weltech digital hydrometer pw2050

Weltech Digital Hydrometer

Immediately identifies sources of damage and bruising

The Weltech Digital Hydrometer automatically and quickly calculates the dry matter content, starch percentage, underwater weight and specific gravity of potatoes using the weight in water method. It is used extensively throughout the potato industry by producers of all types of potato products.

dry matter basket with potatoes
dry matter measurement with the weltech digital hydrometer

Key Features

  • Dry matter content, starch percentage, underwater weight and specific gravity
  • Instant results – does not require a precisely-weighed sample; measures all potato dry matters
  • Easy to use – static unit, needs only a small water container (c.40cm deep); push-button control
  • Precise – digital read-out; accurate to +/- 0.3%; easy self-calibration (using a known test weight)
  • Data storage – internal memory for up to 5000 time and date stamped weights
  • 2 models – with or without USB data download facility
  • Standard or French fry dry matter testing

2 Versions available

weltech digital dry matter measurement


Standard unit: range 1.5-6Kg potatoes (must not exceed 10Kg)

Standard + USB data output

USB output: range 1.5-6Kg potatoes (must not exceed 10Kg)

All models include sample basket with suspension chain, rechargeable battery (up to 20 hours life), battery charger and strong carry case.

All models are suitable for standard and French fry dry matter testing

Which digital hydrometer model should you buy?

The instrument measures all potato dry matters in a sample of up to 6Kg of potatoes. To download data, we recommend the version with USB port and memory stick (thumb drive).

weltech dry matter measurement takes dry matter readings in water
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How to use the Weltech Digital Hydrometer

Simple button presses take the weight and display the data.

Full Details and Specifications

Weltech Hydrometer Range

HydrometerProduct CodeWeight range
StandardPOT/HYD/DIG1.5 - 6Kg
Must not exceed 10Kg
Standard + USBPOT/HYD/DIGUSB1.5 - 6Kg
Must not exceed 10Kg

Technical Specifications

DimensionsWeightAccuracyResolutionMemoryData outputPower
Weigher: 170 x 140 x 97mm
Case: 450 x 130 x 360mm
Weigher: 1.5Kg
w/ carry case: 2.14Kg
+/- 0.3% 0.01 scale reading5000 individual weights
Data stored if power off or batteries removed
XML file
Readable in Excel
(USB version only)
Internal rechargeable battery
Battery life: 3-4 years

Battery charger: Input 230v, 50Hz, 10W; Output 12V, 300mA, 3.6VA; c.12 hour re-charge time; display has charge level indicator; Charge duration: up to 15 hours; Battery life: 3-4 years 

NB. The Weltech Dry Matter Weigher is NOT waterproof 


Water containerWaterOperating conditions
356mm dia. x 400mm deep
Clean metal or plastic
Basket and sample must be fully immersed
Clean water
c.15°C / 60°F
-30 to 50°C up to 95% RH
(Avoid sudden changes that can
cause condensation)

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