Logger type CTD with fast optical DO sensor

The RINKO-Profiler is a CTD with a fast-responding DO sensor as standard. The fast response time (0.4 s) reduces observation time, while achieving a detailed DO vertical distribution. You can measure water temperature, salinity and DO vertical profile measurement easily without a cable due to light weight (approx. 1.0 kg in water) and built-in recording design (The ASTD 152 model can also measure chlorophyll and turbidity as well). The high-capacity internal memory (1 GB) allows for recording up to 1,000 profiles (of 100 m depth at 0.1 s of sampling rate). Each profile is dated using the instrument internal clock. The power source is a rechargeable lithium battery that allows continuous use up to 10 h and 3 h of charge time. The RINKO-Profiler communicates between the interface and
ers the PC recharging the battery without opening Chlorophyll Turbidity the pressure case. The RINKO-Profiler serie 
have two types of interfaces: a PC communication model and a model that comes with a printer.

相關paper

1. Flores Melo, X., Martín J., Kerdel L., Bourrin F., Colloca C.B., Menniti C., de Madron X.D., (2020) Particle Dynamics in Ushuaia Bay (Tierra del Fuego)-Potential Effect on Dissolved Oxygen Depletion. Water, 12, 324. DOI: 10.3390/w12020324

Parameter	Range	Accuracy	Response Time
Temperature	-3~45℃	±0.01℃	0.2s
Dissolved Oxygen	Air saturation:0~200%	±2% FS	0.4s(2)
Depth	0~600m(1)	±0.3% FS	0.2s
Conductivity	0.5~75 mS cm-1	±0.01 mS cm-1	0.2s
Salinity	2~42	-	0.2s
Turbidity	0~1000 FTU	±2% MV or ±0.3 FTU	0.2s
Chlorophyll	0~400 ppb	±1% FS	0.2s

⁽¹⁾ Standard depth range. 1000m depth version is available upon request.
⁽²⁾ 63% response time (at 25℃ in air)