SZ504-A
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- CE & EMC Certified
- 12-Month Warranty
- Reply Within 12 Hours
Environmental & Water Quality Sensors
SZ504-AWater Monitoring
Online Dissolved Oxygen Sensor
Online dissolved oxygen sensor measures dissolved oxygen from 0–20 mg/L or 0–200% saturation with ±1% accuracy and communicates via RS-485 Modbus. It uses fluorescence quenching technology with automatic temperature compensation, no oxygen consumption, and no H2S interference. It is designed for continuous online water quality monitoring and requires low maintenance.
- Accuracy
- ±1%
- Measuring Range
- 0–20 mg/L or 0–200% saturation
- Sensor Interface
- RS-485, MODBUS protocol
- Power
- 0.1 W (DC 9–24 V, >50 mA)
- Membraneless, no electrodes design
- No oxygen consumption, No H2S Interference
- Automatic temperature compensation
- Low Drift, fast response, and more accurate
- RS-485; MODBUS protocol compatible
Specifications
SZ504-A technical data
| Parameter | Value |
|---|---|
| Measuring Range | 0–20 mg/L or 0–200% saturation |
| Accuracy | ±1% |
| Sensor Interface | RS-485, MODBUS protocol |
| Power | 0.1 W (DC 9–24 V, >50 mA) |
| Construction | G3/4 thread |
| Sensor Housing Material | Titanium alloy |
| Housing IP Rating | IP68 |
| Response Time | 20 sec |
| Temperature Range | 0–50 ℃ |
| Maximum Water Depth | 60 m |
| Probe Cable Length | 10 m (default), customizable |
| Sensor Size | Φ26 mm × 187 mm (with protective cover) |
Applications
Where the SZ504-A is used
Water quality
Aquaculture
Smart agriculture
Weather stations
Environmental monitoring
Ordering
Terms & how ordering works
- MOQ
- 1 pc (flexible, no minimum for most products)
- Lead time
- 2-3 days for in-stock items, 15-30 days for custom orders
- Warranty
- 12-month warranty on all products
- Shipping
- FOB Ningbo / CIF available
- 01
Send Requirements
Medium, range, output and quantity.
- 02
Quote in 12h
Matched model, price and lead time.
- 03
Pre-shipment Check
Every unit inspected against spec.
- 04
Ship FOB / CIF
Export documents handled for you.
Request a Quote
SZ504-A Online Dissolved Oxygen Sensor
Sales engineer replies within 12 hours
Or WhatsApp +86-15958288207
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SZ504-A questions
What ranges are available for the SZ504-A?
Standard coverage is 0–20 mg/L or 0–200% saturation. Other spans, outputs, and process connections can be sourced to match the application. Send the working pressure and medium and we will confirm the exact option.
What is the MOQ and lead time?
1 pc (flexible, no minimum for most products). 2-3 days for in-stock items, 15-30 days for custom orders. Samples are available, with freight on the buyer’s account.
Can the SZ504-A be customized?
Range, output signal, process connection, cable length customizable through our supply partners.
Do you manufacture this transmitter?
SIBXSUN is an industrial instrumentation supplier in Ningbo, not the factory. We source the SZ504-A from qualified partners, inspect before shipment, and handle export documents and logistics.
Need the right online dissolved oxygen sensor for your process?
Send the medium, range, output, and quantity. We will confirm the matching option and a FOB Ningbo quote.
