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Handheld Multi-Parameter Water Quality Sensor
This handheld multi-parameter sensor measures pH, ORP, optical dissolved oxygen, conductivity, turbidity, temperature, and salinity, with key ranges: dissolved oxygen 0–20 mg/L or 0–200% air saturation (±1%), turbidity 0.1–1000 NTU, pH 0–14 (±0.1), and RS-485 MODBUS output. It is suitable for portable water quality monitoring and field measurement of up to 5 parameters.
- Dissolved Oxygen Accuracy
- ±1%
- Dissolved Oxygen Range
- 0–20 mg/L or 0–200% air Sat
- Power Supply
- DC 5–12V, current <50mA
- Turbidity Range
- 0.1–1000 NTU
- Measures up to 5 parameters with automatic sensor recognition by handheld meter
- Optical DO sensor has no flow rate limit and no electrolyte preheating
- Response time of optical dissolved oxygen probe is as low as 30 seconds
- Backlit display, simple keyboard, rechargeable battery, large log memory and PC data program
- Built-in pressure compensation from 50 to 115 kPa
- Data storage and regular shutoff supported
Specifications
SZ4001 technical data
| Parameter | Value |
|---|---|
| Dissolved Oxygen Range | 0–20 mg/L or 0–200% air Sat |
| Dissolved Oxygen Accuracy | ±1% |
| Turbidity Range | 0.1–1000 NTU |
| Turbidity Accuracy | ±5% or ±0.3 NTU (Take the larger value) |
| Conductivity Range | 0.01–5 mS/cm or 0.01–100 mS/cm |
| pH Range | 0–14 |
| pH Accuracy | ±0.1 |
| Temperature Range | 0–50 °C |
| Temperature Accuracy | ±0.2 °C |
| Sensor Interface | Supports RS-485, MODBUS protocol |
| Power Supply | DC 5–12V, current <50mA |
| Sensor IP Rating | IP68 |
Applications
Where the SZ4001 is used
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
SZ4001 Handheld Multi-Parameter Water Quality Sensor
Sales engineer replies within 12 hours
Or WhatsApp +86-15958288207
SZ4001 questions
What ranges are available for the SZ4001?
What is the MOQ and lead time?
Can the SZ4001 be customized?
Do you manufacture this transmitter?
Need the right handheld multi-parameter water quality sensor for your process?
Send the medium, range, output, and quantity. We will confirm the matching option and a FOB Ningbo quote.




