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MiniKnowz™

Intelligent Gas Sensor Module

FEATURES

- MOS Sensor & HCMOS microcontroller -Hydrogen, methane & propane versions- 0-50% LEL measurement- 200/400 ppm logical resolution- 30 seconds start-up time - 4 secs. T90 response time- 10 secs. T10 recovery time- Normal, Warning, Alarm & Error states- Table look-up (software) linearization- Bi-color LED status indicator- Optional 0-to-5V proportional output (6 bit)- Optional binary operation (TTL output)-Optional voltage-encoded states (step function)- Optional reading hysteresis MiniKnowz™ - PK-Port™ compatible digital communications- User-settable alarm/warning via PK-Port™ - Digital FLASH-based calibration- Each device factory pre-calibrated- Field re-programmable firmware--40 to +80 Celsius active compensation- Sensor & temperature error detection - 5VDC @ 80mA (400 mW) operation (I1)- Optional 7-40VDC input power version (I2)- Optional 7-60VDC input power version (I3)- 41mm x 38mm x 29mm enclosure size

DESCRIPTION

The MiniKnowz™ is an intelligent gas sensor module intended for safety applications in power generation equipment. Linearmeasurement of hydrogen, methane, and propane concentrations is possible up to 50% LEL with 200ppm resolution (propane) and 400 ppm resolution (hydrogen and methane).The devices are actively temperaturecompensated from–40 to +80 degrees C. Each device is factory calibrated for accuracy and linearity. Calibration values are FLASH memory-based and are field-adjustable viaNeodym’s

BLOCK DIAGRAM

PK-Port™ PC interface. The device operates at 5VDC and consumes about 400mW. Wide input supply versions are available.

InterfaceConnector DigitalComms.
* Gas Sensor MC68HRC908 HCMOSMicrocontroller Temp. Sensor DAC
* 6 Bi-color LED 7– 40VDC 5VDC Switch-ModePower Supply
* SystemPower
*Optional