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

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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