Measured Value; Selecting A Measuring Point; Measuring Ranges - Ahlborn ALMEMO 2490-2 Operating Instructions Manual

10. Measuring operations

10.1 Measured value

After switching ON first of all a segment test is
performed; then the battery voltage appears
and if the batteries are almost empty (<3.6 V)
the LOBAT arrow also appears.
The measured value is then displayed with the
appropriate units in the main field and the
measuring point is displayed in the function
field. All special operating states possible for
the measured value are explained in Section
9.1.

10.1.1 Selecting a measuring point

By pressing key
points and have the current measured value displayed for each. By pressing
M ▼
key you can return to the previous channel.
To increment the measuring channel press key :
To decrement the measuring channel press :
When switching between channels the abbreviation for the measuring range is
briefly displayed; (see 10.1.2).

10.1.2 Measuring ranges

With each channel switchover or sensor breakage the abbreviation for the
measuring range appears in the display. For identification purposes the follow-
ing table lists all possible measuring ranges.
Transducers
Pt100-1
Pt100-2
Ni100
NiCr-Ni (K)
NiCroSil-NiSil (N)
Fe-CuNi (L)
Fe-CuNi (J)
Cu-CuNi (U)
Cu-CuNi (T)
PtRh10-Pt (S)
PtRh13-Pt (R)
PtRh30-PtRh6 (B)
20 ALMEMO
M ▲
you can select one after the other all active measuring
Sensor / con-
nector
FP Axxx
FP Axxx
ZA 9030-FS3
FT Axxx
ZA 9020-FSN
ZA 9000-FSL
ZA 9000-FSJ
ZA 9000-FSU
ZA 9000-FST
FS Axxx
ZA 9000-FSR
ZA 9000-FSB
2490
®
M ▲
M ▼
Measuring range Units Abbre-
-200.0... +850.0
-200.00...+400.00
-60.0... +240.0
-200.0...+1370.0
-200.0...+1300.0
-200.0... +900.0
-200.0...+1000.0
-200.0... +600.0
-200.0... +400.0
0.0...+1760.0
0.0...+1760.0
+400.0...+1800.0
viation
°C P104
°C P204
°C N104
°C NiCr
°C NiSi
°C FECO
°C IrCo
°C CUCO
°C CoCo
°C Pt10
°C Pt13
°C EL18