Alnor APM 150, Owner'S Manual, Page: 24 / 78

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APPENDIX E:
OPTIONAL PROBES SPECIFICATIONS
Model 175 and 275 Probe Specifications**
Range
Temperature
32–122
°
F (0–50
°
C)
Air Velocity
20–6000 fpm (0.1–30 m/s)
Accuracy
Temperature
68–86
°
F (20–30
°
C)
±
0.5% of reading
±
1
°
F (0.5
°
C)
Rest of temperature range
±
5% of reading
±
1
°
F (0.5
°
)
Velocity
Standard Conditions
20–100 fpm (0.1–0.5 m/s)
±
5 fpm (0.03 m/s)
101–700 fpm (0.5–3.5 m/s)
±
3% of reading
±
2 fpm—(0.01 m/s)
701–4000 fpm (3.5–20 m/s)
±
3% of reading
±
20 fpm—(0.1 m/s)
4001–6000 fpm (20–30 m/s)
±
3% of reading
±
200 fpm—(1.0 m/s)
Non-Standard Conditions—
Additional Errors
20-200 fpm (0.1–1.0 m/s)
±
0.1 fpm per degree F
(
±
0.02 m/s per degree C
201–6000 fpm (1.0–30 m/s)
±
0.1% of reading per degree F
(
±
0.06% of reading per degree C)
Storage
Temperature
-40–150
°
F (-40–65
°
C)
Dimensions
175 Probe Tube
11.8 in (300 mm) length
0.35 in (9.0 mm) diameter
Sliding metal sleeve for sensor
protection
275 Probe Tube
20.0 in (508 mm) length retracted
45.0 in (1143 mm) length extended
0.35 in (9.0 mm) diameter
Telescoping and articulating to
±
90
°
with locking nut
Weight
175 Probe
8 oz (227 g)
275 Probe
12 oz (340 g)
Operating
Temperature
of Heated
Thermistor
Approximately 194
°
F (90
°
C)
Note: There are no batteries in the 175 or 275
probes.