Hazardous location transmitters

Model 548 Pressure Transmitter

Model 548 Pressure Transmitter

The “X48” Series features all welded stainless steel construction with 316L stainless steel wetted parts. Non-linearity is 0.25% or better with an optional improved non-linearity of better than 0.1%. Standard ranges are from 3 PSI to 5,000 PSI with available outputs of mV/V, 4-20 mA and 0-5 VDC. Also available are optional zero and span adjustments.


  Full Scale Pressure Ranges 0-3 thru 0-5000 PSIG, PSIS
0-15 thru 0-5000 PSIA
.0-15 PSIV
Linearity (Best Fit Straight Line) ≤ ±0.25%
"DN" Option- Improved Linearity ≤ ±0.1%
Hysteresis ± 0.05% FSO
  Repeatability ± 0.05% FSO
Full Scale Output (FSO) 16 mA ±1%
Zero Balance ≤ ±1% FSO
  LongTerm Stability ≤±0.25% FSO per 6 months
Response Time ≤ 1 mSec to reach 90% FSO
Temperature Effect on Zero ≤±1% FSO per 100°F (37°C)
Temperature Effect on Span ≤±1% FSO per 100°F (37°C)
Compensated Temperature 32°F to 180°F (0°C to 82°C)
  Operating Temperature -40°F to 185°F (-40°C to 85°C)
  Storage Temperature Limit -40°F to 250°F (-40°C to 121°C)
  * For PSIV and Compound Range units: Temperature Effect on Zero ≤±3.0% per 100°F
Compensated Temperature Range 32°F to 170°F (0°C to 77°C


Supply Voltage:
9.0 to 30 Vdc
Power Supply Regulation Effect
≤±0.05% FSO per Volt
Output Signal
4 - 20 mA
Load Resistance 12 Vdc min with 150 ohm and 30 Vdc max with 1050 ohms
Circuit Protection Output may be short-circuited indefinitely. Input polarity may be reversed. Over voltage protected to 1000 volts. <1 msec duration.
Insulation Resistance <5nS Conductance
Electrical Connection

1/2" NPT (M), 18 AWG wire, 72" long

Wire Color Codes

Red +Power/Signal

Black -Power/Signal

Green Case ground

White No Connection

Brown No Connection


Enclosure Housing
304 and 316 stainless steel
Wetted Parts
316 Stainless Steel
10 oz.


Pressure Connection:
1/4" - 18 NPT Female 1/4" - 18 NPT Female (0-3.3 thru 0-1034 bar
Proof Pressure:
<=500 PSI lesser of 3x or 1200 PSI
>=500 PSI lesser of 5x or 10K PS
Burst Pressure:
<=500 PSI lesser of 5x or 2400 PSI
>=500 PSI lesser of 5x or 10K PS
Mounting May be supported by pressure connection
Identification Laser etched onto body