MK 2015 PGM Features
The Emdyne, Incorporated Precision Gas Meter (PGM) was developed and patented during the 1980s for applications related to enhanced oil and gas recovery laboratory studies. As such, it is sized for volume collection rates from a few milliliters per hour to a maximum of a few tens of liters per hour. Early examples of the PGM simply registered units of volume in one milliliter (CC) increments. The next improvement increased accuracy to 0.1 CC and this remains the present resolution. The operator would manually record the indicated volume by hand.
In the late 1990s a customer asked for improvements to be added: a heated enclosure with temperature regulation for the collection cylinders and associated plumbing, the use of stainless steel tubing, valves and fittings, and a means of linking the volume data collected and temperature status to a PC based data logging system using a serial RS-232 port. Recent customers have decided to forgo the temperature control feature and instead rely on an RTD temperature probe output to monitor cylinder temperature. The standard model includes the data port for volume logging and the temperature probe output is provided via a two pin rear panel connector. Temperature regulation is now an extra cost option.
The latest MK 2015 PGM is constructed of high quality materials throughout. The chassis and motor/cylinder structure is aluminum alloy with hard black anodized finish to resist chemical attack and abrasion. The motor is a special linear stepper driving a threaded shaft, seals are Buna-N O-rings lubricated using a proprietary chemically inert grease, all plumbing is 316 SS 1/8 inch tubing, valves and fittings, and the electronics is robust and reliable while inherently safe and maximally efficient.
Emdyne MK 2015 PGM is warranted for one year from date of purchase from all defects. A spares kit is furnished which includes two spare cylinders, O-rings, an adjustment screwdriver for the coarse balance and a 2-ounce jar of lubricant. The mains power is universal for 90-240 VAC, 50/60 HZ. Servicing is easily accomplished using common SAE 5/16, 3/8, and 1/2 inch wrenches along with Phillips and common flat blade screwdrivers.