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

MIDWEST INSTRUMENT Series 120 Differential Pressure Gauge with Switch - Medium & High Operating Pressure Differential Gauges with Switch
MIDWEST INSTRUMENTMedium & High Operating Pressure Differential Gauges with Switch

MIDWEST INSTRUMENT Series 120 Differential Pressure Gauge with Switch

The MIDWEST INSTRUMENT Differential Pressure Gauge & Switch: Back is a medium and high operating pressure differential gauge with switch from the Series 120. It features a 4 1/2 in dial, 1/4 in NPT female connection…

SKU 3G-OTH-174639

Also listed as: 120AC00OAA100P · 120AC 00 O AA 100P

Brand
MIDWEST INSTRUMENT
Item
Series 120 Differential Pressure Gauge with Switch
Category
Medium & High Operating Pressure Differential Gauges with Switch
Available to Order
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineerMessage via Telegram
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

Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
Delivery
Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
Payment
Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
Ships to
Singapore

Technical Specifications

MIDWEST INSTRUMENT
Manufacturer Part Number
120AC-00-O-AA-100P
Series
120
Type
120
Dial
4 1/2 in
NPT Female
1/4 in
Sensor Type
Piston
Gauge Accuracy
±3-2-3%
Housing Material
Aluminum
Certificate of Calibration
Not Included

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

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

Product Description

The MIDWEST INSTRUMENT Differential Pressure Gauge & Switch: Back is a medium and high operating pressure differential gauge with switch from the Series 120. It features a 4 1/2 in dial, 1/4 in NPT female connection, and a piston sensor type. The gauge has an accuracy of ±3-2-3% and an aluminum housing. Note: a certificate of calibration is not included.

Frequently Asked Questions

What is the MIDWEST INSTRUMENT Series 120 differential pressure gauge with switch used for?

The MIDWEST INSTRUMENT Series 120 differential pressure gauge with switch is used to measure and control differential pressure in medium to high operating pressure systems. Common applications include filtration monitoring, pump protection, and flow measurement in industrial processes where a local readout and switch output are required.

What are the specifications of the MIDWEST INSTRUMENT 120AC-00-O-AA-100P?

The MIDWEST INSTRUMENT 120AC-00-O-AA-100P is a Series 120 differential pressure gauge with switch. It has a 4 1/2 in dial, 1/4 in NPT female back connection, piston sensor, aluminum housing, and gauge accuracy of ±3-2-3%. A certificate of calibration is not included.

Where to buy the MIDWEST INSTRUMENT 120AC-00-O-AA-100P worldwide?

You can source the MIDWEST INSTRUMENT 120AC-00-O-AA-100P differential pressure gauge with switch through 3G Electric. As a global industrial equipment distributor, 3G Electric handles full logistics, customs clearance, and delivery to worldwide destinations. Contact 3G Electric for availability and lead time.

How to install the MIDWEST INSTRUMENT Series 120 differential pressure gauge?

Install the MIDWEST INSTRUMENT Series 120 gauge by connecting the 1/4 in NPT female ports to the process lines, ensuring proper orientation for the piston sensor. Use appropriate sealant on threads and avoid overtightening. Refer to the manufacturer's manual for wiring the switch and pressure limits.

Used in

Common applications for MIDWEST INSTRUMENT
Filter monitoring in industrial water treatment — MIDWEST INSTRUMENT 522 series 3-color differential pressure indicators
Flow measurement in chemical processing — MIDWEST INSTRUMENT Series 120 piston-type differential pressure gauges
Liquid level indication in oil and gas storage tanks — MIDWEST INSTRUMENT Model 142 diaphragm-type differential pressure gauges
HVAC system filter condition monitoring — MIDWEST INSTRUMENT Series 130 differential pressure gauges with glass-reinforced plastic housing
Pump differential pressure monitoring in industrial plants — MIDWEST INSTRUMENT 522 series indicators with switch for alarm output

MIDWEST INSTRUMENT Products

3G Electric supplies MIDWEST INSTRUMENT medium & high operating pressure differential gauges with switch. 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

