High performance pressure transducer

Model 28H Barometric Pressure Transmitter

Model 28H Barometric Pressure Transmitter

Viatran's Model 28H pressure sensor is among our most accurate pressure transmitters for industrial test and research applications. The 28H measures barometric pressure from 25" to 32" HgA with Improved Accuracy of ≤±0.06% FSO available.


Full Scale Pressure Ranges:
25" to 32" HgA
(Optional ranges can be factory set from 0” to 32” HgA with a minimum 7” HgA span)
Nonlinearity (Best Fit Straight Line):
≤±0.1% FSO (≤±0.06% FSO with DN option)

Accuracy (RSS*):

≤±0.21% FSO** 
≤±0.13% FSO each


≤±0.13% FSO each

Full Scale Output (FSO):

5 Vdc ≤±0.5% FSO at 70°F (21°C) Standard
10 Vdc ≤±0.5% FSO at 70°F (21°C) Optional
  Long Term Stability: ≤±0.5% FSO per 6 months (typical)
Compensated Temperature Range: 32°F to 170°F (0° to 77° C)
Process Media Temperature Range: -40°F to 250°F (-40°C to 121°C)
Ambient Operating Temperature Range: -40°F to 185°F (-40°C to 85°C)
  Storage Temperature Limits: -40°F to 185°F (-40°C to 85°C)
Temperature Effect on Zero: ≤±0.01% FSO per 1°F (.556°C)
Temperature Effect on Span: ≤±0.01% FSO per 1°F (.556°C)


Supply Voltage:
8 to 30 Vdc at 3.5 mA nominal, 5 mA max
12 to 30 Vdc (10 Vdc Output Option)
Power Supply Regulation:
≤±0.01% FSO per volt change over the supply voltage range
Output Signal:
0 - 5 Vdc (Standard)
0 - 10 Vdc (Optional)
Load Resistance: 100K Ohms minimum

Circuit Protection:

Input polarity may be reversed. Output may be short-circuited indefinitely Over voltage protection to 1000 volts according to EN61000-4-5

Insulation Resistance

<5 nS to case ground

Response Time

<2 mSec to reach 90% of full scale

RFI / EMI Suppression

CE EMC compliant per IEC EN 61326-1 & 61326-2-3 Annex BB, CE marked

Electrical Connection

Bendix / Amphenol PT02E-10-6P, mates PT06E-10-6S (SR)

Pin Outs

Pin A + Power
Pin B - Power
Pin C + Signal
Pin D - Signal
Pin E No connection
Pin F No connection





Wetted Parts
316 stainless steel
304 SS with an Aluminum alloy, black zinc-cobalt plated electrical connector
10 oz (283 g)


Pressure Connection:
1/4" - 18 NPT female
Proof Pressure:
45 PSI (92 HgA)
Burst Pressure:
75 PSI (153 HgA)

Pressure Cavity Volume:

1.5 mL


May be supported by process piping


No Options:

No options