Sensor signal conditioning trend recording

ROI products are designed with system compatibility in mind. ROI-USB, ROI-XMA, & ROI-ISOV combined as integrated packages, are standard not special. The various series of ROI devices are each building blocks, that may be used as expansion or retrofit components; to enhance the capabilities of many existing systems.

Robert Owen Inc.'s transmitters are easily connected to: data acquisition devices (such as PC A-D's) or controllers (such as PLC's). A typical example of this is; an existing PLC system or RTU, where a 4-20mA channel is available, but a requirement is added for an additional measurement of temperature. The ROI-XMA RTD or Thermistor transmitters allow the conversion of a temperature sensor to 4-20mA, providing signal capability with the existing 4-20mA channel. This can help eliminate potential difficulties faced, when system expansion may not be done without great difficulty.

Some examples of expansion difficulty are: limited space, limited device expansion capability, the high cost or lack of availability of direct sensor measurement cards for the PLC or RTU, excessive distance between the PLC or RTU & the sensor, etc. Using the right signal conditioner, expanded capabilities can be added to an existing, eliminating these difficulties.

• Resistance transmitters configured as temperature transmitters, for use with temperature sensors such as Thermistors and RTDs. 

• Resistance transmitters configured as position transmitters, for reading position sensors such as potentiometers. 

• Resistance transmitters configured as pressure transmitters, to be used for reading bridge pressure sensors. 

• Resistance transmitters configured as mV transmitters, to be used as bridge or voltage transmitters for reading a variety of other sensors.

Beyond this, the component ROI devices are by design signal compatible with each other. In applications where a PC is available, but the need arrives for a mixed signal monitoring system; a combination of ROI devices can be used together to form combined systems.

Robert Owen Inc., produces; USB analog to digital converters, Windows XP PC compatible, USB sensor signal adapters; for real time sensor data acquisition of voltage, current, and resistance based sensors; the ROI-USB. Useful for measurement of resistive temperature sensors, such as thermistors (2252 ohm and 10k ohm) and RTDs (PT1000, 1000 ohm platinum), 4-20ma transmitters (temperature transmitters, such as thermistor transmitters and RTD transmitters), power transmitters (when used with galvanic isolators), etc. The ROI-USB can be an integral part of mixed sensor signal conditioner systems.

Robert Owen Inc.'s analog USB adapters (or USB A-D's) measure voltage, current, and resistance; when the right signal conditioning is used. Recording instruments, such as the ROI-USB A-D, can be used to monitor a range of sensors and signals; to read temperature sensors (such as the RTDs and the Thermistors), position and level sensors (such as potentiometers), or power (through the use of: voltage isolators, voltage dividers, & shunt resistors as necessary). By using current transmitters (such as ROI-XMA 4-20mA transmitters) or isolation amplifiers (such as ROI-ISOV) as signal conditioners (instrumentation amplifiers for sensor signal conditioning), sensor signals can to be instrumented for real time monitoring or data acquisition.

With software tools like OPC Servers and DDE Servers; turn Excel into a real time display and data acquisition program. Compatible software tools, to turn the USB A-D's into Data Acquisition Systems. Excel temperature measurement allows Temperature Recorders, Temperature Profile monitoring, USB Thermometer, and a variety of other instrumentation applications are possible.

Robert Owen Inc.
PO Box 227
Albertson, NY 11507
Phone 516-629-5134 Fax 516-706-1705

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