Model S4000T
42
9.2.2 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)
9.2.3 Electrical Specifications
Input Power: 24 VDC nominal, 20 to 36 VDC, 350mA max.
Relay Ratings: 8A @ 250 VAC/8A @ 30 VDC resistive max.
(3x) SPDT - Warning, Alarm & Fault
Analog Signal: 0-20mA (650 ohms max. load)
Malfunction 0mA
Gas Check 1.5mA
Setup mode 1.5mA
Calibration 1.5mA
Zero reading 4mA±0.2mA
0-100% scale 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: 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: Open AO, calibration error, sensor heater error, low DC
supply, EEPROM, EPROM, setup error, gas check time
exceeded, switch error.
Cable Requirements: 3-wire shielded cable. Max. distance between S4000T and
power source @ 24 VDC nominal
AWG FEET METERS
14 2000 610
16 1550 410
18 1050 320
20 650 200
Figure 37 24VDC Cable Lengths
Max. distance for analog output (650 ohms max):
AWG FEET METERS
14 9000 2740
16 5200 1585
18 3800 1160
20 2400 730
Figure 38 Analog Output Cable Lengths
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