Critical environment technologies Lpt series User manual

Operation Manual

www.critical-environment.com

LPTLow Power Transmitter

Rev. E | 2021.03

LPT - Operation Manual Rev. E | 2021.03

TABLE OF CONTENTS

1 POLICIES.......................................................................................................... 5

1.1 Important Note................................................................................................5

1.2Warranty Policy................................................................................................6

1.3 Service Policy...................................................................................................6

1.4 Copyrights........................................................................................................8

1.5 Disclaimer........................................................................................................8

1.6 Revisions..........................................................................................................8

2 INTRODUCTION .............................................................................................9

2.1 General Description..........................................................................................9

2.2 Key Features...................................................................................................10

3 INSTRUMENT SPECIFICATIONS .................................................................11

3.1Technical Specications..................................................................................11

3.2 Enclosure Dimensions....................................................................................13

4 SENSOR SPECIFICATIONS...........................................................................14

4.1 List of Available Internal Sensors....................................................................14

4.2 Calibration Extending Firmware (CEF) and Sensor Aging................................14

5 FEATURES & FUNCTIONS............................................................................15

5.1 Exterior Enclosure ..........................................................................................15

5.2 Interior System Layout...................................................................................16

6 INSTALLATION..............................................................................................17

6.1 Special Considerations for DierentType of Sensors.......................................17

6.2 General Safety Warnings................................................................................18

6.3 Protection Against Electrical Risks..................................................................18

6.4 Protection Against Mechanical Risks..............................................................19

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6.5 Mounting theTransmitter..............................................................................19

6.5.1Wet Environment Considerations ....................................................................20

6.5.2 EMI and RF Interference Considerations..........................................................20

6.5.3 Sensor Mounting Height (Sensor Dependent).................................................21

6.6 Enclosure Mounting Components ..................................................................22

6.6.1 Enclosure 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 Detection...............................................................................................26

7.3Test Functions ................................................................................................27

7.4 Jumpers.........................................................................................................27

8 CALIBRATION................................................................................................30

8.1 Calibration Specications...............................................................................30

8.1.1 Gas..................................................................................................................30

8.1.2 Regulators & Flow...........................................................................................30

8.1.3 Adapters..........................................................................................................30

8.1.4 Calibration Frequency .....................................................................................31

8.1.5 Gas Testing Frequency (Bump Testing)............................................................31

8.1.6 Sticky Gases.....................................................................................................31

8.2 Calibrating the Internal Sensor ......................................................................32

8.3 Calibrating an Oxygen Sensor ........................................................................36

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 MAINTENANCE ..........................................................................................42

11 TROUBLE SHOOTING ................................................................................42

Rev. E | 2021.03 LPT - Operation Manual

1 POLICIES

1.1 Important Note

Read and understand this manual prior to using this instrument. Carefully read the warranty policy,

service policy, notices, disclaimers and revisions on the following pages.

This product must be installed by a qualied electrician or trained technician and according to

instructions indicated in this manual.This instrument should be inspected and calibrated regularly

by a qualied and trained technician. For more information, refer to sections 10 Maintenance and 8

Calibration of this manual.

This instrument has not been designed to be intrinsically safe. For your safety, do not use it in

classied hazardous areas (explosion-rated environments).

INSTRUMENT SERIAL NUMBER:

______________________________________________________

PURCHASE DATE:

______________________________________________________

PURCHASED FROM:

______________________________________________________

LPT - Operation Manual Rev. E | 2021.03

1.2 Warranty Policy

Critical Environment Technologies Canada Inc. warrants the products we manufacture (excluding

sensors, battery packs, batteries, pumps, and lters) to be free from defects in materials and

workmanship for a period of two years from the date of purchase from our facility. As a reminder,

sensors are consumable items and once they leave our factory, we cannot reuse or resell them.

As such, all sensor sales are nal. Should the sensor itself be faulty, there is a one-year pro-rated

warranty that would apply from the date of purchase from our facility.

The warranty status may be aected if the instrument has not been used and maintained as per

the instructions in the manual or has been abused, damaged, or modied in any way. The product

is only to be used for the purposes stated in the 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 Authorization

(RMA) number. All goods must be shipped to Critical EnvironmentTechnologies freight prepaid.

Contact the manufacturer for an RMA number and procedures required for product transport.

Due to ongoing research, development, and product testing, the manufacturer reserves the right to

change specications without notice.The information contained herein is based on data considered

accurate. However, no warranty is expressed or implied regarding the accuracy of this data.

1.3 Service Policy

CETCI maintains an instrument service facility at the factory. Some CETCI distributors / agents may

also have repair facilities; however, CETCI assumes no liability for service performed by anyone

other than CETCI personnel.

Repairs are warranted for 90 days after date of shipment (sensors have individual warranties).

