TEL AFA500 Alarm for Lab Airflow

Category: Others/ Misc

Presentation Description - TEL AFA500 Alarm for Lab Airflow


Presentation Transcript

slide 1:

Airfow Monitor AFA500 helping you create a safer environment in your workplace a breath of fresh air.....

slide 2:

AFA500 Series Airfow Monitors General Description The AFA500 series of airfow monitors and controls are designed to ensure the Safety of the users of: FUME CUPBOARDS FUME HOODS BIOLOGICAL SAFETY CABINETS. The AFA500 is an entry level airfow monitor that is designed for applications where airfow velocity indication is not required. The AFA500 is available with either a built in or remote unique airfow sensor that is used to measure Face Velocities or Duct Velocities. The sensor has no inherent drift and will provide stable readings over many years of operation without re-calibration. AFA500 AFA500 Airfow monitor suitable for Standard airfow applications • Audio visual airfow alarm with integral or remote Airfow sens or • 2 Point or Alarm Point Capture Pushbutton calibration • Low air alarm relay output • Relay input for Night Setback to mute audible alarm • Relay input for Sash High alarm • Permanent or momentary alarm mute

slide 3:

Alarm Range Field Set up Accuracy Airfow Sensor Relay Output Low Air Alarm Delay Relay Input Com Port Sash High Alarm Night Setback Display Alarm Indication Horn Silence Mounting Monitor Operating Temperature range Airfow sensor Operating temperature Airfow sensor Working temperature Storage temperature Agency Listings Hazardous Area Remote Airfow sensor or pressure switch AFA500 0.15-2.00m/s 30-400fpm Integral or remote SM6 Airfow sensor Single or 2 Point calibration Alarm point Capture Velocity +/-5 Integral Airfow Sensor or remote SM6 1 Low Air Alarm Fixed 5 Seconds 2- Sash High / Setback RS485 Monitor Confguration only Yes with alarm repeat Yes – relay input 2 x LED’s Safe/Alarm Red LED with Audible alarm Temporary or Permanent Fully fush Mk2 Semi fush Mk3 13-30°C 55-86°F 15-25°C 59-77°F Ambient +25°C/77°F -40-65°C -40-150°F CE RoHS Gas group IIC Temp Class T6 With Atex certifed I.S Zener Barriers AFA500 Series Specifcation Specifcations

slide 4:

TEL AFA 500 MK3 FUME HOOD MONITOR — INSTALLATION AND OPERATION GUIDE For complete manual and product information log on to For support call Holland Safety Equipment at 847-680-9930. STARTUP The AFA 500 must be field-calibrated after an HVAC professional balances the room air supply and exhaust. When the unit is powered up the following sequence of events occurs: 1. The alarm performs a self-test of its functions LEDs and audible alarm approximately 2 seconds and then initiates a delay timer of 30 seconds to allow the airflow sensor to stabilize. 2. During the 30-second stabilizing period all alarms and relay outputs are deactivated and the red and green LEDs remain on. 3. At the end of the delay the unit will do one of two things: a. If the monitor has been calibrated the unit enters normal operating mode solid green light for safe velocity red light and audible alarm if low velocity. b. If the unit has not been calibrated the red and green LEDs will flash the audible alarm will be muted. CALIBRATION — SINGLE POINT DEFAULT 1. Determine the desired alarm point then use a calibrated instrument to position the sash such that the face velocity of the hood is equivalent to the desired alarm point. 2. Press and hold the ENTER button for 5 seconds to enter Calibration Mode. This is indicated by both red and green LEDs flashing with the audible alarm beeping. 3. To initiate calibration press and hold the ENTER and SET buttons at the same time. The unit will sample the airflow for 5 seconds during which time the green LED goes off and the red LED flashes. The audible alarm continues to sound during the air sampling. 4. If calibration is successful the monitor will give a two-tone beep at the end of the air sample and then automatically enter run mode. 5. If the ENTER or SET button is released during the air sampling period or if the airflow is fluctuating too much the alarm will emit a lower-frequency buzzing for a short period and then re-enter calibration mode. If this occurs press the ENTER and SET buttons again to repeat the airflow sampling. 6. When calibration is complete lower the sash to operating height and the green LED should light indicating an airflow greater than the calibrated alarm point. If the airflow drops below the alarm point the unit will go into alarm condition red LED flashing audible horn beeping. ALARM PANEL DIMENSIONS Two fixing holes 2.5 mm diameter for two 6 self-tapping screws provided. 4.37” 111mm 2” 50.8 mm 3” 76.2 mm PANEL CUTOUT DIMENSIONS

slide 5:

