The modern chronograph consists of two sensing areas framed by rods topped by diffusing screens or artificial lighting above (or below) optical sensors that detect the passage of the bullet. The time it takes the bullet to travel the distance between the sensors is measured electronically from which velocity is calculated and displayed.
ProChrono DLX
Features:
On-board Bluetooth connectivity, and more options with FREE apps for iOS, Android, Kindle, PC, and Mac
Internal and external refinements with updates to the circuitry and enclosure design
Built in full featured operating system with multiple shot string memory and statistics
Sensing system compatible with a wide variety of light conditions and projectiles
Faster internal shot clock for improved accuracy to +/- .5% or better
Made in the USA quality at an affordable price
2 year warrantee against defects in material and workmanship, and a 1/2 price repair guarantee
Over 30 years of experience in chronograph design and manufacturing
Replaceable Alkaline 9 volt battery power (not included) for 20+ hours of operation
Quality accessories and replacement parts at a reasonable price
Made in USA with real service and support
Specification:
Velocity Range: 20 – 9,999 feet per second
Temperature Range: 20-100 degrees Fahrenheit
Size: 16x4x3-1/4 inches
Weight: 2.1 lbs
Battery Required: One 9-volt alkaline battery
Battery Life: Approx. 20 hours of operation
Current Consumption: Approx. 20mA
Mounting Hole Thread: 1/4×20
Guide Wire Size: 3/16×16 inches
Memory Capacity: Up to 9 strings of up to 99 shots each
Minimum Time Between Shots: 500 mSec
Shot Timing Resolution: 31 nSec (8000 counts @ 4,000fps) Crystal Controlled
Accuracy: +/-.5% of measured velocity or better
Bluetooth: BT2 and BT4LE
Download APP’s to cellular phone to connect to the chronograph gives read out and low too average.
Digital Link on cellular phone APP’s is great way to get read outs !
Gary Hybridge 