delta V / delta V-P / delta P

Vacuum- / Pressure Switch digital for Gauge Pressure -1...0 / -1...+1 / 0...+10 bar

These electronic vacuum and pressure switches are trendsetting in view of technology and design. The series „delta“ is designed as an electronic switch with state-of-the-art technology and best price-performance ratio for usage in all kind of handling and many other industrial automation systems. The calibrated and temperature compensated sensor generates high-precision signals which are processed by an integrated circuit and transformed to two open collector output signals. Two switchpoints with the corresponding hysteresis and switching logic can be adjusted independent of each other.

The programming with the push buttons can be done with or without present pressure and a menu navigation facilitates this procedure. The sensor can be ordered with G-thread, NPT-thread or flange-adapter.

  • With Display
  • 2 x Transistor-Output-Signal
  • Menu-Driven-Handling
  • Key Lock Function
  • Revolvable Housing
  • M8-Electrical Connection


Electrical / General Data
Operating Voltage 10,8 – 30 V (inverse-polarity protection)
Current Consumption < 30 mA
Output Signals 2 x PNP-Transistor NO / NC programmable with max
250 mA switching current each
On-/Off-Delay time 0...180 sec. programmable
Linearity ≤ 1%
Repeatability ± 0,2 % FS
Hysteresis 0-100 % FS programmable
Response Time typ < 2,5 ms
Error Code indicated with display
Insulation Resistance > 100 MΩ at 500 VDC
Voltage Withstandability 1000 VDC 1 min
Mechanical Data
Material Housing Plastics ABS - PC
Material Pressure Port brass nickel-plated
Weight approx. 25 g
Electrical Connection M 8x1 (4-pole)
Pressure Port 1/8“ with M5 inside (optional NPT 1/8“)
Acceptable Fluid filtered, dry or oiled air and non-corrosive gases
Position arbitrary)
Temperatures Operation: -10°... +50°C
Storage: -20° - +85°C
max. Overpressure max. 5 bar / max. 16 bar (10bar-Version)
EMC according EU-directive 2004/108/EG
General Facts
Protection Class SELV
Protection Category IP65
Model* Order-No. Range (bar)
delta Vacuum S.33.400 0 ... -1
delta Vacuum-pressure S.33.401 -1 ... +1
delta pressure S.33.402 -1 ... +10

*more types on request

Electrical Connector Sensor

Pin Assignment Color Cable
1 Ub+ brown
2 1-5V analog white
3 0 V blue
4 OUT 1 black


delta V / delta V-P / delta P

Download: PDF-Document


Connector Cable Order-No.
M8-cable, 5m, PVC, 4-pole, 90° S.110.26.310
M8-cable, 5m, PVC, 4-pole, straight S.110.26.300
Adapterfl ange and Bracket
Flange Adaptor S.080.41.730
Flange adaptor plus bracket S.080.40.610
Adaptor G1/8“ to G1/4“ S.080.38.614
Protection Casing
Protection Casing delta transparent Ø 25mm S.080.40.555
Screw Connection and Bracket
Push-In-G1/8” for flexible tube Ø 4mm / 6mm S.080.385.64 / S.080.385.66
Push-In-G1/8” for flexible tube Ø 4mm / 6 mm plus bracket S.080.385.74 / S.080.385.76