The General Monitors S4000TH H2S Gas Detector has an Intelligent Sensor that is a microprocessor-based Transmitter designed for use with General Monitors’ thin film metal oxide semiconductor (TFMOS) sensors. The S4000TH H2S Gas Detector features one person calibration and can virtually self-calibrate by simply activating a magnetic switch and applying gas.
The General Monitors S4000TH Gas Detector is designed to detect hydrogen sulfide in parts per million (ppm) levels and provide status indication and alarm outputs. All of the General Monitors S4000TH electronics are contained within an explosion-proof housing so that sensor information can be processed at the sensor site. It provides a 4-20 mA signal which is proportional to 0 to 100% of the detection range at the sensor.
In addition, the S4000TH H2S Gas Detectors includes warning, alarm and fault relay contacts that can be used to indicate an alarm or fault condition, and dual redundant Modbus or HART communications. Configurations with relays, Modbus and HART are available to meet many needs. The S4000TH H2S Gas Detector includes a three (3) digit LED display. This local digital display continuously indicates gas concentrations during normal operation and in the calibration check mode, calibration prompts during calibration mode, display codes during the setup mode and eight fault codes.
The General Monitors S4000TH H2S Gas Detector has four different operating modes. First, the normal operating mode in which alarms are active and the display and 4-20 mA readings are proportional to the gas concentration at the sensor. Second, the gas check mode that allows the user to apply a gas and check the sensor response while alarm outputs are inhibited. Third, a calibration mode in which gas is applied to the sensor to calibrate the unit. Finally, a set-up mode which allows the user to review or change setup options such as relay settings, sensor range, and Modbus parameters.
Features
Meets stringent ISA S92.0.01, Part 1, 1998 performance standard set by ISA and approved by FM
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 4-20mA output for remote alarm and fault indication
Warning, alarm & fault relays provides 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.
Applications:
Refineries
Drilling rigs and platforms
Gas collection and distribution facilities
Oil and gas production platforms
Mud-logging operations
Sulfur recovery/de-sulfurization facilities
Wastewater treatment facilities
Chemical plants
Heavy water nuclear facilities
Well head sites.
Approvals/Standards:
CSA
FM
ATEX
IECEx
CE
GOST
SIL
CA Fire Marshall
