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INZ-TN4ZAFE-E
9. sPECIFICAtIons
9.1 General specifications
Standard Specifications
Measuring principle:
Measurement of thermal conductivity
Measurable component:
He, Ar, H
2
, CH
4
, CO
2
Measurable range:
Refer to Table 1
Output signal:
4 to 20 mA DC, 0 to 1 V DC, 0 to 10
mV DC
Isolated output
(Any one-output signal specifiable in
CODE SYMBOLS)
Allowable load resistance:
550 Ω max. (in 4 to 20 mA DC output)
Output resistance:
100 kΩ (in 0 to 1 V DC or 0 to 10 mV
DC output)
Display unit:
LCD with backlight
Display of measured value:
Max. 4 digits
Display language:
English
Output signal holding:
In both manual and automatic calibra-
tions, output value just before calibra-
tion can be held
Power supply:
100 to 240 V AC, 50/60 Hz
Power consumption:
Approx. 50 VA
Warm-up time:
At least 30 min
Ambient temperature:
–5 to 45˚C
Ambient humidity:
Less than 90% RH (condensation
unallowable)
Storage conditions:
–20 to 60˚C, less than 95% RH (con-
densation unallowable)
Mounting:
Mounted flush on panel
External dimensions (H x W x D):
470 x 354 x 211 mm
Mass:
Approx. 22 kg
Finish color:
Case:Silver
Cover:Blue
Housing:
Aluminim case/cover (IP65)
Material of gas-contacting parts:
JIS SUS304, platinum, platinum iridi-
um, silver, fluororubber, epoxy resin,
nickel, tin
Gas inlet/outlet, purge port:
Rc1/2 or NPT1/2 or G1/2 (whichever
specified)
External connection terminal:
M3.5 screw terminal (9-pin D-sub con-
nector for RS-232C)
Ex. Standard:
NEPSI (Exd IIc T6Gb)
Performance
Repeatability:
±1% of F.S.
Linearity:
±2% of F.S.
Drift:
Zero point : within ± 2% of full scale/
week (H
2
meter, reference gas N
2
)
Span : within ± 2% of full scale/week
(H
2
meter, reference gas N
2
)
Response time (90% response):
High speed within 10 sec (at flow rate
1L/min), allowed only for H
2
meter
(reference gas N
2
, without interfer-
ence compensation)
Standard within 60 sec (at flow rate 0.4
L/min)
Other gases interference:
Indication error of each measured
value (vol%)
Interference
component
H
2
meter
H
4
meter
Ar
meter
CO
2
meter
H
2
1%
–
+5.8
-6.5
-8.0
CH
4
1%
+0.17
–
-1.15
-1.38
SO
2
1%
-0.31
-1.8
+2.1
+2.5
Ar
1%
-0.15
-0.87
–
+1.2
CO
2
1%
-0.125
-0.725
+0.83
–
O
2
1%
+0.019
+0.11
-0.125
-0.15
H
2
O 1.5°C saturation
–
–
–
-0.56
Standard Gas Measurement Conditions
Temperature:
0 to 50˚C
Gas flow rate:
Constant at 0.4 ± 0.05 L/min
Constant at 1 ± 0.05 L/min(High re-
sponce)
Dust:
Less than 100 µg/Nm3 with a particle
size of 0.3 µm max
Pressure:
10 kPa max
Mist:
Unallowable
Oxygen gas:
No oxygen should be contained in
measured combustible gases.
Moisture:
Below saturation at 2˚C
Corrosive gas:
Unallowable
Standard gases for calibration:
Zero gas: same as reference gas or
as specified
Span gas: Concentration within 90 to
100% of measuring range
(Positive range)
Concentration beyond
100% is inapplicable
