SOLANUS – pressure transmitter

Pressure transmitter in splash-proof IP65 housing without LCD

  • Processor controlled linearization
  • Taring at the push of a button
  • USB port (internal, external optional)
  • Bidirectional USB communication
  • (optional) large LCD display
  • 5 selectable units
  • 9-stage damping
  • Screwless housing
  • Protection class IP65
  • Bluetooth interface (optional)

The SOLANUS.usb pressure transmitter has been specially developed as a USB special edition of the SOLANUS series for use at the USB port of a notebook or tablet.

The “small brother” of the SOLANUS comes in a small, robust metal housing and can be controlled and powered by the USB port of a notebook or tablet. It is therefore perfect as a mobile companion for all measuring tasks.

The output of the measured value or the signal transmission / control is effected digitally via the integrated serial-USB converter and can be implemented with free software.


The SOLANUS.usb can be operated with various types of devices (notebooks, tablets, smartphones) as well as various operating systems.

For the stationary use of the SOLANUS.usb, a version with an external 5V power supply is available as an alternative.

By using high-quality 16-bit digital-to-analog converters, the device can be optionally extended by a precise and low-noise 4 … 20 mA current output.

As with the normal SOLANUS, the SOLANUS.usb is digital linearized, and thanks to state-of-the-art processing technology and temperature-compensated sensors, the same excellent accuracy is achieved.

Of course all the relevant functions of the SOLANUS are available:
The device can be tared via the integrated push-button, the software and for versions with external voltage supply (and / or 4 … 20mA signal output) also via an externally connected push-button.
The adjustable 9-stage damping is used to stabilize the display during fluctuating or pulsating pressures. The damping is also adjusted via the software as well as the switching of the various units.

The devices are calibrated with air by default, but are also suitable for the measurement of other dry, non-corrosive gases.

Whether as a handy, mobile companion or stationary, the SOLANUS.usb delivers the best results with the smallest dimensions and thus becomes the “Swiss Army knife” among the portable pressure measuring devices.

General specifications

Device name

Model name

Order number


LDT1 / (LCD-version)

Measuring ranges


  • 10 mbar – difference
  • 20 mbar – difference
  • 50 mbar – difference
  • 100 mbar – difference
  • 200 mbar – difference
  • 500 mbar – difference
  • 1000 mbar – difference
  • 2000 mbar – difference
  • 5000 mbar – difference
Accuracy ± 0,5% rd. + 0,5% fs.
Dynamics 1:10 (10…100%)
Resolution (switchable)

0,001 / 0,01 mbar

0,01 / 0,1 mbar

0,1 / 1 mbar

up to full scale 50 mbar

up to full scale 500 mbar

up to full scale 5000 mbar

Additional selectable units kPa, PSI, Torr, inHg
Sensor technology

Piezoresistive sensor,

temperature compensated

Pressure direction

Bi- or unidirectional sensor

The positive overpressure at port P+ is calibrated


Signal outputs
Voltage output

0..10V – bidirectional sensor


Current output (optional)
  • 4…20mA – unidirectional sensor
  • 16…20mA – bidirectional sensor*
Digital output USB serial converter integrated, bidirectional communication


Power supply
Power supply 12V…24V DC / regulated
Power consumption

Typical 55mA at 12V, 40mA at 24V

plus current output

Electrical connection

4 pin. connector, type Conec SAL8








Operating limits
Temperature range 0…50°C
Max. permissible pressure

Measuring ranges up to 100 mbar: 10 x full scale

Measuring ranges up to 2 bar: 2 x full scale

Measuring ranges up to 5 bar: 7 bar

Warm-up time 10 min for optimal results
Medium Air and dry, non corrosive gases


USB interface
USB port USB type B / mini
Transmission parameters

Baud rate: 9600

Data bits: 8

Stop bits: 1

Parity: none

Flow control: Xon / Xoff


Mechanical properties
Pressure connections

Hose connection with union nut:

  • 6/4 (4mm inside) – standard

Plug-in hose connection:

  • 6/4 (4mm inside)
Dimensions 155 x 80 x 70 mm
Weight 400 g
Enclosure material ABS
Mounting position Any
Protection class Splash-proof IP65


Scope of supply
Accessories (included)

Connector 4-pin, incl. Cabel 2m,

Type Conec SAL8 (SAL8 RS42)

* On request (not available for all devices)



Data sheet:

Operating instructions, software and further downloads can be found here.

LCD display Large graphics display
USB interface External IP65 protected USB interface
Current output
  • 4…20mA
  • 16…20mA*
Digital output Bluetooth, virtual com-port
Enclosure Tool-less opening

* On request (not available for all devices)


Questions to the product:

Here are some answers: +49 (0)9082 / 918 2221 or

To the shop / quote: