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Tetra Personal Gas Detector from Crowcon Detection Instruments
Designed using the latest technologies, Tetra is simple to use, reliable, robust and fully weather protected. Single button operation and intelligent sensor modules guarantee simplicity and flexibility of use. The shockproof internal construction and self checking software assure reliable gas detection in the most arduous of environments. Tetra, a personal monitor you can trust.
Reliable
- True single button operation - the most user friendly product available
- Li-Ion rechargeable battery gives a full 12 hours of operation
- Easy to read backlit graphic display for gas readings and diagnostics
- Simple indications of operating status can be viewed at a glance
- 30 day countdown warning of calibration due date
Flexible
- Fully interchangeable intelligent sensor modules
- Available with internal electric sampling pump
- Rechargeable and alkaline battery versions available
Tough
- Tough plastic construction with flexible internal assembly to resist shock and vibration
- Overmolded rubber for added protection
- Water and dust resistant to IP65
Assurance
- 94 dBA audible alarm at 30cm
- Piercingly bright dual red/blue visual alarm
- Internal vibrating alarm
- Two levels of instantaneous alarms
- Time weighted average alarm for 8 hours and 15 minute averages
Instrument Specifications
| Audible Alarms |
94 dBA at 1 foot, multiple alarm sounds allow selection of distinctive tones for different alarm levels |
| Visual Alarms |
Dual color red/blue flashing LED pair in gas hazard |
| Vibrating Alarm |
Internal |
| Display |
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 continuous real time gas concentration levels, display recall for Peak readings and TWA
|
| Datalogging |
Timed datalogging: 50 hours at 1 minute data rate, Event logger: >1500 events |
| Battery Type |
Rechargeable Li-Ion battery or non rechargeable pack 3 x AA alkaline cells |
| Operating Time |
Rechargeable: 12 hours minimum |
| Alkaline: 11 hours minimum |
| Sampling |
Hand aspirator or internal electric sampling pump |
| Temperature Range |
-4 to 131°F |
| Humidity |
20-90% RH |
| PC Interface |
IR link for RS232 connection. USB/RS232 converter available. Portable PC software package provides full configuration control, calibration and access to the Event Log file |
| Autocalibrator |
Tetra can be routinely calibrated using the Crowcon Autocalibrator II in conjunction with the Portables PC software |
| Approvals |
Class I, Div I, Groups A, B, C, D, ATEX II2G EEx iad IIC T4 BASEEFA 03ATEX0193 |
| Ingress Protection |
IP 65 |
| Weight |
1.1 pounds |
| Dimensions |
Rechargeable: 4.75" x 5" x 2.5" |
| Alkaline: 5.25" x 5" x 2.5" |
Sensor Specifications
|
Gas |
Range |
Alarm |
Response Time
|
| Ammonia |
0-100 ppm |
25 ppm |
20 seconds
|
| Carbon Monoxide |
0-500 ppm |
30 ppm |
20 seconds
|
| Chlorine |
0-20 ppm |
0.5 ppm |
20 seconds
|
| Combustible |
0-100% LEL |
10% LEL |
20 seconds
|
| Fluorine |
0-1 ppm |
0.1 ppm |
20 seconds |
| Hydrogen |
0-1,000 ppm
|
n/a
|
20 seconds
|
| Hydrogen Cyanide |
0-25 ppm
|
5 ppm
|
20 seconds
|
| Hydrogen Fluoride |
0-10 ppm
|
1 ppm
|
20 seconds
|
| Hydrogen Sulfide |
0-100 ppm
|
10 ppm
|
20 seconds
|
| Nitrogen Dioxide |
0-20 ppm
|
3 ppm
|
20 seconds
|
| Oxygen |
0-25% Vol
|
19.5% (low),
23.5% (high)
|
10 seconds
|
| Ozone |
0-1 ppm
|
0.1 ppm
|
20 seconds
|
| Phosphine |
0-5 ppm
|
0.2 ppm
|
20 seconds
|
| Phosgene |
0-1 ppm |
0.1 ppm |
20 seconds |
| Sulfur Dioxide |
0-20 ppm
|
2 ppm
|
20 seconds
|
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.
Ordering Information
The Tetra is supplied with an integral belt/pocket clip. Pumped units include a pump sampling flow plate with 6' of sampling tubing. Please specify rechargeable or AA battery pack. The Confined Space Kit includes a chest harness, shoulde strap, software, 58L calibration gas, regulator, cable, and case. Other sensor combinations available, please contact AFC for details. For pricing, please call AFC International at 1-800-952-3293, 219-987-6825 or fax 219-987-6826 or email sales@afcintl.com
| Description |
Catalog No. |
| Tetra with LEL, Oxygen, Carbon Monoxide & Hydrogen Sulfide Sensors |
TET-02/ABCD |
| Tetra with LEL, Oxygen, Carbon Monoxide & Hydrogen Sulfide Sensors & Pump |
TET-01/ABCD |
| Confined Space Kit |
CSK-01
|
| Confined Space Kit without Gas and regulator |
CSK-02
|
| 3' Sample Probe |
C01097
|
| Telescopic Aspirator Probe |
C01757
|
| Water Trap |
C01245
|
Downloads
 Tetra literature
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