Ruggedized Portable Gas
Detector can Monitor Oxygen, Toxic and Flammable Gases Simultaneously with
Simple One Button Operation...
Portable gas detectors are highly sophisticated
instruments that are extremely effective, easy to maintain and calibrate.
Utilizing a distinctive design and cutting edge technology, Tetra is
lightweight, durable and easy to use. This versatile and intrinsically
safe instrument is designed to meet challenging requirements in harsh
environments. Ease of operation, durability and state-of-the-art
software assure the Tetra user of reliable gas detection.
Tetra's intelligent design makes it completely
immune to radio frequency interference. Tetra's versatility allows it
to be configured with any 4 gas sensors and features intelligent sensors
which come pre-calibrated, so they can be interchanged easily.
This advanced instrument has everything
available for gas leak detection solutions. Tetra can be purchased
with an optional built-in sampling pump or used with a separate aspirator.
Pumped units are supplied with a sampling kit containing a flowplate and
6ft. of tubing.
The Crowcon claims Tetra
is rugged, reliable and rea$onably priced. We at BPA are extremely
impressed by the Tetra Portable Gas Monitor. Competitor's models break
when dropped. We threw ours at a wall and it was unaffected.
Crowcon really did their research when developing this product for use in
the field. Displaying four gases with the touch of one button is
essential, like glancing at the speedometer while maneuvering amidst
traffic. These and other points really set the Tetra far above any
competitive gas detectors we have seen.
Compare Crowcon Tetra to Similar
Portable Gas Detectors
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Crowcon Tetra
Portable Multi-Gas Detector
Prices and Accessories
FREE U.S. Shipping
1-877-688-2703
* Readily absorbed gases (NO2, CL2,
PH3, O3, F2 and HF) WILL NOT be detected if an aspirator or hose
is used and should not be used in pumped instruments with the pump
operating.
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Tetra Portable Gas Monitor
Features...
- Tetra's unique internal software was designed to meet or exceed
all government standards
- Durable construction with over
molded rubber resists vibration
and shock
- Dust and water resistant to IP65
- Tetra operates with a single button and an easy to read graphic
display
- Rechargeable battery provides 12 hours of continuous operation
- Alert countdown of calibration due date
- Tetra gas detectors are available with rechargeable or alkaline
batteries
- Crowcon, producer of Tetra, has provided quality
gas
detection equipment for over 35 years
Applications for Tetra Portable Gas Detector...
- Tetra personal gas monitor is intended for personal
safety
monitoring, confined space entry and hazardous work
environments
- Tetra offers solutions to a variety of customers including: fire
and emergency service personnel, boiler rooms, utilities, wastewater
treatment plants, mining and steel industries where accidental
leakage of gas or vapor can become an explosive danger
Product Information...
- Lightweight - just over 1lb. - quality construction makes Tetra
durable and intrinsically safe
- Easy to read red/blue visual alarm
- Operating status can be easily viewed
- Internal vibrating alarm - two levels of immediate alarm - audible
alarm 94dBA (@30cm)
- Dust and water resistant to IP65 - (IP) Ingress Protection is the
standard system used for classifying the degree of protection
provided by the enclosures of electrical equipment
 Gas Kit Test
The Gas Kit Test provides the customer a
simple way to verify that Tetra is performing within its acceptable
limits. This kit allows the customer a method to evaluate the
Tetra response and determine if it is functioning within its defined
applications and if calibration is accurate.
Relevance of Personal Gas Detectors
Thousands of lives are lost and millions
of dollars in property damage occur each year throughout the world
due to gas explosions. A gas explosion is defined as a process
where combustion of a premixed gas-air cloud causes a rapid increase
of pressure. Typically, natural gas is flammable in 4 to 14
percent natural gas to air mixture. In a confined space, that
mixture can be not only flammable, but explosive. There are
over 60 million gas service lines in the United States alone.
Using the Tetra personal gas monitor and focusing on leak survey
procedures, pinpointing and recognition of potential hazards, this
potentially dangerous problem can be greatly reduced.
Crowcon's highly regarded reputation for providing solutions to fire
and gas detection ensures customers of high quality and competitive
prices.
|
Tetra Specifications |
|
Weight |
498 Grams (1.1 lbs), Including Batteries |
|
Dimensions |
4-3/4 x5x2-1/2 inches (122x128x57mm) rechargeable
5-1/4 x5x2-1/2 inches (134x128x57mm)
non-rechargeable |
|
Typical Measuring Ranges
and Alarm Settings |
Gas |
Range |
Alarm (UK-ROW) |
Alarm (US) |
|
Other ranges and alarm
levels are available on request. Each gas channel can
have two instantaneous alarm levels set. Toxic channels also have Time
Weighted Average alarms. Flammable gas calibration is available for methane,
propane, butane, pentane,
hydrogen and ethylene as standard. |
Flammable |
0-100% LEL |
20% LEL |
10% LEL |
|
Hydrogen Sulfide |
0-50,0-100
0-250 PPM |
5 PPM |
10 PPM |
|
Carbon Monoxide |
0-500,0-999 PPM |
30 PPM |
35 PPM |
|
Sulfer Dioxide |
0-50 PPM |
2 PPM |
2 PPM |
|
Chlorine |
0-5 PPM |
0.5 PPM |
0.5 PPM |
|
Nitrogen Dioxide |
0-10 PPM |
3 PPM |
3 PPM |
|
Phosphine |
0-5 PPM |
0.2 PPM |
0.2 PPM |
|
Ammonia |
0-50 PPM |
25 PPM |
25 PPM |
|
Hydrogen Cyanide |
0-25 PPM |
5 PPM |
5 PPM |
|
Hydrogen |
0-999 PPM |
N/A |
N/A |
|
Oxygen |
0-25% |
19% & 23% |
19.5% & 23.5% |
|
Typical Alarm Response
Time |
Flammable |
20 Seconds |
|
Oxygen |
10 Seconds |
|
Typical Toxic Gas |
20 Seconds |
|
Audible Alarm |
94dBA at 1 foot (30cm), Selectable
tones,
Confidence Blip (selectable)
Triple Beep Every 10 seconds for discharged battery |
|
Visible Alarm |
Dual color Red/Blue flashing
LED pair in gas hazard |
|
Vibrating Alarm |
Internal Vibrating Alarm |
|
Display |
128x64 graphic LCD with
backlight, giving
simultaneous display for all gas channels. Graphic
symbols for battery (with proportional indication of
remaining operation time), pump operation, healthy
operation or fault warning. Start up indication when
calibration is due within 30 days, calibration overdue,
or service required. |
|
Display Mode |
Normal display for real time
gas concentration
levels. Display recall for Peak readings and TWA |
|
Datalogging |
Event logging, 8000 event
capacity |
|
Battery Type |
Rechargable Li-ion battery
Non rechargeable pack 3xAA Alkaline cells |
|
Operating temp. range |
-20°C
to +55°C
(-4°F
to +131°F) |
|
Humidity |
0-99% RH |
|
Approval Codes |
USA & Canada |
Class I Division 1 Groups A,
B, C, D. |
|
|
Europe |
ATEX II 2G EEx iad IIC T4 (Tamb
-20oC to +55oC)
BASEEFA 03ATEX0193 |
|
Standards |
USA & Canada |
UL913, CSA22.2, 152 |
|
|
Europe |
EN50014, EN50020, EN50018,
94/9/EC |
|
Ingress Protection |
IP65 |
Tetra Prices and
Accessories
See our entire line of
Portable Gas Monitors
or read about all
Gas Monitors.
If you have
any questions, call us toll free, we'll be glad to help!
1-877-688-2703
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