Precision Digital offers accessories that expand the usefulness of your digital panel meters and controllers. You can enhance your existing meters to meet new process challenges with our upgrade cards and DIN rail mountable expansion modules. Our panel and pipe mounting kits allow you to put your meter exactly where it needs to go. Serial communication adapters allow you to program many of our digital meters and controllers from a desktop PC and integrate them into a digital Modbus® network.
1. PD420-461 4-20 mA Set Point Generator and Valve Positioner
The PD420/21 set point generator and the PD460/61 valve positioner provide a convenient way to generate a 4-20 mA signal that can be used to control another device.
Both feature a backlit LCD. The PD420/21 set point generator can be programmed to display 0-100%, 4-20 mA or 3-21 mA and output either 4-20 mA or 3-21 mA. The PD460/61 valve positioner is programmed to display a value of 0-100% relating to the 4-20 mA output. A built-in dial is provided to vary the displayed / output value. The dial may be programmed for coarse or fine adjustment.
The PD9502 is a low-cost, compact, simple to use 4-20 mA or 0-10 VDC signal generator. It can easily be set for 0-20 mA, 4-20 mA, 0-10 V or 2-10 V ranges. Signal adjustment is made with a one-turn knob. A 15-27 VDC wall plug is provided with the instrument.
Data Sheet 
