Product Overview

The MOEORWW-6423D SF6 Precision Dew Point Meter integrates imported high-precision dew point sensors to deliver high measurement accuracy and rapid response speed. Equipped with an intuitive full-color touchscreen, the device synchronously displays multiple measurement metrics including dew point, trace moisture, PPMV, gas temperature and flow rate. The lightweight compact structure with a carrying handle supports field outdoor testing, while the built-in large-capacity lithium battery enables long-duration continuous operation without mains power supply. The equipment is designed for trace moisture quantification of SF6 gas in power systems, compressed air, hydrogen in power plants and other industrial process gases, with standardized self-locking quick gas connectors for fast pipeline assembly.

Technical Specifications

Category	Item	Parameter
Measurement Range	Dew Point	-80 ~ +20℃ Td
	Relative Humidity	0 ~ 100% RH
	Gas Temperature	-40 ~ +80℃
Measurement Performance	Dew Point Accuracy	±0.5℃ Td
	Dew Point Resolution	0.1℃ Td
	Temperature Accuracy	±0.5℃
	Humidity Accuracy	±4.5% RH
Response Time (20℃ Ambient)	Dew Point Shift -60→20℃ Td	5s (Stable within 30s)
	Dew Point Shift 20→-60℃ Td	10s (Stable within 300s)
Operating Environment	Ambient Temperature	-20 ~ +50℃
	Ambient Humidity	5 ~ 90% RH
	Recommended Gas Flow	0.5 ~ 0.6 L/min
	Compatible Test Gas	Air, N₂, SF₆
Power Supply	Mains Power	AC 220V
	Built-in Lithium Battery Runtime	≥8 hours
Display Module	Screen Specification	800*480 High-definition Touch Screen
	Display Metrics	Dew point (℃ Td), moisture PPMV, PP20, flow rate, gas temperature
Gas Circuit	Connection Fitting	Copper Self-locking Quick Connector
General Mechanical	Rated Power	＜5 W
	Overall Dimension	414 * 333 * 177 mm

Core Functional Features

Hardware & Design Configuration
1.Built-in automatic calibration module for consistent measurement baseline without external auxiliary equipment; dew point probe self-protection structure to extend sensor service life.
2.800*480 full-color touch human-machine interface for one-touch operation; high-precision electronic flowmeter to stabilize gas intake flow.
3.Dual power supply design: AC220V mains power and rechargeable lithium battery; integrated silent thermal printer for on-site data hardcopy output.
4.Mass storage chip for massive test record storage; USB data export function to generate standardized CSV data files via external U disk.
5.Portable integrated handle, compact metal copper gas joints for reliable air tightness.

Performance Advantages
1.Multi-parameter synchronous real-time display with dynamic dew point curve tracking for continuous monitoring of moisture fluctuation trends.
2.Fast response speed for both high and low dew point conversion, supporting stable low dew point measurement under 0.5–0.6 L/min fixed flow.

Application Value
1.Simplified field pipeline assembly via quick connectors to shorten preparation time for on-site power equipment inspection.
2.Offline data storage, printing and U disk export meet industrial on-site record filing and laboratory data archiving requirements.
3.Lithium battery independent power supply eliminates dependence on industrial mains power for outdoor substation field detection.

Application Fields

Power industry: Trace moisture detection of SF6 gas in circuit breakers, GIS equipment and switchgears

Thermal power plants: Micro-water measurement of hydrogen cooling medium in generator sets

General industrial manufacturing: Trace moisture testing of compressed air and nitrogen production pipelines

Gas inspection laboratories: Quantitative analysis of water content in inert gas samples

Routine Maintenance & Calibration Guidelines

Daily Maintenance
1.Operate the meter within the specified ambient temperature and humidity range; avoid direct sunlight and rain exposure.
2.Keep adequate heat dissipation space for the main unit; prevent dust, corrosive liquid and conductive foreign matter from entering the equipment.
3.Handle the instrument gently to avoid collision and severe vibration; unplug the AC power adapter for long-term idle storage.
4.Adopt stainless steel polished or PTFE gas pipelines; PVC and nylon pipelines with water absorption characteristics are prohibited for low dew point testing.

Calibration Requirements
1.Annual calibration is recommended to maintain specified measurement accuracy.
2.Users can send the device to the manufacturer's calibration service center for professional calibration, with paid calibration services available post-warranty period.
3.Access to system calibration parameters requires authorized technical support password; unauthorized parameter modification is forbidden.

After-sales Service Terms
1.Free repair service is provided for non-human damage within the warranty period; users shall bear the shipping cost for instrument delivery to the factory.
2.Malfunctions caused by unauthorized disassembly, improper operation or man-made damage are covered by paid maintenance services.

FAQ

Q1: Why do inaccurate dew point readings occur during measurement?

A1: Check 4 key items:

1) Complete 5-minute automatic calibration after power-on before recording data;

2) Ensure the exhaust port is not blocked;

3) Replace water-absorbent PVC/nylon pipelines with stainless steel or PTFE tubes;

4) Stabilize gas flow at 0.5–0.6 L/min.

Q2: Can the instrument measure corrosive or toxic gas samples?

A2: Prohibited. The sensor and internal gas circuit are not resistant to corrosive media, which will cause permanent sensor damage and void the warranty.

Q3: How to export historical test data for offline analysis?

A3: Enter the Historical Data page, insert a U disk and tap the USB Storage button; the system automatically generates dewpoint.csv file for data export.

Q4: What is the standard moisture limit for SF6 circuit breaker testing?

A4: 1) ≤150 μL/L for factory, overhaul and handover inspection; 2) ≤200 μL/L for routine operation monitoring; 3) ≤300 μL/L for separate testing of leaky breaking units.

Q5: How long can the built-in lithium battery support continuous measurement?

A5: Over 8 hours under normal operating conditions; connect AC220V adapter simultaneously for charging and power supply during long-duration field tests.

Q6: Is it allowed to disassemble the internal components of the instrument by yourself?

A6: Forbidden. Unauthorized disassembly and circuit modification will invalidate the warranty, and the manufacturer shall not be liable for subsequent equipment failures or safety hazards.

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