MSA S4000CH Combustible Gas DetectorCondition:* Used, unable to test. Sold as-is. For parts. Additional Notes:* Event logging stores fault, gas check, calibration, and alarm event history* HART and Modbus communication provides complete status and control capability in the control room* Industry standard output 4-20 mA output for remote alarm and fault indication* Warning, alarm & fault relays provide local alarm capability* Calibration, calibration check, setup mode simplifies operation and maintenance* Remaining sensor life indication reduces downtime by providing an estimate of remaining sensor life* Fully automatic calibration possible with automatic remote gas calibrator (ARGC)MSA S4000CH