Instrument introduction:

Technical parameters:

Temperature control
Temperature control range: 7 at room temperature ℃~400℃（Increment 1 ℃）
Temperature control objects: column box, detector, thermal conductivity pool, sampler, auxiliary
Level 5
Range rate: 0.1 ℃~40℃/min（ Increment 0.1 ℃）
Constant temperature time: 0 ~655min（ Increment 1 min）
Hydrogen flame ionization detector ( FID）
Sensitivity: M≤1×10-11g/s(C16)
Best test results: M≤5×10-12g/s(C16)
noise: ≤5×10-14A
drift: ≤6×10-13A/h
Linear range: ≥106
Thermal conductivity detector ( TCD）
Sensitivity: ≥2500mV﹒mL/mg(C16)
noise: ≤20µV
drift: ≤30µV/h
Maximum sensitivity: ≥10000mV﹒mL/mg（ Optional electronic amplifier board)
Linear range: ≥104
Flame photometric detector ( FPD）
Detection limit: ≤1×10-11g/s(P)
               Sample: Methyl parathion 
               ≤1×10-10g/s(S)
              Sample: Methyl parathion
Electronic capture detector ( ECD）
Detection limit: ≤2×10-13g/s(r-666)
Linear range: ≥103
Maximum service temperature: 350 °C
Nitrogen and phosphorus detector ( NPD）
Detection limit: ≤5×10-12g/s(N)
               Sample: Azobenzene
                ≤5×10-13g/s(P)
               Sample: Malathion

Main features:

High-precision dual stable gas circuit
The carrier gas flow path adopts a double stability design of pressure stabilizer valve and flow stabilizer valve； The air and hydrogen flow path adopt a stable adjustment mode of the pressure stabilizer valve and needle valve. The flow stabilizer valve and needle valve both use digital scale knobs, which have the characteristics of high accuracy, good repeatability, high reliability and convenient and intuitive flow adjustment.
High-performance large-capacity column box
Large capacity column box is easy to install and can accommodate both capillary columns and double-filled columns； The column box has rapid heating and rapid cooling, that is, automatic rear door opening mechanism, and can achieve quasi-room temperature control, and the column box program heats up to 5th level 6 platform.
Flexible sampling system to meet various analytical requirements
The instrument can be installed at the same time as up to three samplers. According to the analysis requirements, the instrument can choose the best sampler combination, and each unit can independently control the temperature, making the sampler easy to disassemble and assemble.
Single-filled column /Double-filled column injector:
Can realize the injection method of filling column column heads, suitable for a variety of chromatographic columns； Added six-way valve for gas injection analysis ； Use couplings in fill column sampler for easy completion of 0.53 mm Wide diameter capillary column analysis.
There are 3 types of capillary column injection systems, all suitable for capillary columns of various specifications:
a） Use couplings to convert into capillary column injectors on double-filled column injectors, backpressure valve shunt adjustment；
b） Special capillary column injector with diaphragm purge and backpressure valve shunt adjustment.
c） Special capillary column shunt /Split-free sampler, independent carrier gas flow path and tail blowing air flow, with diaphragm purge and back pressure valve shunt adjustment, imported cleaning solenoid valve, capillary column shunt is realized by preparing time program /Injection without diversion.
Advanced microcomputer system, excellent control functions
1、The microcomputer temperature control system with excellent performance adopts international advanced control technology, with high temperature control accuracy (better than ±0.05℃）、High reliability and strong anti-interference ability； With 5 independent temperature control zones, the maximum temperature control is 400 ℃；Extreme temperature setting and overtemperature protection function ensure the safe operation of the instrument.
2、All Chinese keyboards set various control and usage parameters (including detector operating parameters), which are highly logical and easy to operate； The instrument has functions such as self-diagnosis, power off protection, 10 methods of file storage and call, 2 external event control, temperature control timing start and shutdown, time program, detector setting, range, polarity and current setting and display, etc., and can accurately display the temperature control set values, actual values, retention and analysis time, etc.
High sensitivity and high stability detector
The instrument can be equipped with up to 3 detectors at the same time, such as FID、TCD、ECD Detectors, etc.
Different combinations are adopted according to different analysis applications, which can easily realize the series and parallel operation of the detectors.
New FID It has lower detection limits, and can easily disassemble and clean the nozzle and ion collection components. The precisely fixed emitter installation structure ensures a high degree of consistency in the performance of each instrument.
High sensitivity TCD High resistance value rhenium tungsten wire, the sensitivity can be as high as 10,000 after optional thermal conductivity amplification plate mV•mL/mg， Unique air insulation structure makes TCD It has higher stability.
Modulation pulse type ECD Constant current source, sensitivity and current selection microcomputerization.