Should your instrument require non-warranty repair, you may contact the distributor from whom it

Rev. E | 2021.03 LPT - Operation Manual

was purchased or you may contact CETCI directly.

Prior to shipping equipment to CETCI, contact our oce for an RMA #. All returned goods must be

accompanied with an RMA number.

If CETCI is to do the repair work, you may send the instrument, prepaid, to:

Attention: Service Department

Critical Environment Technologies Canada Inc.

Unit 145, 7391 Vantage Way

Delta, BC, V4G 1M3

You must include your Returned Merchandise Authorization (RMA) number, address, telephone

number, contact name, shipping / billing information, and a description of the defect as you

perceive it. You will be contacted with a cost estimate 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 shipping to our facility. All incurred shipping

charges, duties and taxes are your responsibility.

For liability reasons, CETCI has a policy of performing all needed repairs to restore the instrument to

full operating condition.

1.4 Copyrights

This manual is subject to copyright protection; all rights are reserved. Under international and

domestic copyright laws, this manual may not be copied or translated, in whole or in part, in any

manner or format, without the written permission of CETCI.

1.5 Disclaimer

Under no circumstances will CETCI be liable for any claims, losses or damages resulting from or

arising out of the repair or modication of this equipment by a party other than CETCI service

LPT - Operation Manual Rev. E | 2021.03

technicians, or by operation or use of the equipment other than in accordance with the printed

instructions contained within this manual or if the equipment has been improperly maintained or

subjected to neglect or accident. Any of the forgoing will void the warranty.

Under most local electrical codes, low voltage wires cannot be run within the same conduit as line

voltage wires. It is CETCI policy that all wiring of our products meet this requirement.

It is CETCI policy that all wiring be within properly grounded (earth or safety) conduit.

1.6 Revisions

This manual was written and published by CETCI.The manufacturer makes no warranty or

representation, expressed or implied including any warranty of merchantability or tness for

purpose, with respect to this manual.

All information contained in this manual is believed to be true and accurate at the time of printing.

However, as part of its continuing eorts to improve its products and their documentation, the

manufacturer reserves the right to make changes at any time without notice. Revised copies of this

manual can be obtained by contacting CETCI or visiting www.critical-environment.com.

Should you detect any error or omission in this manual, please contact CETCI at the following

address:

Critical Environment Technologies Canada Inc.

Unit 145, 7391VantageWay, Delta, BC,V4G 1M3, Canada

Toll Free: +1.877.940.8741

Telephone: +1.604.940.8741

Fax: +1.604.940.8745

Email: marketing@cetci.com

Website: www.critical-environment.com

Rev. E | 2021.03 LPT - Operation Manual

In no event will CETCI, its ocers or employees be liable for any direct, special, incidental or

consequential damages resulting from any defect in any manual, even if advised of the possibility

of such damages.

2 INTRODUCTION

2.1 General Description

Thank you for purchasing our single sensor, analog LPT Low PowerTransmitter.

The LPT is a rugged, easy-to-use analog gas detection transmitter for use as part of a xed system

with a Controller in non-hazardous (non-explosion rated) environments. Ideal applications include

car parks, vehicle repair, aquatic centers, ice rinks and oxygen depletion environments.

It features a two-wire loop power, three-wireVDC or four-wire VAC power, 4 - 20 mA linear output

signal, thermal resetting fuses, temperature compensation, and visual LED indication for power and

fault conditions (refer to Section 3.1 Technical Specications), all in a RoHS compliant package.

It comes standard with a water / dust tight, corrosion resistant ABS / polycarbonate enclosure with

a hinged, secured door. With the optional splash guard installed, the enclosure is IP54 rated and

ideal for use in water spray or wash down applications.

The LPT operates by diusion. The sensors used in this device are accurate enough to measure to

Occupational Health & Safety (OHS) hazardous levels for toxic gases.

If after reading through the manual, you have any questions, please do not hesitate to contact our

Technical Service Department for technical support.

LPT - Operation Manual Rev. E | 2021.03

2.2 Key Features

• Single sensor

• 2-wire loop, 3-wire VDC or 4-wire VAC power

• Linear 4 - 20 mA output signal

• Standard water / dust tight, corrosion resistant enclosure (drip proof)

• Optional splash guard to protec sensor in wash down applications; IP54 rated when factory

installed

• RoHS compliant circuit boards

• Easy maintenance, economical

• Includes sensor CEF (calibration extending rmware) for parking garage applications

• Auto resetting fuses

3 INSTRUMENT SPECIFICATIONS

3.1 Technical Specications

MECHANICAL

Enclosure ABS / Polycarbonate, copper coated interior to reduce RF

interferance, IP54 rated with splash guard installed

Weight 400 g (14 oz)

Size 127 mm x 127 mm x 48.5 mm (5.0”x 5.0”x 1.91”)

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