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MIDWEST INSTRUMENT 120AA-00-O-AA-100P Medium & High Operating - Medium & High Operating Pressure Differential Gauges with Switch
MIDWEST INSTRUMENTMedium & High Operating Pressure Differential Gauges with Switch

MIDWEST INSTRUMENT 120AA-00-O-AA-100P Medium & High Operating

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 piston sensor type, a 2 1/2 in dial, and a…

SKU 3G-OTH-174598

Also listed as: 120AA00OAA100P · 120AA 00 O AA 100P

Brand
MIDWEST INSTRUMENT
Item
120AA-00-O-AA-100P Medium & High Operating
Category
Medium & High Operating Pressure Differential Gauges with Switch
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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
120AA-00-O-AA-100P
Series
120
Type
120
Dial
2 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

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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 piston sensor type, a 2 1/2 in dial, and a 1/4 in NPT female connection. The gauge has an accuracy of ±3-2-3% and is housed in an aluminum body. Note that a certificate of calibration is not included.

Frequently Asked Questions

What is the MIDWEST INSTRUMENT 120AA-00-O-AA-100P differential pressure gauge with switch used for?

This gauge with switch is used to measure and control differential pressure in medium to high operating pressure systems. Common applications include monitoring filter condition, pump performance, and flow in industrial hydraulic, pneumatic, and process lines where a local readout and switch output are needed.

What are the specifications of the MIDWEST INSTRUMENT Series 120 differential pressure gauge with switch?

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

Where to buy the MIDWEST INSTRUMENT 120AA-00-O-AA-100P differential pressure gauge with switch worldwide?

3G Electric supplies the MIDWEST INSTRUMENT 120AA-00-O-AA-100P differential pressure gauge with switch 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 a MIDWEST INSTRUMENT Series 120 differential pressure gauge with switch?

Install the gauge using the 1/4 in NPT female connection with compatible fittings. Mount it in a location free from excessive vibration and within the rated pressure range. Connect the high-pressure port to the upstream side and low-pressure port downstream. Follow standard piping practices and verify switch wiring per the manufacturer's manual.

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.

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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
MIDWEST INSTRUMENT Differential Pressure Gauge & Switch: Back, 1/4 in NPT Female, 120, 2 1/2 in Dial (MPN 120AA-00-O-AA-75P)
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MIDWEST INSTRUMENT Differential Pressure Gauge & Switch: Back, 1/4 in NPT Female, 120, 2 1/2 in Dial (MPN 120AA-00-O-AA-75P)
MIDWEST INSTRUMENT Differential Pressure Gauge & Switch: Back, 1/4 in NPT Female, 120, 2 1/2 in Dial (MPN 120AA-00-O-AA-50P)
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MIDWEST INSTRUMENT Differential Pressure Gauge & Switch: Back, 1/4 in NPT Female, 120, 2 1/2 in Dial (MPN 120AA-00-O-AA-50P)
This differential pressure gauge with switch features a piston sensor and aluminum housing. It has a 2 1/2 in dial with 1/4 in NPT female back connections and an accuracy of ±3-2-3%. Suitable for monitoring filter condition, pump performance, and flow in hydraulic, pneumatic, and process lines
MIDWEST INSTRUMENT
This differential pressure gauge with switch features a piston sensor and aluminum housing. It has a 2 1/2 in dial with 1/4 in NPT female back connections and an accuracy of ±3-2-3%. Suitable for monitoring filter condition, pump performance, and flow in hydraulic, pneumatic, and process lines
This differential pressure gauge with switch from the Series 120 features a 2-1/2 in dial, 1/4 in NPT female back connection, and a piston sensor. The aluminum housing provides structural support, and the gauge accuracy is ±3-2-3%. Suitable for monitoring and controlling differential pressure in medium to high operating pressure systems such as industrial filtration and pump monitoring
MIDWEST INSTRUMENT
This differential pressure gauge with switch from the Series 120 features a 2-1/2 in dial, 1/4 in NPT female back connection, and a piston sensor. The aluminum housing provides structural support, and the gauge accuracy is ±3-2-3%. Suitable for monitoring and controlling differential pressure in medium to high operating pressure systems such as industrial filtration and pump monitoring
This differential pressure gauge with integrated switch is designed for medium to high operating pressure systems. It features a 2 1/2 in dial, 1/4 in NPT female back connections, and a piston sensor. The aluminum housing and ±3-2-3% accuracy support applications such as industrial filtration, pump monitoring, and HVAC control
MIDWEST INSTRUMENT
This differential pressure gauge with integrated switch is designed for medium to high operating pressure systems. It features a 2 1/2 in dial, 1/4 in NPT female back connections, and a piston sensor. The aluminum housing and ±3-2-3% accuracy support applications such as industrial filtration, pump monitoring, and HVAC control

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This differential pressure gauge with switch from the Series 140 features a 2 1/2 in dial, diaphragm sensor, and aluminum housing. It has a 1/4 in NPT female back connection and an accuracy of ±3-2-3%. The integrated switch allows for alarm or control functions in medium to high operating pressure systems, commonly used to monitor filter clogging, flow variations, or pressure drops across equipment
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Series 120 differential pressure gauge with switch, featuring a 2 1/2 in dial, 1/4 in NPT female connection, and a piston sensor. Housed in 316 stainless steel with ±3-2-3% accuracy. Suitable for monitoring differential pressure in medium to high operating pressure systems, such as filtration and flow applications
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This differential pressure gauge with switch from the Series 120 features a piston sensor and aluminum housing. It has a 2 1/2 in dial with 1/4 in NPT Female back connection and an accuracy of ±3-2-3%. Suitable for monitoring and controlling differential pressure in medium to high operating pressure systems, such as filtration and pump protection
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This differential pressure gauge with switch from the Series 120 features a piston sensor and aluminum housing. It has a 2 1/2 in dial with 1/4 in NPT Female back connection and an accuracy of ±3-2-3%. Suitable for monitoring and controlling differential pressure in medium to high operating pressure systems, such as filtration and pump protection
This Series 240 differential pressure gauge with switch features a diaphragm sensor and 316 stainless steel housing. It has a 1/4 in NPT female connection, IP65 4X rating, and ±3-2-3% accuracy. Used for monitoring and controlling differential pressure in medium to high pressure systems
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Medium and high operating pressure differential gauge with switch from the Series 120. Features a piston sensor, 2 1/2 in dial, 1/4 in NPT female connection, and 316 stainless steel housing. Accuracy is ±3-2-3%. Suitable for industrial filtration, pump monitoring, and hydraulic systems
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Medium and high operating pressure differential gauge with switch from the Series 120. Features a piston sensor, 2 1/2 in dial, 1/4 in NPT female connection, and 316 stainless steel housing. Accuracy is ±3-2-3%. Suitable for industrial filtration, pump monitoring, and hydraulic systems
This differential pressure gauge with switch from the Series 120 is designed for medium and high operating pressure applications. It features a piston sensor, a 2 1/2 in dial, and a 1/4 in NPT Female connection. The aluminum housing provides corrosion resistance, and the gauge accuracy is ±3-2-3%. Typical uses include monitoring filter condition, flow measurement, and pump protection in industrial processes and fluid handling systems
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This differential pressure gauge with switch from the Series 120 is designed for medium and high operating pressure applications. It features a piston sensor, a 2 1/2 in dial, and a 1/4 in NPT Female connection. The aluminum housing provides corrosion resistance, and the gauge accuracy is ±3-2-3%. Typical uses include monitoring filter condition, flow measurement, and pump protection in industrial processes and fluid handling systems