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Help CenterOD7685 Digital Dissolved Oxygen Transmitter Stable Measurement for Wastewater Treatment
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The application scope of OD7685 dissolved oxygen meter
Sewage treatment, drinking water, fish ponds, food industry, biological fermentation
Function
The input options are: polarographic sensor, current sensor or 080610.2 preamplifier sensor
Measurement units: ppm, mg/l, mmHg column or % air saturation
Automatically adjust the range
The temperature is readable
"Program filtering"
Display the set parameters
Display of set points and alarm condition Settings
Automatic correction in air
Automatic and manual temperature compensation
Pressure, humidity and salinity compensation
Output: 0-2 or 4-20mA are selectable
Automatic and manual operation
It features lag, delay, and high/low action setting functions
Set the timer alarm delay function high/low
Automatic cleaning delay or continuous function
Parameter
Polarographic sensor
Sensor low current: 25-50nA
Sensor high current: 250-500nA
Polarographic current: 0-1250mV
Current sensor
Input: 25-50mA
Display unit (optional
Oxygen partial pressure: 0-200.0mmHg
0-200.0% air saturation
0-20.00 parts per million
0-20.00 mg/l
Zero adjustment: ±10%
Sensitivity adjustment: 80/170%
Resolution: 1/1000 at 20℃
Compensation parameter
Pressure: 500-800mmHg
Salinity: 0- 60,000 PPM
Relative humidity: 0-100%
Temperature
Input signal: 2-wire or 3-wire thermal resistance
Measurement and compensation range: -2 to +52℃
Resolution: ±0.1℃
Zero-degree adjustment: ±2℃
Manual temperature compensation: 0-50℃
Optional accessories
091.3713 Dual analog signal output, the operator can select one of the channels as the temperature output
091.701RS232 interface (Connect to computer)
091.404 24V AC power supply
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