Ohaus Portable Meter ST400M Meter (IP67) 30468990

The Ohaus Portable Meter ST400M Meter (IP67) model 30468990 is a rugged waterproof portable device designed for field measurement and analysis of pH, conductivity, TDS, salinity, and resistivity in water samples.

Key Features:

• pH measurement range: -2.00 to 16.00 pH with ±0.01 pH accuracy and 0.01 pH resolution
• Conductivity measurement range: 0 μS/cm to 199.9 mS/cm with ±0.5% full scale accuracy and 0.1 μS/cm resolution (auto-range)
• TDS measurement range: 0.1 mg/l to 199.9 g/l with 0.01 mg/l resolution and ±0.5% full scale accuracy
• Salinity measurement range: 0.0 to 99.9 psu with 0.01 psu resolution and ±0.5% full scale accuracy
• Resistivity measurement range: 0 to 20 MΩ-cm with 0.01 MΩ resolution and ±1 mV accuracy
• Temperature measurement range: -5°C to 110°C with ±0.3°C accuracy and 0.1°C resolution, using a 30 kΩ NTC temperature sensor and automatic compensation
• Data storage capacity: up to 1000 measurement records
• Power supply: rechargeable lithium battery (2600mAh) or 4 AAA batteries, providing approximately 40 hours of uninterrupted use
• IP67 rated waterproof housing and probes with rubber cover for rugged field use
• Device dimensions: approximately 230 mm length, 100 mm width, 40 mm height; weight approx. 0.35 kg
• Communication via built-in micro-USB port for easy data transfer

Advantages:

• Wide measurement ranges and high accuracy enable precise monitoring of multiple water quality parameters in diverse field conditions
• Waterproof IP67 housing and probes allow reliable operation in wet and harsh environments without damage
• Long battery life and rechargeable power options reduce downtime and maintenance in fieldwork
• Large onboard data storage with easy USB transfer supports efficient data management and traceability
• Automatic temperature compensation improves accuracy across variable temperature conditions
• Compact and lightweight design enhances portability and ease of use during onsite testing