This values are for technically advanced users:
Presssing keys (4) and (5) simultaneously the TM100
reads the Cold Junction Compensating temperature
(CJC) followed by the current battery voltage (shown
in Volt, “LO BAT” appears continuously (possible
range 2.3 to 3.2V). At anytime the indication “LO
BAT” comes up below 2.4V to warn for replacing
respectively charging the battery.
The battery voltage does not have an impact on the
accuracy. When voltage drops too far the TM100 can
not be turned on any more.
Circone Oxide probes provide a signal depending on
current oxygen concentration and have turned out as
valuable tool when operating gas fired kilns
especially when reduction is required. Formerly the
atmosphere had been estimated by using difficult to
handle diagrams trying to estimate the actual oxygen
or even more difficult the actual grade of reduction.
Your TM100-O2 uses a highly complex combustion
formula to calculate all relevant atmosphere parameters
(oxygen O
2
, carbon monoxide CO, carbon dioxide CO
2
,
air/gas ratio lambda). To enable the TM100 this
calculation some parameters of the combustable need to
be entered in the configuration menue. The temperature
signal of the probe is connected to input A, the O
2
-signal
is lead to input B. Due to physical laws an oxygen signal
is not available on temperatures below 650°C.
Pressing key (5) shows lambda in a range of (0, 0.001
to 9.99). If lambda can not be calculated (e.g. since
temperature is too low) the display reads “ ---”.
Oxygen concentration is shown after pressing key (6)
(display reads “o2” followed by the value in %).
Carbone monoxide is shown after pressing key (7)
(display reads “co” followed by the value in %).
3
Cold Junction Temp & Battery Voltage
A
A
(4)
B
B
(5)
+
LO BAT
LO BAT
after about 1,5 seconds:
TM100-O2 (option)
B
B
(5)
max
max
-
-
(6)
grad
grad
+
+
(7)
lambda 1.0 stands for a 1:1 combustion,
lambda >1.0 means “excess air”, lambda <1.0 “excess
gas” (reduction). A lambda of 0.96 stands for a
medium reduction for instance
