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Dwyer Pulse Panel Meter: 999,999 Display Span - Max, 12 V DC – 24 V DC, 0.6 in Digit Ht - Max. - Frequency Digital Panel Meters
DwyerFrequency Digital Panel Meters

Dwyer Pulse Panel Meter: 999,999 Display Span - Max, 12 V DC – 24 V DC, 0.6 in Digit Ht - Max.

The DWYER PPM-221 Pulse Panel Meter is a frequency digital panel meter from the PPM series, featuring a red LED display with a maximum span of 999,999 and 0.6-inch digit height. It offers +/-0.03% accuracy, operates…

SKU 3G-OTH-28842

Brand
Dwyer
Item
Pulse Panel Meter: 999,999 Display Span - Max, 12 V DC – 24 V DC, 0.6 in Digit Ht - Max.
Category
Frequency Digital Panel Meters
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Technical Specifications

Dwyer
Manufacturer Part Number
PPM-221
Series
PPM
Type
- Max, 12 V DC – 24 V DC, 0.6 in Digit Ht - Max., USB
Accuracy
+/-0.03%
Includes
USB Based Programming Software is Resident on the Meter
Interface
USB
Input Type
Frequency
Product Type
Pulse Panel Meter
Relay Contact Form
SPST
NEMA Enclosure Rating
4X
Terminal Connection Type
Screw Clamp
Digital Display Screen Type
LED
Digital Display Screen Color
Red
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Dwyer Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The DWYER PPM-221 Pulse Panel Meter is a frequency digital panel meter from the PPM series, featuring a red LED display with a maximum span of 999,999 and 0.6-inch digit height. It offers +/-0.03% accuracy, operates on 12-24 VDC, and includes USB-based programming software resident on the meter. The unit has a NEMA 4X enclosure rating, SPST relay contact form, and screw clamp terminal connections.

Frequently Asked Questions

What is the Dwyer PPM-221 pulse panel meter used for?

The Dwyer PPM-221 pulse panel meter measures and displays frequency or pulse signals in industrial automation, process control, and monitoring systems. It is commonly used in panel-mounted applications requiring a NEMA 4X rated enclosure for washdown or dusty environments.

What are the specifications of the Dwyer PPM-221?

The Dwyer PPM-221 offers +/-0.03% accuracy, a red LED display with 0.6-inch digit height, and a maximum span of 999,999. It operates on 12-24 VDC, includes USB-based programming software resident on the meter, and has a NEMA 4X enclosure rating with SPST relay and screw clamp terminals.

Where to buy the Dwyer PPM-221 worldwide?

3G Electric supplies the Dwyer PPM-221 pulse panel meter worldwide. As a global industrial equipment distributor, we handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time.

How to install the Dwyer PPM-221 pulse panel meter?

Mount the Dwyer PPM-221 in a panel cutout per the manual, connect power (12-24 VDC) and input signals to the screw clamp terminals, and configure parameters via the resident USB-based software. Ensure the NEMA 4X seal is intact for environmental protection.

Used in

Common applications for Dwyer
Combustion air-filter monitoring — Magnehelic Series 2000 on burner air-intake filter banks
Clean-room and pharmaceutical pressurisation — Magnehelic / Capsuhelic differential-pressure gauges
HVAC fan-discharge static pressure — Mark II inclined-vertical manometers on AHU test points
Filter-blockage alarms — Photohelic Series 3000 combined gauge/switch on air-handling units
BMS-integrated pressure monitoring — Digihelic DH3 with 4–20 mA output for building management

Dwyer Products

3G Electric supplies Dwyer frequency digital panel meters. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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