Compatible alternatives & equivalents

Cross-referenced by specification & description
This differential pressure gauge with switch from the Series 120 features a piston sensor and an aluminum housing. It has a 4 1/2 in dial with ±3-2-3% accuracy and a 1/4 in NPT Female back connection. Suitable for monitoring and controlling differential pressure in medium to high pressure systems, such as filtration, pump monitoring, and HVAC applications
MIDWEST INSTRUMENT
This differential pressure gauge with switch from the Series 120 features a piston sensor and an aluminum housing. It has a 4 1/2 in dial with ±3-2-3% accuracy and a 1/4 in NPT Female back connection. Suitable for monitoring and controlling differential pressure in medium to high pressure systems, such as filtration, pump monitoring, and HVAC applications
MIDWEST INSTRUMENT Differential Pressure Gauge & Switch: Back, 1/4 in NPT Female, 120, 4 1/2 in Dial (MPN 120AC-00-O-AA-20P)
MIDWEST INSTRUMENT
MIDWEST INSTRUMENT Differential Pressure Gauge & Switch: Back, 1/4 in NPT Female, 120, 4 1/2 in Dial (MPN 120AC-00-O-AA-20P)
MIDWEST INSTRUMENT Differential Pressure Gauge & Switch: Back, 1/4 in NPT Female, 120, 4 1/2 in Dial (MPN 120AC-00-O-AA-15P)
MIDWEST INSTRUMENT
MIDWEST INSTRUMENT Differential Pressure Gauge & Switch: Back, 1/4 in NPT Female, 120, 4 1/2 in Dial (MPN 120AC-00-O-AA-15P)
MIDWEST INSTRUMENT Differential Pressure Gauge & Switch: Back, 1/4 in NPT Female, 120, 4 1/2 in Dial (MPN 120AC-00-O-AA-50P)
MIDWEST INSTRUMENT
MIDWEST INSTRUMENT Differential Pressure Gauge & Switch: Back, 1/4 in NPT Female, 120, 4 1/2 in Dial (MPN 120AC-00-O-AA-50P)
MIDWEST INSTRUMENT Differential Pressure Gauge & Switch: Back, 1/4 in NPT Female, 120, 4 1/2 in Dial (MPN 120AC-00-O-AA-30P)
MIDWEST INSTRUMENT
MIDWEST INSTRUMENT Differential Pressure Gauge & Switch: Back, 1/4 in NPT Female, 120, 4 1/2 in Dial (MPN 120AC-00-O-AA-30P)
MIDWEST INSTRUMENT Differential Pressure Gauge & Switch: Back, 1/4 in NPT Female, 120, 4 1/2 in Dial (MPN 120AC-00-O-AA-5P)
MIDWEST INSTRUMENT
MIDWEST INSTRUMENT Differential Pressure Gauge & Switch: Back, 1/4 in NPT Female, 120, 4 1/2 in Dial (MPN 120AC-00-O-AA-5P)

