EDGEMONT, PA – Our principal, MSA, unveiled the HF Ultima X Monitor transmitters and replacement sensors on July 25th. This comes after MSA suspended its offer of new Ultima X Monitor’s configured to monitor HF last year.

The gas code 26 (HF 0-10 ppm) for new Ultima X Monitors, as well as replacement sensors, will be available for order immediately. All new orders will include a 1-year warranty on the sensor.

The announcement intended for Ultima X Series Gas Monitor users comes with a new recommended calibration procedure for Ultima X Monitor transmitters and replacement sensors calibrated to monitor Hydrofluoric Acid (HF). In an effort to optimize performance with the electrochemical sensor, MSA’s applications testing shows that Hydrogen Chloride (HCI) is a better calibration stimulant in areas with high relative humidity than Sulfur Dioxide (SO2).

As a result of this, the following equipment and instrument settings can be used to calibrate the all-new HF Ultima X Monitor transmitters and replacement sensors:

Calibration Kit: Calibration Gas:


Span Value:


Replacement cylinder

A-CAL-54-F-10053747-00-0-0000010 ppm HCI

1.5 liters per minute

9 ppm




If you have any questions regarding the new HF transmitters and sensors or the new recommended calibration procedure, please contact our Product Champion, Lou Buoscio, via email at lou.buoscio@easterncontrols.com or by phone at 610-325-4600. 

About Eastern Controls:

Since 1969, Eastern Controls has been the Mid-Atlantic’s premier manufacturers’ representative, distributor, and service provider of process measurement and control equipment. Our expertise covers all primary process variable measurements including flow, pressure, level, temperature and liquid analytical as well as gas detection, control valve, and isolation valve applications.

The foundation of our success is our dedication to customer service, extensive product offerings, and our outstanding sales, technical, and applications support.  We look forward to working with you!