- 38 -
Intrinsically Safe
Multi-gas Detector
Model XA-4400II
Intrinsically Safe
Ex ia IICT3X
(
JAPAN
)
Ingress Protection Code
IP20 (with BP-4000IIAL)
Electrical
Parameter
Catalytic sensor circuit
:
Maximum input voltages
1.65V
Maximum input currents
0.9251A
Maximum input powers
0.2406W
CPU A circuit
:
Maximum input voltages
1.65V
Maximum input currents
0.9216A
Maximum input powers
0.2399W
CPU B circuit
:
Maximum input voltages
5.73V
Maximum input currents
0.0087A
Maximum input powers
0.0124W
Maximum output voltages
5.73V
Maximum output currents
0.9398A
Maximum output powers
0.2626W
Buzzer circuit
:
Maximum input voltages
1.65V
Maximum input currents
0.9213A
Maximum input powers
0.2399W
Motor circuit
:
Maximum input voltages
1.65V
Maximum input currents
0.3856A
Maximum input powers
0.1164W
Rating
Ambient
Temperature
-20 to 50 degrees C
- 37 -
9. Specifications
Multi-gas Detector
Model XA-4400II
Target Gas
Combustible Gas
(Methane or
Isobutane)
Oxygen
Hydrogen Sulfide
Carbon Monoxide
Detection Principle
Catalytic
Combustion
(intermittent)
Galvanic Cell
Electrochemical
Cell
Electrochemical
Cell
Sampling Method
Diffusion
Detection Range
(Service Range
*1
)
0 - 100%LEL
(101-110%LEL)
0 - 25.0vol%
(25.1-50.0vol%)
0-30.0ppm
(30.1-50.0ppm)
0-300ppm
(301-2000ppm)
Indication Accuracy
*2
(excluding service
range)
/-10%LEL
/-0.5vol%
/-1.5ppm
Less than 150ppm:
/-15ppm
151-300ppm:
/-30ppm
Display Solution
1%LEL
0.1vol%
0-35ppm: 0.1ppm
35-150ppm: 0.5ppm
0-350ppm: 1ppm
350-2000ppm: 5ppm
Alarm Set Value
1
st
alarm: 10%LEL
2
nd
alarm: 30%LEL
1
st
alarm: 19.5vol%
(Upper Limit)
2
nd
alarm: 18.0vol%
(Lower Limit)
1
st
alarm: 10.0ppm
2
nd
alarm: 15.0ppm
TWA: 10.0ppm
STEL: 15.0ppm
1
st
alarm: 50ppm
2
nd
alarm: 150ppm
TWA: 25ppm
STEL: 300ppm
*3
Response Time
*4
Within 30 sec.
Within 20 sec.
Within 30 sec.
Within 30 sec.
Gas Alarm
Buzzer sound, Flashing RED lamp, Vibration, LCD (automatic recovery)
Power Source
BP-4000II AL Battery Unit
1 x Panasonic alkaline battery (LR03/AAA)
Continuous Use
Time
*5
Approx. 40 hours when the long-life mode is ON / Approx. 20 hours when the long-life
mode is OFF / Approx. 600 hours without combustible gas sensor
Operating
Temperature Range -20 to 50 degrees C, 30 to 85%RH (non condensing)
Operating
Pressure Range
Atmospheric pressure (800 to 1100hPa)
Intrinsically Safe
Ex ia IICT3X
(
JAPAN
)
Ingress Protection Equivalent to IP67
*6
Functions
Self-diagnosis (sensor trouble), Automatic air adjustment, Remaining battery level,
Peak-hold, LCD backlight, Buzzer stop for gas alarm, Time & Temperature indication,
Alarm test, Buzzer volume, Silent mode, Long-life mode, Data logging
Dimensions
70 (W) x 73 (H) x 26 (D) mm (excluding protrusions)
Mass
Approx. 130g (excluding battery)
*1: Reference indication beyond the detection range.
*2: Under an identical measurement condition.
*3: STEL alarm set value of carbon monoxide is not defined by ACGIH, but the manufacturer’s standard value.
*4: Time for 90% response (at 20 +/- 2 degrees C in ambient temperature).
*5: At 25 degrees C, without alarm, backlight OFF, data logging OFF. It varies according to the circumstances,
condition of use, storage period, etc.
*6: Dust-proof and water-proof structure which satisfies the test of New Cosmos Electric complying with JIS C
0920-2003 Ingress Protection code IP67 in the condition of brand-new Multi-gas Detector. However, this
Ingress Protection code IP67 does not guarantee any gas detection.
IP67 means a structure (IP6X) with which a Multi-gas Detector for testing ins conducted in a dust test on
depressurized condition at a maximum 2kPa to verify that there is no accumulation of dust inside, and a
structure (IPX7) with which a Multi-gas Detector for testing is slowly immersed in a stationary water bath
filled with tap water at normal temperature with its bottom end at 1m from the water surface for 30 minutes to
verify that there is no water entry and damage from such exposure.
Specifications may be subject to change without notice.