Send a part number, a photo, or a whole BOM — we supply it and stand behind it. Worldwide shipping to 80+ countries.

3G Electric
RFQ CartGet a QuoteSign inSign up
Dwyer Analog Panel Meter: 999,999 Display Span - Max, 85 V AC – 265 V AC, 0.6 in Digit Ht - Max. - Process Digital Panel Meters
DwyerProcess Digital Panel Meters

Dwyer Analog Panel Meter: 999,999 Display Span - Max, 85 V AC – 265 V AC, 0.6 in Digit Ht - Max.

The Dwyer APM-121 is an analog panel meter from the APM series, featuring a 999,999 display span, red LED digits, and an accuracy of +/-0.03%. It operates on 85–265 V AC, includes USB-based programming software…

SKU 3G-OTH-154188

Brand
Dwyer
Item
Analog Panel Meter: 999,999 Display Span - Max, 85 V AC – 265 V AC, 0.6 in Digit Ht - Max.
Category
Process Digital Panel Meters
Available to Order
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineer
No account needed — your quote request goes straight to our engineers. A free account lets you track quotes and re-order faster.
Worldwide Shipping
Air & sea freight
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

Technical Specifications

Dwyer
Manufacturer Part Number
APM-121
Type
- Max, 85 V AC – 265 V AC, 0.6 in Digit Ht - Max., 4X
View Full Spec Sheet

Technical Documents

No technical documents available for this product.
Request documentation →
Not sure this is the right part? Get a recommendation.

Need installation or engineering help?

Installation, commissioning, maintenance plans, system design, and bundled product + service quotes — one team handles the full scope.
Talk to an engineer

Ask a question

Dwyer Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The Dwyer APM-121 is an analog panel meter from the APM series, featuring a 999,999 display span, red LED digits, and an accuracy of +/-0.03%. It operates on 85–265 V AC, includes USB-based programming software resident on the meter, and has a NEMA 4X rated enclosure with screw-clamp terminals. The meter offers SPDT relay output rated at 3A @ 125/250 VAC and 3A @ 30 VDC, and is designed for AC current measurement.

Frequently Asked Questions

What is the Dwyer APM-121 analog panel meter used for?

The Dwyer APM-121 is used for AC current measurement in industrial process control applications. It provides a 999,999 display span with red LED digits and is suitable for panel mounting in environments requiring a NEMA 4X rated enclosure.

What are the specifications of the Dwyer APM-121?

The Dwyer APM-121 has an accuracy of +/-0.03%, operates on 85–265 V AC, and features a red LED display with 0.6 in digit height. It includes SPDT relay output rated at 3A @ 125/250 VAC and 3A @ 30 VDC, with screw-clamp terminals and USB-based programming software resident on the meter.

Where to buy the Dwyer APM-121 worldwide?

You can source the Dwyer APM-121 through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations. Contact us for availability and lead time.

How to install the Dwyer APM-121 panel meter?

Install the Dwyer APM-121 by mounting it in a panel cutout, connecting AC power (85–265 V AC) and input signals via screw-clamp terminals. Use the resident USB-based programming software to configure display span and relay setpoints. Follow standard electrical safety practices for NEMA 4X enclosures.

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 process digital panel meters. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

