S4000C
37
9.3 Specifications
9.3.1 System
Specifications
Sensor Type:
Continuous diffusion, low temperature catalytic bead
Sensor Life:
3 to 5 years typical
Accuracy:
+3% LEL up to 50% LEL
+5% LEL > 51% LEL
Zero Drift:
Less than 5% of full scale per year
Response Time:
T50<10 sec. T90<30 sec. with 100% LEL methane
applied
Measuring Ranges:
0-100% LEL
Modes:
Calibration, gas check, setup
Electrical Classification:
CSA/FM: Class I, Division 1, Groups B, C, D and Class I,
Zone 1, Ex d IIB+H
2
, T6.
ATEX: II 2 G EEx d IIB T5 (Tamb=-40°C to +70°C) EN
61779-1
Pressure Limits:
Up to 3 Atmospheres, sensor requires 15 minutes from
start up to stablize
Warranty:
Two years
9.3.2 Mechanical
Specifications
Length:
6.4 inches (161mm)
Height:
3.4 inches (86mm)
Width:
4.1 inches (104mm)
Weight:
5.5 lbs. (2.5 kg)
Mounting Holes:
5.0 inches (127mm) (center to center)
9.3.3 Electrical
Specifications
Input Power:
24 VDC nominal, 20 to 36 VDC, 250mA max.
Power Consumption
Start-up 280mA, Normal Operation 160mA
Relay Ratings:
8A @ 250 VAC/8A @ 30 VDC resistive max.
(Optional)
(3x) SPDT - Warning, Alarm & Fault
Analog Signal:
0-20mA (650 ohms max. load)
Malfunction 0mA
Calibration 1.5mA
Gas Check
1.5mA
Setup mode
1.5mA
Startup
4mA+0.2mA
Zero reading
4mA+0.2mA
0-100% LEL
4-20mA
Over-range 20-22mA
Status Indicators:
Three-digit digital display with gas concentration, Warn
and Alarm LED’s, calibration prompts, fault codes, and
setup options
RS-485 Output:
(Optional)
Dual Redundant MODBUS RTU, suitable for linking
Up to 128 units or up to 247 units with repeaters
Baud Rate:
2400, 4800, 9600, or 19200 BPS
Faults Monitored:
Calibration error, open AO, sensor error, low DC supply,
EEPROM, EPROM, setup error, gas check time
exceeded, switch error
RFI/EMI Protection:
Complies with EN50081-2, EN50082-2