(1) instrument features

Thermo Scientific TVA2020C toxic volatile gas analyzer is the only toxic volatile gas analyzer using both flame ionization (FID) and photoionization (PID) dual detector technology. It has the ability to detect both organic and inorganic compounds at the same time. Compared with other instruments of the same volume, it can provide more comprehensive gas coverage. Compared to earlier models, the TVA2020C weighs 21 percent less and is more compact than most single FID instruments. This instrument has the following features:
1、double detector technology with FID/PID
2、bluetooth capability
3、lightweight and compact design
4、simple field operation
5、no PC applications required

2) technical parameters of tva-2020c toxic volatile gas analyzer

Main performance indicators	Technical parameters
The accuracy of	The maximum value of FID was 1.0~10000ppm, plus or minus 10% or plus or minus 0.1 PPM PID from 0.5 to 500ppm, plus or minus 20% or plus or minus 0.5 PPM of the reading, taking the maximum value
repetitive	At 500ppm methane, 2% When PID 100ppm isobutene, 1%
Linear range	FID 1.0 ~ 30000 PPM methane PID 0.5~2000ppm isobutylene
The response time	The FID was injected into 10000ppm methane, and the time to reach the final value was less than 3.5s PID was injected into 500ppm isobutylene, and the time to reach the final value was less than 3.5s
Sampling flow	At the entrance of the sampling probe, it is generally 1L/min
The battery	When 0 ℃, can work continuously at least 10 hours. The battery is fully charged for less than 10 hours
Hydrogen bottle working hours	Start with cylinder pressure of 15.3Mpa(2,200Psi) and work continuously for more than 10 hours
weigh	Single FID detector 4.17kg Dual detector 4.26 kg
Working environment temperature	-10℃~45℃
Minimum detection limit	The minimum detection limit is calculated by the standard deviation of noise between seven peaks PID 0.5 PPM isobutylene FID 0.5 PPM methane
life	PID routine cleaning, over 2000 hours More than 5,000 hours of FID
Data storage interval	Automatic mode 1 time/second or 1 time /999 minutes, user can choose VOC or FE mode, 2~30 seconds, user optional
Working relative humidity	15%~95%
voltage	220VAC 50/60Hz
Duration of field work	With spare gas cylinders and external power supply, it can work continuously for more than 50 hours
Storage function	The machine has data storage function, which can save no less than 9000 data