If you have questions about our products, Fill out the form below and we will answer any questions you have. Tips: Fields marked with*are required. Emerson KL3021X1-BA1 CHARM Analog Input Card Product Introduction The Emerson KL3021X1‑BA1 CHARM Analog Input Card is a single‑point analog input module specifically designed for Emerson’s DeltaV™ CHARM I/O subsystem. It supports 4–20 mA field signals with integrated HART *Your Name: *Your Email: *Your Name: *Vdcode: Submit