Kett  HI 300 Moisture Meter

Kett HI 300 Moisture Meter

HI300 Fresh Concrete Moisture Meter

Instant Moisture Readings on Freshly Mixed Concrete — Before the Batch Cures

The HI300 measures moisture content in freshly mixed concrete in under five seconds. Drop a sample into the cup, press the button, read the result. No waiting for loss-on-drying ovens, no batch sitting on hold while results come back. Built for ready-mix plants, jobsite QC, and any operation where moisture decisions need to happen at mix speed.

  • ±0.5% accuracy on fresh concrete: Factory-calibrated capacitance measurement matches loss-on-drying results without the wait.
  • Three-second response per sample: Test the batch, log the value, release the load. No production delays waiting for lab confirmation.
  • 126-reading onboard memory: Track moisture across a shift or a pour. RS232C output for batch records and QC documentation.
  • Built for the plant floor: No moving parts, vibration-tolerant, orientation-independent. Runs on AC or six C-cell batteries for portable use.

Specifications :

ModelHB300
Measurement Range0-99% (Product Dependent)
Measurement DistanceContact
PrincipleElectrical Resistance
Response TimeInstant
AccuracyProduct Dependent
Resolution0.1%
DisplayChannel, Value, Sample ID, Alarm
Ambient Temperature0-40°C
Ambient Humidity0-90% RH (non-condensing)
Power Source6-AA Batteries (1.5V)
FunctionsAverage, Offset, Alarm, Auto-Off
Display TypeLCD (Digital
CommunicationsRS232C
Measurement ModesSingle and Average
Weight (kg) (Net/Shipment0.5/2.0
Dimensions (mm)110Wx210Hx50(D)
WarrantyOne Year Parts and Labor Maintenance Agreements avail-able


HI300 Fresh Concrete Moisture Meter

Instant Moisture Readings on Freshly Mixed Concrete — Before the Batch Cures

The HI300 measures moisture content in freshly mixed concrete in under five seconds. Drop a sample into the cup, press the button, read the result. No waiting for loss-on-drying ovens, no batch sitting on hold while results come back. Built for ready-mix plants, jobsite QC, and any operation where moisture decisions need to happen at mix speed.

  • ±0.5% accuracy on fresh concrete: Factory-calibrated capacitance measurement matches loss-on-drying results without the wait.
  • Three-second response per sample: Test the batch, log the value, release the load. No production delays waiting for lab confirmation.
  • 126-reading onboard memory: Track moisture across a shift or a pour. RS232C output for batch records and QC documentation.
  • Built for the plant floor: No moving parts, vibration-tolerant, orientation-independent. Runs on AC or six C-cell batteries for portable use.

Specifications :

ModelHB300
Measurement Range0-99% (Product Dependent)
Measurement DistanceContact
PrincipleElectrical Resistance
Response TimeInstant
AccuracyProduct Dependent
Resolution0.1%
DisplayChannel, Value, Sample ID, Alarm
Ambient Temperature0-40°C
Ambient Humidity0-90% RH (non-condensing)
Power Source6-AA Batteries (1.5V)
FunctionsAverage, Offset, Alarm, Auto-Off
Display TypeLCD (Digital
CommunicationsRS232C
Measurement ModesSingle and Average
Weight (kg) (Net/Shipment0.5/2.0
Dimensions (mm)110Wx210Hx50(D)
WarrantyOne Year Parts and Labor Maintenance Agreements avail-able