Portable D.O Analyzer HK-258 

Features 
 - Polarography electrode to test the D.O., which is suitble for low concentration oxygen testMeasurement precision:μg level.
 - Transmitter and handset seperated, and transmitter can work alone.
 - Transmitter adopts waterproof configuration, with waterproof level achieves IP65, which is more convenient for measurement.
 - Wireless transmission technology realizes communication between handset and transmitter, which enables the user to operate within certain distance.

Specifications
 - Display
 +  Transmitter:4 digit LCD
 +  Handset:320×240 color lattice LCD
 - Measurement range : (0~20)mg/L
 - Resolution : 0.1μg/L,0.01mg/L
 - Display error : ±0.3mg/L
 - Repeatability error : ≤0.15mg/L
 - Temp. comp. Range : (0~50)℃(auto or manual)
 - Temp. Error : ±0.5℃
 - Temp. Resolution : 0.1℃
 - Respond time : ≤60s
 - Zero error : ≤0.10mg/L 
 - Salinity comp. Error : ±2%
 - Work time
 +  Transmitter≥40h when fully charged
 +  Handset≥30h when fully charged
 - Communication distance : ≥10m(with ambient open and no interference)
 - Storage temp. : (-20~55)℃(electrode not included higher than 0℃ for the electrode)
 - Dimension
 +  Transmitter:123mm×86mm×267mm (L×W×H)
 +  Handset: 68mm×136mm×28mm (W×H×D)
 - Weight
 +  Transmitter: 1.5kg
 +  Handset: 0.2kg