RG-AWS5 Fully Automatic Constant Temperature and Humidity Weighing System

RG-AWS5 Constant Temperature and Humidity Automatic Weighing System

Product Overview

The Constant Temperature and Humidity Automatic Weighing System is a fully automated intelligent system that performs sample handling, sample identification, electrostatic removal, and weighing within a high-precision constant temperature and humidity chamber. This system overcomes weighing errors caused by temperature and humidity variations, corner deviations, and human errors during the weighing process. It can automatically weigh various samples such as filter membranes, filter cartridges, and low-concentration sampling heads. Weighing data can be automatically calculated, stored, queried, and exported, and presented in tabular form. It features a high degree of automation and accurate data. The entire weighing process strictly complies with standards such as HJ 618-2011, HJ 656-2013, and HJ 836-2017. It is a core device for weighing samples in atmospheric and pollution source sampling, suitable for projects like atmospheric PM2.5/PM10 monitoring, source apportionment, and ultra-low emission monitoring.

Workflow

Load samples → Balance for 24 hours → Calibrate sample weighing → Start sample retrieval → Scan barcode → Remove static electricity → Balance the scale → Weigh and read → Data storage → Return samples → Weigh next sample

Main Features

Complies with the quality control requirements for particulate sampling standards specified in national standards HJ 618-2011, HJ 656-2013, and HJ 836-2017 "Determination of Low-Concentration Particulate Matter in Stationary Source Emissions by Gravimetric Method."

Capable of weighing 47mm filter membranes, 90mm filter membranes, No. 3 filter cartridges, low-concentration sampling heads, and filter membranes of any diameter between 28mm and 47mm.

Utilizes anti-shake and anti-slip technologies during sample transportation.

Sample placement areas are gold-plated to effectively discharge static electricity, with anti-static coating applied to the outer edges.

Samples feature human-readable numeric codes and system-readable barcodes, integrating samples and their IDs to prevent separation. The system can automatically read sample IDs.

Automatically performs ion wind static removal before weighing.

The system includes a calibration membrane weighing function.

The balance features automatic range and zero-point calibration.

The robotic arm has automatic detection and correction for minor deviations, as well as automatic protection against hard object obstructions.

The system has power failure memory; the robotic arm automatically returns to its origin after a power outage.

No need to change sample trays when weighing different samples; samples can be placed at any position.

The balance wind shield has excellent sealing to ensure the balance remains undisturbed.

The balance wind shield automatically opens and closes during the weighing process and includes automatic protection against hard object obstructions.

The balance employs multi-level shock absorption measures, including buffer damping, shock absorbers, and marble counterweights, to reduce vibration frequency.

An air purification device is installed in the constant temperature and humidity chamber to meet user requirements for cleanliness.

The system has remote communication capabilities for remote data monitoring, email notifications, and data export via xls files.

The system uses either a closed-loop internal water circulation system or purified tap water as water supply modes.

The system includes automatic alarms for mechanical faults and low water levels in the tank.

The main chassis is equipped with self-locking casters for easy movement and fixation.

Technical Specifications

1. Temperature

Temperature control: 15°C to 30°C, settable at any point (factory default: 20°C)

Temperature resolution: ±0.1°C

Temperature control accuracy (fluctuation range): ±0.2°C

2. Humidity

Humidity control: 30% RH to 70% RH, settable at any point (factory default: 50% RH)

Humidity resolution: ±0.1% RH

Humidity control accuracy (fluctuation range): ±0.5% RH

A calibration report for the temperature and humidity chamber from a metrology department is provided upon delivery.

3. One-Hundred-Thousandth Balance

Range: 0 to 41g

Resolution: 0.01mg

Repeatability: ≤±0.02mg

Linearity: ≤±0.05mg

Calibration methods: Internal calibration, external calibration

A verification report for the balance from a metrology department is provided upon delivery.

4. Robotic arm mechanical repeatability error ≤0.01mm

5. Software features: Dedicated weighing system software; manual loading and unloading of samples on the disc with recording and input functions; software supports manual balance calibration; the system can judge data validity based on set parameters and manage data;

Complies with the requirements of national standard HJ 836-2017 "Determination of Low-Concentration Particulate Matter in Stationary Source Emissions by Gravimetric Method," automatically generating filter membrane balance and weighing record forms (HJ 656-2013) and standard filter membrane weighing record forms (HJ 656-2013).

6. Sample static removal time can be set according to customer requirements.

7. Power supply: AC220V, 50Hz; operating power: ≤1kW

8. Airflow in the constant temperature and humidity chamber does not affect sample storage, retrieval, or movement.

Structural Specifications

1. Overall structure: Constant temperature and humidity chamber group, mechanical control cabinet, refrigeration unit (external). The system has proper grounding and grounding labels, with shock absorbers for vibration reduction.

2. Power distribution control cabinet: Robotic arm power system and constant temperature and humidity power system are independent to prevent electromagnetic interference; equipped with UPS.

3. Constant temperature and humidity chamber: Insulated enclosure (soundproof, low vibration); inner chamber material: 304 stainless steel; view window: large transparent glass window.

4. Air conditioning channel: Two axial fans, heater, condenser, humidifier.

5. Chassis configuration: Four self-locking casters for easy movement and fixation.

6. Air circulation system: The system includes distributed heating tubes, condensers, fans, etc. When the fan is on, air from the workspace is drawn into the circulation system from the lower intake, mixed with heat, cold, and humidity generated by the heater, condenser, and humidifier. The air, after heat and humidity exchange, is drawn into the air duct and enters the workspace from the upper outlet, circulating repeatedly to ensure temperature and humidity stability and uniformity.

7. Heater: Nickel-chromium alloy electric heating wire high-speed heater.

Heater control method: Non-contact equal-period pulse width modulation SSR solid-state relay, synchronized system control for improved stability of control components and interface. Independent system, does not affect the cooling system or control circuits.

8. Humidifier: Stainless steel humidifier; when water is low, the system automatically activates the pump to draw water.

Control method: PID control.

Water level control device: Heater dry-burn protection.

Safety Protection Features

1. Refrigeration system: Compressor overpressure protection, compressor motor overheating protection, compressor overcurrent protection.

2. Constant temperature and humidity chamber: Overtemperature protection, low water protection, air conditioning channel overtemperature protection, circulation fan overheating protection.

3. Others: Leakage protection, overload protection, load short-circuit protection.

Configuration (Standard):

Standard: Main unit, shock absorption system, compression refrigeration unit, system software and sample ID recognition, static removal module, automatic wind shield, two sets of sample trays, air purification device, water purification device, camera, automatic sample drop detection and protection system.

Weighing objects: φ47mm filter membranes, No. 3 filter cartridges, low-concentration sampling heads; quantity: 120 positions. Or weighing objects: φ47mm filter membranes; quantity: 720 positions.

Qingdao Rongguang Electronic Technology Co., Ltd. provides technical support and comprehensive after-sales service for this instrument!