TESTO 6681 Instruction Manual page 13

- after exchanging the unit, the measuring range recorded in the
instrument is applied as standard.
The transmitter even retains its scaling with the voltage
disconnected.
Measuring range, see table (below).
3 The maximum settings for the manual scaling
- the values are not expressly given in the table. The maximum limits
can be calculated as follows:
X = difference between MIN. and MAX. value of the standard scaling
(Max. value of standard) + (50 % of X)
(Min. value of standard) - (50 % of X)
- It is thus possible to scale beyond the measuring range, e.g. for the
adjustment of the scaling limits to standard values of a PLC.
However, the physical measurement range limits are the deciding
factor when defining alarms.
Parameter
Temperature
relative humidity
WMO relative humidity
Unit probe
°C 6611
°F 6611
°C 6612
°F 6612
°C 6613
°F 6613
°C 6614, 6617
°F 6614, 6617
°C 6615
°F 6615
% RH
% RH,
testo 6681
- 1.2 Product description 13
Measuring
range
Physical
at 1013 hPa
MIN MAX
-20
-4 +158
-30 +150
-22 +302
-70 +180
-94 +356
-40 +180
-40 +356
-40 +120
-40 +248
0 +100
0 +100
Standard
scaling
MUF
measuring
range
MIN MAX
+70 -20 +70
-4 +158
-30 +150
-22 +302
-40 +180
-40 +356
-40 +180
-40 +356
-40 +120
-40 +248
0 +100
0 +100