MIDWEST INSTRUMENT Differential Pressure Gauge & Switch: Back, 1/4 in NPT Female, 140
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
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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.
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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.















