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MIDWEST INSTRUMENT 3-Color Differential Pressure Indicator: 300 psig Max. Static Pressure - Differential Pressure Indicators
MIDWEST INSTRUMENTDifferential Pressure Indicators

MIDWEST INSTRUMENT 3-Color Differential Pressure Indicator: 300 psig Max. Static Pressure

The MIDWEST INSTRUMENT 3-Color Differential Pressure Indicator (MPN 555A-30.0) is a differential pressure indicator with a maximum static pressure of 300 psig. It features an accuracy of ±5% (0-3.5 psid to 0-43…

SKU 3G-OTH-174429

Brand
MIDWEST INSTRUMENT
Item
3-Color Differential Pressure Indicator: 300 psig Max. Static Pressure
Category
Differential Pressure Indicators
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Technical Specifications

MIDWEST INSTRUMENT
Manufacturer Part Number
555A-30.0
Type
Static Pressure, 555A
Accuracy
±5% (0-3.5 psid to 0-43 psid)
Sensor Material
Buna-N
Housing Material
Glass-Filled Nylon
Transition Points
0 psid to 13 psid (Green) / 13 psid to 20 psid (Yellow) / 20 psid to 30 psid (Red)
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MIDWEST INSTRUMENT Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The MIDWEST INSTRUMENT 3-Color Differential Pressure Indicator (MPN 555A-30.0) is a differential pressure indicator with a maximum static pressure of 300 psig. It features an accuracy of ±5% (0-3.5 psid to 0-43 psid), a Buna-N sensor, and a glass-filled nylon housing. The indicator uses three color-coded transition points: green from 0 psid to 13 psid, yellow from 13 psid to 20 psid, and red from 20 psid to 30 psid.

Supplied to the Philippines — compatible with 60 Hz installations. DHL Express delivery to Manila, Quezon City, Cebu, customs and duties handled door-to-door.

Frequently Asked Questions

What is the MIDWEST INSTRUMENT 3-Color Differential Pressure Indicator used for?

This indicator is used to monitor differential pressure in industrial fluid systems, such as filtration, pumping, and HVAC applications. The three-color display (green, yellow, red) provides an immediate visual status of pressure conditions, helping operators quickly identify normal, cautionary, or critical states.

What are the specifications of the MIDWEST INSTRUMENT 555A-30.0?

The MIDWEST INSTRUMENT 555A-30.0 has a maximum static pressure of 300 psig, accuracy of ±5% (0-3.5 psid to 0-43 psid), a Buna-N sensor, and a glass-filled nylon housing. Transition points are 0 psid to 13 psid (green), 13 psid to 20 psid (yellow), and 20 psid to 30 psid (red).

Where to buy the MIDWEST INSTRUMENT 555A-30.0 worldwide?

You can source the MIDWEST INSTRUMENT 555A-30.0 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 select the correct MIDWEST INSTRUMENT differential pressure indicator?

Select based on your system's maximum static pressure (300 psig for this model), required accuracy (±5%), and desired transition points. Ensure the Buna-N sensor is compatible with your fluid media. For applications needing visual status at a glance, the three-color indicator simplifies monitoring.

