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Use the [^] or [Ў] keys to select the correct alarm relay action for the application, Latch, Sentry or Non-Latch. Selecting “Sentry” enables the Sentry controller to make all alarm action decisions. * indicates the current selection. • Gas Factor: A calibration standard of Methane may be used in conjunction with scaling factors to cause alarm function in %LEL scale of another gas. See Appendix I for a list of the scaling factors. Note that if the 5100-02-IT is interfaced to a Sentry controller that the gas factor can be set in the Sentry or the Gas Sensor Module but NOT IN BOTH. It is recommended that the gas factor be adjusted in the Gas Sensor Module so that the display values on both the Gas Sensor Module and the Sentry are matched. Note that gas factors are not applicable during calibration. • 4-20mA: Use the [^] or [Ў] keys to select Calib, or CalibOut TblOut menu and press [E]. The “Calib” section of the menu allows the user to calibrate the 4 mA and 20 mA outputs. To calibrate the 4 mA and 20 mA outputs it is necessary to have an amp meter connected to the 5100-02-IT and upon selecting the 4 mA output calibration then the [^] or [Ў] keys can be used to adjust the 4 mA reading on the amp meter until it reads 4 mA. Similar steps can then be performed for the 20 mA output. The CalibOut section allows the user to select the 4-20 mA output action desired during calibration. * indicates the current selected value. Available selections include: • Track – the 4-20mA value tracks the calibration gas exposed to the gas sensor module • C2.5mA – the 4-20mA value is held at 2.5mA during calibration • C4.00mA – the 4-20mA value is held at 4.0mA during calibration. The Tbl Out menu enables the user to select the mA output value for the Trouble Alarm. Select “T1.5mA” to choose the 1.5mA default valve. Or select “User mA” and use the [^] or [Ў] keys to select any valve between 0.5mA and 3.7mA. • RS-485 - Use the [^] or [Ў] keys to select Address or Baud rate menu and press [E]. Note that the 5100-02-IT has a rotary switch on the faceplate and it is used to select addresses 1-15. When connected to Sentry the user can select 1-8 and using Modbus RS-485 the user can select addresses 1-15. For Modbus addresses above 15, set the rotary switch to 0 and then use the “Address” menu to select any address between 16 and 254. The Baud rate menu allows the user to select a baud rate of 38400, 19200, 9600, 4800 or 2400. * indicates current selection. RS485 default parameters are: 38,400 baud, 8 bits, 1 stop bit, no parity Page: 20 Model 5100-02-IT Combustible Gas Sensor Module Function Display Description Key Reference --0%LEL-Default Display ME Mode ALMRSET: Mode Function - Alarm Reset .• ME Mode CALIB:-Mode Function - Calibrate .• ME Mode SETUP:--Mode Function - Set Point Adjustments .• ME Enter Alarms S.P. Function - Alarm Adjust * A Below.• ME Down Relays S.P. Function - Relays Adjust * B Below .• ME Down Gas S.P. Function - Gas Type/Range Adjust * C Page 22 .• ME Down 4-20mA S.P. Function - 4-20 mA Adjust * D Page 22 .• ME Down RS-485 S.P. Function - RS-485/Sentry Output Adjust * E Page 22 .• High Alarm Set Point Adjustment Example ME Enter H.Alarm S.P. Function - High Alarm Adjust *A.• ME Enter HASP:60Alarm Set Point: current = 60 .• Use .or . keys to adjust to new set point ME Down (x5) HASP:55Alarm Set Point: new = 55 .• ME Enter ACK Momentary Acknowledge of new Set Point .• H.Alarm S.P. Function - Alarm Adjust Relays Set Point Adjustment Example ME Enter H. Relay S.P. Function - Alarm Relay Adjust *B.• ME Down L.Relay S.P. Function - Warning Relay Adjust .• ME Enter Latch Use .or . keys to adjust to new relay action (Latch, Sentry, NonLatc) * indicates current .• ME Down Sentry NOTE: Sentry indicates that Sentry controls relay action and not the IT Sensor Module .• ME Down *Sentry Alarm Relay set to Sentry .• Table 5 - 3 A: Set-Up Configuration Page: 21 Model 5100-02-IT Combustible Gas Sensor Module Gas Factor Example ME Enter GasFactr S.P. Function - Gas Factor Adjust *C .• ME Enter Factr100 Select [E] to select or .or . to adjust factor number and press [E] .• ME Enter ACK Acknowledgement of new Gas Factor Value .• 4-20 mA Adjustment Example ME Enter Calib S.P. Function - Calib Adjust *D .• ME Enter Out: 4mA Use .or . keys to select 4 mA or 20mA .• ME Enter 4mA Selects 4 mA .• ME Enter ACK Momentary Acknowledge of new Set Point .• ME Mode Calib S.P. Function - Calib Adjust .• ME Down CalibOut S.P. Function - Output during Calibration Adjust .• ME Enter Track Use .or . keys to select Track, C2.5mA, C4.00mA .• Track = Output during calibration tracks the calibration gas, C2.5mA = Output during calibration is 2.5mA, C4.00mA = Output during calibration is 4.0mA ME Enter *Track * = Current selection .• ME Mode Calib S.P. Function - Calib Adjust .• ME Down Tbl Out S.P. Function - output during Trouble Alarm .• ME Enter *T1.50mA Current Valve 1.5mA for Trouble .• ME Down User mA S.P. Function - User Selectable mA Valve .• ME ...

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