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IMPAC pyrometer IP 140-LO
double storage: when entering the reset intervals via push buttons or PC interface the double storage is
automatically selected. This mode utilizes two memories in which the highest measured value is held and is
deleted alternately in the time interval set (clear time). The other memory retains the maximum value
throughout the next time interval. The disadvantages of fluctuations in the display with the clock frequency
are thereby eliminated.
Note:
The maximum value storage follows the function of adjustment of exposure time.
This results in: • clear time ≤ the adjusted response time is useless
9.5
Analog output (mA)
The analog output has to be selected according to the signal input of the connected
instrument (controller, PLC, etc.).
9.6
Subrange (from / to)
You have the opportunity to choose a subrange (minimum 51°C) within the basic measuring range of the
pyrometer. This subrange corresponds to the analog output. "from" describes the beginning of this measur-
ing range, "to" the end of the range.
Additionally with the setting of a subrange it is possible to fulfill the requirements of the "auto" clear mode of
the maximum value storage (see above).
9.7
Address (Adr)
For the connecting of several pyrometers with RS485 with one serial interface it is
necessary to give each instrument an individual address for communication. First it is
necessary to connect each single instrument to give it an address. After that all instru-
ments can be connected and addressed individually. If parameters may be changed
simultaneously on all pyrometers, the global Address 98 can be used. This allows you to program all py-
rometers at the same time, regardless of the addresses that have already been assigned. If the address of a
pyrometer is unknown, it is possible to communicate with it using the global Address 99 (connect only one
pyrometer).
9.8
Baud rate (Baud)
The transmission rate of the serial interface in Baud (Bd) is dependent on the length of
the cable. A standard cable length with RS232 for 19200 Bd is 7 m, with RS485 2 km.
The baud rate is reduced by 50% if the transmission distance is doubled.
9.9
Temperature display (C / F)
The temperature can be displayed in °C or °F.
9.10
Wait time (tw)
Using a pyrometer with RS485 it is possible that the connection is not fast enough to
receive the pyrometer's answer to an instruction of the master. In this case a wait time
can be set to slow down the data transfer (e.g.: tw = 02 at a baud rate 9600 means a
2
wait time of
/
sec).
9600
9.11
Maximum internal temperature (MaxIntTemp)
Shows the maximum internal temperature the device ever reached.
• clear times must be at least 3 times longer than the response time
• only maxima with full maximum value can be recorded, which
appear at least 3 times longer than the response time.
Settings:
0 ... 20 mA
4 ... 20 mA
Settings:
00
. .
.
97
Settings:
2.4 kBd
. .
.
115.2 kBd
Settings:
°C
°F
Settings:
00 Bit
. .
.
99 Bit
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