Huazheng Electric HZGC-1212A Gas Chromatograph Instrument

The traditional gas chromatograph works with 1 chromatograph, 1 workstation, 1 computer and 1 printer. This working arrangement makes it inconvenient for users in chemical plants, laboratories, and educational institutions, as they require multiple devices for operation and management, leading to duplicated investments and significant wastage. Equipped with a large number of computers also bring a lot of inconvenience to users in equipment management and data management. At the same time, this traditional mode often uses a manufacturer's gas chromatograph, and another manufacturer's workstation can be used, making the overall function of the system difficult to play, the performance of the system is difficult to improve, and it is impossible to talk about the increase of functions proposed by the user (such as remote transmission of data, monitoring of multiple instruments, etc.).

In view of the drawbacks of the use of this traditional gas chromatograph, the application of decades of development results, the adoption of a new industrial design, the current mainstream network communication technology applied to the gas chromatograph, the development of a new type of gas chromatograph with international advanced technology. The instrument adopts the latest highly integrated industrial-grade chip, bus technology, Ethernet technology, micro-flow gas control technology and data processing software to optimize the precision of temperature control and gas control, which fundamentally improves the reliability of the instrument.

The HZGC-1212A type gas chromatograph incorporates network communication technology and a built-in high-precision AD conversion circuit, enabling multiple chromatographs to use a single computer to perform data analysis, printing, and storage. It also provides remote control of the instrument and long-distance transmission of chromatographic data, facilitating real-time tracking and management of product quality by business managers.

Features of HZGC-1212A Gas chromatograph:

★ It adopts advanced technology of 100Mbps/1000Mbps Ethernet communication interface and built-in IP protocol stack, enabling the instrument to achieve long-distance data transmission through the enterprise's internal LAN and the internet; facilitating laboratory setup, simplifying laboratory configuration, and convenient data management.

★ The instrument is internally designed with three independent IP addresses, which can be connected to the workstation (at the laboratory site), dedicated computers (such as quality inspection department, production department), and executive computers (such as environmental protection bureau, technical supervision bureau). Real-time monitoring of instrument operation and analysis data results is possible.

★ The dedicated workstation equipped with the instrument can simultaneously support multiple chromatographs for data processing and instrument reverse control, simplifying document management.

★ The instrument can be connected to the manufacturer via the internet, enabling remote diagnostics, remote updates, etc. (user configuration required).

★ The instrument is equipped with an 8-inch color LCD touchscreen, supporting hot swapping and can be used as a handheld controller.

★ The instrument operates in parallel with multiple processors, making it more stable and reliable. It can be optionally equipped with a variety of high-performance detectors such as FID, TCD, ECD, FPD, and NPD, with a maximum installation of three detectors simultaneously to meet the analysis requirements of complex samples.

★ The instrument adopts a modular design structure, making it easy and convenient for maintenance.

★ The new microcomputer temperature control system provides high temperature control accuracy, superior reliability, and anti-interference performance. It has eight completely independent temperature control outputs, enabling sixteen-step program heating. It also features an automatic back-opening system for the column oven, improved near-room temperature control capability, and faster temperature ramp rates.

★ The chromatograph has a built-in low-noise, high-resolution 24-bit AD circuit, with baseline storage and subtraction functions.

★ The standard workstation is suitable for operating systems such as WinXP, Win2000, Win7, Win8, Win10.

★ The chromatograph's microcomputer system with fully independent intellectual property rights has the standard MODBUS/TCP protocol and can be integrated with DCS systems.

Main technical specifications:

● Operation display: 8-inch high-definition color LCD touchscreen, can be used as a handheld controller.

● Temperature control zones: 8.

● Temperature control range: 4℃ to 450℃ above room temperature, increment: 1℃, accuracy: ±0.1℃.

● Program temperature ramp stages: 16 stages (expandable).

● Temperature ramp rate: 0.1 to 60℃/min.

● Gas flow control: Precision mechanical valve flow control.

● External events: 8 channels; auxiliary control outputs: 2 channels.

● Sampler types: Packed column injection, capillary injection, six-port valve gas injection, automatic sampler.

● Number of detectors: 3 (maximum); options include FID, TCD, ECD, FPD, and NPD.

● Injection initiation: Manual or automatic (optional).

● Communication interface: Ethernet: IEEE802.3.1.3.2 Detector technical specifications

1. Hydrogen Flame Ionization Detector (FID)

● Detection limit: ≤5×10-12g/s(cetane/isooctane)

● Baseline noise: ≤0.05PA

● Baseline drift: ≤0.2PA/30min

● Linear range: ≥106

2. Thermal Conductivity Detector (TCD)

● Sensitivity: S≥10000mV•ml/mg(benzene/toluene) (with amplification 1, 2, 3, 4 times optional)

● Baseline noise: ≤20μV

● Baseline drift: ≤30μV/30min

● Linear range: ≥104

3. Electron Capture Detector (ECD)

● Detection limit: ≤1×10-13g/ml (propyl BHC-isoctane solution)

● Baseline noise: ≤0.03mV

● Baseline drift: ≤0.2mV/30min

● Linear range: 103

● Radioactive source: 63Ni

4. Flame Photometric Detector (FPD)

● Detection limit: (S)≤5×10-11g/s,

(P)≤1×10-12g/s; (methyl parathion - anhydrous ethanol solution)

● Baseline noise: ≤3×10-13A

● Baseline drift: ≤2×10-12A/30min

● Linear range: ≥102 for sulfur, ≥103  for phosphorus

5, nitrogen and Phosphorus detector (NPD)

● Detection limit: (N)≤5×10-13g/s,

(P)≤5×10-13g/s; (methyl parathion - anhydrous ethanol solution)

● Baseline noise: ≤5×10-13A

● Baseline drift: ≤2×10-12A/30min

● Linear range: N ≥102, P ≥102