Balometer Specifications

  Standard Electronic
(incl. DB 150)		 LoFlo Jr.
Accuracy
Supply
cfm [m³/h]
±3% of full scale
±(3% of reading +7)
[+12]
±(3% + 2)
± [3% + 3.4]
±5% of full scale
Exhaust
cfm [m³/h]
±3% of full scale
±(3% of reading +7)
[+12]
±(3% + 2)
± [3% + 3.4]
±5% of full scale
Temperature
°F [°C]
N/A
±(0.5% of  reading +1)
[+0.5]
N/A
N/A
Range
Supply/Exhaust
cfm [m³/h] 
0–2000
[0–3500]
50–2000 
[85–3400]
10-500
[17-850]
(4.7-236 l/s)
0–1400 
[0–2400]
Velocity (with
175 or 275 probes)
fpm [m/s]
N/A
APM meter only
20–6000 
[0.1–30]
N/A
N/A
Temperature
°F [°C]
N/A
32–122 
[0–50]
N/A
N/A
Resolution
Volume
5 cfm fr 25–200 cfm
10 cfm from 100–500 cfm
20 cfm from 400–1000 cfm
50 cfm from 800–2000 cfm

10 m³/h from 50–350 m³/h
10 m³/h from 200–900 m³/h
25 m³/h from 700–1700 m³/h
50 m³/h from 1400–3400 m³/h
0.1 cfm from 50–1000 cfm
1 cfm from 100–2000 cfm

0.1 m³/h from 85–100 m³/h
1 m³/h from 100–3400 m³/h
1 cfm from 10-500cfm

1 m³/h from 17-850 m³/h

0.1 l/s from 4.7- 9.9 l/s
1 l/s from 10 to 236 l/s
10 cfm from 0–200 cfm
20 cfm from 100–600 cfm
50 cfm from 400–1400 cfm

20 m³/h from 0–340 m³/h
50 m³/h from 200–1000 m³/h
100 m³/h from 1000–2400 m³/h
Velocity
(with 175 or
275 probes)
N/A
APM meter only
0.1 fpm from 20–100 fpm
1 fpm from 100–6000 fpm

0.001 m/s from 0.1–1 m/s
0.01 m/s from 1–10 m/s
0.1 m/s from 10–30 m/s
N/A
N/A
Temperature
N/A
0.1°F or °C
N/A
N/A
Relative Humidity
(with 220B probe)
N/A
APM meter only
0.10%
N/A
N/A
Pressure Drop Across Instrument
at 500 cfm
[850 m³/h]
0.01 in. H2O [2.5 Pa]
0.01 in. H2O [2.5 Pa]
N/A
0.01 in. H2O [2.5 Pa]
Display
 
Precision-balanced 
meter movement
0.45 in high, 4-digit,
7-segment 

0.15 in.. high, 2.5-digit,
7-segment
memory indicator
and 19 parameter
indicators
3.5 digit, 0.44 in.
(11 mm) high,
digital display 
with 26 segment 
simulated
analog display
Precision-balanced 
meter movement
Hood Sizes
 
16 x 16 in., 2 x 2 ft,
2 x 4 ft, 1 x 4 ft
1 x 5 ft, 3 x 3 ft

(406 x 406 mm,
610 x 610 mm,
610 x 1220 mm,
305 x 1220 mm,
305 x 1525 mm,
915 x 915 mm)
16 x 16 in., 2 x 2 ft,
2 x 4 ft, 1 x 4 ft,
1 x 5 ft, 3 x 3 ft 

(406 x 406 mm,
610 x 610 mm,
610 x 1220 mm,
305 x 1220 mm,
305 x 1525 mm,
915 x 915 mm)
16 x 16 in., 2 x 2 ft,
26 x 26 in.

(406 x 406 mm,
610 x 610 mm,
650 x 650 mm)
2 x 2 ft, 16 x 16 in.

(610 x 610 mm,
406 x 406 mm)
Overall Dimensions
 
Height 40 in.;
base 17 x 17 in.;
width and depth
variable

Height 1017 mm;
base 432 x 432 mm;
width and depth
variable
Height 36 in;
base 20 in. dia.

Height 914 mm;
base 508 mm dia.
Height (base only)
15.5 in.

Height with 2 x 2 ft
hood 34.5 in.

Height with 16 x 16 in.
hood 22 in.

Top opening
13.3 in. dia.
Height 34 in.
with 2 x 2 ft hood

Height 864 mm with
610 x 610mm hood

Base 14 x 14 in.
(360 x 360 mm)
Detached Meter Dimensions
 
N/A
7.5 x 3.2 x 1.3 in.
(190 x 80 x 33 mm)
N/A
N/A
Detached Meter Weight
 
N/A
11 oz. (315 g)
N/A
N/A
Packaged Dimensions
 
29 x 14 x 25 in.
(737 x 356 x 635mm)
20 x 26 x 7 in.
(737 x 356 x 635mm)
20 x 20 x 20 in.
(508 x 508 x 508 mm)
(57 x 66 x 18 cm)
Operating Weight
 
9.8 lbs (4.5 kg) with
2 x 2 ft hood
APM 150
8.7 lbs (4 kg) with
2 x 2 ft hood

DB 150
9.5 lbs (4.3 kg) with
2 x 2 ft hood
Approx. 6 lbs
(2.7 kg) with hood

4.6 lbs (2.1 kg)
base only
6.9 lbs (3 kg)
Packaged Weight
 
less than 39 lbs
(18 kg)
less than 29 lbs
(13 kg)
15 lbs
(6.8 kg)
18 lbs
(8 kg)
Measurement Units
 
cfm: cubic feet per min.
m³/h: cubic meters per hr
l/s: liters per second
Standard on
APM 150
fpm: feet per minute
fps: feet per second
mph: miles per hour
m/s: meters per second
km/h: kilometers per hour
Rh: Relative humidity
cfm: cubic feet per min.
m³/h: cubic meters per hr
l/s: liters per second
F: degrees Fahrenheit
C: degrees Celsius
cfm: cubic feet per min.
m³/h: cubic meters per hr
l/s: liters per second
cfm: cubic feet per min.
m³/h: cubic meters per hr
l/s: liters per second
Power Source
 
N/A
APM meter only--
3 AA, 1.5V,
alkaline batteries

DB 150 meter--
3 AA, 1.5V, alkaline
batteries and 4 C batteries
4 C, 1.5V,
alkaline batteries

(optional Nickel
Cadmium)
N/A
Battery Life
 
N/A
10 hrs. min. with
continuous use
10 hrs. min. with
continuous use
N/A
Memory Capability
 
N/A
APM only
Up to 100 readings
N/A
N/A
Summing
 
N/A
APM only
99 x 109 in all units
N/A
N/A