Thermistor Pod

Overview:

The ML309 Thermistor Pod is suitable for biological measurements such as skin and nasal temperature and respiration detection in the range 5°C to 45°C. It also supports both absolute and relative temperature measurements. A DC offset provides the means for differential thermometry with resolutions of 0.001°C.

Compatible transducers include the:
MLT422/A Skin Temperature Probe (2 m)
MLT415/A Nasal Temperature Probe
MLT415/M Thermistor Temperature Sensor

The ML309 Thermistor Pod is not galvanically isolated.

Hardware:
ADInstruments signal conditioners only function with PowerLab data acquisition units and therefore are not suitable for use with other data acquisition systems.

Features:

• Voltage amplification to produce 50 mV/°C within the temperature range 5°C to 50°C.
• A 3-pole 10 Hz low-pass filter to reduce noise bandwidth.
• A switchable offset circuit which provides a delta temperature mode for relative temperature measurement.

Applications:

The Thermistor Pod is suitable for biological temperature measurements such as skin temperature measurements, nasal temperature and respiration detection.

Specifications:

• Thermistor type: 10 kΩ @ 25 °C
• Measurement ranges: 5 °C to 45 °C in absolute mode Δ1 °C to Δ20 °C in five ranges with Delta Temp on
• Output voltage: 50 mV/°C (0 mV = 25 °C)
• Temperature accuracy: ±0.2 °C absolute (25 °C to 45 °C)
• DC drift: 3 μV/°C
• Response time: ~200 ms (for a full scale change in temperature)
• Overall response will be dependent on the thermal response of thermistor probe
• Temperature offset range: 50 °C overall (–5 °C to 45 °C absolute)
• Input connector: 3-pin mini audio connector
• Enclosure size: 108 x 58 x 35 mm (l x w x h)
• Weight: ~200 g

All specifications were tested at the time of printing and are subject to change.