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 differential pressure indicators. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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MIDWEST INSTRUMENT 3-Color Differential Pressure Indicator: 1,000 psig Max. Static Pressure, 522 (MPN 522S-015V). Key specifications — Brand: MIDWEST INSTRUMENT; Accuracy: ±5% of Full Scale; Sensor Material: Viton; Housing Material: Stainless Steel; Transition Points: 0 psid to 7.5 psid (Green) / 7.5 psid to 11 psid (Yellow) / 11 psid to 15 psid (Red).
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MIDWEST INSTRUMENT 3-Color Differential Pressure Indicator: 1,000 psig Max. Static Pressure, 522 (MPN 522S-015V). Key specifications — Brand: MIDWEST INSTRUMENT; Accuracy: ±5% of Full Scale; Sensor Material: Viton; Housing Material: Stainless Steel; Transition Points: 0 psid to 7.5 psid (Green) / 7.5 psid to 11 psid (Yellow) / 11 psid to 15 psid (Red).
MIDWEST INSTRUMENT 3-Color Differential Pressure Indicator: 1,000 psig Max. Static Pressure, 522 (MPN 522S-025V). Key specifications — Brand: MIDWEST INSTRUMENT; Accuracy: ±5% of Full Scale; Sensor Material: Viton; Housing Material: Stainless Steel; Transition Points: 0 psid to 11 psid (Green) / 11 psid to 18.5 psid (Yellow) / 18.5 psid to 25 psid (Red).
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MIDWEST INSTRUMENT 3-Color Differential Pressure Indicator: 1,000 psig Max. Static Pressure, 522 (MPN 522S-025V). Key specifications — Brand: MIDWEST INSTRUMENT; Accuracy: ±5% of Full Scale; Sensor Material: Viton; Housing Material: Stainless Steel; Transition Points: 0 psid to 11 psid (Green) / 11 psid to 18.5 psid (Yellow) / 18.5 psid to 25 psid (Red).
MIDWEST INSTRUMENT 3-Color Differential Pressure Indicator: 1,000 psig Max. Static Pressure, 522 (MPN 522S-030V). Key specifications — Brand: MIDWEST INSTRUMENT; Accuracy: ±5% of Full Scale; Sensor Material: Viton; Housing Material: Stainless Steel; Transition Points: 0 psid to 13 psid (Green) / 13 psid to 20 psid (Yellow) / 20 psid to 30 psid (Red).
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MIDWEST INSTRUMENT 3-Color Differential Pressure Indicator: 1,000 psig Max. Static Pressure, 522 (MPN 522S-030V). Key specifications — Brand: MIDWEST INSTRUMENT; Accuracy: ±5% of Full Scale; Sensor Material: Viton; Housing Material: Stainless Steel; Transition Points: 0 psid to 13 psid (Green) / 13 psid to 20 psid (Yellow) / 20 psid to 30 psid (Red).
MIDWEST INSTRUMENT 3-Color Differential Pressure Indicator: 1,000 psig Max. Static Pressure, 522 (MPN 522A-030V). Key specifications — Brand: MIDWEST INSTRUMENT; Accuracy: ±5% of Full Scale; Sensor Material: Viton; Housing Material: Aluminum; Transition Points: 0 psid to 13 psid (Green) / 13 psid to 20 psid (Yellow) / 20 psid to 30 psid (Red).
MIDWEST INSTRUMENT
MIDWEST INSTRUMENT 3-Color Differential Pressure Indicator: 1,000 psig Max. Static Pressure, 522 (MPN 522A-030V). Key specifications — Brand: MIDWEST INSTRUMENT; Accuracy: ±5% of Full Scale; Sensor Material: Viton; Housing Material: Aluminum; Transition Points: 0 psid to 13 psid (Green) / 13 psid to 20 psid (Yellow) / 20 psid to 30 psid (Red).
MIDWEST INSTRUMENT 3-Color Differential Pressure Indicator: 1,000 psig Max. Static Pressure, 522 (MPN 522P-015). Key specifications — Brand: MIDWEST INSTRUMENT; Accuracy: ±5% of Full Scale; Sensor Material: Buna-N; Housing Material: Acetal Plastic; Transition Points: 0 psid to 7.5 psid (Green) / 7.5 psid to 11 psid (Yellow) / 11 psid to 15 psid (Red).
MIDWEST INSTRUMENT
MIDWEST INSTRUMENT 3-Color Differential Pressure Indicator: 1,000 psig Max. Static Pressure, 522 (MPN 522P-015). Key specifications — Brand: MIDWEST INSTRUMENT; Accuracy: ±5% of Full Scale; Sensor Material: Buna-N; Housing Material: Acetal Plastic; Transition Points: 0 psid to 7.5 psid (Green) / 7.5 psid to 11 psid (Yellow) / 11 psid to 15 psid (Red).
MIDWEST INSTRUMENT 3-Color Differential Pressure Indicator: 300 psig Max. Static Pressure, 555A (MPN 555A-43.0). Key specifications — Brand: MIDWEST INSTRUMENT; Accuracy: ±5% (0-3.5 psid to 0-43 psid); Sensor Material: Buna-N; Housing Material: Glass-Filled Nylon; Transition Points: 0 psid to 19.5 psid (Green) / 19.5 psid to 29.5 psid (Yellow) / 29.5 psid to 43 psid (Red).
MIDWEST INSTRUMENT
MIDWEST INSTRUMENT 3-Color Differential Pressure Indicator: 300 psig Max. Static Pressure, 555A (MPN 555A-43.0). Key specifications — Brand: MIDWEST INSTRUMENT; Accuracy: ±5% (0-3.5 psid to 0-43 psid); Sensor Material: Buna-N; Housing Material: Glass-Filled Nylon; Transition Points: 0 psid to 19.5 psid (Green) / 19.5 psid to 29.5 psid (Yellow) / 29.5 psid to 43 psid (Red).
MIDWEST INSTRUMENT 3-Color Differential Pressure Indicator: 1,000 psig Max. Static Pressure, 522 (MPN 522P-010). Key specifications — Brand: MIDWEST INSTRUMENT; Accuracy: ±5% of Full Scale; Sensor Material: Buna-N; Housing Material: Acetal Plastic; Transition Points: 0 psid to 5 psid (Green) / 5 psid to 7 psid (Yellow) / 7 psid to 10 psid (Red).
MIDWEST INSTRUMENT
MIDWEST INSTRUMENT 3-Color Differential Pressure Indicator: 1,000 psig Max. Static Pressure, 522 (MPN 522P-010). Key specifications — Brand: MIDWEST INSTRUMENT; Accuracy: ±5% of Full Scale; Sensor Material: Buna-N; Housing Material: Acetal Plastic; Transition Points: 0 psid to 5 psid (Green) / 5 psid to 7 psid (Yellow) / 7 psid to 10 psid (Red).