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Model S4000TH
9.6 FM Approval
Factory Mutual Research Corporation
1151 Boston-Providence Turnpike
Norwood, Massachusetts 02062
Approval of the transmitter does not include or imply approval of apparatus, to which the
transmitter may be connected and which processes the electronic signal for the eventual end
use. In order to maintain FMRC approved system, the control instrument, to which the subject
instrument is connected, must also be FMRC approved.
The following sensors have been FMRC approved for use with the Model S4000TH:
50445-1 Aluminum Body H2S Gas Specific MOS Sensor, 0 to 100 ppm
50445-5 Aluminum Body H2S Gas Specific MOS Sensor, 0 to 50 ppm
50445-9 Aluminum Body H2S Gas Specific MOS Sensor, 0 to 20 ppm
50448-1 Stainless Steel Body H2S Gas Specific MOS Sensor, 0 to 100 ppm
50448-5 Stainless Steel Body H2S Gas Specific MOS Sensor, 0 to 50 ppm
50448-9 Stainless Steel Body H2S Gas Specific MOS Sensor, 0 to 20 ppm
The following apparatus have been FMRC approved (although they have not been verified as
part of a Model S4000TH system):
Model DT210 Eight-Channel Readout/Relay Display Module with Power Supply and
Relay Module