|
|
 |
Model 975 Air Meter - Specifications |
|
|
|
|
|
|
Temperature |
Range: |
-20°C to 50°C
(-5°F to 122°F) |
|
Display Resolution: |
0.1°C (0.1°F) |
|
Accuracy:
|
±0.9°C
(±1.62°F)
from 40°C to 60°C |
|
±0.5°C
(±1.00°F)
from 5°C to 40°C |
|
±1.1°C
(±1.98°F)
from -20°C to 5°C |
|
Relative Humidity |
Range: |
10% to 90% RH, non-condensing |
|
Display Resolution: |
1% |
|
Accuracy: |
±2% RH (10%
RH to 90% RH) |
|
Air Velocity |
Range: |
50.0 fpm to 3000 fpm (0.25 m/sec to 15
m/sec) |
|
Display Resolution: |
1 fpm (0.005 m/sec) |
|
Accuracy:
|
±4% or 4
fpm* |
|
±4% or 0.02
m/sec* whichever is greater |
|
Note* Accuracy specification only valid
for velocity readings above 50fpm. |
|
CO |
Range: |
0 to 500 ppm |
|
Display Resolution: |
1 ppm |
|
Accuracy: |
±5% or
±3 ppm, whichever is greater, @ 20°C
and 50% RH |
|
CO2 |
Range: |
0 to 5000 ppm |
|
Display Resolution: |
1 ppm |
|
Accuracy: |
Warm up time 1 min (5 minutes for full
specification) 2.75% + 75 ppm |
|
|
|
|
|
| Calculated
Specifications |
|
|
Dew Point Temperature |
Range: |
-44°C to 50°C
(-47°F to 122°F) |
|
Display Resolution: |
0.1°C (0.1°F) |
|
Accuracy: |
±1°C
when temperature: -20°C to 50°C
RH: 40% to 90% |
|
|
±2°C
when temperature: -20°C to 50°C
RH: 20% to 40% |
|
|
±4°C
when RH: 10% to 20% |
|
Wet Bulb Temperature |
Range: |
-16°C to 50°C
(3°F to 122°F) |
|
Display Resolution: |
0.1°C (0.1°F) |
|
Accuracy: |
±1.2°C
when RH: 20% to 90% Temp: -20°C to 60°C |
|
|
±2.1°C when
RH: 10% to 20% |
|
Volume Flow Rate (in a duct) |
Range: |
0 to 3,965 M3/m, (0 to 140,000 cfm) |
|
Display Resolution: |
0.001 M3/min, (1 cfm) |
|
Accuracy: |
N/A: The volume flow calculation will be
a simple average of the data points times the duct area. |
|
% Outside Air (based on temperature) |
Range: |
0 to 100% |
|
Display Resolution: |
0.1 |
|
% Outside Air (based on CO2) |
Range: |
0 to 100% |
|
Display Resolution: |
0.1% N/A |
|
|
|
|
|
|
General Specifications |
|
Operating and storage Temperature |
-20°C to 50°C
(-4°F to 122°F) |
|
Humidity |
10% to 90% RH, non-condensing |
|
Altitude |
up to 2000 meters (6562 ft) |
|
Shock and Vibration |
MIL-PRF-28800F: Class 2 |
|
Multi-language Interface |
English, French, Spanish, Portuguese and
German |
|
Battery |
Rechargeable Li-ion (primary), three
'AA' Alkaline batteries (backup) |
|
Data Logging |
25,000 records (continuous), 99 records
(discrete) |
|
Warranty |
Two-years |
|
|
