Teledyne Hastings Instruments Blog

Time for another blog in our “Employee Spotlight Series.” This time we will meet Rob Milversted. Rob has worked for Teledyne for over 20 years, and he is the Director of Sales for Process Instruments and Systems (Teledyne Hastings Instruments and Teledyne Analytical Instruments).

Let’s ask Rob some questions and get to know him better.

Tell us a little about your background.

I’m a SoCal boy. I’ve lived most of my life in Chino. I attended Cal Poly Pomona and studied Electrical Engineering as an undergrad. I was always shocking myself with things around the house a as kid, so Electrical Engineering just seemed right.

Tell us about your start at Teledyne.

I got a job as an Electrical Engineering Intern at Teledyne Analytical Instruments (TAI) while still in college. In 2002, I was able to join Teledyne full time as an Electrical Engineer. Teledyne allowed me to complete my MBA (also at Cal Poly) while working. I shifted to sales and held multiple sales and sales management positions. In 2021, I was promoted to Director of Worldwide Sales for Teledyne Analytical Instruments and Teledyne Monitor Labs. In 2023, I became Director of Sales for Process Instruments and Systems (Teledyne Hastings Instruments and Teledyne Analytical Instruments).

What is your current role at Teledyne?

As Director of Sales, I have global product sales responsibility for TAI and THI products. I oversee Regional Sales Managers in North America, and I share sales responsibility with our Directors of Sales in APAC and EMEA.

Outside of work, what do you like to do?

I spend lots of time getting my three kids to extracurricular activities. There’s not much free time. My family is heavily involved in Girl Scouts and Boy Scouts. We do a lot of camping. I also enjoy catching NFL games when I can.

What is your favorite thing about working at Teledyne?

The best thing about Teledyne are the people that work here. Everyone I know works extremely hard and wants to help customers. Everyone is like family. I now meet coworkers from other parts of Teledyne, and I wish I’d met them sooner.

Check out more from our blog and read more about our vacuum gauges and mass flow meters and mass flow controllers (and be on the look out for future postings about Teledyne Hastings' employees.) 

The use of Liquefied N₂ (LN₂) has revolutionized aluminum extrusion mold performance. CVS Corporation based in Gimpo, South Korea has developed a proprietary LN₂ cooling process that allows production output to more than double for some extrusion profiles. Production times vary based on the geometry of the extrusion profile. Ram speed test data can be found in Figure 1 below.

Figure 1: Extrusion Profile Table

The Aluminum Extrusion Mold Liquid Nitrogen Cooling System from CVS is designed to control the temperature of both the profile and the mold during the extrusion process. As the billet passes through the extrusion mold, the friction between the billet and the mold creates excess heat. This excess heat limits the extrusion ram speed and is the main cause of reduced productivity in the extrusion process. The CVS process maintains optimum profile and mold temperatures by using automated cryogenic proportional control valves to provide precision dosage of Liquefied N₂.

Figure 2: Aluminum Extrusion Mold Liquid Nitrogen Cooling System from CVS

Mr. Ko Hwa-Jin is the President of CVS Corporation and can be reached by email or website: www.ln2doser.com

Mr. Yoonk Min is the President of Inforad Corp. which is the distributor for Teledyne Hastings Instruments for South Korea. Mr. Min can be reached by email or website: www.inforad.co.kr

Wayne Lewey is the International Sales Manager at Teledyne Hastings Instruments and can be reached by email. 

We are occasionally asked for the turndown ratios of our flow meters and flow controllers.  There are varying perceptions as to what this term actually means.

The turndown ratio of a Mass Flow Meter (MFM) or Mass Flow Controller (MFC) defines the usable range for which it can operate while maintaining its published accuracy.  It can be expressed using the following formula:

A flow meter with a large turndown ratio will have a large operating range.  This can also be indicative of the flow meter’s cost.  For example, variable area flow meters (rotameters) typically have lower turndown ratios compared to thermal mass flow meters.

Most analog mass flow meters have an accuracy of ± 1% of Full Scale (FS) and have resolution better than 1%.  The usable range is from 1% to 100%.  They will have a turndown ratio of 100/1 or more commonly expressed as 100:1.  Digital flow meters will have an even greater turndown ratio due to their higher accuracy.

Most analog mass flow controllers also have an accuracy of ± 1% FS.  However, they typically have an automatic valve shut circuit that closes the valve at flow rates below 2% of FS.  This is to ensure full valve closure in the event of a small zero offset.  The usable range is from 2% to 100%.  Since measurement is not possible below 2%, these will have a turndown ratio of 100/2 = 50/1 or 50:1.

 For more information on Turndown Ratio or our Flow Meters, please contact Wayne Lewey