- Detects Methyl Bromide at TLV Levels
- Enhanced Self-diagnostic Capability Decreases Downtime and Maintenance Costs
- “Smart” Sensor Electronics Continuously Checks Sensor and System Status
- Built-in User Selectable Local Dual Level Alarms with Relay Output
- Local Digital Display
- 4-20 mA Analog Output
- Low-cost Renewable Sensor
The Methyl Bromide Gas Monitor’s instrument “smart” circuitry continuously monitors sensor cell status and sampling system performance. Continuous sensor cell operation is transmitted via 4-20 mA signal to PureAire controllers, PLC’s or remote alarm systems. Should a system error occur, the AirCheck Advantage outputs a 2 mA signal to remote alarm/control systems to immediately alert control room personnel.
The heart of the system is a smart renewable sensor cell linked to a compact pyrolizer. The sample is drawn through the pyrolizer, where Methyl bromide is thermally decomposed and converted into another gas that is more easily detected electrochemically. Unlike competitive Methyl bromide detectors, which measure at the percent LEL levels, the AirCheck Advantage measures at the PPM OSHA TLV levels.
<tr>Sensor Type<td>Renewable electrochemical cell
| Sampling Method | Extractive Sample Draw |
| Gases Detected | Methyl Bromide (CH3Br) |
| Range¹ | 0 – 20ppm |
| Accuracy | 0.5 ppm |
| Operating Temperature | 32° to 104°F (0° to to 40°C) |
| Sensor Life | 3-6 years under normal conditions |
| Gas Concentration Indicator | Built-in LCD Back-Lit Digital Display – Displays, Gas Name, ppm Concentration, AL1, AL2, System Fault Messages |
| Signal Outputs | 4-20 mA Analog Output (Active) |
| Alarm Level 1 | Yes |
| Alarm Level 2 | Yes |
| Fault | Yes |
| Sampling Distance² | 100 ft/33m |
| Sample Pump | Electromagnetic DC Diaphragm Pump |
| Power Requirements | 2.0 A 24 VDC |
| Width | 10.0 in 254 mm |
| Height | 6.5 in 165.1 mm |
| Depth | 8.05 in 204.5 mm |
| Weight | 10 lb (4.5 kg) |
| Enclosure | Polycarbonate/NEMA 4X |
| Optional Extras | Enclosure: Class 1, Div 1, Group B, C & D Explosion-Proof |
| Country of Origin | USA |
| Harmonized Tariff Code | 8531.10.0045 |
1 Other ranges available; consult PureAire.
2 Longer sampling lengths are available; consult PureAire.
Low Annual Operation Cost
The PureAire Air Check Advantage has the lowest annual maintenance costs of any gas monitoring system on the market. PureAire’s Renewable Sensor cells are easily recharged with electrolyte right in the field at approximately 20 % of the cost of disposable sensor cell type systems. Recharge costs typically run about $35.00 per sensor every 6 months. Combined with our built-in, low-power pyrolizer, and long-life sample pump, the Air Check Advantage will lower your annual operation costs. When compared to competitive gas monitors, it will pay for itself in just a few years.
Connects to DCS and PLC Controls
The Air Check Advantage transmits continuous gas concentration levels to any distributive control system, programmable logic controller, or PureAire’s proprietary single and multichannel controllers. The monitoring system Monitor can be operated remotely up to 1,000 meters, 0.6 miles from centralized distributive control systems.
