone oil
Enclosure Classification
NEMA 4X
Mounting
May be supported by process piping or by optional mounting bracket
Options
PERFORMANCE OPTIONS
DK
Special shunt calibration setting
DQ
Cleaning for oxygen service
EA
Special calibration run
GE
Buna-N “O”-Ring
JJ
Direct mount indicator w/ explosion proof housing
JS
Direct mount indicator
MD
FM label
NF
Fast response time
NH
Customer specified identification
PW
1/8 DIN digital indicator
ALTERNATE PRESSURE PORTS
YA
MS 33649-04
YH
1/8 NPT(M)
YI
1/8 NPT(F)
YK
1/4 NPT(M)
YN
3/8 NPT(F)
Note:
Application of some available options may affect standard performance. Consult your Viatran representative for details.

Model 544 Pressure Transmitter

Product Thumbnail

Model 544 Pressure Transmitter

4-20 mA, 5" WC to 100 psi, Hazardous approvals

Viatran’s Model 544 is a low pressure gage transmitter designed for precise measurement in hazardous locations. External adjustments allow for field calibration and ranging to provide measurement flexibility.


Request a Quote

Performance
Full Scale Pressure Ranges
0-5, 10, 20, 50, 100, 300, 750" W.C.G
0-15, 50, 100 PSIG
0-15 PSIV
Nonlinearity (Best Fit Straight Line)
≤±0.15% FSO
Hysteresis & Repeatability
≤±0.10% FSO
Full Scale Output (FSO)
16 mA at 70° F
Long Term Stability
≤±0.2% FSO per 6 months
Compensated Temperature Range
70°F to 170°F (21°C to 76°C)
Operating Temperature Range
5"WC to 50"WC 0° F to +170° F
100"WC to 100 PSI -40° F to +170° F
Storage Temperature Limits
5"WC to 50"WC 0° F to +170° F
100"WC to 100 PSI -40° F to +170° F
Temperature Effect on Zero
<± 1.0% FSO per 100° F
Temperature Effect on Span
<± 1.0% FSO per 100° F

Electrical
Supply Voltage
8.5 to 40 Vdc
Power Supply Regulation
±0.02% FSO per volt
Output Signal
4-20 mA at 70° F
Load Impedance
1500 Ohms maximum at 40 Vdc
Zero Adjustment
Elevation -100% of FSO
Suppression +50% of FSO
Span Adjustment
Rangeable down 5:1 from standard range
Calibration Signal
20% of FSPR, externally switched
Calibration Signal Accuracy
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 8x20 µ Sec.
Reverse polarity protected
Insulation Resistance
< 5 nS
RFI / EMI Suppression
<1.0% FSO from 0 to 15 MHz at 2V peak to peak direct contact
Electrical Connections
1/2" NPT Male, 3 Wires, 18 AWG, 36"
Connection Color Codes
Red + Power / Signal
Black - Power / Signal
Green Case Ground

Model 544 Pressure Transmitter

High Accuracy
Many Options available

The 544 features a special internal calibration signal that allows users to calibrate the transmitter without an external pressure source. The 544 provides a 4 to 20 mA output signal measuring pressures from 0 to 5" WC thru 0-100 PSIG. External zero, span, and calibration controls are hermetically sealed for protection against harsh environments. These controls are externally adjustable with Viatran’s unique magnetically coupled drive system.

Model 544 also has a signal conditioner that allows for 5:1 ranging of the transmitter’s standard pressure range (FSPR).
Designed to meet intrinsically safe standards, the 544 provides reliable and safe pressure measurement in harsh process applications.

Materials of Construction
Wetted Parts
316 Stainless steel
Housing
316 Stainless Steel with a Cadmium plated electrical connector
Weight
3.5 lbs. nominal
Identification
Laser etched onto body

Mechanical
Pressure Connection
1/4" - 18 NPT female
Proof Pressure
500 PSI
Burst Pressure
1000 PSI
Shock Limitation
5 Gs
Fill Fluid
Silicone oil
Enclosure Classification
NEMA 4X
Mounting
May be supported by process piping or by optional mounting bracket

Options
PERFORMANCE OPTIONS
DK
Special shunt calibration setting
DQ
Cleaning for oxygen service
EA
Special calibration run
GE
Buna-N “O”-Ring
JJ
Direct mount indicator w/ explosion proof housing
JS
Direct mount indicator
MD
FM label
NF
Fast response time
NH
Customer specified identification
PW
1/8 DIN digital indicator
ALTERNATE PRESSURE PORTS
YA
MS 33649-04
YH
1/8 NPT(M)
YI
1/8 NPT(F)
YK
1/4 NPT(M)
YN
3/8 NPT(F)
Note:
Application of some available options may affect standard performance. Consult your Viatran representative for details.

Model 544 Pressure Transmitter

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