Double Display; Peak Value Memory - Ahlborn ALMEMO 2490-1A Operating Instructions Manual

10. Measuring operations
Transducers
Enthalpy, psychrometric with PC
Conductivity probe, with TC
CO sensor
2
O saturation with TC and PC
2
O concentration with TC
2
Function channels:
Differential channels Mb1 - Mb2
Maximum value of channel Mb1
Minimum value of channel Mb1
Av. val. M(t) over time of Mb1
Av. value M(n) of Mb2 to Mb1
Sum S(n) of Mb2 to Mb1
Total pulses S(t) of Mb1
Pulses / print cycle of Mb1
Alarm value of channel Mb1
Wet bulb globe temperature
Measured value of Mb1
Cold junction temperature
Number of av. values of Mb1
M ̅
Volume flow m /h (Mb1)*Q
3
Timer
TC = Temperature compensation

Double display

10.1.3
On all double sensors incorporating a temper-
ature sensor on the 1st channel the tempera-
ture value can at the same time be displayed
in the function field.
Select 2nd channel
Activate temperature display
Return to channel display

Peak value memory

10.2
From the measured values acquired for each
measuring point the highest and the lowest val-
ues are continuously recorded. To display
these high / low peak values first the desired
channel must be set (see Section 7.1) and then
the or
MAX MIN
check the display also includes the associated symbol.
To display the maximum value press key :
To display the minimum value press key :
22
Sensor / con-
nector
FN A846
FY A641-LF
FY A600-CO2
FY A640-O2
FY A640-O2
any
any
any
any
any
any
ZA 9909-AK2
ZA 9909-AK2
any
ZA 9030-FS
any
any
any
any
any
PC = Air pressure compensation
Press and hold down
Press and hold down
key must be pressed. As a
Measuring range Units Abbre-
0.0 ... 400.0
0.0 ... 20.000
0.0 ... 2.500
0 ... 260
0 ... 40.0
0... 65000
0... 65000
M▲
M▲
.
MAX
.
MIN
viation
kJ P En
mS LF
% CO2
% O2-S
mg O2-C
diFF
Hi
Lo
A[t]
A[n]
S[n]
S[t]
S[P]
Alrn
°C
UbGt
MESS
°C
CJ
n(t)
mh
FLou
s
tinE