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Benefits of
Draeger Miniwarn vs. Crowcon Tetra...
The Miniwarn's audible alarm is 85dBA @ 1 foot
while Tetra's extremely loud alarm is 95dBA @ 1 foot, providing greater
protection. Miniwarn offers a vibrating alarm as an option in alkaline
or non standard NiMH battery pack while this is a standard feature of Tetra,
allowing for additional warning of gas hazards.
The Miniwarn visual alarm consists of red LED's
(light emitting diodes) only while Tetra comes equipped with an eye catching
red-blue flashing alarm. Blue light photons have been proven to have
higher energy than red, thereby increasing visibility and safety.
Draeger'sMiniwarn boasts of an easy to hold
ergonomic shape, but that is not necessarily good when attached to the body.
Miniwarn's design allows it to tip forward, risking catching on objects.
Tetra offers a more contoured, body hugging shape making it convenient for
climbing ladders and gas detection in confined spaces. Also notice how
the display on the Draeger Miniwarn is on the front of the unit.
Crowcon Tetra's display is on top so the user can glance down at it while
wearing it. With the Miniwarn display on the front, the user must
remove it from his or her body and hold it in their hand to look at it.
The less you have to "fiddle" with an instrument while climbing around in a
confined space, the better.
Ruggedness...
Tetra contains a flexible internal assembly,
allowing the shock to be absorbed by the casing instead of the boards and
sensors when dropped. Tetra can also float if accidentally dropped in
water, saving on repairs and replacement costs. Tetra is an ultra
rugged, reliable, portable multi-gas detector available with a built-in internal pump.
Even though Tetra is compact and lightweight (about 1 lb.) it is one of the
most durable gas detection instruments on the market. Tetra is
certified valid for use in temperatures up to 131 degrees Fahrenheit,
making it suitable for use in foundries, steel mills and hot outdoor
climates.
Tetra comes with internal software that conforms
to IEC 61508 standards, guaranteeing functional safety.
Choose the Most Features for Your Money...
Both Draeger's Miniwarn and Crowcon's Tetra are
quality products for gas detection applications. When spending your
or your company's money, don't you want the most value for your dollar?
Tetra's simple one button operation and rugged construction will save you on
operating costs, repairs and replacements. If you prefer innovative
features and a reasonable price, tetra is the portable gas detector for you.
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Compare Features of Tetra with Draeger
Miniwarn... |
|
|
Crowcon Tetra |
Draeger Miniwarn |
|
Number of Sensors |
1-4 |
1-4 |
|
Sensor Types |
Fl, OX, Toxics |
FL, Ox and Toxics |
|
Max number toxic gases |
4 from total of 12 |
3 from a choice of
12 |
|
Intelligent Sensors |
Yes, fully
pre-calibrated |
Yes |
|
Size |
124x128x57 mm |
143x78x58 mm |
|
Weight |
500g |
585g |
|
Ingress Protection |
IP65 |
IP54 |
|
Instantaneous Alarms |
2 |
2 |
|
TWA Alarms |
8hr and 15min |
8hr and 15 min |
|
Alarm Tones |
Selectable from 5 |
Single Tone |
|
Sounder Output |
85dBA @ 1ft |
85dBA @ 30cm |
|
Visual Alarm |
Red and Blue LEDs
on top |
Four LEds
illuminate the top |
|
Vibrating Alarm |
Yes |
No |
|
Confidence Flash |
Flashing Icon |
Every 8 Seconds |
|
Confidence Sound |
Every 10 seconds |
Every 8 Seconds |
|
Low Battery Alarm |
Yes |
Pre-10 mins, alarm
2 min |
|
Display |
Simultaneous |
Simultaneous |
|
Display Type |
Graphic LCD |
LCD |
|
Peak Display Capability |
On Demand |
Yes |
|
TWA Toxic Display |
On Demand |
Only as alarm
message |
|
Auto zero on Start Up |
Configurable |
No |
|
Computer Interface |
IR |
IRDA Interface |
|
Data Logging |
Event Logging |
Optional |
|
Flammable Gas Factors |
Yes |
Multiple
Configurations |
|
Rechargeable Battery |
Li-ion |
NiMH (T4) or Nicad
(T4/T6) |
|
Operating Time |
12hrs |
8-12hrs |
|
Recharge Time |
5 hours |
4.5 hrs |
|
Dry Cell Batteries |
AA cells |
Yes, T4 or T6 |
|
Operating Time |
15 hours |
12 hours |
|
Sampling |
Diffusion/Aspirator/Pumped |
Diffusion/Aspirator |
|
Electric Pump |
Internal, optional |
Yes, External |
|
Certification Code Rechargeable
(Europe) |
EEx iad IIC T4 (Tamb
+55degC) |
EEx iad IIC T4/T6,
ATEX |
|
Certification Code Dry Cell (Europe) |
EEX iad IIC T3 (Tamb
+55degC) |
EEx iad IIC T4/T6,
ATEX |
|
Temperature Rating |
-20 to +55 degC |
-20 to +50
°C |
|
Certification Code Rechargeable (US) |
Class I Division 1
Groups A,B,C,D |
Class I Division 1
Groups A,B,C,D |
|
Certification Code Dry Cell (US) |
Class I Division 1
Groups A,B,C,D |
Class I Division 1
Groups A,B,C,D |
|
Rubber Boot |
Over molded |
No |
|
Carry case |
Yes |
Option |
|
Chest Harness |
Yes |
No |
|
Shoulder Strap |
Yes |
No |
See the
Crowcon Tetra Gas Monitor
or read about all
Portable Gas Detectors.
If you have
any questions, call us toll free, we'll be glad to help!
1-877-688-2703
Contact
Us | About Us
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