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Benefits of Tetra vs. MSA Orion...
First let's look at ruggedness. MSA Orion casing meets Ingress Protection
standards to IP54. That's pretty good, but it's not a full outdoor specification.
Tetra meets standards of IP65, making it dust proof and water resistant to
water projected from a nozzle. This makes Tetra much more suited for
harsh outdoor environments.
As far as ergonomics, Orion's design is rather tall and is bulky front
to back, making it less convenient for personnel entering confined spaces
and climbing ladders. Tetra's compact, contoured design hugs the user's
body providing ease of use and additional security. MSA Orion has 2
displays on the front, 1 for concentrations and a second for diagnostics.
The Tetra goes two steps further by displaying all four gases simultaneously
as well as diagnostics on the top of the unit where they are visible without
removing the unit from where it is worn on the body.
The most important function of any gas detection
device is the alarm. Orion does not have a vibrating alarm.
Tetra provides a vibrating alarm as standard giving better and additional
protection of gas hazards. This feature is particularly useful in
confined spaces where maneuverability is a concern. Orion LEDs are located on the bottom of the unit.
When worn on a clip this impedes visibility. Tetra's display and LED's are located on top of
the device, making it easy to read without handling. Orion's visual alarm is red LED's only.
Tetra features a highly visible red-blue LED combination alarm. Blue
light photons have been proven to have greater visibility than red, which is
why it is a standard flashing light color for emergency vehicles.
Orion's sensor capabilities are limited to
flammable, oxygen, CO and H2S gases only. The flexible Tetra provides
a wide range of different sensor combinations that are fully
interchangeable and pre-calibrated. Orion does not respond to the presence of
toluene. Tetra's flammable sensor responds to aromatics, making it
suitable for refineries and petrochemical plants.
Features of Tetra...
Tetra is designed with single button operation,
flexible, intelligent sensor modules and shockproof internal construction
that assures dependable gas detection in the most arduous environments.
Tetra gives extra protection from gas hazards with a loud audible alarm,
piercingly bright dual red/blue visual alarm and an internal vibrating
alarm. Tetra's innovative design allows operating status to be viewed
at a glance and has a 30 day countdown warning of when calibration is due.
Don't pay more for less...
Keep your operating expenses down buy purchasing
the high quality Tetra that requires less maintenance and optional
parts than other models. You can spend more for a portable multi-gas
detector, but why? Crowcon's Tetra is the most flexible, reliable and
best priced gas detection instrument available.
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Compare Features of Tetra with MSA Orion... |
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|
Crowcon Tetra |
MSA Orion |
|
Number of Sensors |
1-4 |
4 Gas |
|
Sensor Types |
Fl, OX, Toxics |
FL, OX, H2S, CO |
|
Max number toxic gases |
4 from total of 12 |
H2S and CO only |
|
Intelligent Sensors |
Yes, fully
pre-calibrated |
No |
|
Size |
124x128x57 mm |
165x92x66 mm |
|
Weight |
500g |
500g? |
|
Ingress Protection |
IP65 |
IP54 |
|
Instantaneous Alarms |
2 |
1, except oxygen
Hi/Lo |
|
TWA Alarms |
8hr and 15min |
No |
|
Alarm Tones |
Selectable from 5 |
Frequency
Adjustable |
|
Sounder Output |
85dBA @ 1ft |
85dBA @ 1ft |
|
Visual Alarm |
Red and Blue LEDs
on top |
Two LEDs visible
320° |
|
Vibrating Alarm |
Yes |
No |
|
Confidence Flash |
Flashing Icon |
Flasing Icon |
|
Confidence Sound |
Every 10 seconds |
Yes |
|
Low Battery Alarm |
Yes |
Yes, 20 mins |
|
Display |
Simultaneous |
Simultaneous |
|
Display Type |
Graphic LCD |
LCD |
|
Peak Display Capability |
On Demand |
Yes |
|
TWA Toxic Display |
On Demand |
No |
|
Auto zero on Start Up |
Configurable |
User Confirmation |
|
Computer Interface |
IR |
PC Link |
|
Data Logging |
Event Logging |
Optional |
|
Flammable Gas Factors |
Yes |
No |
|
Rechargeable Battery |
Li-ion |
NiMH |
|
Operating Time |
12hrs |
20 hrs |
|
Recharge Time |
5 hours |
3 hrs |
|
Dry Cell Batteries |
AA cells |
AA Cells |
|
Operating Time |
15 hours |
14 hours |
|
Sampling |
Diffusion/Aspirator/Pumped |
Diffusion/Aspirator |
|
Electric Pump |
Internal, optional |
Optional |
|
Certification Code Rechargeable
(Europe) |
EEx iad IIC T4 (Tamb
+55degC) |
EEx iad IIC T3
(+40) |
|
Certification Code Dry Cell (Europe) |
EEX iad IIC T3 (Tamb
+55degC) |
EEx iad IIC T4
(+50) |
|
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 |
Yes |
|
Chest Harness |
Yes |
Yes |
|
Shoulder Strap |
Yes |
Yes |
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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