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MIDWEST INSTRUMENT Series 140 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 140 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 140. It features a 2 1/2 in dial, 1/4 in NPT Female connection…

SKU 3G-OTH-174583

Also listed as: 140AA00OAA50P · 140 AA 00 O AA 50P · 140-AA-00-O-AA-50P

Brand
MIDWEST INSTRUMENT
Item
Series 140 Differential Pressure Gauge with Switch
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
140-AA-00-O(AA)-50P
Series
140
Type
140, 2 1/2 in Dial (MPN 140-AA-00-O(AA)-50P)
NPT Female
1/4 in
Sensor Type
Diaphragm
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 140. It features a 2 1/2 in dial, 1/4 in NPT Female connection, a diaphragm sensor type, aluminum housing, and a gauge accuracy of ±3-2-3%. The manufacturer part number is 140-AA-00-O(AA)-50P, and a certificate of calibration is not included.

Frequently Asked Questions

What is the MIDWEST INSTRUMENT Series 140 differential pressure gauge with switch used for?

The MIDWEST INSTRUMENT Series 140 differential pressure gauge with switch is used to measure and control differential pressure in medium and high operating pressure systems. Common applications include monitoring filter condition, flow measurement, and pump protection in industrial HVAC, water treatment, and process automation.

What are the specifications of the MIDWEST INSTRUMENT 140-AA-00-O(AA)-50P?

The MIDWEST INSTRUMENT 140-AA-00-O(AA)-50P is a Series 140 differential pressure gauge with switch. It has a 2 1/2 in dial, 1/4 in NPT Female back connection, diaphragm sensor, aluminum housing, and ±3-2-3% gauge accuracy. Certificate of calibration is not included.

Where to buy the MIDWEST INSTRUMENT 140 differential pressure gauge with switch worldwide?

You can source the MIDWEST INSTRUMENT 140 differential pressure gauge with switch 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 a MIDWEST INSTRUMENT Series 140 differential pressure gauge with switch?

Install the MIDWEST INSTRUMENT Series 140 gauge with switch by mounting it vertically with the 1/4 in NPT Female back connection. Use appropriate thread sealant, avoid over-torquing, and ensure impulse lines are clean. Follow standard piping practices for differential pressure instruments to prevent diaphragm damage.

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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Compatible alternatives & equivalents

Cross-referenced by specification & description
This differential pressure gauge with switch from the Series 140 features a 2 1/2 in dial and a diaphragm sensor. It has a 1/4 in NPT female connection and an aluminum housing. Gauge accuracy is ±3-2-3%. Typical applications include monitoring filter condition, pump performance, and flow in HVAC and industrial process systems
MIDWEST INSTRUMENT
This differential pressure gauge with switch from the Series 140 features a 2 1/2 in dial and a diaphragm sensor. It has a 1/4 in NPT female connection and an aluminum housing. Gauge accuracy is ±3-2-3%. Typical applications include monitoring filter condition, pump performance, and flow in HVAC and industrial process systems
MIDWEST INSTRUMENT Differential Pressure Gauge & Switch: Back, 1/4 in NPT Female, 140, 2 1/2 in Dial (MPN 140-AA-00-O(AA)-30P)
MIDWEST INSTRUMENT
MIDWEST INSTRUMENT Differential Pressure Gauge & Switch: Back, 1/4 in NPT Female, 140, 2 1/2 in Dial (MPN 140-AA-00-O(AA)-30P)
This differential pressure gauge with switch from the Series 140 features a diaphragm sensor and a 2 1/2 in dial. It has a 1/4 in NPT Female back connection and a 316 stainless steel housing. Gauge accuracy is ±3-2-3%. Suitable for monitoring differential pressure in medium to high operating pressure systems, such as filtration and pump applications
MIDWEST INSTRUMENT
This differential pressure gauge with switch from the Series 140 features a diaphragm sensor and a 2 1/2 in dial. It has a 1/4 in NPT Female back connection and a 316 stainless steel housing. Gauge accuracy is ±3-2-3%. Suitable for monitoring differential pressure in medium to high operating pressure systems, such as filtration and pump applications
MIDWEST INSTRUMENT Differential Pressure Gauge & Switch: Back, 1/4 in NPT Female, 140, 2 1/2 in Dial (MPN 140-SA-00-O(AA)-100P)
MIDWEST INSTRUMENT
MIDWEST INSTRUMENT Differential Pressure Gauge & Switch: Back, 1/4 in NPT Female, 140, 2 1/2 in Dial (MPN 140-SA-00-O(AA)-100P)
MIDWEST INSTRUMENT Differential Pressure Gauge & Switch: Back, 1/4 in NPT Female, 142, 2 1/2 in Dial (MPN 142-AA-00-O(AA)-20P)
MIDWEST INSTRUMENT
MIDWEST INSTRUMENT Differential Pressure Gauge & Switch: Back, 1/4 in NPT Female, 142, 2 1/2 in Dial (MPN 142-AA-00-O(AA)-20P)
MIDWEST INSTRUMENT Differential Pressure Gauge & Switch: Back, 1/4 in NPT Female, 142, 2 1/2 in Dial (MPN 142-AA-00-O(AA)-50H)
MIDWEST INSTRUMENT
MIDWEST INSTRUMENT Differential Pressure Gauge & Switch: Back, 1/4 in NPT Female, 142, 2 1/2 in Dial (MPN 142-AA-00-O(AA)-50H)

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This differential pressure gauge with switch from the Series 220 uses a piston sensor and a 316 stainless steel housing. It has 1/4 in NPT female connections, an IP65 4X enclosure rating, and a gauge accuracy of ±3-2-3%. Typical applications include monitoring differential pressure in medium to high pressure systems for filtration, pump protection, and flow measurement
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This medium and high operating pressure differential gauge integrates a switch for monitoring and control. It features a 2 1/2 in dial, 1/4 in NPT female connection, diaphragm sensor, and 316 stainless steel housing. Accuracy is ±3-2-3%. Suitable for industrial filtration, pump monitoring, and process control applications
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This differential pressure gauge with switch from the Series 220 is designed for medium to high operating pressure applications. It features a piston sensor type, 316 stainless steel housing, 1/4 in NPT female connections, and an IP65 4X rating. Gauge accuracy is ±3-2-3%. Certificate of calibration is not included
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This differential pressure gauge with switch from the Series 220 is designed for medium to high operating pressure applications. It features a piston sensor type, 316 stainless steel housing, 1/4 in NPT female connections, and an IP65 4X rating. Gauge accuracy is ±3-2-3%. Certificate of calibration is not included
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