You might also need

Burners & Combustion →Pumps & Compressors →Spare Parts →All Products →

Similar products

Matched by specification & description
DWYER Analog Panel Meter: 999,999 Display Span - Max, 85 V AC – 265 V AC, 0.6 in Digit Ht - Max., 4X (MPN APM-141). Key specifications — attr1042966: APM-141; attr1042969: +/-0.03%; attr1042981: Red; attr1042982: LED; attr1042990: NEMA 4X Front Panel; attr1042993: 4X; attr1043003: ANot Applicablelog Panel Meter; attr1043006: APM.
Dwyer
DWYER Analog Panel Meter: 999,999 Display Span - Max, 85 V AC – 265 V AC, 0.6 in Digit Ht - Max., 4X (MPN APM-141). Key specifications — attr1042966: APM-141; attr1042969: +/-0.03%; attr1042981: Red; attr1042982: LED; attr1042990: NEMA 4X Front Panel; attr1042993: 4X; attr1043003: ANot Applicablelog Panel Meter; attr1043006: APM.
DWYER Analog Panel Meter: 999,999 Display Span - Max, 85 V AC – 265 V AC, 0.6 in Digit Ht - Max., 4X (MPN APM-120). Key specifications — Manufacturer Part Number: APM-120; Accuracy: +/-0.03%; Digital Display Screen Color: Red; Digital Display Screen Type: LED; Includes: USB Based Programming Software is Resident on the Meter; NEMA Enclosure Rating: 4X; Product Type: ANot Applicablelog Panel Meter; Series: APM.
Dwyer
DWYER Analog Panel Meter: 999,999 Display Span - Max, 85 V AC – 265 V AC, 0.6 in Digit Ht - Max., 4X (MPN APM-120). Key specifications — Manufacturer Part Number: APM-120; Accuracy: +/-0.03%; Digital Display Screen Color: Red; Digital Display Screen Type: LED; Includes: USB Based Programming Software is Resident on the Meter; NEMA Enclosure Rating: 4X; Product Type: ANot Applicablelog Panel Meter; Series: APM.
DWYER Analog Panel Meter: 999,999 Display Span - Max, 85 V AC – 265 V AC, 0.6 in Digit Ht - Max., 4X (MPN APM-100). Key specifications — Manufacturer Part Number: APM-100; Accuracy: +/-0.03%; Digital Display Screen Color: Red; Digital Display Screen Type: LED; Includes: USB Based Programming Software is Resident on the Meter; NEMA Enclosure Rating: 4X; Product Type: ANot Applicablelog Panel Meter; Series: APM.
Dwyer
DWYER Analog Panel Meter: 999,999 Display Span - Max, 85 V AC – 265 V AC, 0.6 in Digit Ht - Max., 4X (MPN APM-100). Key specifications — Manufacturer Part Number: APM-100; Accuracy: +/-0.03%; Digital Display Screen Color: Red; Digital Display Screen Type: LED; Includes: USB Based Programming Software is Resident on the Meter; NEMA Enclosure Rating: 4X; Product Type: ANot Applicablelog Panel Meter; Series: APM.
DWYER Pulse Panel Meter: 999,999 Display Span - Max, 85 V AC – 265 V AC, 0.6 in Digit Ht - Max., USB (MPN PPM-141). Key specifications — attr1042966: PPM-141; attr1042969: +/-0.03%; attr1042981: Red; attr1042982: LED; attr1042990: NEMA 4X Front Panel; attr1042993: 4X; attr1043003: Pulse Panel Meter; attr1043006: PPM.
Dwyer
DWYER Pulse Panel Meter: 999,999 Display Span - Max, 85 V AC – 265 V AC, 0.6 in Digit Ht - Max., USB (MPN PPM-141). Key specifications — attr1042966: PPM-141; attr1042969: +/-0.03%; attr1042981: Red; attr1042982: LED; attr1042990: NEMA 4X Front Panel; attr1042993: 4X; attr1043003: Pulse Panel Meter; attr1043006: PPM.
DWYER Analog Panel Meter: 999,999 Display Span - Max, 12 V DC – 24 V DC, 0.6 in Digit Ht - Max., USB (MPN APM-200). Key specifications — Manufacturer Part Number: APM-200; Accuracy: +/-0.03%; Digital Display Screen Type: LED; Includes: NEMA 4X Front Panel; NEMA Enclosure Rating: 4X; Product Type: ANot Applicablelog Panel Meter; Series: APM; Terminal Connection Type: Screw Clamp.
Dwyer
DWYER Analog Panel Meter: 999,999 Display Span - Max, 12 V DC – 24 V DC, 0.6 in Digit Ht - Max., USB (MPN APM-200). Key specifications — Manufacturer Part Number: APM-200; Accuracy: +/-0.03%; Digital Display Screen Type: LED; Includes: NEMA 4X Front Panel; NEMA Enclosure Rating: 4X; Product Type: ANot Applicablelog Panel Meter; Series: APM; Terminal Connection Type: Screw Clamp.
DWYER Panel Meter: 999,999 Display Span - Max, 85 V AC – 265 V AC, 0.6 in Digit Ht - Max., USB, MPM (MPN MPM-100). Key specifications — attr1042966: MPM-100; attr1042969: +/-0.03%; attr1042981: Red; attr1042982: LED; attr1042990: USB Based Programming Software is Resident on the Meter; attr1042993: 4X; attr1043003: Multi Panel Meter; attr1043006: MPM.
Dwyer
DWYER Panel Meter: 999,999 Display Span - Max, 85 V AC – 265 V AC, 0.6 in Digit Ht - Max., USB, MPM (MPN MPM-100). Key specifications — attr1042966: MPM-100; attr1042969: +/-0.03%; attr1042981: Red; attr1042982: LED; attr1042990: USB Based Programming Software is Resident on the Meter; attr1042993: 4X; attr1043003: Multi Panel Meter; attr1043006: MPM.

