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Dwyer Ppm-121, Series Ppm Pulse Input Rate/Totalizer

4.4 stars, based on 11 reviews

USD 522.00

In stock

Dwyer, PPM-121, PPM-121 Series PPM Dual-Line Pulse Input Rate/Totalizer, Power Requirements 85-265 VAC, 2 Relays, Output Signal - 4-20 mA 1/8 DIN, Dual-Line 6-Digit Display, Flow Rate and Totalizer The Series PPM has a unique, rugged, NEMA 4X front panel design that makes it nearly impenetrable in typical applications



Choose from RS-232, RS-422/485 serial communication options or any available expansion modules, accessories, and enclosures

Features Three levels of password protection Gate function for rate display of slow pulse rates Rate displayed as units per second, minute, hour, or day K-factor calibration or scale with up to 32-point linearization Total, grand total or non-re-settable grand total Two or four relays amp isolated 4 to 20 mA output options External 4-relay amp digital I/O expansion modules RS-232, RS-422/485 serial communication options

It features up to eight visual alarm set points to trigger certain events and three function keys which can be programmed to provide direct menu access

Offering programmable delay time, this meter prevents recognition of false maximum or minimum reading which may be caused by the start-up or unusual process events

The PPM displays flow rate and total simultaneously, with a programmable relay and 4 to 20 mA option for flow rate or flow total

The PPM is a 1/8 DIN digital panel meter specifically designed for displaying flow rate and total from a pulsed input provided by open collector, NPN, PNP, TTL, switch contact, sine wave, or square wave

The PPM provides three security passwords that restrict modification of programmed settings

The intensity of the display can be adjusted allowing this meter to be utilized in dark rooms as well as outdoors, due to its sunlight readable display

The weatherproof, UV resistant, large, dual line display allows for more information, making it easier to read and simpler to program

This unit has the ability to obtain non-linear input signals and linearize them with a general purpose 32-point linearizer

With up to four relays available, the PPM features latching, non-latching, sampling, pump alteration control, and a fail-safe action


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