The Otis Instruments Wire Free OI-6940 Non-Explosion Proof AC-Powered Ambient Air Multi-Gas Detector simultaneously uses up to four sensor elements to detect an array of gases. The Assembly reports once a minute, however the reporting rate will increase to once every five seconds when the detected gas is above the Background Gas Set-Point. Operates from an AC power supply with an internal backup battery pack. Magnetic switches allow for non-intrusive calibration while in the field as well as full system settings and diagnostics.
2-Gas Options: Hydrogen Sulfide (H2S) and Combustible Gas - Methane - (LEL)
4-Gas Options: Hydrogen Sulfide (H2S), Combustible Gas - Methane - (LEL), Carbon Monoxide (CO), and Oxygen (O2).
Note: The OI-6940 unit can be customized to detect a variety of gases. See the "Gas Chart" tab for the full list of gases. Please call 1-800-333-3331 for more information.
Options: Additional radio options are available. Please call 1-800-333-3331 for more information.
Features
- Electrochemical, PID or Low-Power Infrared Sensor - Dependent on Gas Type
- AC Powered with Integrated Backup Battery Pack
- Graphical LCD with LED Backlight
- 4 Push-Button Interface (ADD, MENU, SUB, BACK) with 4 Corresponding Magnetic, Non-Intrusive Switches
- Wire Free (Wireless) Communication
- Adjustable Background Gas Setting
- Radio Options: 900 MHz or 2.4 GHz Radio
- 1-Year Limited Hardware Warranty
- Sensor Element Warranty Subject to Otis Verification
- Optional OI-501-7-NXP Remote Sensor Mounting Kit
Specifications
- Sensor Type: Electrochemical, Photo Ionization Detector, and/or Low-Power infrared Sensor - Dependent on Gas Type
- Power Type: AC Power Supply with Integrated 3.6VDC/76Ah Backup Battery Pack
- RF Connection: External N-Female Radio Frequency (RF) Connector, Flexible Antenna Included
- Display Screen: 160x104 Resolution Graphical LCD Screen; Transflective (Sunlight Readable) with LED Backlight
- Interface:
- 4 Push-Buttons (MENU, BACK, ADD, and SUB)
- 4 Magnetic, Non-Intrusive Switches for Calibration
- Customizable Settings: Adjustable Background Gas Setting (1% to 10% of Full Scale) - Settable per Sensor Element
- Tamb. Temperature Range: -40°C to +70°C (-40°F to 158°F)
- Wire Free Radio Options: GEN II 900 MHz (200 mW) Radio or GEN II 2.4 GHz (125 mW) Radio
- Networks:
- 52 Networks (GEN II 900 MHz Radio) or 78 Networks (GEN II 2.4 GHz Radio)
- 255 Addresses per Network
- Product Dimensions: 5 in. D x 10.5 in. W x 20 in. H (Max. Dimensions w/ Attachments)
- Enclosure Material: NEMA Class I, 4, 4X and 6 Fiberglass Enclosure with Clear Lid - IP 66, UL 508 and UL 746C (f1) Rated
- Hardware Warranty: 1-Year, Limited
- Sensor Element Warranty: Varies with Sensor Element and Type - Subject to Otis Verification
- Optional Remote Sensor Kit: OI-50 -7-NXP
- Electrochemical Sensor: Up to 250 Feet of Cable
- Low Power Infrared Sensor: Up to 40 Feet of Cable
- Photo Ionization Detector: Up to 35 Feet of Cable
Gas Chart
| Gas Type | Range | T90 | Sensor Type | Warranty |
|---|---|---|---|---|
| AsH3 - Arsine | 0-1 ppm | < 30 sec. | Electrochemical | 10 months |
| CH2O - Formaldehyde | 0-10 ppm | < 30 sec. | Electrochemical | 12 months |
| CH3SH - Methanethiol | 0-10 ppm | < 100 sec. | Electrochemical | 12 months |
| CH4 - Methane | 0-100% vol. | < 30 sec. | Infrared | 60 months |
| Cl2 - Dichlorine | 0-20 ppm | < 60 sec. | Electrochemical | 12 months |
| ClO2 - Chlorine Dioxide | 0-5 ppm | < 120 sec. | Electrochemical | 12 months |
| CO - Carbon Monoxide | 0-1000 ppm | < 30 sec. | Electrochemical | 24 months |
| CO2 - Carbon Dioxide | 0-5% vol. | < 30 sec. | Infrared | 60 months |
| ETO - Ethylene Oxide | 0-10 ppm | < 80 sec. | Electrochemical | 12 months |
| F2 - Fluorine | 0-1 ppm | < 80 sec. | Electrochemical | 12 months |
| H2 - Hydrogen | 0-4% | < 60 sec. | Electrochemical | 18 months |
| H2S - Hydrogen Sulfide | 0-100 ppm | < 30 sec. | Electrochemical | 24 months |
| H2S2K - Hydrogen Sulfide | 0-2000 ppm | < 25 sec. | Electrochemical | 24 months |
| HBr - Hydrogen Bromide | 0-30 ppm | < 40 sec. | Electrochemical | 12 months |
| HCL - Hydrogen Chloride | 0-30 ppm | < 300 sec. | Electrochemical | 12 months |
| HCN - Hydrogen Cyanide | 0-50 ppm | < 70 sec. | Electrochemical | 12 months |
| HF - Hydrogen Fluoride | 0-10 ppm | < 90 sec. | Electrochemical | 12 months |
| LEL - Combustible Gas (Methane) | 0-100% LEL (0-5% vol.) | < 30 sec. | Infrared | 60 months |
| NH3 - Ammonia | 0-100 ppm | < 90 sec. | Electrochemical | 12 months |
| NH3300 - Ammonia | 0-300 ppm | < 120 sec. | Electrochemical | 12 months |
| NH3A - Ammonia | 0-1000 ppm | < 120 sec. | Electrochemical | 12 months |
| NO - Nitric Oxide | 0-250 ppm | < 40 sec. | Electrochemical | 12 months |
| NO2 - Nitrogen Dioxide | 0-20 ppm | < 25 sec. | Electrochemical | 12 months |
| O2 - Oxygen | 0-25% vol. | < 15 sec. | Electrochemical | 24 months |
| O3 - Ozone | 0-5 ppm | < 60 sec. | Electrochemical | 12 months |
| 03H - Ozone | 0-100 ppm | < 60 sec. | Electrochemical | 12 months |
| PH3 - Phosphine | 0-5 ppm | < 30 sec. | Electrochemical | 12 months |
| SO2 - Sulfur Dioxide | 0-20 ppm | < 35 sec. | Electrochemical | 24 months |
| VOC10 - Volatile Organic Compounds | 0-10 ppm | < 3 sec. | Photo Ionization Detector | 6 months / 24 months |
| VOC20 - Volatile Organic Compounds | 0-20 ppm | < 3 sec. | Photo Ionization Detector | 6 months / 24 months |
| VOC50 - Volatile Organic Compounds | 0-50 ppm | < 3 sec. | Photo Ionization Detector | 6 months / 24 months |
| VOC1K - Volatile Organic Compounds | 0-1000 ppm | < 3 sec. | Photo Ionization Detector | 6 months / 24 months |
| VOC2K - Volatile Organic Compounds | 0-2000 ppm | < 3 sec. | Photo Ionization Detector | 6 months / 24 months |
