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© 2021 All rights reserved. Data subject to change without notice.

LPT - Operation Manual

Rev. E | 2021.03

5.2 Interior System Layout

NUMBER

FEATURE

FUNCTION

Œ

Jumpers

For calibrations & test functions

•

Test Points: TP-1 & TP-2

For measuring voltage output

Ž

Wiring Terminal

Pluggable wiring terminal

•

Internal LED

Calibration status indicator

Œ

•

•

Ž

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Содержание LPT Series

Страница 1: ...Operation Manual www critical environment com LPTLow Power Transmitter Rev E 2021 03...

Страница 2: ...ures 10 3 INSTRUMENT SPECIFICATIONS 11 3 1Technical Specifications 11 3 2 Enclosure Dimensions 13 4 SENSOR SPECIFICATIONS 14 4 1 List of Available Internal Sensors 14 4 2 Calibration Extending Firmwar...

Страница 3: ...Base 22 6 6 2 Enclosure Bottom 23 6 7Wiring Connections 23 6 7 1 Power Output Connection 24 6 7 2Wire Gauge vs Run Length 25 6 7 3 Open Loop 26 7 OPERATION 26 7 1 System Operation 26 7 2 Fault Detect...

Страница 4: ...ect to change without notice LPT Operation Manual Rev E 2021 03 9 ACCESSORIES 39 9 1 Splash Guard 39 9 2 Calibration Adapter Clip Cal Clip 40 9 3 Metal Protective Guard 40 9 4 Calibration Kit 41 10 MA...

Страница 5: ...o instructions indicated in this manual This instrument should be inspected and calibrated regularly by a qualified and trained technician For more information refer to sections 10Maintenance and 8 Ca...

Страница 6: ...he manual Critical EnvironmentTechnologies is not liable for auxiliary interfaced equipment or consequential damage All returned goods must be pre authorized by obtaining a Returned Merchandise Author...

Страница 7: ...ate for expected repairs prior to the performance of any service work Pack the equipment well in its original packing if possible as we cannot be held responsible for any damage incurred during shippi...

Страница 8: ...ished by CETCI The manufacturer makes no warranty or representation expressed or implied including any warranty of merchantability or fitness for purpose with respect to this manual All information co...

Страница 9: ...and oxygen depletion environments It features a two wire loop power three wireVDC or four wireVAC power 4 20 mA linear output signal thermal resetting fuses temperature compensation and visual LED ind...

Страница 10: ...to protec sensor in wash down applications IP54 rated when factory installed RoHS compliant circuit boards Easy maintenance economical Includes sensor CEF calibration extending firmware for parking g...

Страница 11: ...lus termination resistor at 16VDC Maximum 316 load wiring plus termination resistor at 12VAC Wiring VDC two or three conductor shielded 18 awg or larger stranded within conduit VAC four conductor shie...

Страница 12: ...RD ONLY LA CERTIFICATION ACNOR COUVRE UNIQUEMENT LES RISQUES DE CHOC ELECTRIQUE ET D INCENDIE D ORIGINE ELECTRIQUE Conforms to CSA C22 2 No 205 M1983 R2009 UL508 Edition 17 2007 Conforms to EMC Direct...

Страница 13: ...2021 All rights reserved Data subject to change without notice 13 Rev E 2021 03 LPT Operation Manual 3 2 Enclosure Dimensions 1 91 48 5 mm 2 24 57 mm with splash guard not shown 5 0 127 mm 5 0 127 mm...

Страница 14: ...ioxide NO2 LPT END 0 10 ppm 3 years Oxygen O2 LPT O2 0 25 vol 3 years Sulphur Dioxide SO3 LPT SO2 0 20 ppm 2 years 4 2 Calibration Extending Firmware CEF and Sensor Aging for CO and NO2 Sensors LPT sy...

Страница 15: ...15 Rev E 2021 03 LPT Operation Manual 5 FEATURES FUNCTIONS 5 1 Exterior Enclosure NUMBER FEATURE FUNCTION Door Hinge Secures door LED Indicator Indicates Power Fail Door Screw Secures door Sensor Open...

Страница 16: ...ce LPT Operation Manual Rev E 2021 03 5 2 Interior System Layout NUMBER FEATURE FUNCTION Jumpers For calibrations test functions Test Points TP 1 TP 2 For measuring voltage output WiringTerminal Plugg...

Страница 17: ...p for 24 hours prior to considering the gas readings to be accurate NOTE All sensors are calibrated in the factory and do not require calibration at the time of a routine installation NOTE Temperature...

Страница 18: ...amaging the circuit board or internal components There are no serviceable elements other than the calibration instructions outlined in this manual There are no replaceable components except the sensor...

Страница 19: ...nstallation simply locate the lid hinges over the installed base hinges and pull toward you The hinges should easily snap back into place The ABS Polycarbonate enclosure has one screw securing the doo...

Страница 20: ...ory installed splash cover p n SCS 8000 WSG Standard gas sensors like CO NO2 and O2 can be protected with the factory installed splash guard Sticky gas sensors like Cl2 and O3 do not work with a splas...