More from Dwyer

View all Dwyer parts →
DWYER Process Indicator: -1,999 Display Span - Min, 9,999 Display Span - Max, 24 V AC – 48 V AC, Red (MPN LCI132-11). Key specifications — attr1042966: LCI132-11; attr1042969: +/-0.2% of Range + 3 Digits; +/-0.4% of Range + 4 Digits; attr1042981: Red; attr1042982: LED; attr1042993: 4X; attr1043003: Process Indicator; attr1043006: LCI132.
Dwyer
DWYER Process Indicator: -1,999 Display Span - Min, 9,999 Display Span - Max, 24 V AC – 48 V AC, Red (MPN LCI132-11). Key specifications — attr1042966: LCI132-11; attr1042969: +/-0.2% of Range + 3 Digits; +/-0.4% of Range + 4 Digits; attr1042981: Red; attr1042982: LED; attr1042993: 4X; attr1043003: Process Indicator; attr1043006: LCI132.
DWYER Process Indicator: -1,999 Display Span - Min, 9,999 Display Span - Max, 120 V AC – 240 V AC (MPN LCI132-00). Key specifications — attr1042966: LCI132-00; attr1042969: +/-0.2% of Range + 3 Digits; +/-0.4% of Range + 4 Digits; attr1042981: Red; attr1042982: LED; attr1042993: 4X; attr1043003: Process Indicator; attr1043006: LCI132.
Dwyer
DWYER Process Indicator: -1,999 Display Span - Min, 9,999 Display Span - Max, 120 V AC – 240 V AC (MPN LCI132-00). Key specifications — attr1042966: LCI132-00; attr1042969: +/-0.2% of Range + 3 Digits; +/-0.4% of Range + 4 Digits; attr1042981: Red; attr1042982: LED; attr1042993: 4X; attr1043003: Process Indicator; attr1043006: LCI132.
DWYER Panel Meter: 999,999 Display Span - Max, 85 V AC – 265 V AC, 0.6 in Digit Ht - Max., USB, MPM (MPN MPM-101). Key specifications — attr1042966: MPM-101; attr1042969: +/-0.03%; attr1042981: Red; attr1042982: LED; attr1042990: NEMA 4X Front Panel; attr1042993: 4X; attr1043003: Multi Panel Meter; attr1043006: MPM.
Dwyer
DWYER Panel Meter: 999,999 Display Span - Max, 85 V AC – 265 V AC, 0.6 in Digit Ht - Max., USB, MPM (MPN MPM-101). Key specifications — attr1042966: MPM-101; attr1042969: +/-0.03%; attr1042981: Red; attr1042982: LED; attr1042990: NEMA 4X Front Panel; attr1042993: 4X; attr1043003: Multi Panel Meter; attr1043006: MPM.
DWYER Digital Panel Meter: -1,999 Display Span - Min, 1,999 Display Span - Max, 12 V DC – 24 V DC, 4 (MPN DPMP-503). Key specifications — attr1042966: DPMP-503; attr1042969: +/-0.05% Full Scale +1 count; attr1042981: Red; attr1042982: LCD; attr1042993: 4; attr1043003: Digital Panel Meter; attr1043006: DPMP; attr1043012: Screw Clamp.
Dwyer
DWYER Digital Panel Meter: -1,999 Display Span - Min, 1,999 Display Span - Max, 12 V DC – 24 V DC, 4 (MPN DPMP-503). Key specifications — attr1042966: DPMP-503; attr1042969: +/-0.05% Full Scale +1 count; attr1042981: Red; attr1042982: LCD; attr1042993: 4; attr1043003: Digital Panel Meter; attr1043006: DPMP; attr1043012: Screw Clamp.
