Measuring sensitivity: LD- 5C（L） 1 CPM = 0.01 mg/m3;
LD- 5C（H） 1 CPM = 0.001 mg/m3.
Measuring range: LD- 5C（L） 0.01 ~ 100 mg/m3;
LD-5C（H） 0.001~10 mg/m3.
Measuring time interval: standard time 1 minute. 0.1 minutemanual timing also delivered. Manual timing can set sampling time from 1 to 9999.
Measuring accuracy: ±10%.
Display screen: character LCD
Continuous monitoring: setting measuring time （1 ~ 9999） seconds, waiting time （0 ~ 9999） seconds, sampling number（1 ~ 9999） times
Data Storage:
General measurement: cycle 99 data storage （each group including : quality concentration, measure date, time, recording sequence number）
Labor Hygiene: cycle 30 data storage （each group including : sampling date, starting time of sampling, using K value, measurement cycle, TWA value, STEL value, recording sequence numbers）,measurement data of dust concentrations every minute in "Labor hygiene" model （CPM）, 1440 data stored （24 hours） －－ read through PC.
Continuous monitoring: maximum storage 9999 data －－ read through PC
Alarm mode: set threshold concentration, voice alarm exceeding it
Output interfaces:
Serial interface for PC communication: RS 232;
Power supply: Ni – MH rechargeable batteries group （1.2 V ´ 6）, capacity for 8 hours, 220 V AC / 12 V DC adapter also provided.
Dimensions: 200×109×135mm
Weight: 2 kg .