AFA500 mounted on front of side post Fume hood outer skin Fume hood inner skin 1 inch hose 1 inch female adapter 1 inch male bush TEL AFA 500 MK3 FUME HOOD MONITOR — INSTALLATION AND OPERATION GUIDE For complete manual and product information log on to For support call Holland Safety Equipment at 847-680-9930. FRONT POST INSTALLATION CONNECTION DETAILS SIDEWALL SENSOR PLACEMENT The monitor must be positioned where it can "see" the room pressure of the laboratory. The back connection spigot of the monitor will accept the provided air hose which should be connected to the inner chamber of the fume hood. The ideal position for the other end of the hose for most fume hoods is 100mm 4 inches back from the sash and 100mm higher than the normal sash opening height through the inner side wall. Mount the monitor on the front of the fume hood and use the provided hose. For fume hoods with a single skin side wall or a double skin with a small gap between them it may not be possible to achieve the ideal sensing position using the provided hose. With a single skin side wall it is possible to fix the sensor on the outside of the fume hood and connect directly to the inner chamber in the ideal position. This method can only be used for up to two fume hoods when they are positioned side by side using the two outer walls . The sensor should not be mounted in a position were it is subject to drafts from the laboratory air input or ventilation system.

slide 6:

Muting the AFA 500 There are four ways to silence the audible alarm on an AFA 500 fume hood or bio-safety cabinet alarm. 1. Temporary mute When the monitor is in alarm mode press the enter button. The horn will remain off for the duration of the alarm condition. When the monitor returns to safe mode the alarm will be re- enabled for the next time the monitor has an alarm condition. If the user wants to use a temporary mute with a ringback feature — wherein the audible alarm will resume after a set time period — this can be accomplished by connecting two wires from the relay output terminals to the + and SW terminals on the sash high input relay. Once this connection is made an low air alarm also will initiate the sash high alarm. If a user pushes the enter button for a temporary mute it will re-sound after five minutes. 2. Permanent mute When the monitor is in normal operation mode press and hold the set button for 10 seconds. The audible alarm will beep three times to indicate the alarm is disabled. When the airflow is in the normal/safe condition the green LED will flash to indicate the alarm has been disabled. When the airflow is in a fail/unsafe condition the red light will blink and no horn will sound. To undo the permanent mute press and hold the set button for 10 seconds. The audible alarm will beep three times to indicate the alarm is enabled. 3. Night Setback This is a “temporary” mute activated by electric input. The monitor has two dry contact relay inputs on the back. To enable night setback wire an external element a building automation system or the hood power the fan power the room light etc. into the correct relay inputs. Then when the external element changes states turns on/turns off etc. it sends a signal to the relay to switch from open to closed. When the monitor enters night setback mode the audible alarm is disabled. If there is sufficient airflow the green light will blink. If there is an air fail condition the red light will flash. Then when the external element changes states back to the original condition the relay switches back and the alarm returns to normal operating mode the horn is re-activated automatically and the green light returns to solid state. To make sure everything is set properly activate the blower switch on and off while looking at the monitor to make sure the mode is changing as intended. 4. “Link” power This approach involves wiring the monitor so when the power to an external source such as the hood light is shut off the monitor powers off as well. This can be done by wiring the outlet that powers the monitor to lose power whenever the light loses power kind of how a TV DVD player etc. all shut off when turning off the community surge protector/power strip. The monitor will remember its calibration when power is restored. For more information on the TEL AFA 500 in North America contact Holland Safety Equipment at 847- 680-9930 or

slide 7:

TEL AFA 500 TROUBLESHOOTING GUIDE Problem Checkfor… NoLights  Powercordpluggedsecurelyintobackofmonitor  Powersupplypluggedintooutlet  Correctvoltagetooutlet Greenlightblinking  Unit maybein“permanenthornsilence”mode.PressandholdENTERandSETbuttons for10seconds.  Unit maybeinNightSetbackmode.Thismodeisactivatedbysendinganexternalsignal intotherelayinputinthebackofthemonitor.Unitwillreturntonormaloperating modesolidgreenlightwhen NightSetbackmodeisdeactivatedbyexternalsignal. Bothlights blinkinghorn sounding  Unitisincalibrationmode.Tocalibratemovesashtoapositionthatgivesfacevelocity equaltothedesiredalarmpointandperformsinglepointcalibration pressandhold ENTERandSETbuttontogetherforfiveseconds toinitiateairsampling . Redlightblinking  Unitisinalarmmodeandhornistemporarilysilenced.Lowerthesashtogenerate greaterfacevelocitythenraisesash. Whenthefacevelocitygoesbelowthealarm pointyoushouldthengetasolidredlightandthehorn.  Unit maybeinNightSetbackmode.Thismodeisactivatedbysendinganexternalsignal intotherelayinputinthebackofthemonitor.Unitwillreturntonormaloperating modesolidgreenlightorsolidredlightandhorn whenNightSetbackmodeis deactivatedbyexternalsignal. Unitwillnottakea calibration  Makesurefanisrunningandairisbeingexhaustedthroughthehood.  Makesurehoseisconnectedproperlyattheside wallandtotherearofthemonitor.If disconnectedreconnectandcalibrateagainpertheownersmanual.  Makesureyouarefollowingthedirectionsintheownersmanualfortheproper calibration.TheAFA500hastwomethodsofcalibrating.Mostunitsareshippedfrom thefactoryreadyfor thesingleUpointcalibrationmethod. Forotherissues  CallHSE847U680U9930forcustomerservicephoneassistance. Holland Safety Equipment • 726 McKinley Ave. Libertyville IL 60048 • Phone: 847-680-9930 • Fax: 847-680-9938

authorStream Live Help