MAL-PT100
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MAL-PT100 / MAL-PT1000 Miniature Amplifiers for Temperature (PT100 / PT1000) Perfectly Conditioned. Temperature. Resistance signals of a PT100 sensor can optimally be adjusted to the input of a PC data acquisition system with the miniature measuring amplifier MAL-PT100 / MAL-PT1000. A perfect solution for temperature measurements in the range of -60° … 300°C. A 1mA sensor supply is provided for connected sensors. Minimum Size. Great Performance. Small Price. The miniature format of the temperature measurement amplifier is ideal to realize measurement applications even if the installation is in problematic locations. Despite the small size, the measuring amplifier features great functionality. All this at a reasonable price. Resistance Measurement. Linearization. Amplification. The MAL-PT100 e.g. MAL-PT1000 measures the resistance of a PT100 or PT1000 sensor. As the signal values of the sensor are not linear, the temperature measurement amplifiers takes care of linearization providing a proportional voltage in the range of -1..5V at the output. Functional diagram 2-, 3-, or 4-Wire Technology. Depending on the demands concerning measuring accuracy, 2-, 3-, or 4-wire measurement is possible with the MAL-PT100 / MAL-PT1000. Very easy to configure with solder jumpers on the measuring amplifier. Compatibility. The MAL series provides a great variety of measuring amplifiers, measuring converters, or filter modules. They can be used in any combination allowing for the solution of the most individual measuring tasks. Get Connected. With the backplanes of the BP series varying in size and design, signal connection is easy. The modules just have to be plugged on the relevant slot of the backplane

1 Installation The measuring amplifier is plugged onto a 24-pin socket. If the marking of the socket is on the left, pin 1 is bottom left. Check for correct poling. Change modules only at no load! Ansicht von unten/ Ansicht von oben/ Bottom view Top view 2 Pin Assignment The pin assignment of the MAL-PT100 / MAL-PT1000 is illustrated in the figure above and in the following table. J Please note the line resistance when connecting 2-wire technique to a PT100 sensor. It leads to a distortion of the measurement result. These faults can be avoided with using 3-wire - or even better -...

4 Interfacing Examples The module output is proportional to the input voltage in all operating modes and ranges. Apply cable shield at one end only. If earthing is required, connect the screen only at one end, otherwise there is a risk of hum pick-up. 4.1 PT100 / PT1000 Measurement - 2-Wire Technique PT100 measuring resistors are not linear, but are linearized and offset adjusted by the MAL-PT100 / MAL-PT1000. At temperatures below 0°C, the temperature measurement amplifier provides negative output voltages. The module is pre-calibrated ex works for 2-wire measurement (PL3 + PL4 closed)....

The following MAL modules and BP backplanes from bmcm are available: 6 Important Notes for Using the MAL-PT100 • The MAL-PT100 / MAL-PT1000 is only suitable for extra-low voltages - please observe the relevant regulations! • Only use an electrical isolated power supply unit (with CE). • Turn off the power before mounting the module onto the carrier board. • All accessible pins are electrostatic sensitive devices. Provide for a grounded conductive work place. • MAL-PT100 / MAL-PT1000 must only be operated in closed housings (for reasons relating to EMC). • Only use non-solvent...