The DP-CALC 5815 and 5825 micromanometers allow you to easily make HVAC pressure measurements. These robust instruments can be used with Pitot probes to measure duct velocity.
The DP-CALC 5815 is a simple to operate, hand held digital Micromanometer for fast, accurate differential and static pressure measurements. The high performance DP-CALC 5825 can calculate flow and has data logging capabilities.
Model 5825
Features and Benefits
- Measure differential and static pressure from -15 to +15 in. H2O (-3735 to +3735 Pa)
- Calculate and display velocity when using a Pitot tube
- Variable time constant
- Statistics
Added Features Model 5825
- Calculates flow
- Data logging with time and date stamp
- Stores 12,700+ samples and 100 test IDs
- Includes LogDat2™ downloading software
- Programmable K factors
Applications
- HVAC commissioning and troubleshooting
- Testing and balancing
- Pitot tube duct traverses
- Static pressure measurements
- Pressure drop across filters, coils, fans, and diffusers
- Environmental air flow testing
Specifications - DP-CALC Models 5815 and 5825
| Static/Differential Pressure | |
| Range1 | -15 to +15 in. H2O ( -28.0 to +28.0 mm Hg, -3735 to +3735 Pa) |
| Accuracy | ±0.005 in. H2O (±0.01 mm Hg, ±1% of reading ±1 Pa) |
| Resolution | 0.001 in. H2O (1 Pa, 0.01 mm Hg) |
| Velocity (Pitot Tube) | |
| Range2 | 250 to 15,500 ft/min (.27 to 78.7 m/s) |
| Accuracy3 | ±1.5% at 2,000 ft/min (10.16 m/s) |
| Resolution | 1 ft/min (0.1 m/s) |
| Duct Size (5825) | |
| 1 to 250 inches in increments of 0.1 in. | |
| (1 to 635 cm in increments of 0.1 cm) | |
| Volumetric Flow Rate (5825) | |
| Range | Actual range is a function of velocity, pressure, duct size, and K factor |
| Instrument Temperature Range | |
| Operating | 32 to 158°F (0 to 70°C) |
| Storage | -40 to 185°F (-40 to 85°C) |
| Data Storage Capabilities | |
| Range | 12,700+ samples and 100 test IDs |
| Logging Interval | |
| 1 second to 1 hour | |
| External Meter Dimensions | |
| 3.3 in. x 7.0 in. x 1.8 in. (8.4 cm x 17.8 cm x 4.4 cm) | |
| Meter Weight with Batteries | |
| 0.6 lbs. (0.27 kg) | |
| Power Requirements | |
| Four AA-size batteries or optional AC adapter | |
| 5815 | 5825 | |
| Differential and static pressure | • | • |
| Velocity with pitot tube | • | • |
| Calibration Certificate | • | • |
| Sample statistics | • | |
| Volumetric flow rate | • | |
| Actual and standard velocity | • | |
| Variable time constant | • | |
| LogDat2 data logging software | • | |
| K factor | • |
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