KNF-1500 Handheld Multi Parameter Water Quality Detector with 5 Titanium Alloy Sensors IP68 RS-485

1. Product Introduction

    The KNF-1500 is a portable handheld multi-parameter water quality detector designed for field measurement of dissolved oxygen, pH, ORP, conductivity, salinity, TDS, turbidity, temperature and more. The handheld meter supports up to 4 sensor inputs that can be freely combined, and each sensor is automatically recognized by the meter once connected, so operators can switch measurement parameters on site without reconfiguration.

A backlit LCD, short-cut interfaces, a simple operation keypad, convenient calibration procedures, rechargeable batteries, large log memory and the powerful PC data program (Meter Read) make the instrument user friendly for environmental monitoring, aquaculture, municipal water supply and drainage, and industrial wastewater testing.

    The dissolved oxygen sensor adopts internationally leading fluorescence lifetime technology, which is based on the quenching principle of specific substances to active fluorescence in physics. The remarkable advantage of this optical method is that it does not consume oxygen during measurement, so there is no flow rate limit, no need to preheat electrolyte and no need for frequent maintenance or calibration. The response time is as low as 30 seconds, making dissolved oxygen measurement more accurate, more stable, faster and more convenient.

2. Key Features

• Handheld portable design: up to 5 parameters measured simultaneously, sensors recognized automatically by the meter.
• Fluorescence lifetime dissolved oxygen sensor: no oxygen consumption, no flow rate limit, 30 s response time.
• Titanium alloy sensor bodies with PEEK / POM / 316L wetted parts for long term corrosion resistance in fresh, brackish and waste water.
• IP68 submersible sensor unit with detachable handle and protective cover; IP67 protection for the handheld meter.
• RS-485 output with MODBUS protocol for direct integration into data acquisition platforms.
• Backlit 54.38 mm LCD, large log memory and Meter Read PC data program for data export and analysis.
• Built-in barometric pressure compensation, automatically compensating from 50 to 115 kPa.
• 2 x D-size batteries in the sensor unit and 2 x 18650 rechargeable batteries in the meter for long field working time.
• 5 m cable supplied as standard, custom lengths available on request.

3. Technical Specification

3.1 Sensor Main Unit Configuration

3.2 Detector Main Unit Configuration

3.3 Sensor Parameters

4. Applications

• Surface water and river water quality surveys
• Aquaculture and fishery pond monitoring
• Municipal water supply, drainage and sewage treatment plants
• Industrial wastewater discharge testing and environmental compliance checks
• Emergency response and mobile field sampling programs

5. Ordering Information

Model KNF-1500 portable handheld multi-parameter water quality detector. Please advise the required sensor combination (pH / ORP / DO / conductivity / turbidity / temperature / oil in water / chlorophyll / blue-green algae / ammonia nitrogen / depth) and the cable length when ordering. OEM and customized sensor configurations are available.