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Home > Gas Detection > Fixed Point Gas Detection Systems > SEC 3100 Digital Gas Transmitter
SEC 3100 Digital Gas Transmitter from Sensor Electronics
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The SEC 3100 provides interface capabilities for the SEC 3000 gas detector and SEC Millennium infrared gas detectors.
The SEC 3100 features
- Back lighted LCD for gas level/unit parameter display
- Four (4) configurable alarm/fault relays
- An isolated RS485 Modbus interface provides reliable communication in noisy environments and eliminates "Ground Loop" problems
- Three magnetic switches for local configuration and calibration
- Time stamped data logging using a removable non volatile memory module. Module can be removed from the unit to allow remote data downloading and data archiving.
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An optional IS barrier allows "hot" sensor replacement in rated locations. This allows the user to install pre calibrated/pre configured sensor boards without removing unit power while maintaining EX rating. Removable circuit board stack and detachable connectors facilitate field wiring installation.
Gases & Ranges
| Gas |
Range
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| Ammonia |
0-200 ppm
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| Arsine |
0-1,000 ppb
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| Bromine |
0-2 ppm
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| Carbon Dioxide |
Call
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| Carbon Monoxide |
0-100 ppm
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| Chlorine |
0-10 ppm
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| Chlorine Dioxide |
0-2 ppm
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| Combustible |
Call
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| Diborane |
0-1,000 ppb
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| Ethylene Oxide |
0-20 ppm
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| Fluorine |
0-2 ppm
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| Formaldehyde |
0-20 ppm
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| Germane |
0-1,000 ppb
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| Hydrogen |
0-1,000 ppm
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| Hydrogen Chloride |
0-20 ppm
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| Hydrogen Cyanide |
0-20 ppm
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| Hydrogen Fluoride |
0-10 ppm
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| Hydrogen Peroxide |
Call
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| Hydrogen Selenide |
0-1,000 ppb
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| Hydrogen Sulfide |
0-100 ppm
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| Nitric Oxide |
0-100 ppm
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| Nitrogen Dioxide |
0-15 ppm
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| Oxygen |
0-40% Vol
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| Ozone |
0-2 ppm
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| Phosgene |
0-2 ppm
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| Phosphine |
0-1,000 ppb
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| Silane |
0-20 ppm
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| Sulfur Dioxide |
0-20 ppm
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Unit Status Chart
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Current
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Output
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Status
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4-20
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mA
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Normal measuring mode |
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0.0
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mA
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Unit fault |
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0.8
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mA
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Unit warm up |
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1.2
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mA
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Zero drift fault |
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1.6
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mA
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Calibration fault |
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2.0
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mA
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Unit spanning |
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2.2
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mA
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Unit zeroing |
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4.0
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mA
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Zero gas level |
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5.6
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mA
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10% of full scale |
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8.0
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mA
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25% of full scale |
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12
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mA
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50% of full scale |
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16
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mA
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75% of full scale |
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20
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mA
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100% of full scale |
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>20
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mA
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Over range (>100%) |
Specifications
| Detection Method |
Toxic Gases: Electrochemical, Combustible: Infrared |
| Sampling Method |
Diffusion, optional sample draw |
| Output (digital) |
RS485 LAN, isolated |
| Output (analog) |
4-20 mA (source type), max 1000 ohm load at 24 VDC supply voltage |
| Display |
Back lighted LCD, LEDs for relay status |
| Housing Construction |
Epoxy coated aluminum |
| Operating Current |
125 mA max @ 24 VDC |
| Operating Voltage |
24 VDC, operating range: 18 to 32 VDC |
| Power Consumption |
Toxic & O2: 4W Max
HC & CO2: 9W Max |
| Operating Temperature |
-40° to 70°C at 0 to 99% RH, non condensing |
| Approvals |
Pending |
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Features
Explosion proof
Back lighted LCD display
Low Cost
Plug and play toxic, oxygen and combustible gas sensors
Self check system
4-20 mA output
RS485 interface, isolated
Alarm and fault relays
Non intrusive configuration
Non intrusive calibration
Removable, non volatile, time stamped data logging memory stick
Optional IS barrier
Digital communication link to SEC 3000 and SEC Millennium gas detectors
Multi port housing for easy installation
Applications
Petrochemical
Compost facilities
Semi conductor
Mining
Pulp & paper
Offshore
Buildings
Automotive industry
Engine test rooms
LNG & LPG facilities
Sewage industry
Water treatment plants
Parking garages
Chemical
Automotive
Nuclear industry
Fertilizer
Tunnels
Medical
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