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  • Differential Pressure
    • Range: ±15 in. wc (3735 Pa)
    • Best Accuracy: 2% of reading ±0.001 in. H2O
    • Max Pressure: 150 in. H2O
  • Absolute Pressure
    • Range: 15 to 40 in. Hg
    • Accuracy: 2% of reading
  • Air Velocity
    • Range: Up to 25 to 8,000 ft/min (0.13 to 41 m/s)
    • Accuracy: 3% of reading; ±7 ft/min (0.04 m/s)
  • Temperature Probe
    • Range: -40 to 250 °F (-40 to 121 °C)
    • Accuracy: Up to ±0.5 °F (0.3 °C)
  • Relative Humidity Probe
    • Range: 0 to 95% RH
    • Accuracy: 3% RH
  • Averaging Capability: Up to 1,000 values of each measured parameter
  • Sampling Interval: Continuous or user-selectable (10 to 600 s)
  • Response Time: 2 to 8 s

The TSI Alnor DP-Calc 8710 micromanometer is a comprehensive measurement solution for industrial hygienists, certification personnel and HVAC professionals who measure pressure, temperature, air velocity and air flow. This innovative instrument features a velocity matrix, auto zero and low-flow accuracy for fast, reliable measurements.

The 16-point velocity matrix of TSI Alnor DP-Calc 8710 micromanometers allow for quick averaged readings per square foot. Auto-zeroing technology eliminates manual zero calibrations between readings. The 8710 is also accurate in low range conditions and features a long battery life (12 hours) and faster recharge time than other available micromanometers.

The TSI Alnor DP-Calc 8710 micromanometer ships complete with carrying case, 18" (46cm) pitot probe, two static pressure probes, two 8-foot (2.4 m) neoprene tubes, user manual, LogDat1 software, serial interface cable, neck strap, internal battery charger, 4 AA NiMH rechargeable batteries, universal AC adapter and NIST traceable calibration certificate.


Temperature Range-40 to 250 °F (Probe dependent)
Temperature Resolution0.1 °F
Velocity Range25 to 8,000 ft/min (0.13 to 41 m/s) Pitot Probe
25 to 5,000 ft/min (0.13 to 25 m/s) Air Flow Probe
25 to 2,500 ft/min (0.13 to 13 m/s) Velocity Matrix
Temperature Accuracy±0.5 °F (0.3 °C) from 32 to 160 °F (0 to 71°C); typically ±1.0 °F (0.6 °C) from -40 to 32 °F (-40 to 0 °C) and from 160 to 250 °F (71 to 121 °C)
Operating Temp40 to 140°F
Power Supply4 AA batteries Or AC adaptor
Battery Life12 hr
Velocity Resolution0.1 m/s
Velocity Accuracy3% of reading; ±7 ft/min (0.04 m/s) All Probes
Additional InformationAuto-zeroing technology eliminates manual zero calibrations
between readings
Pressure Range15 to 40 in. Hg (356 to 1016 mm Hg)
Pressure Accuracy2% of reading
Time Constant2 to 8 seconds
Relative Humidity Range0 to 95% RH
Relative Humidity Accuracy3% RH
Relative Humidity Resolution0.1% RH
Volumetric Flow RangeN/A
Volumetric Flow AccuracyN/A
Volumetric Flow ResolutionN/A
TSI Alnor 800187 Air Flow Probe
18" (46 cm) air flow probe designed for use with the TSI Alnor EBT721 balometer
TSI Alnor Velocity Matrix Probe
Telescopic, articulated probe for the TSI Alnor velocity matrix
TSI Alnor Pitot Probes
Various length Pitot probes designed for use with TSI Alnor instruments
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Power Supplies
TSI Alnor 801040 Power Cord
Power cord designed for use with the TSI Alnor EBT720, EBT721, 8710, 8375 and PH72 units
TSI Alnor Battery Pack
NiMH battery holder with four AA NiMH batteries
TSI Alnor Battery Charger
Battery charger with four AA NiMH batteries, 115V-240V
TSI Alnor AA NiMH Battery
AA NiMH battery designed for use with TSI Alnor instruments
Carrying cases, spare cases
TSI Alnor DP-Calc Carrying Cases
Carrying cases designed for use with the TSI DP-Calc micromanometers
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Please consider these optional accessories.
TSI Alnor 801090 Velocity Matrix
16-point grid that averages air velocity and is designed for use with the TSI Alnor EBT721 balometer
In Stock
TSI Alnor Norprene Tubing
The TSI Alnor 372000000 Norprene tubing comes in an 8-foot (2.5 meter) length