SPECIFICATIONS

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📋 Specifications

Measurement range: ±830 inH₂O / ±30.00 psi / ±2068 mbar / ±206.8 kPa / ±61.08 inHg / ±1551 mmHg / ±480.0 ozin² / ±69.20 ftH₂O / ±2109 cmH₂O / ±2.109 kgcm² / ±2.068 bar
Resolution: varies by unit (0.01–1 as per unit)
Accuracy: ±0.3% FS
Linearity/hysteresis: ±0.1% FS
Repeatability: ±0.25% FS
Maximum pressure limit: 30 psi (do not exceed)
Pressure connection: 1/8" (3.18mm) quick connector
Measurement modes: differential pressure (DIF), positive pressure, negative pressure
Data recording: MAX, MIN, AVG (viewable in REC mode)
Data hold: yes (HOLD key)
Zero reset: press and hold HOLD for >5 seconds
Display: LCD with backlight (auto‑off after 30 seconds)
Units: 11 selectable (inH₂O, psi, bar, mbar, kPa, inHg, mmHg, ozin², ftH₂O, cmH₂O, kgcm²)
Auto power off: approx. 25 minutes (can be disabled)
Low battery indication: BAT symbol appears on display
Power supply: 2× AAA 1.5V batteries (included)
Operating temperature: 0°C – 40°C
Storage temperature: -10°C – 60°C
Dimensions: 160 × 62 × 31 mm
Weight: approx. 134g

📦 Package Includes

HP-189B digital differential pressure gauge main unit × 1
Silicone hose (for pressure connection) × 1
Lanyard (hand strap) × 1
User manual (English) × 1