Envco – Environmental Equipment

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
•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

Included Items
•Instrument
•Hard carrying case
•Static pressure tip
•Pressure tubing
•Downloading software with cable
•NIST or EAL calibration certificate
•Operation and service manual

Specifications
Specifications are subject to change without notice.
Static / Differential Pressure:
Range1: -15 to +15 in. H2O (-28.0 to +28.0 mm Hg, -3735 to +3735 Pa)
Accuracy: ±1% of reading ±0.005 in. H2O (±0.01 mm Hg, ±1 Pa)
Resolution: 0.001 in. H2O (0.1 Pa, 0.01 mm Hg)

Velocity From a Pitot Tube:
Range2: 250 to 15500 ft/min (1.27 to 78.7 m/s)
Accuracy3: ±1.5% at 2000 ft/min (10.16 m/s)
Resolution: 1 ft/min (0.1 m/s)

Duct Size:
Range: 1 to 250 inches in increments of 0.1 in. (1 to 635 cm in increments of 0.1 cm)

Volumetric Flow Rate:
Range: Actual range is a function of actual velocity, pressure, duct size, and K factor

Instrument Temperature Range:
Operating : 40 to 113°F (5 to 45°C)
Storage: -4 to 140°F (-20 to 60°C)

Instrument Operating Conditions:
Altitude up to 4000 meters
Relative humidity up to 80% RH, non-condensing
Pollution degree 1 in accordance with IEC 664
Transient over voltage category II

Data Storage Capabilities:
Range: 12,700+ samples and 100 test IDs

Logging Interval:
Intervals: 1 second to 1 hour

Time Constant:
Intervals: User selectable

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:
Weight with batteries: 0.6 lbs (0.27 kg)

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.