testo 6681 Profibus
18
Parameter
Temperature
relative humidity
WMO relative humidity
Mixture humidity H
Dewpoint
Mixture dewpoint (H2O2)
Absolute humidity
Degree of humidity
Enthalpy
Psychrometer temperature
- 1.2 Product description
Unit
°C
°F
°C
°F
°C
°F
°C
°F
°C
°F
% RH
% RH
O
% RH
2
2
m
°Ctd
°Ftd
°Ctd
°Ftd
°Ctd
°Ftd
°Ctm
°Ftm
g/m3
gr/ft3
g/kg
gr/lb
kJ/kg
BTU/lb
°Ctw
°Ftw
Probe
at 1013 hPa
MIN
6611
6611
6612
6612
6613
6613
6614, 6617
6614, 6617
6615
6615
6611
6611
6612, 6613, 6614,
6617
6612, 6613, 6614,
6617
6615
6615
all probes
all probes
Standard
scaling
Measuring
MUF
range
measuring
Physical
range
MAX
MIN MAX
-20
+70
-20
-4
+158
-30
+150
-30
-22
+302
-22
-70
+180
-70
-94
+356
-94
-40
+180
-40
-40
+356
-40
-40
+120
-40
-40
+248
-40
0
+100
0
+100
0
100
-20
+70
-80
-4
+158
-112
-20
+100
-80
-112
+212
-112
-60
+30
-80
-148
+212
-112
-20
+100
-20
-4
+212
0
600
0
250
0
13300
0
93000
-40
99999
-40
-18
43000
-18
-40
100
-40
-58
210
-40
+70
-4
+158
+150
+302
+180
+356
+180
+356
+120
+248
0
+100
0
+100
0
100
+100
+212
+100
+212
+100
+212
+100
-4
+212
0
2000
0
800
0
9500
0 66500
8000
3500
180
356