EDS3-127C Datasheet, PDF (1/8 Pages) Fuji Electric – THERMAL CONDUCTIVITY GAS ANALYZER

THERMAL CONDUCTIVITY GAS ANALYZER <THERMOMAT>
DATA SHEET
Thermal conductivity gas analyzer is a gas analyzer which
quantitatively measures gas concentration by utilizing a causal
relationship that the temperature of a heated platinum wire
changes with gas concentration.
The analyzer continuously measures the concentration of
gases such as H2, He, and Ar with high stability.
ZAF-3
FEATURES
1. Easy-to-see large LCD is helpful for efficient operation.
2. Measured value is output as a linearized output signal.
3. Line voltage lies within 100 V to 240 V AC, 50/60 Hz.
4. External dimensions are the same as those of the pre-
ceding type.
5. Zero point and span can be automatically calibrated (at
option).
6. Other gases’ interference is correctable (at option).
7. Communicable with other system through an RS-232C
interface (MODBUS^TM)(at option).
SPECIFICATIONS
Standard Specifications
Measuring principle:
Measurement of thermal conductivity
Measurable component:
He, Ar, H2, CH4, CO2
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 calibrations,
output value just before calibration 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 unal-
lowable)
Storage conditions:
–20 to 60˚C, less than 95% RH (conden-
sation unallowable)
Mounting:
Flush mounting on panel
α
∠α=90°
External dimensions (H x W x D):
240 x 192 x 213 mm
Mass:
Approx. 5 kg
Finish color: Off-white (equivalent to 10Y7.5/0.5)
Housing:
Steel-plate case, indoor use type
Material of gas-contacting parts:
JIS SUS304, platinum, platinum iridium,
silver, fluororubber, epoxy resin, nickel,
tin
Gas inlet/outlet, purge port:
Rc1/4 or NPT1/4 (whichever specified)
External connection terminal:
M3.5 screw terminal (9-pin D-sub connec-
tor for RS-232C)
Purge gas flow rate:
Approx. 1 L/min (for measurement of
combustible gases)
Performance
Repeatability:
Linearity:
Drift:
± 1% of F.S.
± 2% of F.S.
Zero point : within ± 2% of full scale/week
(H2 meter, reference gas N2)
Span : within ± 2% of full scale/week (H2
meter, reference gas N2)
EDS3-127c
Date Apr. 1, 2011