📊 pressure measurement range

Unit of measurement:

• mm of Water Column (mmH₂O)

Performance range:

• Low to medium differential pressure

• Accurate scale for air pressure difference

Scale feature:

• Center Zero

• Measurement of positive and negative pressure relative to the reference point

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🧭 safety and maximum pressure

• System working pressure up to about 25 psig

• Approximate equivalent: 1.72 bar

📌 This value represents the maximum safe tolerance of the system (not the original measurement range)

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📏 design and construction

• Type of device: Differential Pressure Switch/Gauge

• Series: 3000MR

• Display: accurate hand analog

• Internal mechanism: very sensitive diaphragm

• Design for very low pressure difference

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🏭 Industrial applications

This device is used in the following industries:

🌬 HVAC systems

• Pressure control of air channels

• Management of fans

• Control of air filters

🧪 clean rooms (Clean Room)

• Maintain accurate positive or negative pressure

🏭 industrial filtration systems

• Bag Filter

• Dust Collector

• Filter clogging control

⚙️ process equipment

• Fluid and air pressure difference monitoring

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🧠 how it works

PHOTOHELIC simultaneously:

1. It measures the pressure difference with high accuracy

2. Shows the value on the analog display

3. If the pressure reaches the set limit:

• The internal relay is activated or deactivated

• Manages the control system

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🎯 Key features

• High accuracy at low pressures

• Ability to set two control points (High / Low Setpoint)

• Stable performance in the industrial environment

• Standard 24VDC power supply

• Made in America (USA)

• Professional design for sensitive air and filtration systems

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📌 summary

PHOTOHELIC® Series 3000MR is a professional differential pressure control and measurement device manufactured by the American company Dwyer Instruments and used for precision industrial applications, especially in ventilation systems, filters and clean rooms.

This device is considered one of the reliable equipment in the field of precision instruments due to the combination of accurate measurement + electrical control + standard industrial design.

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