B Model 4501-XX Toxic Gas Sensor Module FM PERFORMANCE APPROVAL ONLY THE FOLLOWING ITEMS, FUNCTIONS AND OPTIONS ARE FM* APPROVED Model 4501-05 Hydrogen Sulfide Gas Sensor Module Sensor Module Model 4501-05 Sensor Module - Hydrogen Sulfide Calibration Equipment Model 1250-01 Gas Sensor Calibration Kit, Type A Model 1260-05 Hydrogen Sulfide in N2, 25 ppm Gas Cylinder Model 1260-45 Hydrogen Sulfide in N2, 10 ppm Gas Cylinder Model 5358-01 Calibration Adapter Notes: 1) Apparatus must be installed in

A red LED (light-emitting diode) and audible alarm activate when the concentration of gas exceeds the factory- set (and user-adjustable) level. A green LED indicator on the monitor shows that power is connected and it is a safe condition. The standard configuration has a buzzer and normally operating open relay, a fail-safe normally operating closed relay is field selectable. All the electronic circuitry needed to operate the monitor, except the DC input power, is contained in a compact unit. It

Available as single channel monitors or part of multipoint alarm system The Model 2050 Ammonia and Model 2060 Refrigerant/ Halocarbon Gas Monitors are continuous duty, low cost stationary monitors for detection of high levels (50-500 PPM) of ammonia and halocarbon refrigerant gases. These monitors are primarily used in and around freezers, refrigerators, and compressor rooms to warn of leaks and dangerous levels of these gases. An alarm is activated when the concentration of gas exceeds the us

OPERATION 4 3.1 Introduction 4 3.2 Alarms 4 3.3 Outputs 4 4. ALARM CALIBRATION 5 4.1 Factory Alarm Calibration 5 4.2 Frequency of Alarm Calibration Check 5 4.3 Alarm Calibration Check Process 5 4.4 Equipment Required 6 4.5 Alarm Calibration Procedure 6 5. SERVICE 5.1 Sensor Replacement 7 6. INSTALLATION 8 6.1 Gas Sensor Module Locations 8 6.2 Mounting 8 6.3 Wiring 8 6.4 Power Supply 8 6.5 Alarm Devices 8 7. ALARM CONFIGURATION 10 8. SPECIFICATIONS 11 9. ACCESSORIES AND REPLACEMENT PARTS 11 10. L

Remote Alarm Available If a remote alarm is desired, Sierra Monitor’sAlarm Panels, the Model 2102 Dual Channel Alarm Panels can be connected up to 500 feet away from the monitors. 2050/2060 Gas Monitors (5/04) Page: Instruction Manual 2.0 QUICK START 2.1 Overview The Gas Sensor Module has been supplied factory calibrated and ready for immediate installation and operation. An installer familiar with installation and operation of gas detection products can use this section to begin immediate use o

The factory setpoint for R12 is 500 ppm while the setpoint for R134a is 50 ppm. See the specifications for more details. Temperature Range The Model 2050 and 2060 have temperature compensated circuitry to provide stabilization in temperatures ranging from -4o to 158oF. Semiconductor-Type Sensor A solid-state semiconductor-type sensor and associated electronic circuitry ensure trouble-free, long-term operation. There are no pumps, filters, or chemical cells to replace or maintain. Except peri

The concentration of the span gas must be equal to the alarm point desired. The equivalent substitute gas is 80 ppm Hydrogen (H2) for the Model 2050 and 150 ppm Carbon Monoxide (CO) for the Model 2060. Calibration requires application of the span gas to the sensor and adjustment of the sensitivity adjustment potentiometer. Warning: During calibration the alarm will turn on and remote alarms connected to the alarm relays will be activated. Disable the remote alarm if necessary. Fig. 4-1 Location

Terminal Function TB1-1 + VDC (9 – 24) TB1-2 GND (0VDC) TB2-1 Relay NC (Normally Closed) or Output to Model 2102 Safe TB2-2 Relay Common TB2-3 Relay NO (Normally Open) or Output to Model 2102 Alarm Table 6.1 The terminal strip on the electronics board in the module. The wiring must be connected as indicated in Figure 6.1 depending upon the controller or relay configuration being used. 6.4 Power Supply The power supplied by the controlling device or an external power supply must meet the followin

Personnel injury and costly business interruptions are also likely. Factory Mutual requires electro-optical flame detectors in the semiconductor wet benches to monitor for fire. These flame detectors must be suitable for the hostile chemicals used in the etching process (such as hydrofluoric, sulfuric, and hydrochloric acids). Furthermore, they must be tested and approved for fire response to FR polypropylene now used in the construction of wet benches as well as other fuels such as isopropyl al

Both controllers provide the user with two independent adjustable alarm levels. In addition, the output can be continuously sent to a chart recorder. The alarm relays can be programmed to be either latching or non-latching and to activate either as a rising or falling alarm. When the controller is used with 4-20 mA sensors, a third alarm provides a fault indication when the controller detects loop current less than 3 mA. The alarms are acknowledged via either an external reset switch or a reset