Instruction manual

NGA 2000 MLT Hardware
TECHNICAL DATA
20 - 4
Emerson Process Management GmbH & Co. OHG
Instruction Manual
90002929
01/2007
1) related to full scale
2) related to measuring value
3) from analyzer gas inlet at gas flow of approx. 1.0 l/min.
(electrical = 2 s)
4) constant pressure and temperature
5) dependent on integrated photomoter bench / sensor
6) paramagnetic oxygen measurement (PO
2
)
7) depending on sensor position
8) optional pressure sensor is required
9) standard 55 °C, optional 65 °C, not for MLT 1
10) located in thermostated chamber (MLT 2/3/4) /
thermostated sensor (MLT 1/2)
11) starting from +20 °C (to +5 °C or to + 40 °C)
12) sensor / cell only
13) electrochemical oxygen measurement (EO
2
),
not located in thermostated chamber
14) no sudden surge for PO
2
allowed!
Specifications of MLT:
Table 20-1 NDIR / VIS / UV Oxygen Sensor Thermal
(PO
2
and EO
2
) Conductivity (TC)
Detection limit ≤ 1 %
1) 4)
≤ 1 %
1) 4)
≤ 2 %
1) 4)
Linearity ≤ 1 %
1) 4)
≤ 1 %
1) 4)
≤ 1 %
1) 4)
Zero-point drift ≤ 2 % per week
1) 4)
≤ 2 % per week
1) 4)
≤ 2 % per week
1) 4)
Span (sensitivity) drift ≤ 0.5 % per week
1) 4)
≤ 1 % per week
1)
≤ 1 % per week
1) 4)
Repeatability ≤ 1 %
1) 4)
≤ 1 %
1) 4)
≤ 1 %
1) 4)
Response time (t
90
) 3 s ≤ t
90
≤ 7 s
3) 5)
< 4 s (increasing)
3) 6)
3 s ≤ t
90
≤ 20 s
3) 7)
< 5 s (decreasing)
3) 6)
approx. 12 s
3) 13)
Permissible gas flow 0.2 - 1.5 l/min 0.2 - 1.0 l/min
6)
0.2 - 1.0 (+/- 0.1) l/min
0.2 - 1.5 l/min
13)
Influence of gas flow ≤ 2 %
1) 4)
≤ 1 %
1) 4)
Permissible pressure ≤ 1,500 hPa abs. ≤ 1,500 hPa abs.
14)
≤ 1,500 hPa abs.
Influence of pressure
(at constant temperature) ≤ 0.10 % per hPa
2)
≤ 0.10 % per hPa
2)
≤ 0.10 % per hPa
2)
(with pressure compensation)
8 )
≤ 0.01 % per hPa
2)
≤ 0.01 % per hPa
2)
≤ 0.01 % per hPa
2)
Influence of temperature
(pressure constant)
- on zero point ≤ 1 % per 10 K
1)
≤ 1 % per 10 K
1)
≤ 1 % per 10 K in 1 h
1)
- on span (sensitivity) ± 5 % (+5 to +40 °C)
1) 11)
≤ 1 % per 10 K
1)
≤ 2 % per 10 K in 1 h
1)
Thermostatting approx. 55 °C
9)
approx. 55 °C
6) 10) 13)
approx. 75 °C
12)
none
13)
Heating-up time approx. 15 to 50 minutes
5)
15 to 50 minutes
5)
approx. 15 to 50 minutes
GENERAL SPECIFICATIONS