Our new plug-in digital multi-sensor module, with its miniature design and extremely low energy consumption, combines the measurable variables – temperature, atmospheric humidity, and atmospheric pressure. It takes a complete reading of all these ambient parameters and can thus accurately determine all humidity-related and pressure-dependent variables, e.g. the frequently needed mixture ratio (r).It communicates its findings via an I2C interface; the user can selectively access individual sensor variables and data saved to the integrated EEPROM.
Before leaving our factory the sensor module is adjusted and assigned an electronic identification code that can be read out on receipt of the appropriate command. The integrated EEPROM can be used to save the user’s own adjustment data, fine tuning, or electronic ID data (ID number, comments text, etc.). Since the saved parameters are retained in the EEPROM, a multisensory module can only be exchanged or replaced with modules that are identically calibrated and have all the same data. The module is specially designed with very good thermal isolation to withstand temperature influence / thermal conduction and thus ensure that all variables are measured precisely. This system – unlike analogue measured value processing – virtually excludes the risk of varying line lengths or disturbance factors adversely affecting the accuracy of measured results.
|Temperature Range||-40 to +85°C|
|Accuracy||+5 to +60°C - typical ±0.2 K|
+5 to +60°C - maximum 0.4 K
-20 to +85°C - maximum 0.7 K
|Reproducibility||Typical ±0.1 K|
|Humidity Range||5.0 to 98.0% RH|
|Accuracy||10 to 90% RH, maximum ±2% RH|
at 23°C ±5 K
5 to 98% RH, maximum ±4% RH
at 23°C ±5 K
|Hysteresis||Typical ±1% RH|
|Pressure Range||300 to 1100 mbar|
|Accuracy||700 to 1100 mbar, ±2.5 mbar at 23 °C ±5 K|
|Internal Memory||Two-wire serial EEPROM |
4 kbit (512 x 8 bit)
|I2C Interface Data Rate||0 to 400 kHz|
|Sampling Rate||2/sec at highest resolution|
|Power supply||2.1 to 3.6V - typical 3.3V|
|Current consumption||During measuring typical 310μA|
In standby typical 0.35μA
|Energy consumption||During measuring typical 1.02mW|
In standby typical 1.16μW
|Connection||Male strip connector, 4-pin,|
Spacing 1.27 mm
see pin assignment
|Lead free, halogen-free and RoHS compliant (restriction of hazardous substances)|
- Measured values can be recorded using a chart recorder or a similar output device.
- A signal converter is integrated in the connector.
- The device signal is converted into a voltage corresponding to the linearized measured value.
- To obtain a high response speed a conversion rate of 10 mops can be set in the ALMEMO® device.
- The output signal can be scaled as required..