The GC3900E new touch wide range gas chromatograph has high sensitivity for detecting trace and trace samples in increasingly complex air environments. It adopts mainstream IP communication technology, is equipped with fully automatic EPC/AFC electronic flow control technology, and comes standard with a wide range logarithmic amplification system. The modular assembly structure facilitates customer customization and personalized needs for trace substance detection in the factory.

Main performance characteristics:

Color graphic touch screen display:

This machine adopts a 7-inch touch screen LCD display, which dynamically displays graphics

Complete temperature control system and self diagnostic function:

Transmission communication function:

Adopting 10/100 adaptive Ethernet IEEE802.3 communication interface, with fast transmission speed.

Multi channel network workstation:

Sensitivity hydrogen flame ion detector:

Adopting high-temperature stainless steel nozzle, suitable for capillary and packed column analysis, using low-noise wide range logarithmic amplifier, the system is stable and durable for most organic compound response values.

Gas Pressure/Flow Electronic Control Module (EPC/AFC)

The gas pressure/flow electronic control module EPC/AFC used in this instrument completely replaces traditional manual pressure/flow control systems, providing users with a flexible and intelligent fully automatic pressure/flow control system.

The internal air circuits of the instrument are individually controlled, and each channel can replace manual pressure control valves, pressure stabilizing valves, flow stabilizing valves, back pressure valves, needle valves, air resistance valves, and proportional valves. The product has excellent resolution and control performance. At the same time, the device dynamically compensates for external pressure and temperature to achieve output. In addition, users can switch between high and low flow rates by changing the air resistance of the outlet.

The instrument is equipped with pressure and flow control modules that can automatically adjust the outlet pressure changes, overcoming the problem of traditional mass flow meters being unable to accurately control under outlet pressure. Users only need to input the parameters of the chromatographic column, and EPC/AFC can automatically calculate and set the pre column pressure and chromatographic column flow rate. The entire instrument is automatically controlled throughout the process without manual adjustment

Main technical parameters:

1. Technical parameters for gas path control of injection system:

SSL diversion without diversion: constant current mode/constant voltage mode/pulse

PIP filling column system: constant current mode/constant pressure mode

Gas flow range; 0-1000ml/min(He,H2）0-200ml/min(N2,AIR,CH4)

Split ratio: large adjustable 7500:1 Diaphragm blowing: available

Accuracy of pressure sensor: ＜ ± 2%

Repeatability of pressure sensor: ＜ ± 0.15%

2. Technical parameters for gas path control of the detection system:

FID detector EPC: Gas (H2) 0-100ml/min, Auxiliary Gas (Air) 0-800ml/min, Tail Gas (N2/He) 0-100ml/min

TCD detector EPC: carrier gas (H2, He, N2) 0-100ml/min

FPD detector EPC: Gas (H2) 0-250ml/min, Auxiliary Gas (Air) 0-150ml/min, Tail Gas (N2/He) 0-150ml/min

ECD detector EPC: Carrier gas (He, N2) 0-150ml/min

NPD detector EPC: Gas (H2) 0-200ml/min, Auxiliary Gas (Air) 0-50ml/min, Tail Gas (N2/He) 0-100ml/min

AUX auxiliary gas EPC: pressure mode (optional air resistance), supports 3-stage program boosting

Module channel: FID/FPD/NPD/AUX EPC 3-channel

TCD EPC 2-channel

ECD EPC 1 路

Input pressure range: 0-150psi

Accuracy: ＜ ± 2%

Repeatability: ＜ ± 0.15%

Display mode: 7-inch touch screen LCD display

Temperature control area: 8-way temperature control

Temperature control accuracy: ± 0.1 ℃ - ± 0.2 ℃

Temperature control range: Room temperature ± 8 ℃ -450 ℃, with increments of 1 ℃

Program heating: 16 stage program heating, heating rate 0.1-40 ℃/min, with increments of 0.1 ℃,

Initial and termination time range: 0-6000min, with increments of 1min.

Extreme temperature: protection value 450 ℃

External events: 8-channel external events can be equipped with solenoid valves, etc; Auxiliary control air circuit 2

Communication interface: Ethernet, IEEE802.3;

Start injection: manual and automatic

Power supply: 220V 50HZ 2000W

Technical specifications of detector

Hydrogen flame ionization detector (FID)
Detection limit: Mt ≤ 5 × 10-12g/s (n-hexadecane-isooctane solution);
Noise: ≤ 5 × 10-14A
Drift: ≤ 1 × 10-13A/30min
● Linear range: ≥ 106

Thermal conductivity detector (TCD):
Sensitivity: S ≥ 5000mV • ml/mg (conventional)

8000mV • ml/mg (highly sensitive) (benzene toluene solution)
Noise: ≤ 10 μ V
Baseline drift: ≤ 30 μ V/30min
● Linear range: ≥ 104

Electron Capture Detector (ECD):
Detection limit: ≤ 1 × 10-14g/s
Noise: ≤ 0.03mV
Baseline drift: ≤ 0.2mV/30min
● Linear range: ≥ 103
● Radioactive source: 63Ni

Flame photometric detector (FPD):
Detection limit: (S) ≤ 5 × 10-11g/s, (P) ≤ 1 × 10-12g/s;
Noise: ≤ 0.03mV
Baseline drift: ≤ 0.2mV/30min
● Linear range: ≥ 103 (S), 102 (P)