The instrument’s “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 Air check 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. 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 Air check Advantage measures at the PPM OSHA TLV levels.
- 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
| Sampling Method | Extractive Sample Draw |
| Gases Detected | Methyl Bromide (CH3Br) |
| Range1 | 0 – 10 ppm
0 – 30 ppm |
| Accuracy | ± 10 % |
| Operating Temperature | -20 to +50 ºC
-4 to +122 ºF |
| Sensor Type | Self Checking Renewable Electrochemical Sensor |
| Sensor Life | 5 to 8 years under Normal Conditions |
| Gas Concentration Indicator | Built-in LCD Digital Display, Back Lit
Displays, Gas Name, ppm Concentration, AL1, AL2, System Fault Messages |
| Signal Outputs | 4-20 mA Analog Output
Alarm Level 1 – SPDT AC 125 V, 0.3 A max
Alarm Level 2 – SPDT DC 30 V, 1.0 A max Resistive Load
Fault – SPDT Fail Safe |
| Sampling Distance2 | 100 ft
33 m |
| Sample Pump | Electromagnetic DC Diaphragm Pump |
| Power Requirements | 2.0 A
24 VDC |
| Width | 10.0 in
254 mm |
| Height | 7.0 in
178 mm |
| Depth | 7.0 in
178 mm |
| Weight | 8.0 lb
3.62 kg |
| Enclosure | |
| Optional Extras | Enclosure: Class 1, Div 1, Group B, C & D Explosion Proof |
1 Other ranges available, consult factory.
2 Longer sampling lengths available, consult factory.
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 remote up to 1,000 meters, 0.6 miles from centralized distributive control systems.
