TESTO 420 Manual

testo 420 – volume fl ow hood
0563 4200
1
151 x 84 x 38 mm
-5 ... +50 °C
6 x 3.3 x 1.5 in
+23 ... +122 °F
Display 88,9 mm
Display 3.5 in Display 3.5 in
-20 ... +60 °C
-4 ... +140 °F
2 2
4
4 x 1,5 V, T:
TypAA / +0,1 °C / +0.1 °F
Alkali-
U:
Mangan,
0,1 %RH
Mignon
v:
0,01 m/s /
1.97 fpmv:
1 m³/h
1 cfm
p:
0,1 hPa
0.1 InH O
2
Δp:
0,001 Pa /
0.001 InH O
2
3
5
T:
-20 ... +60 °C / -4 ... +140 °F
U:
0 ... 1 %RH
v:
0 ... 14 m/s / 0 ... 2750 ft/min
V:
50 ... 4000 m³/h /
11 ... 1100 l/s / 30 ... 2350 cfm
p:
+700 ... +1100 hPa
+281 ... +442 InH O
2
Δp:
-120 ... +120 hPa / -48 ... +48 InH
2
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T:
±0,5 °C (0 ... +60 °C) / ±1 °F (+32 ... +140 °F)
±0,8 °C (-20 ... 0 °C) / ±1.4 °F (-4 ... +32 °F)
U:
±1,8 %RH +3 % of mv at +25 °C /
+77 °F (5 ... 80 %RH)
V:
±3 % of mv + 12 m³/h at +22 °C
±3 % of mv + 7 cfm at +72 °F
1013 hPa (85 ... 3500 m³/h)
405 InH O (50 ... 2060 cfm)
2
p:
±1 InH O / ±3 hPa
2
O Δp:
±2 % of mv + 0,5 Pa
at +22 °C, 1013 hPa /
±2 % of mv + 0.002 InH O
2
at +72 °F, 405 InH O
2
0973 4200 04 – 12.2023
3 sec.