产品介绍：
1.0.1微米的最小粒径设置,流量0.1cfm
2.2道6个粒径频道
3.4种计数模式
4.专用软件:PortAll

产品特点：
AC or battery operation
0.1 μm minimum threshold setting at 0.1 cfm
Two to six size channels
Four counting modes
Process gas model

Introducing the world’s smallest particle counter with true 0.1 micron sensitivity! In the past, if you wanted six size channels and 0.1 micron sensitivity, you had to contend with a large, heavy counter. Now, with a breakthrough in design, Met One gives you battery-operated portability, up to six size channels, and 0.1 micron sensitivity—all in one compact instrument!

The Model 237H displays count data on the front panel as total number of particles (cumulative count) or the particles in each size range (differential count). Four counting modes provide quick answers to measurement questions. The manual mode completes one count cycle then turns the air pump off to prolong battery life. Auto mode repeats the count cycle for the number of cycles programmed to allow unattended monitoring. Concentration mode gives a quick estimate (within seconds) of the particle concentration. Beep mode provides one beep after the count exceeds a selected limit, which is handy for isolating sources of particle contamination such as leaks in filter banks.
Specifications
Minimum Threshold Setting 0.1 μm at 50% counting efficiency
Flow Rate 0.1 cfm (2.83 L/min)
Size Channels Configured at factory for one of the following combinations:
2 channel 0.1, 0.5
4 channel 0.1, 0.3, 0.5, 1.0
5 channel 0.1, 0.2, 0.3, 0.5, 1.0
6 channel 0.1, 0.2, 0.3, 0.5, 0.7, 1.0
Light Source HeNe laser
Coincidence Loss Less than 5% at 120,000 particles/ft3
Factory Calibration Mono-dispersed polystyrene spheres (NIST traceable)
False Count Not more than one count in 5 minutes
Display 7-digit LED
Output RS232C/RS485 for computer
Location Labels 250, appear on printout
Data Storage 500 samples, rotating buffer
Sample and Hold Time 1 second to 24 hours
Count Alarms 1 to 9,999,999 counts each channel
Power 5 watts, +10 V (approx.) (+6 V with battery pack)
Battery Type Rechargeable Ni-Cd
Operating Time 2 hours
Size 6.7" w x 4.5" h x 11.7" d (17 x 12 x 30 cm)
Weight 9.9 lbs (4.5 kg)
Environment Operating 55 to 84°F (12 to 29°C), 10 to 85% relative humidity, non-condensing
Storage -40 to 160°F (-40 to 71°C), up to 98% relative humidity, non-condensing
Accessories Included Isokinetic Probe; Operator’s Manual
Ordering Guide
When ordering, specify:
Power (AC) 100-120 VAC or 220-240 VAC
Number of Size Channels 2 to 6
Optional Accessories
Relative Humidity/Temperature Sensor
Isokinetic Probe
High Pressure Diffuser
External Printer
Particle Vision? PortAll? Software
Carrying/Shipping Case