CEM DT-186 User manual

1
User manual
Model: DT-186
Product introduction
This product is an Anemometer Datalogger, which tests the air velocity of a particular place and records
32,000 readings at most, the measuring range is 1.1 to 20.0m/s, User can set up the sampling rate,
high/low alarm value and start mode and can also operate the software in windows 98, 2000, XP, vista or
win 7 system to download the data to PC by USB interface, then draws graphics by the data, realizing
print and data output function. The datalogger provides a lithium battery of one year’s service life; its
function mode is indicated by red, yellow and green LED light flash.
Description
1. Cover
2. USB interface
3. Button
4. Indicator light
5. Fan sensor

2
Features
Memory for 32,000 readings
Draw graphics curve by the data through the PC software
Selectable sampling interval: 2s, 5s, 10s, 30s, 1m, 5m, 10m, 30m, 1hr, 2hr, 3hr, 6hr, 12hr, 24hr
Operating status indicated by red, yellow and green LED light
Data download to PC software by USB interface
Too low/too high alarm value setup
Two modes (manual and automatic) to start recording data
Low battery alarm
Sensor: fan sensor
Operating temperature: 32 to 122°F (0 to 50°C)
Operating humidity: <80% RH
Operating height: 2000 meters (7000ft) maximum
Weight: 49g
Size: 145x 35 x 30mm
Air Velocity
Range
Resolution
Accuracy
M/S(meters per sec)
1.1 - 20.00 m/s
0.01 m/s
± (3% + 0.20 m/s)
KPH (kilometers/hour)
0.8- 72.0 km/h
0.1 km/h
± (3% + 1.0 km/hr)
FPM (feet per minute)
80 –3937 ft/min
1 ft/min
± (3% + 40 ft/m)
MPH (miles per hour)
0.9–44.8 mph
0.1 mph
± (3% + 0.4 MPH)
KNT (nautical MPH)
0.8 to 38.8 knots
0.1 knots
± (3% + 0.4 knots)

3
LED status guide
LEDs
Indication
No LED light flash
-logging not active
-wrong installment of battery
One green flash every 10 seconds (20s or 30s)
-logging, no alarm
Green double flash every 10 seconds (20s or 30s)
- manual mode to start logging(press yellow button, green and yellow lights
flash, start logging)
One red flash every 10 seconds (20s or 30s)
-logging, low alarm for measurement value
Red double flash every 10 seconds (20s or 30s)
-logging, high alarm for measurement value
Yellow single flash every 10 seconds
-low battery alarm
Yellow single flash every 1 second (5s,10s or 15s)
-logging finished
note：10s（20s or 30s）can be set up by PC software.
Equation transformation
Measuring unit equivalent table:
1 M/S
1 FPM
1 KNT
1 KPM
1 MPH
1 M/S
1
196.87
1.944
3.6
2.24
1 FPM
0.00508
1
0.00987
0.01829
0.01138
1 KNT
0.5144
101.27
1
1.8519
1.1523
1 KPM
0.2778
54.69
0.54
1
0.6222
1 MPH
0.4464
87.89
0.8679
1.6071
1