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Dwyer 475-1-FM Intrinsically Safe Handheld Digital Manometer
- Regular price
- $707.00
- Sale price
- $707.00
- Regular price
-
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Product Description P/N: 475-1-FM
Description
Dwyer 475-1-FM is an intrinsically safe handheld digital manometer for measuring air and compatible gas pressure. Its 0–20 in. w.c. range and ±0.5% full-scale accuracy support HVAC troubleshooting, pressure monitoring, and field instrument checks.
Technical Specifications
| Condition | New/Never Used Surplus |
| Brand | Dwyer |
| Category | Pressure Measurement |
| Part Number | 475-1-FM |
| Subcategory | Digital Manometers |
| Series | 475 Mark III |
| Instrument type | Handheld digital manometer |
| Measurement range | 0–20.00 in. w.c. (0–4.982 kPa) |
| Maximum pressure | 10 psig (68.9 kPa) |
| Display | Four-digit LCD, 0.42 in. (10.6 mm) digits |
| Power source | 9 V alkaline battery |
| Connections | Two barbed ports for 1/8 in. or 3/16 in. ID tubing |
| Approvals | FM, CE |
| Weight | 306 g |
Information About 475-1-FM
The 475-1-FM is part of Dwyer’s Series 475 handheld manometer line. It measures positive, negative, or differential pressure and displays readings on a four-digit LCD. When paired with a compatible Pitot tube and air-velocity accessories, it can also be used to measure air velocity. The FM-approved design is rated for specified Class I, Division 2 hazardous locations.
Key Features:
-
Differential Pressure Measurement: Measures positive, negative, and differential pressure in air and compatible gases.
-
Pressure Range: Measures pressure from 0 to 20.00 in. w.c. (0 to 4.982 kPa).
-
High Accuracy: Provides ±0.5% full-scale accuracy under specified reference temperature conditions.
-
Digital LCD Display: Features a four-digit LCD with 10.6 mm character height for clear pressure readings.
-
Intrinsic Safety Certification: FM-approved for specified hazardous locations, Class I, Division 2, Groups A, B, C, and D, T4.
-
Multiple Pressure Units: Allows selection of English or metric pressure units.
-
Simple Operation: Front-panel controls provide power, auto-zero, and pressure-unit selection.
-
Rugged Construction: Features a protective aluminum housing for portable industrial use.
-
Battery Powered: Operates on a replaceable 9 V alkaline battery.
-
Air Velocity Measurement: Can be used with a compatible Pitot tube to determine air velocity in HVAC and ventilation systems.
The 475-1-FM delivers reliable pressure measurement for HVAC troubleshooting, combustion equipment testing, field calibration, and industrial air-flow diagnostics.
Description
Dwyer 475-1-FM is an intrinsically safe handheld digital manometer for measuring air and compatible gas pressure. Its 0–20 in. w.c. range and ±0.5% full-scale accuracy support HVAC troubleshooting, pressure monitoring, and field instrument checks.
Technical Specifications
| Condition | New/Never Used Surplus |
| Brand | Dwyer |
| Category | Pressure Measurement |
| Part Number | 475-1-FM |
| Subcategory | Digital Manometers |
| Series | 475 Mark III |
| Instrument type | Handheld digital manometer |
| Measurement range | 0–20.00 in. w.c. (0–4.982 kPa) |
| Maximum pressure | 10 psig (68.9 kPa) |
| Display | Four-digit LCD, 0.42 in. (10.6 mm) digits |
| Power source | 9 V alkaline battery |
| Connections | Two barbed ports for 1/8 in. or 3/16 in. ID tubing |
| Approvals | FM, CE |
| Weight | 306 g |
Information About 475-1-FM
The 475-1-FM is part of Dwyer’s Series 475 handheld manometer line. It measures positive, negative, or differential pressure and displays readings on a four-digit LCD. When paired with a compatible Pitot tube and air-velocity accessories, it can also be used to measure air velocity. The FM-approved design is rated for specified Class I, Division 2 hazardous locations.
Key Features:
-
Differential Pressure Measurement: Measures positive, negative, and differential pressure in air and compatible gases.
-
Pressure Range: Measures pressure from 0 to 20.00 in. w.c. (0 to 4.982 kPa).
-
High Accuracy: Provides ±0.5% full-scale accuracy under specified reference temperature conditions.
-
Digital LCD Display: Features a four-digit LCD with 10.6 mm character height for clear pressure readings.
-
Intrinsic Safety Certification: FM-approved for specified hazardous locations, Class I, Division 2, Groups A, B, C, and D, T4.
-
Multiple Pressure Units: Allows selection of English or metric pressure units.
-
Simple Operation: Front-panel controls provide power, auto-zero, and pressure-unit selection.
-
Rugged Construction: Features a protective aluminum housing for portable industrial use.
-
Battery Powered: Operates on a replaceable 9 V alkaline battery.
-
Air Velocity Measurement: Can be used with a compatible Pitot tube to determine air velocity in HVAC and ventilation systems.
The 475-1-FM delivers reliable pressure measurement for HVAC troubleshooting, combustion equipment testing, field calibration, and industrial air-flow diagnostics.
