Manufacturer: RAE Systems
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The VRAE is a powerful, pumped, 1-5 gas monitor that monitors combustibles in the percent by volume range regardless of oxygen levels. The VRAE is capable of monitoring either combustibles, oxygen, and three toxic gases or combustibles and four toxic gases. Its durable Nickel-Metal-Hydride batteries, powerful internal pump and rugged frame make it ideal for leak detection and site surveys.
Key Features
- Toxic sensors include CO, H2S, SO2, NO, NO2, Cl2, NH3, HCN, PH3
- Large alarm-activated backlit LCD display
- Visual alarm with flashing LED
- Large keys usable with gloved hand
- Rigid inlet probe
- 10 hours continuous operation
- Sample collection port
- Optional 16,000 data points downloadable to PC
- Strong protective rubber boot
- Protected from interference by portable radios (RFI)
- Internal sample draw pump for quick response and remote sampling
- Smart battery charging with status indication and LED indicator
- Snap-in rechargeable NiMH or alkaline battery pack
- 48 built-in Correction Factors for LEL sensor
- 4 toxic sensor version available
Size
- 8.3" L x 3.0" W x 1.9" H (21 cm x 7.6 cm x 4.9 cm)
Weight
- 20 oz with battery pack (568 g)
Sensors
- Catalytic sensor for combustible gas
- Thermal conductivity sensor for percentage volume combustible gas
- Electrochemical sensors for oxygen and toxic gases
Sensor Specifications
| Range | Extended Range | Resolution | |
| Combustible | 0 to 100% LEL | 1% | |
| 0 to 100% VOL | 1% | ||
| Oxygen | 0 to 30.0% | 0.10% | |
| Carbon Monoxide | 0 to 500 ppm | 1500 ppm | 1 ppm |
| Hydrogen Sulfide | 0 to 100 ppm | 500 ppm | 1 ppm |
| Sulfur Dioxide | 0 to 20.0 ppm | 150 ppm | 0.1ppm |
| Nitric Oxide | 0 to 250 ppm | 1000 ppm | 1ppm |
| Nitrogen Dioxide | 0 to 30.0 ppm | 150 ppm | 0.1 ppm |
| Chlorine | 0 to 10.0 ppm | 30 ppm | 0.1 ppm |
| Hydrogen Cyanide | 0 to 100 ppm | 100 ppm | 1 ppm |
| Ammonia | 0 to 50 ppm | 200 ppm | 1 ppm |
| Phosphine | 0 to 5.0 ppm | 20 ppm | 0.1 ppm |
Battery
- Rechargeable, snap-in, field replaceable 4.8V, 1.1 Ah NIMH attery pack, 4 AA battery adapter
Operating Hours
- 10 hours continuous operation
Display
- 2-line, 16-digit LCD with LED back light automatically turns on in dim light or alarm condition
Keypads
- 1 operation and 2 programming keys
Direct Readout
- Instantaneous reading (up to 5 values)
- Oxygen as percentage by volume
- Combustible gas as percentage by volume or percentage of lower explosive limit (LEL)
Alarms
- 90 dB buzzer and flashing red LED to indicate exceeded preset alarms:
- High: 3 beeps and flashes per second
- Low: 2 beeps and flashes per second
- STEL and TWA: 1 beep and flash per second
- Alarms latching with manual override or automatic reset
- Additional diagnostic alarm and display message for low battery and pump stall
Datalogging
- Optional 16,000 points (53 hours, 5 channels at one minute intervals) download to PC with serial number of unit, user ID, site ID and calibration date
Calibration
- Two-point field calibration of zero and span gas
Sampling Pump
- Internal pump, flow rate 400 cc/minute
- Automatic shut off at low flow condition
Hazardous Area Approval
- US: UL, cUL, Classified as Intrinsically Safe for use in Class I, Division 1 Groups A, B, C, D, Hazardous Locations T3C rating
Temperature
- -4° F to 113° F (-20° C to 45° C)
Humidity
- 0% to 95% relative humidity (non-condensing)
Attachment
- Durable rubber boot and wrist strap
Warranty
- Lifetime on non-consuming components (per RAE Systems Standard Warranty), 2 years for O2, LEL, CO and H2S sensors, 1 year for all other sensors, 1 year pump, 1 year battery
- Confined Space Entry
- Refineries and petrochemical plants including offshore drilling and plant shut downs
- Waste water treatment plants
- Shipyard and maritime
- Landfill operations
- Trenches, silos, railcars
- Food processing, refrigeration, decomposition, process off gasing, poultry farms
- Cable vaults, transformer stations
- Fire departments