Yes you can, you will need to use an EL037 convertor and then use a PT100 or PT1000 4-20mA transducer. The EL037 convertor can take 4 inputs, each can be adjusted to take +/-2.5V, +/-10V or 4-20mA inputs, it can then be scaled in software to read accordingly:http://www.picotech.com/e_converters.html#el037
If you require more information about using third party sensors or doing more with EnviorMon, we have three EnviroMon Value added resellers, who can help with more specialist applications.
Where are you based? Depending on the part of the globe you are in they can help:http://www.picotech.com/enviromon-distributors.html