ProtiSen™ mdoules use catalytic sensors to measure hydrogen in air up to 40,000 ppm (4% volume) with 200 ppm resolution.

These sensors feature VOC filters, good long term stability, native linearity, increased tolerance of silicone-based contaminants, and are immune to overexposure damage.

Options include 3VDC (regulated) or 5-16VDC operation and 0-3VDC proportional, voltage-encoded state, TTL, or 2A/60V open drain output signal.