Description –

The Pulse Duration Transmitter converts a 4/20 mADC signal to a periodic proportional modulated pulse width contact closure that is connected to a dry wire pair. A Pulse Duration Receiver is connected to the other end of the dry wire pair.

It detects the modulated contact closure and converts it back to a 4/20mADC signal.

The 4/20 mADC signal may be connected to a local display, chart recorder or PLC.

The 4/20 mADC is also connected to the Controller which compares the 4/20mADC to an adjustable on and off setpoint. The Controller contact closure output can be used to operate a pump to maintain the level in the Tank or operate a level alarm.

Specifying/Ordering –

Product Application Number (PAN)

DLS4

Specifications –

            E – NEMA 1 Rated Enclosures

P – Power – 115 VAC, 60 Hz,

I – Input – 4/20 mADC, Z = 50 Ohms

M – PDM Format – 3/12 Sec, 15 Sec Period, up to 3000 Ohms Line Resistance

O1 – Output 1 – 4/20 mADC, Drive = 550 Ohms

O2 – Output 2 – Pump Up

Use the following table to specify other options.

Example – DLS4–EA-PB-IA-MA-O1B-O2A

Resulting Specifications –

            E – NEMA 4 Rated Enclosures

P – Power – 24 VDC

I1 – Input – 1/5VDC

M – PDM Format – 0/13.33 Sec, 15 Sec Period, up to 3000 Ohms Line Resistance

O1 – Output – 0/10 VDC

                        O2 – Pump Down