Description
The EOME is a two-channel IO-Link transducer as an OEM board, type MEUT-E.
Channel 1 measures a strain gauge full bridge, Channel 2 a temperature sensor – and both measured values are transmitted via a common IO-Link interface. This is the case for which this board is built: force or pressure and the corresponding temperature from one device, with one cable and one master port.
The universal channel does not support strain gauge bridges. The datasheet lists them in the sensor list, but states below that strain gauge applications for the universal channel are not yet supported. If you need two force channels, you cannot use this board for that today.
Channel 1 accepts a strain gauge full bridge from 350 Ω, with two bridges at least 2 × 700 Ω, with a bridge supply of 3 V; the unit of measurement is dimensionless. Channel 2 is preset to °C and accepts Pt100 in a 3-wire circuit from -200 to 800 °C at 0.9 mA sensor current or a thermocouple of type J (-210 ... 1200 °C), type K (-200 ... 1372 °C) or type N (-200 ... 1300 °C). The measuring range of both channels can be freely set in the range -3200.0 ... +3200.0.
The resolution is 16 bit on the strain gauge channel and 24 bit on the universal channel, the accuracy max. 0.05% of the measuring range plus sensor error. The filters are separate: 0.5 s for strain gauge, 25 s for temperature. The power-on delay is less than 5 s, the response time is 20 ms. The board is supplied with 24 VDC at less than 30 mA in standard operation, maximum 130 mA total current; reverse polarity is protected.
The board measures 40 × 17 × 8.25 mm and weighs about 6.5 g. The height comes from the construction: It consists of two stacked boards. The single-channel version with the same outline is only 4.5 mm high. Material FR4 and PBT, connection via solder pads 2.7 × 1.5 mm, installation position arbitrary, operating range -20 °C to +80 °C.
An IO-Link master is required for configuration and operation, as well as the appropriate IODD file from the IODD Finder. The board has IP00 and must be installed in a housing. It has been tested according to EN 61000-6-2:2005 and EN 61000-6-4:2007 + A1:2011. A CE mark is not documented in the manufacturer's datasheet; a declaration of conformity must be requested before placing it on the market in the EU. A version with integrated safety function PL c / SIL 1 is the EOMF.
Regarding the price: The price is for the board in its basic version. The measuring ranges of both channels are freely adjustable via IO-Link, so factory programming is not required. However, if you wish to have the board programmed to your measuring ranges at the factory, this is possible at an additional cost — please ask us about it.
Advantages at a glance
- Two channels on one board: strain gauge full bridge and temperature sensor
- Channel 2 for Pt100 (3-wire) or thermocouple type J, K and N
- Resolution 16 bit on the strain gauge channel, 24 bit on the universal channel
- Accuracy max. 0.05% of the measuring range
- Separate filters: 0.5 s for strain gauge, 25 s for temperature
- Both measured values via one IO-Link interface
- 40 × 17 × 8.25 mm, two stacked boards, approx. 6.5 g
- Operating range -20 ... +80 °C