PDP Check S 3-4 Mobile Dew Point Sensors

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3.5" graphic display

Easy to use touchscreen

Plug-in system

Everything wired and ready

2 alarm contacts (230 VAC, 3 A)

Pre-alarm and main alarm freely adjustable

An alarm delay can be set for each alarm relay

4-20 mA analog output

Option: Ethernet and RS 485 interface

Modbus protocol

Record dew point curve

Up to 100 million readings

PMH Basic for graphical and tabular evaluation

Read out data either via USB stick or Ethernet

The touch screen graphic display enables an intuitive operation and shows the progress of the measured values. Two alarm relays are available for monitoring of threshold values. Available either with a classic analogue output 4-20 mA or optionally with digital interfaces like Ethernet and RS 485 (Modbus protocol). As a stand-alone solution the measured data stored in the optional data logger can be read out via USB stick and evaluated by means of the software PMH Soft Basic.

Technical data PDP Check S3/S4



118 x 115 x 98 mm IP 54 (wall housing) 92 x 92 x 75 mm (panel mounting)


2 digital inputs for PDP Sens 1/2 resp. Flow Check


USB interface

Power supply

100-240 VAC, 50-60 Hz


please see PDP Sens 1/2

Alarm outputs

2 relays, (pot. - free)



Data logger

100 million measuring values start/stop time, measuring rate freely adjustable

2 additional sensor inputs

for connection of pressure sensors, temperature sensors, clamp-on ammeters, third-party sensors with 4-20 mA 0 to 10

V, Pt 100, Pt 1000

Dew Point Sensors

Knowing the dew point of their compressed air allows users to dry it more efficiently while ensuring that it does not contain too much moisture. Dew sensors play an important role in this regard. They allow compressed air users to always keep an eye on the air’s dew point and to take the necessary steps to control it – all while only drying it as much as needed. And that can save a lot of energy.