Envco – Environmental Equipment

Features and Benefits
•Differential pressure from -1245 to 3735 Pa
•Available 16-point velocity matrix for quick averaged readings per square foot
•Long battery life and fast recharge
•Auto-zeroing technology eliminates manual zero calibrations between readings
•Accuracy even in low range conditions
•Sampling and statistics functions
•Full data logging and included LogDat software
•Variable time constant
•Large digital display

Applications
•Energy efficiency studies
•Fume hood and biological safety cabinet face velocity spot checking
•HVAC system testing, adjusting and balancing
•Building and system commissioning
•Cleanroom testing

Included Items
•Carrying case
•Downloading software
•Calibration certificate
•Operation and Service Manual
•AA rechargeable NiMH batteries (4), battery charger and AC adapter
•Pitot probe
•State pressure probes (2)
•Tubing
•LogDat downloading software

Model 8710 DP-CALC™ Micromanometer and
Model 8375 ACCUBALANCE® Modular Air Balancing Tool
Range
Differential pressure: ±15 in. H2O (3735 pa); 150 in. H2O maximum safe operating pressure
Absolute pressure: 15 to 40 in. Hg (356 to1016 mm Hg)
Velocity: 25 to 8,000 ft/min (0.125 to 40 m/s) pitot probes; 25 to 5,000 ft/min (0.125 to 25 m/s) air flow probe; 25 to 2,500 ft/min (0.125 to 12.5 m/s) velocity matrix
Volume: 25 to 2,500 ft3/min (42 to 4250 m3/h) capture hood
Temperature: -40 to 250°F (-40 to 121°C)
temperature probe
14 to 140°F (-10 to 60°C)
temperature/RH probe
40 to 140°F (4.4 to 60°C)
operating (electronics)
Storage temperature... -4 to 160°F (-20 to 71°C)

Rh: 0 to 95% RH temperature/RH probe

Resolution
Pressure: 0.00001 in. H2O (0.001 pa) static and differential; 0.01 in. Hg (1 mm Hg) absolute
Velocity : 1 ft/min (.01 m/s)
Volume : 1 ft3/min (1 m3/h)
Rh: . 0.1% RH
Temperature: 0.1°F (0.1°C)

Accuracy
Pressure: ±2% of reading ±0.001 in. H2O (0.25 pa) static and differential; ±2% of reading absolute
Velocity: ±3% of reading ±7 ft/min (0.04 m/s) >50 ft/min (>0.25 m/s)
Volume: ±3% of reading ±7 ft3/min (12 m3/h) >50 ft3/min (>85 m3/h)
Rh: ±3% RH
Temperature: ±0.5 °F (0.3°C) from 32 to 160°F (0 to 71°C); max ±2.0 °F (1.2°C) from -40 to 32°F (-40 to 0°C) and from 160 to 250°F (71 to 121°C)

Units
Pressure: in. H2O, pa, hPa, kPa, mm Hg, in. Hg, cm Hg, mm H2O, cm H2O
Velocity: ft/min, m/s
Volume: ft3/min, m3/h, m3/min, l/s
Temperature: degrees F, degrees C

Statistics: min, max, average up to 1000 readings
Data Storage: 1000 readings, time and date stamped
Logging Interval: user selectable (10 to 600 seconds)
Response Time: 2 to 8 seconds
Display: 6 digit, 0.75 in. character height, multi-line, sectored, multiple symbolic icons, high-contrast backlit LCD

Dimensions
(micromanometer only) 7.4 in. x4.5 in. x2.3 in. (18.8 cm x11.4 cm x5.8 cm)
Pressure connection... ¼ in. OD straight ports for use with 3/16 in. ID flexible tubing
Weight with batteries .. 8710 17 oz (0.5 kg); 8375 7.4 lb (3.4 kg)

Power requirements.... four AA-size cells, rechargeable NiMH (included) or alkaline, or AC adapter (included), 7.5 VDC,
1.6 A, regulated
Battery life: minimum of 12 hours typical
Recharge time: 1 hour (external charger); 4 hours (internal charger)

Hood sizes available
Standard: 2 ft x2 ft (610 mm x610 mm)
Optional:
2 ft x 4 ft (610 mm x1220 mm);
1 ft x4 ft (305 mm x1220 mm);
1 ft x5 ft (305 mm x1525 mm);
3 ft x 3 ft (915 mm x915 mm)

RS232C output: ASCII character codes; 1200, 2400, 4800, 9600, 19200 baud rate (selectable) no parity 8 data bits
1 stop bit no handshaking

Warranty: 2-year factory warranty