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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 diaphragm sensor, a 2 1/2 in dial, and a 1/4…

SKU 3G-OTH-174578

Also listed as: 140SA00OAA30P · 140 SA 00 O AA 30P · 140-SA-00-O-AA-30P

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-SA-00-O(AA)-30P
Series
140
Type
140, 2 1/2 in Dial (MPN 140-SA-00-O(AA)-30P)
NPT Female
1/4 in
Sensor Type
Diaphragm
Gauge Accuracy
±3-2-3%
Housing Material
316 Stainless Steel
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 diaphragm sensor, a 2 1/2 in dial, and a 1/4 in NPT Female connection, with a 316 Stainless Steel housing. The gauge accuracy is ±3-2-3%, and a certificate of calibration is not included.

Frequently Asked Questions

What is the MIDWEST INSTRUMENT 140-SA-00-O(AA)-30P differential pressure gauge and switch used for?

This instrument measures and switches on differential pressure in medium to high operating pressure systems. It is commonly used in industrial filtration, pump monitoring, and flow measurement applications where a diaphragm sensor and 316 stainless steel housing provide corrosion resistance.

What are the specifications of the MIDWEST INSTRUMENT Series 140 differential pressure gauge with switch?

The Series 140 model 140-SA-00-O(AA)-30P has a diaphragm sensor, 2 1/2 in dial, 1/4 in NPT Female back connection, and 316 stainless steel housing. Gauge accuracy is ±3-2-3%. A certificate of calibration is not included. It is a medium and high operating pressure differential gauge with switch.

Where to buy the MIDWEST INSTRUMENT 140-SA-00-O(AA)-30P differential pressure gauge and switch worldwide?

3G Electric supplies the MIDWEST INSTRUMENT 140-SA-00-O(AA)-30P differential pressure gauge and switch worldwide. We handle full logistics, customs clearance, and delivery to your site. Contact us for availability and lead time.

How to install a MIDWEST INSTRUMENT Series 140 differential pressure gauge with switch?

Mount the gauge using the 1/4 in NPT Female back connection, ensuring the diaphragm sensor is not over-pressured beyond rated limits. Connect impulse lines to the high and low pressure ports. Wire the switch per the manufacturer's diagram. Verify zero and span before commissioning.

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 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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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)
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This differential pressure gauge with switch from the Series 140 features a 2 1/2 in dial and a 1/4 in NPT female connection. It uses a diaphragm sensor and has an aluminum housing with an accuracy of ±3-2-3%. Suitable for monitoring filter condition, flow measurement, and pump protection in medium to high pressure systems
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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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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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