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Dywer Model LC21 Smart Loop Calibrator

Sources and Reads Milliamps, Auto-Stepping, Auto-Ramping

Perform field calibration of 2-wire transmitters, receivers, recorders, and controllers with Model LC21 Smart Loop Calibrator. The portable LC21 calibrator sources 24 VDC, reads 0 to 21.00 milliamps and simulates 2-wire transmitters. Unit features continuous output or fixed step current output. Use fixed calibration currents to test and calibrate equipment or to control valve stroking. Output currents can be changed manually or automatically. The LC21 calibrator can source or simulate continuous up/down cycling between 4 and 20 mA--ideal for endurance testing. Display readings in mA or in % of 4-20mA or 0-20mA. Unit includes carrying case, batteries, spare fuse, and manual.

See Dimensions


Input Range: 0 to 21.00 mA.
Accuracy: ± 0.05% of range.
Output Range: 0 to 21.00 mA.
Fixed Steps: Output in mA
4-20mA lin: 4-8-12-16-20,
0-20mA lin: 0-5-10-15-20,
4-20mA sq.rt (flow): 4-5-8-13-20,
0-20mA sq.rt (flow): 0-1.25-5-11.25-20,
4-20mA valve: 3.8-4-4.2-12-19-20-21.
Fixed Step Interval: 10 seconds in auto-stepping mode.
Auto-Ramping Interval: 60 seconds between limits.
Resolution: 10 microamps.
Temperature Effect: 0.0015% per °F, 0.003% per °C.
Ambient Operating Temperature: 14 to 122°F (-10 to 50°C), Storage: -65 to 260°F (-54 to 126°C).
Electrical Connections: 13" (33 cm) length.
Power Requirements: Four AA 1.5V alkaline batteries.
Battery Life: Sources 12 mA: 13 hours; Measures: 64 hrs.
Internal Loop Power: 24 VDC stabilized.
External Loop Power: 56 VDC maximum.
Drive Capability: 900 Ohms.
Housing Material: High impact ABS.
Weight: 9oz (285g).
Agency Approvals: CE.

Part Number LC21-110, 100 VAC Adaptor
Part Number LC21-230, 230 VAC Adaptor
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