Installing Grab Sampler and PICO Controller Instruments

Hi guys,

I'm Installing an Auto Sampler on a Quality Loop System to Grab Sample from an Oil flow line. The Instruments Installed are Grab Sampler/Sample Drive 20CD (24VDC) from NuFlu Measurement Systems Company and Allen Bradley PICO Controller L12BWB. These Instruments are using Pulses, Now, how do i get the PICO controller to work with the Grab Sampler through the Potentiometer? Although, I'm not the Supplier of the whole unit, the Supplier refuses to provide the detailed wiring diagram and drawing.

Now. there is a 24VDC coming from the SCADA room that powers the Grab Sampler as well as the PICO controller, and also a BS&W monitor which is being controlled by an Honey Well Controller. The BS&W monitor is controlled by the Honey Well controller and is working perfectly well, but the Grab Sampler is not. I have done my termination base on the wiring diagram and drawing provided by client which are not detailed yet the PICO is not controlling the Grab Sampler. The Grab Sampler right now is on Time repeat mode which you can adjust through the potentiometer to Grab Sample at your desired seconds, the challenge is that there is no wiring diagram that shows how to connect the Grab Sampler to the PICO controller, and I believe we can do this through the Potentiometer of the Grab Sampler. But I do I do this? You have any information to assist me kindly send to me. My e-mail is:edmundusystemco@yahoo.co.uk