Low humidity dew point meter

Product Introduction

NK-300 series intelligent dew point meterLow humidity dew point meterAdopting imported thin-film capacitive dew point sensors, with high accuracy, fast response speed, and rich interfaces; It can provide accurate and reliable measurement results, measure trace moisture content in various gases, and is suitable for various online analysis scenarios with strict control requirements for moisture content.

In the production process of lithium batteries, during the injection of electrolyte, LiPF 6 is present in the electrolyte, which produces hydrogen fluoride (HF) when exposed to moisture. The corrosiveness of HF can corrode the dew point meter probe and reduce the lifespan of the dew point meter. In battery production, the changes in dew point humidity values of the manual control box and drying room depend on the normal operation of the drying equipment. During the feeding and retrieving process of the control box, some dew point meters have insufficient sensitivity, which brings a lot of trouble to quality management. However, our dew point meter adopts imported dew point sensors, which can quickly reflect the true dew point of the space gas. The low dew point meter is particularly suitable for measuring various types of acidic and alkaline gases, such as hydrogen gas SF6、 Carbon dioxide, methane, carbon monoxide, and oxygen do not affect.

Low humidity dew point meterTypical industry applications:

Air purification and clean room, lithium battery production, petrochemicals, natural gas, industrial gases, semiconductor industry, drying industry, food industry, power industry, machinery manufacturing, air separation industry, pharmaceutical industry. Especially suitable for compressed air, nitrogen, helium SF6、 Measurement of trace moisture in gases such as hydrogen, oxygen, carbon dioxide, methane, propane, etc.

Product Features:

1. Imported sensors are selected, which have the characteristics of long lifespan, good stability, high accuracy, and fast response

2. Dot matrix LCD display, selectable to display unit dew point temperature, volume ratio (ppm/v), absolute humidity (mg/m3)

3. Automatic real-time recording of measurement data (≤ 3000 records), displayed in the form of a list or curve

4. Customizable control points, passive relay output, standard 4-20mA and RS485

5. Rich interfaces, capable of connecting to DCS and communicating with computers

6. Special gas path and program design, sensor sealing protection, stable overall performance

7. The whole machine has high cost-effectiveness, with imported core sensors to ensure accurate analysis results, and other components made of domestically produced parts with quality not lower than imported products. After the complete set, the price of the whole machine is significantly reduced compared to imported instruments.

Technical Specifications:

Analysis principles: thin film capacitor, electrolysis method, laser

Range:

> Thin film capacitors: -80 ℃ \ \ -100 ℃ \ \ -110 ℃ -20 ℃, -60 ℃ -60 ℃

>Electrolysis method: 0-2000ppm (intermediate range can be customized)

Accuracy:

> Thin film capacitor: ≤± 2 ℃

> Electrolysis method: ≤± 5% F.S

Repeatability:

> Thin film capacitor: ≤± 1.5 ℃

> Electrolytic method: ≤± 0.5% F.S

Stability:

> Thin film capacitor: ≤± 2% F.S/7d

> Electrolysis method: ≤± 2% F.S/7d

Response time:

> Thin film capacitor: T90 ≤ 60 seconds

> Electrolysis method: T90 ≤ 10min

Note: Depending on the sampling distance

Working environment: Temperature range of -25 ℃ to+55 ℃; Humidity ≤ 90% RH (no condensation)

Sample gas pressure: 0.05 MPa ≤ inlet pressure ≤ 0.1 MPa (outlet must be at atmospheric pressure)

Sample gas flow rate:

> Thin film capacitor: 1500 ± 2500ml/min

> Electrolysis method: 100ml/min