Brand：Erun
Water quality dissolved oxygen (DO) online monitor
Model：ERUN-SZ4-A-A5
Dissolved oxygen DO (fluorescence method)
The instrument's sensor adopts a new generation of fluorescence lifetime technology, with high-performance fluorescent materials developed by Erun Environmental Protection. No oxygen consumption, no flow rate limitation, no electrolyte required, maintenance and calibration free, with excellent stability. Built-in temperature sensor, automatic temperature compensation. Built-in calibration parameters, factory has been accurately calibrated, can be directly installed and used. Widely used in sewage treatment, aquaculture and other industries for water quality dissolved oxygen monitoring.
transducers | ERUN-A5A | ERUN- A5B | ERUN-A5C |
Measurement range | 0～20mg/L，or 0-200% saturated oxygen | ||
accuracy | ±3% | ±1% or 0.3mg/L | |
temperature range | 0~50℃ | ||
protection class | IP68 | ||
sensor interface | RS-485，MODBUS protocol | ||
calibrations | One or two point calibration | ||
Cable Length | Standard 10m, customizable | ||
Maximum water depth | 30m | 60m | Based on customization |
electric power source | DC9~24V，Current >50mA | ||
sizes | Φ22mm*152.7mm | Φ26mm*187mm | Φ26mm*175mm |
Housing Material | 316L/Titanium Alloy | aluminum alloy | 316L |
demonstrate | LED liquid crystal display |
Automatic temperature compensation | 0~60℃ |
signal output | 0～20mA(Load resistance＜750Ω) 4～20mA(Load resistance＜750Ω) |
Power supply | 85～265VAC±10%,50±1Hz，Power ≤3W； 9～36VDC，Power ≤3W |
communication output | RS485 Modbus RTU |
environmental temperature | -10℃~60℃ |
relative humidity | Not more than 90% |
sizes | 144mm*144mm*130mm |
Installation | Recessed (Opening size 138*138mm) |
weights | 0.5kg |
Built-in temperature sensor with automatic temperature compensation; |
No electrolyte required, strong anti-interference, no need for frequent calibrationNo oxygen consumption, no flow rate limitation; |
Digital sensor, RS485 output, MODBUS protocol; |
No oxygen consumption, no flow rate limitation |
Adopt LED LCD display, intelligent Chinese/English menu operation; |
Output signal: software selects 0-20mA or 4-20mA output; |
High-resistance preamplifier: high input impedance, anti-noise, strong anti-interference ability; |
Multi-parameter display on the same screen: Simultaneously display pH (or ORP) value, temperature value, two current outputs and relay working status; |
| Self-set password: Users can set or change their own passwords to avoid misuse by uninvolved personnel. |
