Foxcroft FX-Mini, Operating Manual

Page 1: ...1 Foxcroft FX Mini FX Mini R Single Channel Toxic Gas Detector Operating Manual Document OMFXMINI102019...

Page 2: ...2 Page intentionally left blank...

Page 3: ...tions 13 Startup 14 Normal Operation Alarm Set Points and Conditions 15 Normal Operation and Alarm Conditions Danger Sensor Fail Alarms 16 Normal Operation and Alarm Conditions Sensor Fail Oxygen Sens...

Page 4: ...d LED indicator light sound the integral audible buzzer at the danger level only and energize the appropriate relays that have been assigned The electrochemical gas sensing cell generates a voltage th...

Page 5: ...sensor be tested by means of a certified gas standard at least once every six months Warning If the FX Mini is altered in any way the warranty will be voided Example drilling additional holes in the e...

Page 6: ...6 FX Mini Gas Detector Illustration All in One Option 1 Main Circuit board 2 AC DC Power Supply 3 Gas Sensor 4 10A relay card 5 Silence Reset Button 6 Buzzer...

Page 7: ...f the potential hazard area The devices are connected by 25 feet of 22 AWG shielded cable up to 2 000 feet of cable is available optionally Wiring connections to the gas sensor are color coded to reco...

Page 8: ...y connections to the circuit board Before touching the circuit board touch an earth grounded metal surface such as the detector s power supply guard a metal pipe or conduit to discharge any static ele...

Page 9: ...ole USA plug 4 ft cord Class II power Agency Approvals CE CUL CB FC The power cord plugs into a standard NEMA 5 15R receptacle 24VDC NOTE Detectors for Ammonia Hydrogen Cyanide and Ozone use an AC to...

Page 10: ...limit current to the relay to less than 10 amps Relay 1 Danger Relay 2 Danger Relay 3 Warning Relay 4 Sensor Fail O Relay red LED O Relay card power on LED Relay test buttons yellow highlight Relays...

Page 11: ...Unpacking The detector is shipped with a piece of cardboard that covers and protects the gas sensor remove this prior to installation After unpacking it is recommended to save the shipping carton and...

Page 12: ...ate the sensor with the sensing chamber opening pointing down toward the floor near the gas source where the normal air flow pattern will carry the gas to the sensor Do not install in dusty or dirty a...

Page 13: ...Sensor Housing Dimensions 13 Dimensions Attach the wall mounting feet to the rear of the main enclosure using 10 diameter re not included near the potential leak source taking into account the locatio...

Page 14: ...non latching to alarm at the Sensor Fail level Tip Test your wiring by pushing the test buttons on the relay card Tip If you think the warning alarm level may trigger nuisance alarms do not assign a r...

Page 15: ...rated before shipment differences in air pressure temperature and relative humidity at the installation site may cause the zero point and consequently the alarm trip points to shift slightly 5 The sen...

Page 16: ...ndicator flashing on the main circuit board and a green power on LED illuminated on the relay card Alarm Set Points and Conditions The FX Mini includes two gas alarm set points and a sensor fail alarm...

Page 17: ...ay the danger alarm notification as well as the sensor fail notification Note After a Danger alarm has occurred and the gas concentration falls to zero the gas sensor output may momentarily fall below...

Page 18: ...The responsiveness of electrochemical sensors will vary with environmental conditions Sensor response may be higher or lower depending on actual environmental conditions Gas Exposure The electrochemic...

Page 19: ...evels the sensor will progressively become more non linear and take increasingly longer to recover as the sensing electrode is unable to consume all the gas diffusing to it If the gas level is increas...

Page 20: ...response time of the sensor s or a minimum level of response achieved such as 80 of gas concentration applied Note this check is not intended to provide a measure of calibration accuracy Calibration c...

Page 21: ...rate a chlorine gas sensor with bleach pool chlorinating chemicals or by producing chlorine gas with a mixture of bleach and an acid Any sensor adjustment made with such gases or fumes or without the...

Page 22: ...osure You may leave the sensor by unscrewing the mounting ring and pulling the sensor out of the Use the orange connector or the gray plastic sensor body to handle the gas sensor Do not handle the sen...

Page 23: ...ers Span calibration requires a gas standard calibration kit The gain is factory set and should never be adjusted Full Calibration Toxic Gas Sensors 1 Make sure the zero point is set accurately if not...

Page 24: ...s before rising due to differences in humidity and pressure between the gas in the cylinder and the gas sensor 6 Allow five minutes sometimes slightly less for the readings to stabilize 7 Adjust the s...

Page 25: ...displayed on the LED display Zero point calibration is not required Sensor output can be monitored by connecting a multi meter set to mA to the 4 20mA loop connector or to the millivolt connector CN2...

Page 26: ...appropriate flow rate for a minimum of 5 minutes Once output signal is stable press and hold the calibration button for between 12 and 60 seconds The LED acknowledges calibration by blinking 8 times...

Page 27: ...oint setting 2 Install the calibration nose into the sensor opening collar be sure the nose is seated and the sealing caps are removed 3 Connect the target calibration gas sample tubing to the nose Ox...

Page 28: ...he board off of the sensor 7 Remove and discard the 3 mounting screws They are metric The new sensor will come with 3 new 2 56 screws that match the thread inserts in the new sensor Keep the collar me...

Page 29: ...sensor response test If the sensor fails this test a full calibration is required Ready Advanced Ammonia Sensor with 4 20mA Transmitter Board CAUTION This component is susceptible to Electrostatic Di...

Page 30: ...30 Gas Sensor Components See page 26 for Ammonia Ozone and Hydrogen Cyanide sensor components...

Page 31: ...Reset Button 1 Dual function NC pushbutton first push silences the buzzer the second resets alarms relays Operating Voltage Regulated 12VDC Power Supply by included AC DC power supply below or by 12VD...

Page 32: ...to protect the detector in outdoor installations Outdoor installations require non standard UV stabilized enclosures Battery Backup A separate 300VA external battery backup UPS is available part FX BB...

Page 33: ...must be freight prepaid and include the following information 1 A clearly written description of the malfunction 2 Name of person to contact and the phone number where they can be reached 3 Proper ret...

Page 34: ...uthorized repair Buyer agrees to hold Foxcroft Equipment Service harmless from all claims for damages arising out of injury or death to any person or damage to any facility or any other property or lo...

Page 35: ...35...

Page 36: ...quipment Service Co Inc 2101 Creek Road P O Box 39 Glenmoore PA 19343 Tel 800 874 0590 610 942 2888 Fax 610 942 2769 Email sales foxcroft com Web www foxcroft com Serial Number Label for FX Mini Toxic...