Once the canister is in place on the instrument, the flow rate is controlled by the atmospheric pressure differential. The sample enters the canister and the sample is collected. Its instantaneous sampling and constant current sampling modes are switched as required.
EXPEC 271
Features
Various sampling modes Unique flow path design, when the environmental concentration exceeds the threshold, instantaneous sample retention is completed within 60 seconds; constant flow sampling is also available, with a flow rate of 0.2~500mL/min, meeting the sampling time requirements of HJ 759
Dual channel design Dual channels can be turned on at the same time to achieve parallel sampling, or when one channel is sampling, the other channel can be replaced to achieve no blind spot sampling
Leak-proof design When the instrument is on standby, the rotary valve is in a closed state to prevent micro-leakage in the flow path, which may cause changes in the vacuum degree of the canister. canister pressure drop ≤0.01kPa/day, ensuring data quality
Low adsorption design All flow paths are inertized and heat-traced, resulting in low adsorption, low residue, and low cross-contamination.
Software friendly Android system, easy to operate and refreshing interface
Support optional Standard configuration is 8 sampling bits, which can also be expanded to 16 sampling bits
Automated leak detection Leak detection through negative pressure of canister
Data traceability A code scanner can be configured to bind the sampling information to the canister to facilitate traceability from sampling to injection.
Application
Can be used with Pre 4000
Environmental monitoring, emergency monitoring, occupational health, public health, scientific research.
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