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Home > Gas Detection > Fixed Point Gas Detection Systems > SEC 3000 Gas Sensor
SEC 3000 Smart Gas Sensor from Sensor Electronics
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The SEC 3000 gas detector is a unique design combining intrinsically safe and explosion proof approved standards. This allows for quick and simple field installation of a calibrated sensor module into the gas detector in hazardous locations with power applied.
The SEC 3000 sensor module retains operating parameters and calibration settings. Once the sensor module is plugged into the gas detector, the sensor module automatically uploads current information to the control board in the SEC 3000. Changing to a different type of gas sensor is accomplished by only changing the sensor module board. The existing housing and wiring remains intact.
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An industry standard 4-20 mA analog output provides remote alarm, fault and calibration signals. The entire unit utilizes self-diagnostics, identifies problems and simultaneously transmits status.
The SEC 3000 can be used in conjunction with the SEC 3100 explosion proof transmitter. The SEC 3100 has a backlit LCD display, non intrusive local calibration, 4-20 mA output, optional relays, RS485 interface and intrinsic barrier.
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 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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| 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, galvanic |
| Sampling Method |
Diffusion, optional sample draw |
| Output (digital) |
Interactive interface available on the calibration (white) wire |
| Output (analog) |
4-20 mA (source type), max 1000 ohm load at 24 VDC supply voltage |
| Response Time |
Varies for type of sensing element |
| Housing Construction |
316 Stainless Steel, explosion proof |
| Accuracy |
+/- 5% |
| Operating Voltage |
24 VDC, operating range: 18 to 32 VDC measured at the detector head |
| Power Consumption |
1 Watt Max |
| Max Current Draw |
40 mA at 24 VDC |
| Operating Temperature |
-40° to 70°C at 0 to 99% RH, non condensing |
| Approvals |
CSA: Class 1, Div 1, Groups B, C, D, T6 |
| Installation Category |
Cat I, Pollution Degree 2 |
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Features
Compact low cost design
No field gas calibration required
Intrinsically safe and explosion proof
Universal control board
Interchangeable sensor modules for oxygen and toxic gases
Temperature compensated sensor
Stand alone gas detector with 4-20 mA output
Corrosion resistant 316 stainless steel housing construction
Long life electrochemical sensors
Can be mated with SEC 3100 transmitter
Optional heater with closed loop temperature control ensures accuracy in low temperature applications
Applications
Petrochemical
Medical
Semi conductor
Mining
Pulp & paper
Offshore
Fertilizer
LNG & LPG processing
Waste water
Water treatment
Chemical
Automotive
Pharmaceutical
Refrigeration
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