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Hermes - Personal Mercury Monitor
From2B Technologies
2B Tech has taken the next step in miniaturization of UV-based mercury monitors by developing the HERMES Personal Mercury Monitor or "PMM." The HERMES has dimensions of 4 x 3 x 1.5 inches and weighs only 0.75 lb (340 g). It has a built in GPS so that mercury measurements may be logged continuously along with geographic location. By folding the optical path in the shape of a "U," it was possible to achieve a 15-centimeter path length, enabling extremely sensitive measurements of mercury in ambient air.
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- Monitoring of exposure to individuals in the workplace
- Monitoring and control of mercury in industrial settings
- Personal exposure monitoring for studies of health effects of air pollutants
- Long-term monitoring at remote locations where power is highly limited
- Measurement Principle: UV Absorption at 254 nm
- Linear Dynamic Range: 0 to 2,000 μg/m3
- Resolution: 0.1 μg/m3
- Precision (1σ rms noise): Greater of 0.1 μg/m3 or 2% of reading (in 10-s measurement mode)
- Limit of Detection (2σ): 0.2 μg/m3 (in 10-s measurement mode)
- Accuracy: Greater of 0.1 μg/m3 or 2% of reading
- NIST-Traceable Calibration: Yes
- Measurement Interval: Fast mode: 2 s
- Measurement mode: 10 s
- Data averaging options: 1 min, 5 min, 1 hr
- Flow Rate (nominal): ~0.8 Liter/min
- Flow Rate Requirement: >0.5 Liter/min
- Baseline Drift: < 0.1 μg/m3/day
- < 5 μg/m3/year
- Sensitivity Drift: < 1%/day
- < 3%/year
- Measurement Time, Frequency: Fast mode: 2 s, 0.5 Hz
- Measurement mode: 10 s, 0.1 Hz
- Response Time, 100% of Step Change: For 2-s output: 4 s, 2 points
- For 10-s output: 20 s, 2 points
- Averaging Times: 1 min, 5 min, 1 hr
- Data Storage: 8,192 lines
- (2-s fast mode ~4.6 hr; 10-s meas. mode ~1 day; 1-min avg ~6 days; 5-min avg ~1 mo; 1-hr avg ~1 yr)
- Mercury Units: ppb, µg m-3
- Pressure Units: torr
- Temperature Units: K
- T and P Corrected: Yes
- Operating Temperature Range: 0 to 50 °C
- Operating Altitude Range: ~0-13.5 km (150-1,013 mbar)
- [modifications for higher altitudes available as an option]
- Power Requirement;
- Supplied by battery or 110/220 VAC Power Pack: 7-24 V dc, nominally 250 mA at 12 V, 3.0 watt
- External Battery: 7.4 Volt, 1.6 amp hour, Lithium Ion Battery, 5-8 hr
- Size: 4.0 x 3.0 x 1.5 inches (10.2 x 7.6 x 3.8 cm)
- Weight: 0.75 lb. (0.34 kg)
- Data Transfer Baud Rate: 19200
- DewLine™: Yes
- GPS: Yes
- Sampling Probe: Available as an option
- HERMES™ Personal Mercury Monitor™
- AC Power Adapter (100-240 VAC to 12 VDC) with Country-Specific Plug
- Cigarette Lighter Adapter
- 7.4 V Lithium Ion Battery
- Battery Charger
- Serial Port Cable
- USB Cable
- Zeroing Cartridge
- USB stick with Operation Manual, 2B Display Software, and USB Driver
- Instrument Birth Certificate
- Calibration Data and NIST-Traceable Calibration Certificate
- One Year Warranty