Moisture Testers - Color: Yellow & Black

Example Moisture Testers (for reference)
Best overall (grain testing)
GM640 Portable Digital Grain Moisture and Temperature Meter
3,599

Flipkart + others
Budget option (grain)
Smart Sensor AR991 Food Grain Moisture Meter 1,890
Affordable handheld grain moisture tester with digital display and multi-grain calibration.
Soil testing (multi-parameter)
Zomei 3-in-1 Soil Moisture pH Temperature Tester 1,590
Measures soil moisture, pH, and temperatureideal for agriculture and gardening.
Key Specifications of Moisture Testers
1. Measurement Range
Grain: typically 8% 40% moisture content
Soil: relative scale (drywet) or % (0100%)
Wood/building: 5% 60%

Choose range based on material (grain needs narrow, soil broader).

2. Accuracy
Typical: 0.2% to 0.5% for grain meters
Soil meters: 25% (less precise but acceptable)

Critical for commercial/agriculture grading.

3. Measurement Principle
Electrical resistance (most common for grains/wood)
Capacitance (non-destructive, used in soil & bulk materials)
Microwave/infrared (industrial/high-end)
4. Display Type
LCD / LED digital display
Some advanced models include:
Backlight
Graphical readings
Mobile app (IoT devices)
5. Calibration / Material Settings
Multi-material calibration (e.g., wheat, rice, maize)
Advanced units store 550 crop types

Important for agriculture accuracy.

6. Temperature Compensation
Automatic temperature correction
Ensures accurate readings in varying environments
7. Power Supply
Battery operated (AA / 9V)
Rechargeable (USB) in newer models
Industrial units may use AC supply
8. Probe Type
Pin-type (invasive):
High accuracy
Used in grains, wood
Pinless (non-invasive):
Surface measurement
Used in building materials
9. Additional Features
Data storage / memory
Auto shut-off
Average reading function
Error correction
Bluetooth / IoT connectivity (advanced)
Comparison Table
Attribute
GM640 Portable Digital Grain Moisture and Temperature Meter
3,599

Flipkart + others

Smart Sensor AR991 Food Grain Moisture Meter
1,890

Amazon.in

Zomei 3-in-1 Soil Moisture pH Temperature Tester
1,590

Flipkart

ApplicationGrain + tempGrainSoil
Moisture RangeWide (grain-specific)ModerateRelative / soil-based
AccuracyHighMediumMedium
Measurement TypeResistance + tempResistanceProbe sensor
Extra FeaturesTemperature