SPM Flex Gas Detector Introduction The SPM Flex gas detector is an extractive gas monitoring system that draws gas samples locally or from a remote point to a Chemcassette tape-based optical gas ® detection system� A wide range of toxic gas Chemcassette cartridges are available that enable detection of gases used or generated in semiconductor manufacturing and industrial environments�...
SPM Flex Gas Detector Safety Information DANGER Danger notices contain information that could prevent death or serious injury� WARNING Warnings contain information that could prevent injury or equipment damage� CAUTION Caution notices contain information that could prevent equipment damage� NOTE...
Area Networks� The unit is actively monitoring the specified gas or In monitor family of gases When configured, the SPM Flex will hold the alarm or Latching alarm or fault fault status active until the user performs an alarm/ fault reset�...
WARNING Operate and service the SPM Flex gas detector only as specified in this manual and the accompanying quick start guide� Failure to do so may impair the protection provided by the detector and may also void the warranty�...
Mating signal connectors for fixed installations Battery operation The SPM Flex gas detector is supplied with a power supply/charger than can connect the detector’s power connection and a standard wall outlet� (Ensure that the correct power cable has been ordered for local operation�) The power supply/ charger is designed for indoor, dry-location use only�...
SPM Flex Gas Detector The handle (portable model) The detector can be conveniently carried with the optional handle, which is mounted onto the cover at three locations� If necessary, the handle can be removed by the user by removing two bolts� All of the detector’s functions can be performed with the handle attached�...
Rocker switch cover Main power rocker switch Figure 3. SPM Flex main power rocker switch After the detector’s cover is open, use a Phillips screwdriver to remove the rocker switch cover� Turn the main power rocker switch to the on position and replace the rocker switch cover�...
Press and hold the Power/Cancel button until the green LED begins blinking� The detector will begin a startup sequence that lasts about 30 seconds� The four LEDs provide at-a-glance information about the current state of the detector: LEDs (red, green, yellow, blue) Figure 4. SPM Flex LEDs Description solid Alarm 1 blinking...
Down arrow Figure 5. SPM Flex controls All SPM Flex menus are navigated by the four buttons shown in Figure 5� Pressing either of the arrows or the Accept/Select button will access the menu from the main display screen� The arrows also are used to scroll up and down through lists of options�...
Relay 4-20 mA Power Off The SPM Flex detector’s menus are easily navigated� As an example, this is how a user could review the detector’s gas settings when starting from the In Monitor screen: 1� Press the Up Arrow > to return to the Main Menu�...
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Monitor mode indicator Figure 6. Elements of typical SPM Flex detector displays The bar graph on the right shows the current concentration relative to the Alarm 1 and Alarm 2 setpoints� (The bar’s range is relative to the alarm levels, not to the full scale of the selected gas)�...
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SPM Flex Gas Detector Loading a Chemcassette cartridge The Chemcassette cartridge door must be closed before putting the detector into monitor mode (this holds the Chemcassette cartridge in place)� The detector must be taken out of monitor mode before opening the door�...
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SPM Flex Gas Detector If there is an error (i�e�, the same cartridge was reinserted, the new cartridge has expired, or an unqualified user is attempting to insert a cartridge that detects a different gas than the last one), an error message will be displayed and the installation will be canceled�...
Wiring and tubing Typical fixed installation topologies The SPM Flex gas detector has flexible installation options to allow the user to select the one most suitable for a specific application� The detector is supplied with weather-sealed connectors for both power and Ethernet, and with a third port sealed�...
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The terminal module is located on the main PCB inside the gas detector� All power, relay, and 4-20 mA connections to SPM Flex are made via this module� Wire entry to the terminal module area is via the cable entry/conduit entry located at the top of the detector�...
To ensure adequate resolution to overcome tolerance in the 4-20 mA reading, set the full scale at an appropriate level� The SPM Flex issues a fault if the measured 4-20 mA reading is more than 0�8 mA (5% full scale) off from the expected drive value�...
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SPM Flex Gas Detector Relays The detector is equipped with three relays� Connect the unit as shown in this figure� RELAY 1 FAULT RELAY 2 TERMINALS TERMINALS TERMINALS Figure 15. Relay configuration The detector can be wired as normally closed or normally open� It can also be configured as normally energized or normally de-energized via software�...
SPM Flex Gas Detector Modbus register definitions Register Address/Name Bits Description Values 0: No Inhibit 1: Inhibit Alarm Inhibit State 2: Inhibit Fault 3: Inhibit Alarm & Fault 4: Inhibit All Instrument Fault 1 = Active Maintenance Fault 1 = Active...
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SPM Flex Gas Detector Tubing (optional) Sample and exhaust tubing calculations This table shows the flow rate, tubing length, transport time, and maximum pressure and vacuum at the inlet and exhaust points� Tubing lengths vary among gases� If the pressure or vacuum on the inlet/exhaust lines does not meet the recommended values, the detector may encounter flow faults�...
The SPM Flex detector must be installed only by qualified professional personnel in accordance with local codes� The SPM Flex gas detector has an optional mounting bracket assembly that is easily affixed to a suitable vertical surface such as a wall, tool housing, mounting plate on a pole etc�...
SPM Flex Gas Detector Dimensions 9.5 in. (24.1 cm) 6.4 in. (16.3 cm) 13.2 in. (33.6 cm) 12.3 in. (31.2 cm) 7.2 in. (18.3 cm) Figure 18. Dimensions of the SPM Flex Gas Detector...
SPM Flex Gas Detector Standard mounting bracket Figure 19 shows the detector’s standard mounting bracket� 12.5 in. (31.8 cm) drilling holes: 10.2 in. (26.0 cm) 0.6 in. (1.6 cm) 6.3 in. (15.9 cm) Figure 19. Standard mounting bracket At least 2 screws must be used when mounting the standard bracket to a wall�...