EPN-S 8320 – Electronic Pressure Switch

The Electronic Pressure Switch EPN-S is based on the well-proven EPN transmitter family. It stands for reliable accuracy over a wide temperature range and excellent long-term stability even in harshest environments in the shipbuilding and railway industry. The switchpoint is factory set or can be programmed on site using Trafag’s Sensor Communicator SC.


  • Rugged design for harsh environments
  • Wide temperature range
  • Excellent long-term stability
  • Very compact design
  • Switchpoint factory set or programmable on site with Trafag Sensor Communicator SC
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Technical Data


Shipbuilding, Engine manufacturing, Railways, Machine tools, Hydraulics, HVAC


Pressure transmitters

Accuracy @ 25°C typ.

± 0.5 % FS typ. (Switchpoint)

Dielectric strength

250 VAC, 50 Hz
500 VAC, 50 Hz

Measuring principle


Approval / conformity

EN 50155 (Railways)
EN 45545-2 (Fire protection, railways)


15 g (50...2000 Hz)

Pressure connections

G1/4" m (Seal);
1/4"NPT m;
G1/2" m, DIN3852-A;
M14x1.5 m, DIN3852-A;
1/2"NPT m

Media temperature

-40°C ... +125°C


50 g / 11 ms

Electrical connections

EN175301-803-A (DIN43650-A); Cable

Long term stability 1 year typ.

≤ ± 0.15 % FS typ.

Ambient temperature

Standard: -25°C ... +85°C
Option accessory 67: -40°C ... +125°C


Electrical connection 04: IP65 (IP67)
Electrical connection 78/88: IP69K

Output signal

Transistor (open source)

Measuring range

0 ... 2.5 to 0 ... 600 bar
0 ... 30 to 0 ... 7500 psi