Compressed Air Flow Transmitter (2″ line)$1,230.00 For Testo 6440 Call us for a quote Product Model: 0555 6444 Compressed Air Flow Transmitter (2" line) quantity Add to cart SKU: 0555 6444 Category: Testo Sensors Parts & Accessories Tag: Testo Sensors Parts & Accessories Description Description For Testo 6440 Related products SO2 replacement sensor (0-5000 ppm 1 ppm resolution)0 out of 5 $525.00 Add to cart Probe extension cable 16′0 out of 5 $135.00 Add to cart SO2 replacement sensor (0-5000 ppm)0 out of 5 $986.00 Add to cart