Страница 21: ...the gas relative to air Heavier than air gases should be detected 6 in 15 cm from the floor lighter than air gas sensors should be placed on or near the ceiling and gases which have a density close t...

Страница 22: ...ration Manual Rev E 2021 03 NOTE CETCI considers 4 6 ft from the floor as the Breathing Zone when it applies to sensors installed for vehicle exhaust applications 6 6 Enclosure Mounting Components 6 6...

Страница 23: ...nnections prior to powering the transmitter Damage from incorrect wiring connections or from too much voltage applied is not covered under warranty All wiring should be run in EMT or better conduit pr...

Страница 24: ...connected to terminal four Refer to Wiring Examples NOTE DO NOT USE SOLID COREWIRE ATTHEWIRINGTERMINAL STRIP When using solid core wiring for distribution in the conduit use stranded wire pigtails 18...

Страница 25: ...00 18 43 200 16 65 500 12VAC 316 assume a 200 termination resistor 20 5 600 18 8 900 16 13 583 NOTES The termination resistor could be as high as 500 10 volt measurement at 20 mA A poor quality 24VAC...

Страница 26: ...on is indicated by a solid light on the external LED During normal operation the gas level will be reported through the current loop and a rough reading can be obtained from the voltage test points Th...

Страница 27: ...mpleted Refer to the table below for preset gas levels Voltage Output toTest Points TP 1 and TP 2 NOTE This output is intended as a rough indication of the gas level and has not been precisely calibra...

Страница 28: ...LE Perform Zero Null and Span Calibration GAS1 or GAS2 or GAS3 CAL To override the calibration if the zero and span value is over range high or low OVER CAL During warm up and normal mode check the vo...

Страница 29: ...libration gas value The OVER jumper setting allows overriding the value if out of range during calibration but still at a reasonable value The default factory set location are as shown Jumper 1 is in...

Страница 30: ...d hose directing span gas into the sensor may result in slightly higher readings It is important to note that the type of gas mixture how old the gas is and what temperature it has been stored at will...

Страница 31: ...authorized distributor or you can supply your own gas and equipment as long as the gas meets the minimum specifications NOTE CETCI does not ship gas cylinders outside of Canada 8 1 5 Gas Testing Freq...

Страница 32: ...ut suggested The range of 0 4 0VDC is equal to the full measurement range of the sensor e g CO sensor has a standard measurement range of 0 200 ppm Therefore 4 0VDC 200 ppm NOTE If an inappropriate co...

Страница 33: ...8VDC GAS2 20 9 vol 3 34VDC GAS1 19 0 vol 3 04VDC Cl2 0 5 ppm GAS3 5 ppm 4 00VDC GAS2 3 ppm 2 40VDC GAS1 1 ppm 0 80VDC O3 0 2 ppm GAS3 1 ppm 2 00VDC GAS2 1 ppm 2 00VDC GAS1 1 ppm 2 00VDC If the referen...

Страница 34: ...ach the tubing to the nozzle on the Cal Clip Step 3 Move the Jumper 2 on J2 to position CAL Step 4 If this level possible residual gas is too high the internal LED will flash with a short OFF time and...

Страница 35: ...nt loop will follow the gas level based on the ideal span of the sensor The spanning can be cancelled by removing the Jumper 2 from the CAL position and move to IDLE position before the spanning is fi...

Страница 36: ...to test pointsTP 1 andTP 2 the measured voltage will start moving towards the voltage calculated for the span gas value 8 3 Calibrating an Oxygen Sensor When calibrating an Oxygen sensor the process i...

Страница 37: ...1 into one of the GAS positions and Jumper 2 into the OVER position This will cause the LPT to output the corresponding signal on both the current loop and the voltage test points If the service pers...

Страница 38: ...the equipment has been calibrated properly CETCI is not responsible for improperly calibrated transmitters Follow manual instructions carefully Step 5 Once the reading on the voltage meter is stable y...

Страница 39: ...the sensitivity of the sensor is calculated out of range more than the OVER can compensate for the internal LED will turn on solid the front LED will remain off and the current loop will output 20 mA...

Страница 40: ...ve guard p n SCS 8000 RSG is made of heavy gauge galvanized metal and helps protect against abrasive damage theft and vandalism to the transmitters The 16 gauge galvanized steel has 13 mm in square op...

Страница 41: ...H x 91 mm D 7 0 inW x 6 3 in H x 3 6 in D 9 4 Calibration Kit p n CET 715A CK1 The Calibration Kit contains the items necessary for common field and shop calibrations It comes in a durable hard plasti...

Страница 42: ...itters location the transmitter needs to be protected from over spray and the sensor port should not receive paint fumes these fumes may damage or reduce the life of the sensor 11 TROUBLE SHOOTING LPT...

Страница 43: ...The sensor needs override Move Jumper 1 to OVER position The internal LED turn solid green and the outside LED remains OFF It failed calibration Try to recalibrate the sensor again LPT powered up out...

Страница 44: ...145 7391VantageWay Delta BC V4G 1M3 Canada Toll Free 1 877 940 8741 Tel 1 604 940 8741 www critical environment com 2021 Critical EnvironmentTechnologies Canada Inc All rights reserved Data in this pu...

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