Air Ion Counter Model AIC3Pro


Precis-Ion™ Air Ion Counter Model AIC3Pro is a lightweight, handheld Gerdien condenser meter that measures the number of positive or negative air ions. The meter can display both polarities and their sum. It also features a Li battery and data/time stamped data recording via a removable MicroSD card.

SKU: AIC3Pro Category: Tags: , ,


The AIC3Pro comes packed full with all these features:

  • Dual Polarity Display with Sum
  • Ranges, 2 million ions/cc, or 200 million ions/cc – Selectable
  • Data Recording, Date/Time Stamped – Stored on Removable MicroSD Card
  • Data Streaming, Record Uploading, and Plotting – via Included PC App
  • Automatic re-zero for long-term unattended operation – Selectable
  • Peak Level Capture
  • Averaging – Selectable
  • Rechargeable Li Battery
  • Tripod Mount, Wall Mount, and Dest Top Kick Stand
  • Deluxe Carrying Case


Ion Polarity
Positive, Negative, or Dual polarity with Sum – Selectable.
In dual polarity mode, polarities are alternately updated every 7.5 sec.
Ion Scale Range 2 million or 200 million ions/cc – Selectable
Ion Resolution 10 ions/cc in 2 million scale, 1000 ions/cc in 200 million scale
Ion Accuracy +/- 20%*, repeatability 5%
Averaging None or 1 second to 15 seconds – Selectable
Peak Value Selectable (in single polarity mode only)
Data Recording Date and Time stamped files in a standard CSV format (supported by most data analysis software). Includes Ion Level, temperature, and humidity. In dual polarity mode, both polarities and sum are recorded. Data is recorded onto a removable MicroSD, 32GB max.
Streaming/Plotting AlphaApp (free of charge Windows PC application) provides real-time data streaming, recorded data uploading, and plotting via a supplied 6’ USB cable.
Humidity Sensor +/- 2% Relative Humidity
Meter Zeroing Zero reference calibrated and self-test – Selectable Automatic re-zeroing for long term unattended operation None or 3, 6, 12, or 24hr – Selectable
Auto Shutdown
None or 5, 15, 30, or 60min. – Selectable
Display 128×128 pxl LCD, Backlight level is Selectable
Battery 2,000mAh rechargeable lithium-ion, UN38.3 certified 6-7 operating hours, Charging via USB C port with any USB power source
Charger (Included) Input 110-240V, 50-60Hz, .35A, Output 5VDC, 1A
Environmental Limits
Temp -20°C to 43°C, Humidity 0-85% non-condensing Wind, <15km/hr (9mph)
Accessories (Included) ESD shielding cap, Earthing ground cable with connectors. 3-in-1 kickstand, wall mount, and tripod mount. Deluxe protective carrying case.
Meter Size 6.6” x 3” x 1.5” (166.7mm x 76.2mm x 38.1mm)
Meter Weight
12.9 oz. (366 grams)
Carry Case
12″ x 10.6″ x 2.7″ (305mm x 269mm x 69mm), 1.1 lbs. (.5kg)
FCC Compliance
Part 15
CE Compliance
EMC: BS EN 55032:2015/Cor 1:2016, BS EN 61000-3-2:2019, BS EN 61000-3-3:2013+A1:2017, BS EN 55035:2017/A11:2020
RoHS: EN 50581:2012


Air ion counter AIC


Air Ion Counter AIC2



Dual Scale 2M /200M Single scale specified with order
Zeroing Manual Auto 50 seconds Auto 10 Seconds or Manual
Averaging 3 Seconds 2, 5 or 14 seconds None or 1 to 15 seconds
Peak Hold
Temperature Units C C or F
Analog Output
Battery Type

AA, 4 each

Li, UN38.3 Certified

Ion Polarity:
-Dual Polarity Display
-Sum of Both Polarities

Data recording:
-Ion Level
-Standard Spreadsheet
-Removable SD Card
-Dual Polarity
-Sum of Both Polarities

Only via AlphaApp

Recording Storage Internal Removable SD Card
8GB Supplied, 32GB Max
-File upload

Single Polarity Level

All or Select Portions of Available Data
Auto Shut Down after Specified Period Selectable
Automatic Rezero After Specified Period For Long Term Unattended Operation Selectable
Agency Compliance

Size 6.6”x 3.7” x 3” 7.7”x 4”x 1.75” 6.6” x 3” x 1.5”
Kick Stand
Wall Mount
Tripod Mount
Deluxe Carrying Case
External Power 9VDC 9VDC USB
1. The unpredictable nature of ion self-destruction in the air just outside the meter makes more accurate measurement impossible (some ions are lost as air is redirected, positive and negative ions neutralize each other spontaneously, etc.)