More from MIDWEST INSTRUMENT

View all MIDWEST INSTRUMENT parts
Series 240 differential pressure gauge with switch, featuring a diaphragm sensor and 316 stainless steel housing. Accuracy is ±3-2-3% with a 1/4 in NPT female connection. Rated IP65 4X. Suitable for monitoring differential pressure in medium to high pressure systems such as filtration, pump protection, and flow measurement
MIDWEST INSTRUMENT
Series 240 differential pressure gauge with switch, featuring a diaphragm sensor and 316 stainless steel housing. Accuracy is ±3-2-3% with a 1/4 in NPT female connection. Rated IP65 4X. Suitable for monitoring differential pressure in medium to high pressure systems such as filtration, pump protection, and flow measurement
This differential pressure gauge with switch from the Series 220 uses a piston sensor and has a gauge accuracy of ±3-2-3%. The housing is made of 316 stainless steel, with 1/4 in NPT female connections and an IP65 4X rating. It is suited for monitoring and controlling differential pressure in medium to high operating pressure systems, such as filtration monitoring, pump protection, and flow measurement in industrial processes
MIDWEST INSTRUMENT
This differential pressure gauge with switch from the Series 220 uses a piston sensor and has a gauge accuracy of ±3-2-3%. The housing is made of 316 stainless steel, with 1/4 in NPT female connections and an IP65 4X rating. It is suited for monitoring and controlling differential pressure in medium to high operating pressure systems, such as filtration monitoring, pump protection, and flow measurement in industrial processes
Diaphragm-based differential pressure gauge with integrated switch for medium to high operating pressure systems. Housed in 316 stainless steel with IP65 4X rating. Accuracy ±3-2-3%. Typical applications include filtration monitoring, pump protection, and flow measurement where local indication and switch output are required
MIDWEST INSTRUMENT
Diaphragm-based differential pressure gauge with integrated switch for medium to high operating pressure systems. Housed in 316 stainless steel with IP65 4X rating. Accuracy ±3-2-3%. Typical applications include filtration monitoring, pump protection, and flow measurement where local indication and switch output are required
This differential pressure gauge with switch from the Series 120 is designed for medium to high operating pressure systems. It features a piston sensor, aluminum housing, and a 2 1/2 in dial with 1/4 in NPT female back connections. Gauge accuracy is ±3-2-3% of span. Certificate of calibration not included. Typical applications include industrial filtration, pump monitoring, and HVAC systems
MIDWEST INSTRUMENT
This differential pressure gauge with switch from the Series 120 is designed for medium to high operating pressure systems. It features a piston sensor, aluminum housing, and a 2 1/2 in dial with 1/4 in NPT female back connections. Gauge accuracy is ±3-2-3% of span. Certificate of calibration not included. Typical applications include industrial filtration, pump monitoring, and HVAC systems
Series 240 differential pressure gauge with switch, featuring a diaphragm sensor and 316 stainless steel housing. Accuracy ±3-2-3%, 1/4 in NPT female connection, IP65 4X rating. Used for monitoring and controlling differential pressure in medium to high pressure systems such as filtration and flow measurement
MIDWEST INSTRUMENT
Series 240 differential pressure gauge with switch, featuring a diaphragm sensor and 316 stainless steel housing. Accuracy ±3-2-3%, 1/4 in NPT female connection, IP65 4X rating. Used for monitoring and controlling differential pressure in medium to high pressure systems such as filtration and flow measurement
Medium and high operating pressure differential gauge with switch, featuring a piston sensor and 2 1/2 in dial. Housing is 316L stainless steel with 1/4 in NPT female connection. Gauge accuracy is ±3-2-3%. Suitable for monitoring differential pressure in industrial processes such as filtration and pump protection
MIDWEST INSTRUMENT
Medium and high operating pressure differential gauge with switch, featuring a piston sensor and 2 1/2 in dial. Housing is 316L stainless steel with 1/4 in NPT female connection. Gauge accuracy is ±3-2-3%. Suitable for monitoring differential pressure in industrial processes such as filtration and pump protection
Diaphragm-based differential pressure gauge with integrated switch for medium and high operating pressure systems. Features a 2 1/2 in dial, 1/4 in NPT female back connection, and 316 stainless steel housing. Accuracy is ±3-2-3%. Suitable for monitoring filter condition, pump protection, and flow measurement in industrial processes
MIDWEST INSTRUMENT
Diaphragm-based differential pressure gauge with integrated switch for medium and high operating pressure systems. Features a 2 1/2 in dial, 1/4 in NPT female back connection, and 316 stainless steel housing. Accuracy is ±3-2-3%. Suitable for monitoring filter condition, pump protection, and flow measurement in industrial processes
This medium and high operating pressure differential gauge with switch from the Series 240 features a diaphragm sensor and 316 stainless steel housing. It provides local pressure indication and electrical switching for monitoring and control in industrial processes such as filtration, pump protection, and flow measurement. Accuracy is ±3-2-3% with 1/4 in NPT female connections and IP65 4X enclosure rating
MIDWEST INSTRUMENT
This medium and high operating pressure differential gauge with switch from the Series 240 features a diaphragm sensor and 316 stainless steel housing. It provides local pressure indication and electrical switching for monitoring and control in industrial processes such as filtration, pump protection, and flow measurement. Accuracy is ±3-2-3% with 1/4 in NPT female connections and IP65 4X enclosure rating