Starcon- Water Electrode Conductivity instrument
The Model 6536 Water Electrode Conductivity instrument is a complete measurement system suitable for permanent field installation. Graphite electrodes, combined with zero potential measurement technique, maximise stability and reduce effects due to algal growth and other water pollutants. Three inbuilt ranges allow the one instrument to cover a wide range of conductivities.
Autoranging means the instrument works at its optimum resolution throughout the operating range. This enables monitoring of saline conditions whilst still accurately measuring flushes of fresh water.
Temperature is measured within the sensing cell to provide precision correction. Both temperature corrected and uncorrected conductivity measurements are available for recording.
A STARLOG compatible MicroLogger is part of the instrument, providing all the standard features such as SDI-12, intelligent battery supervision, modem interface and all the programmability found in the Stralog Software.
Ultra low-power consumption makes the instrument ideal for remote, unattended operation. This instrument will operate for months from a single 12 V Battery
Combined with water flow measurement system, the Model 6536 Conductivity instrument provides a complete salt load recording package.
The Model 6536 Instrument consists of a small sensing probe connected by a cable to the measurement and recording electronics housed in a separate enclosure.
Instrument Specifications
| EC Operating Range: | 0 to 200,000µS/m in three autoranged stages |
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| EC Accuracy: | ±0.5% of reading between 1 and 100,000µS/cm |
| EC Resolution: | 0.01 µS/cm |
| Temperature Range: | -20 to 60°C |
| Temperature Accuracy: | ±0.1°C |
| Temperature Resolution: | 0.0612°C |
| EC Temperature Compensation Range: | 0-60°C |
| Channels: | Conductivity 0-200,000 (uncompensated) Conductivity 0-200,000 (temperature compensated) Conductivity 0-65,535 (uncompensated) Conductivity 0-65,535 (temperature compensated) Water Temperature Battery Voltage |
| Scan Rate: | 5 seconds to 5 minutes (programmable) |
| Log Interval: | 5 seconds to 1 week (programmable) |
| Memory: | 120K CMOS |
| Instrument Cable: | «SQL» cable with computer and battery connections |
| Power Source: | Supplied by external battery 12V DC. Small solar panel ensures continuous operation. Instrument is reverse polarity protected. |
| Power Consumption: | 55mA operating, 50µA standby, 0.1Ah per day (at 1 minute scan rate) |
| Housing Material: | ABS |
| Housing Size: | 75×75×250mm H×W×L |
Probe Specifications
| Sensor Type: | Four (4) Electrode, cocentric graphite |
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| Immersion Depth: | 36mm minimum to total length (<80°C) maximum maximum 120mm (<100°C) |
| Pressure Resistance | 2 bar |
| Cell Constant: | 0.475cm-1 ±1.5% |
| Connections: | cable, 7-pin «SQL» plug, IP67 measuring cell, IP68 |
| Thermistor Type: | integrated NTC (30k-ohm/25°C) |
| Material: | Epoxy, black |
| Dimensions: | 15.3mm dia × 120mm long shaft 21.7mm dia connection head 162.5mm total length |
| Sensor Cable: | 5 metres standard. Other available lengths are 1.5, 3, 10, 15 and 20 metres. |