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.

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.

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

Gases & Ranges

Range
Ammonia	0-200 ppm
Arsine	0-1,000 ppb
Bromine	0-2 ppm
Carbon Monoxide	0-100 ppm
Chlorine	0-10 ppm
Chlorine Dioxide	0-2 ppm
Diborane	0-1,000 ppb
Ethylene Oxide	0-20 ppm
Fluorine	0-2 ppm
Formaldehyde	0-20 ppm
Germane	0-1,000 ppb
Hydrogen	0-1,000 ppm
Hydrogen Chloride	0-20 ppm
Hydrogen Cyanide	0-20 ppm
Hydrogen Fluoride	0-10 ppm
Hydrogen Peroxide	Call
Hydrogen Selenide	0-1,000 ppb
Hydrogen Sulfide	0-100 ppm
Nitric Oxide	0-100 ppm
Nitrogen Dioxide	0-15 ppm
Oxygen	0-40% Vol
Ozone	0-2 ppm
Phosgene	0-2 ppm
Phosphine	0-1,000 ppb
Silane	0-20 ppm
Sulfur Dioxide	0-20 ppm

Unit Status Chart

Current	Output	Status
4-20	mA	Normal measuring mode
0.0	mA	Unit fault
0.8	mA	Unit warm up
1.2	mA	Zero drift fault
1.6	mA	Calibration fault
2.0	mA	Unit spanning
2.2	mA	Unit zeroing
4.0	mA	Zero gas level
5.6	mA	10% of full scale
8.0	mA	25% of full scale
12	mA	50% of full scale
16	mA	75% of full scale
20	mA	100% of full scale
>20	mA	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

Ordering Information

For pricing, please call AFC International at 1-800-952-3293, 219-987-6825 or fax 219-987-6826 or email sales@afcintl.com.

Downloads

SEC 3000 literature.