DWYER Interface Panel Meter: 5 V DC – 30 V DC, Graph/Touchscreen, USB, PWM /OPEN COLLECTRO, SPPM2-43. Key specifications — attr1042966: SPPM2-43; attr1042969: +/-0.05%; attr1042982: TFT LCD; attr1042993: 4X; attr1043003: Interface Panel Meter; attr1043006: SPPM2; attr1043012: Pin; attr1057883: Graph.
Dwyer
DWYER Interface Panel Meter: 5 V DC – 30 V DC, Graph/Touchscreen, USB, PWM /OPEN COLLECTRO, SPPM2-43. Key specifications — attr1042966: SPPM2-43; attr1042969: +/-0.05%; attr1042982: TFT LCD; attr1042993: 4X; attr1043003: Interface Panel Meter; attr1043006: SPPM2; attr1043012: Pin; attr1057883: Graph.
DWYER Digital Panel Meter: -1,999 Display Span - Min, 1,999 Display Span - Max, 12 V DC – 24 V DC, 4 (MPN DPMA-502). Key specifications — attr1042966: DPMA-502; attr1042969: +/-0.05% Full Scale +1 count; attr1042981: Red; attr1042982: LCD; attr1042993: 4; attr1043003: Digital Panel Meter; attr1043006: DPMA; attr1043012: Screw Clamp.
Dwyer
DWYER Digital Panel Meter: -1,999 Display Span - Min, 1,999 Display Span - Max, 12 V DC – 24 V DC, 4 (MPN DPMA-502). Key specifications — attr1042966: DPMA-502; attr1042969: +/-0.05% Full Scale +1 count; attr1042981: Red; attr1042982: LCD; attr1042993: 4; attr1043003: Digital Panel Meter; attr1043006: DPMA; attr1043012: Screw Clamp.
DWYER Panel Meter: 999,999 Display Span - Max, 85 V AC – 265 V AC, 0.6 in Digit Ht - Max., USB, MPM (MPN MPM-121). Key specifications — attr1042966: MPM-121; attr1042969: +/-0.03%; attr1042981: Red; attr1042982: LED; attr1042990: NEMA 4X Front Panel; attr1042993: 4X; attr1043003: Multi Panel Meter; attr1043006: MPM.
Dwyer
DWYER Panel Meter: 999,999 Display Span - Max, 85 V AC – 265 V AC, 0.6 in Digit Ht - Max., USB, MPM (MPN MPM-121). Key specifications — attr1042966: MPM-121; attr1042969: +/-0.03%; attr1042981: Red; attr1042982: LED; attr1042990: NEMA 4X Front Panel; attr1042993: 4X; attr1043003: Multi Panel Meter; attr1043006: MPM.
DWYER Panel Meter: 999,999 Display Span - Max, 85 V AC – 265 V AC, 0.6 in Digit Ht - Max., USB, MPM (MPN MPM-141). Key specifications — attr1042966: MPM-141; attr1042969: +/-0.03%; attr1042981: Red; attr1042982: LED; attr1042990: USB Based Programming Software is Resident on the Meter; attr1042993: 4X; attr1043003: Multi Panel Meter; attr1043006: MPM.
Dwyer
DWYER Panel Meter: 999,999 Display Span - Max, 85 V AC – 265 V AC, 0.6 in Digit Ht - Max., USB, MPM (MPN MPM-141). Key specifications — attr1042966: MPM-141; attr1042969: +/-0.03%; attr1042981: Red; attr1042982: LED; attr1042990: USB Based Programming Software is Resident on the Meter; attr1042993: 4X; attr1043003: Multi Panel Meter; attr1043006: MPM.