Import Current Signal Precision — Buy in Bulk from Supplier in China

The Keyan Auto-Control Apparatus Co., Ltd. current signal precision instrument delivers 0 to 4 mA output with ±0.05% accuracy and generates 0 to 9999.9 Hz frequency signals, powered by three 5# alkaline or rechargeable batteries. It also provides 24 V DC loop power for two-wire field devices and measures incoming DC current signals from 0 to 24 mA with matching precision, making it suitable for calibrating transmitters and valve positioners in industrial control loops.

This device uses high-speed embedded processors with micro-power architecture to maintain stable output under varying load conditions. The internal circuitry is designed for minimal drift over temperature, and the output signal is isolated from the power source to prevent ground loops. Typical industrial instruments of this class use 16-bit DACs and precision voltage references; this unit aligns with those standards without claiming certification.

End users include maintenance teams in mining, chemical processing, and water treatment plants that require portable calibration tools. Buyers typically order units for field service teams and control room technicians. Packaging is standard industrial-grade with foam inserts and a protective casing. Trade terms are FOB Guangzhou, with bulk orders accepted but MOQ and lead time require direct confirmation with the supplier.

Keyan Auto-Control Apparatus Co., Ltd. is based in Guangzhou, China, with a physical address listed as No.11 Caipin Road. The supplier is classified as imported and harbor-trusted, indicating verified export documentation and logistics history. There is no public information on years in business, workforce size, or client list. The listing confirms production capability for signal generators but does not state certifications, ISO status, or export volume.

The company’s profile shows no response rate or average response time, suggesting limited buyer communication channels. The product description focuses on technical function rather than company history, which implies a manufacturer-to-industry model rather than a branded distributor. Buyers should treat this as a direct factory source with no third-party branding, and verify all performance claims before bulk purchase.