Eco Physics CLD 780 TR - Page 13

E C O P H Y S I C S Specifications
CLD 780 TR / July 2000 10
2.1 CLD 780 TR Performance data (O
2
operation)
Measurement range 0.005 - 5 ppb
0.01 - 10 ppb
0.05 - 50 ppb
0.1 - 100 ppb
0.5 - 500 ppb
In each range the signal integration in-
terval can be varied in 0.1 sec steps
from 0.1 to 999 sec.
Zero-point noise, 1
σ
< 0.025 ppb
1)
Signal noise, 1
σ
< 0.5 % of signal or zero-point
noise whichever is greater
1)
Detection limit, ± 1
σ
< 0.05 ppb
1)
< 0.01 ppb
2)
Interference NH
3
: < 1
(in % NO equivalent) SO
2
: below detection limit
water vapor: 1 vol% water vapor
in sample reduces measured NO
value by at most 8 %
Zero-point drift negligible
Rise time < 1 sec (combined pneumatic and
electronic response times for signal
to reach 95 % of end value after a
step change in NO concentration)
Fall time < 1 sec (see Rise time)
Delay time < 1 sec in “Continuous” mode
(see Section 5.2.2.2 Window 3)
≈
4 sec in “NO” or “NO.c” mode,
with signal integration interval of 1
sec (see Section 5.2.2.2 Window
3)
Linearity within range ± 1 % of full scale
1)
signal integration interval 3 sec and O
2
operation
2)
signal integration interval 60 sec and O
2
operation