Danfoss MEP Electronic Pressure Switches

 

 

Danfoss MEP Electronic Pressure Switches
MEP

 

 

Improve safety and reduce maintenance costs

An electronic pressure switch offers a multitude of advantages in comparison to a mechanical pressure switch.

These advantages include greater accuracy, freedom from contact wear out, excellent long-term stability, simpler operation and a high number of switching cycles, and many more.

Advanced electronic pressure switches

Danfoss’ electronic pressure switch MEP 2000 series offers advanced control to improve safety, extend equipment lifecycles and reduce maintenance costs.

The electronic pressure switch is available in two versions. The single switch output version has customised hysteresis and time constant. It also features protection against short circuits, incorrect wiring and overloading. The dual output version includes both switch and analogue outputs. For both versions the switch is defined by the customer and pre-programmed in our factory.

Both versions can be supplied with a pulse-snubber to protect the sensor in applications exposed to cavitation, liquid hammer and pressure peaks.

MEP 2200 and MEP 2250 versions:

For use in Mobile Hydraulic applications Dual output

Output 1: Switch output

  • Hysteresis 1% FS
  • Time constant 1 mS Output 2: Analogue output
  • Ratiometric or absolute voltage output

MEP 2600 and MEP 2650 versions:

For use in Mobile Hydraulic, Industrial Hydraulic and Air Compressor applications

Single output

Output 1: Switch output

  • Hysteresis 1 – 8% FS
  • Time constant 8 – 512 mS
  • Immunity towards VFD

The series are available in 2 versions:

  • MEP 2200 and MEP 2600 – without integrated pulse-snubber
  • MEP 2250 and MEP 2650 – with integrated pulse-snubber

The integrated pulse-snubber offers a high degree of protection against cavitations and liquid hammer. The well thought out design results in excellent vibration stability and an exceptional robustness.

The high degree of EMI protection equips the electronic pressure switch to meet most requirements.

Features

  • Designed for use in severe OEM applications
  • Excellent long term stability with zero drift
  • No leakages due to fully welded design
  • Wetted parts made of stainless steel
  • For medium and ambient temperatures up to 125 °C
  • Dual output versions with switch function and an analogue output signal: 0 – 5 V, 1 – 5 V, 1 – 6 V, 0 – 10 V, 10 – 90% ratiometric voltage as additional output
  • Switch versions with customized hysteresis and time constant
  • A wide range of pressure and electrical connections
  • EMC protection up to 100 V/m
  • Thermal overload protected

    Another Article:

Approvals

  • UL 508 recognized

Specifications

Technical Data

Performance (EN 60770)

MEP 2200 and MEP 2250 MEP 2600 and MEP 2650
Dual output (Switch and Analogue

– output)

Switch output (Switch – output)
Switch Hysteresis ~ 1% FS 1 – 8% FS
Switch Time delay 1 mS 8 – 512 mS
Accuracy (incl. non-linearity, hysteresis and repeatability) 2% FS 2% FS (1 – 5% Hysteresis)

3% FS (6 – 8% Hysteresis)

Thermal accuracy < ± 0.15% FS / 10K < ± 0.15% FS / 10K

Overload and burst pressure – without pulse-snubber

Nominal pressure [bar] 10 16 25 40 60 100 160 250 400 500 600 1000* 1600* 2200*
Overload pressure 30 48 80 80 140 200 320 500 800 1400 1400 2000 2500 3000
Burst pressure 400 640 800 800 1400 2000 1600 2500 4000 > 4000 > 4000 > 4000 > 4000 > 4000

Overload and burst pressure – with integrated pulse-snubber

Nominal pressure [bar] 10 16 25 40 60 100 160 250 400 500 600
Overload pressure 30 48 120 120 210 300 480 750 1200 2100 2100
Burst pressure 400 640 800 800 1400 2000 1600 2500 4000 > 4000 > 4000

Electrical Specifications

 

Type

MEP 2200 and MEP 2250 MEP 2600 and MEP 2650
Dual output (Switch and Analogue – output) Switch output (Switch – output)
Max. load 1) 500 mA 500 mA
Electrical connector types See page 8 See page 8
Max. inrush load 1.6 A 600 mA
Supply voltage 8 – 32 V
Over/reverse voltage ± 36 V ± 33 V

Secondary output reference for MEP 2200 and 2250

 

Nom. output signal (Short-circuit protected)

NPN and PNP NPN
0 – 5, 1 – 5, 1 – 6 V 0 – 10 V 10 – 90%

ratiometric

Supply voltage [UB], polarity protected 8 – 32 V 12 – 32 V
Supply – current consumption 4.5 mA 4.5 mA 4.5 mA
Output inpedance ≤ 90Ω ≤ 90Ω ≤ 90Ω
Load [RL] (connected to 0 V) RL ≥ 10kΩ RL ≥ 10kΩ RL ≥ 5kΩ
Load [RL] (connected to + V) Not possible Not possible RL ≥ 5kΩ

Environmental conditions

Media temperature range – 40 – 125 °C
Ambient temperature range -40 – 125 °C
Compensated temperature range – 40 – 125 °C
Transport temperature range -55 – 150 °C
EMC – Emission EN 61326-2-3: 2013
EMC Directive 2014/30/EU
 

EMC – Immunity RF field

100 V/m, 26 Mhz – 1 Ghz  

EN 61326-2-3 Cable < 30 m

3 V/m, 1.4 GHz – 2.7 GHz
 

Electrical performance comply with

ISO 7637 pulse 1 – 4 V (MEP 26XX)
ISO 7637-2 / ISO 16750 (MEP 22XX) (pulse 5b <45 V)
Vibration stability 20 g, 10 – 2000 Hz, sinus EN 60068-2-6
Shock resistance 100 g EN 60068-2-27
Enclosure (depending on electrical connection) see page 8

Mechanical conditions

 

 

Materials

Wetted parts 17 – 4 PH
Enclosure AISI 304 or plastic
Pressure connection 17 – 4 PH
Electrical connection see page 8

Download Datasheet : Danfoss MEP Electronic Pressure Switches

Reference : danfoss.com