On 7 September 2007, Campbell Scientific removed the CS512-L from our pricing system. The CS512-L had identical measurement characteristics as the CS512 (also retired). The CS512-L differed from the CS512 in its cable length; the CS512-L had a user-specified cable length, while the CS512 had a 23 ft (7 m) cable length. The CS512-L's custom cable length increased the delivery time (the CS512-L was a "special order" from Oxyguard).
The "-L" on a product model indicates that the cable length is specified at the time of order.