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OEM Module for Online pH Measurement
Electro-Optical Module EOM-pH-PHB50
The EOM-pH-PHB50 is a precise, single channel module for non-invasive pH measurement. It is compatible with sensor types HP5 & HP8 (pH 5.5 – 8.5). The small outer dimensions and low power consumption make it very easy to integrate this board in custom monitoring and control systems. EOM-pH-PHB50 uses RS232, RS485 or USB 2.0 as digital interface. A serial communication protocol is offered for data exchange between a PC or another host unit and the EOM. Additionally, the device has 4 to 20 mA analog output and a Pt100 temperature sensor interface for temperature compensation of the pH measurements.
- Compatible with sensors type HP5 & HP8
- Small dimensions & low power consumption
- Communication via RS232, or RS485 (PreSens proprietary or Modbus RTU)
- 4 to 20 mA (current sink) analog output
- Pt100 temperature sensor interface
Applications
Pharma Industry: pH Monitoring in Bags
Bags and single-use bioreactors are in the process of revolutionising the way biopharmaceuticals are manufactured. Our non-invasive pH sensors are the tools to make the cultivation vessels fully disposable. As non-invasive DO sensors are also available, the two key parameters oxygen and pH can be controlled online.
Simple Connection to PLC
PLC programming can be a challenging and time-consuming task. Establishing a stable working connection to third-party hardware via interfaces such as RS485 is error prone. PreSens offers you the right support! We provide LAD-schemes and SCL-scripts, the corresponding TIA-project files and even wiring tables to help you connecting your EOM boards to a Siemens-S7-(1200-)PLC, nearly instantly. Nothing stands in the way of further development into company-specific solutions such as process control. Contact our service team!
Technical
| Specifications | |
|---|---|
| pH sensors | HP5, HP8 (optical SMA connector) |
| Phase resolution | 0.01° |
| Sampling rate | 0.11 sec. – 599.9 sec. |
| Temperature sensor | Four-wire Pt100 sensor interface |
| Temperature performance | 0.1 °C + Pt100 accuracy |
| Supply voltage | 5 – 28 VDC |
| Power consumption in active mode | 0.75 W |
| Power consumption in stand-by mode | 0.25 W |
| Temperature: operating / storage | From 0 °C to + 50 °C / from - 10 °C to + 70 °C |
| Relative humidity | 0 % to 80 % (non-condensing) |
| Dimensions (L x W x H) | 94.2 mm x 25.0 mm x 19.6 mm |
| Weight | 39 g |
| Digital interface | RS232, optionally RS485 (PreSens proprietary or Modbus RTU) USB 2.0 |
| 1Depends on hardware configuration and parameter settings. < 0.7 s only possible without temperature sensor. | |
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