OHAUS STARTER 400M Portable Multi-Parameter Meter

The OHAUS STARTER 400M Portable Multi-Parameter Meter is engineered for dependable performance in demanding field conditions. Its durable, waterproof exterior and compact, lightweight build make it well-suited for extended use around moisture or harsh outdoor environments. Outfitted with a rugged protective sleeve and powered by a long-lasting rechargeable lithium battery, the ST400 delivers reliable measurements for hours at a time. The meter’s clear LCD screen and user-friendly interface simplify operation, while integrated USB connectivity allows quick and convenient data export when needed.

Key Features

  • Fully IP67-rated housing and probes, paired with a shock-absorbing rubber cover, ensure the meter withstands heavy field use and wet conditions without compromising performance.
  • Rechargeable lithium battery supports up to 40 hours of continuous measurement and offers over 300 recharge cycles, reducing downtime and eliminating frequent battery replacements.
  • Streamlined software with guided prompts helps users navigate setup and testing. Essential details—such as electrode status—are clearly displayed on the large, easy-to-read LCD.
  • Stores up to 1,000 data sets, and when memory is full, measurements can be swiftly exported to a computer using the built-in micro-USB port, guaranteeing complete record retention


Specifications for OHAUS STARTER 400M Portable Multi-Parameter Portable Meters
Display LCD Backlit Display
Measurement Range
(Temperature)
-5 °C – 110 °C
Measurement Range -1,999 mV – 1,999 mV
Conductivity measuring range 0.01 μS/cm-199.9 mS/cm
Conductivity accuracy (±) 0.50%
pH accuracy 0.01
pH measuring range -2 – 16
pH resolution 0.01
Resistivity measuring range 0 MOhm – 20 MOhm
Resistivity resolution 0.01 MOhm
Resolution Cond. (Variable) 0.1 – 199.9
Resolution (Voltage) 1 mV
Temperature compensation Automatic
Temperature resolution 0.1 °C
Temperature Sensor 30 KΩ NTC
Battery Life 40 Hours with Rechargeable Battery
Dimensions 9.05 in x 1.57 in x 3.94 in
Net Weight 0.77 lb (0.35 kg)
Working Environment 41°F – 104°F, 80% RH, Non-condensing
Filter
Item No. Product Description Model No. Unit of Measure Your Cost Purchase
MULTI-PARA ANALYZER ST400M-G
8175-03
Meter + Electrodes ST320, STCON3 IP67 + Portable Bag ST400M-G Each
$1,034.59
Add to Cart This item is not currently stocked. Allow 2-3 weeks. Please contact us if you'd like us to keep stock in the future. In Stock
MULTI-PARA ANALYZER ST400M-B
8175-01
pH Meter Only ST400M-B Each
$810.88
Add to Cart This item is not currently stocked. Allow 2-3 weeks. Please contact us if you'd like us to keep stock in the future. In Stock
MULTI-PARA ANALYZER ST400M-F
8175-02
Meter + Electrodes ST320 IP67, STCON3 IP67 ST400M-F Each
$1,011.55
Add to Cart This item is not currently stocked. Allow 2-3 weeks. Please contact us if you'd like us to keep stock in the future. In Stock