Critical environment technologies Lpt-a series User manual

Operation Manual

www.critical-environment.com

LPT-AAnalog Transmitter

Rev. H | 2018.04

LPT-A - Operation Manual Rev. H | 2018.04

TABLE OF CONTENTS

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

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

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

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

1.4 Copyrights........................................................................................................7

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 Standard Enclosure Dimensions.....................................................................14

4 SENSOR SPECIFICATIONS...........................................................................15

4.1 List of Available Internal Sensors....................................................................15

4.2 List of Available ESH-A Remote Sensors .........................................................17

4.3 Special Considerations for Sensors .................................................................17

4.4 Calibration Extending Firmware (CEF) and Sensor Aging................................19

5 FEATURES & FUNCTIONS............................................................................19

5.1 Exterior Enclosure ..........................................................................................19

5.2 Interior System Layout...................................................................................21

5.2.1 Electrochemical Sensor Board.........................................................................21

5.2.2 Solid State (Internal) Sensor Board .................................................................22

5.2.3 Solid State (Remote) Sensor Board..................................................................23

Rev. H | 2018.04 LPT-A - Operation Manual

6 INSTALLATION..............................................................................................24

6.1 General Safety Warnings................................................................................24

6.2 Protection Against Electrical Risks..................................................................25

6.3 Protection Against Mechanical Risks..............................................................25

6.4 System Installation........................................................................................26

6.4.1Wet Environment Considerations ....................................................................26

6.4.2 EMI and RF Interference Considerations..........................................................27

6.5 Sensor Mounting Heights...............................................................................27

6.6 Enclosure Mounting Components ..................................................................29

6.6.1 Enclosure Base ................................................................................................29

6.6.2 Enclosure Bottom............................................................................................30

6.7Wiring Connections........................................................................................30

6.7.1 Power Connection...........................................................................................31

Wiring Example: 3-Wire..................................................................................31

Wiring Example: 4-Wire..................................................................................31

6.7.2 Relay Connection ............................................................................................32

Wiring Example: Relay ....................................................................................32

6.7.3Wiring LPT-A to Remote ESH Sensor (dongle style).........................................33

Wiring Example: Remote ESH (dongle style) Sensor .......................................33

6.7.4Wiring LPT-A to ESH-A Remote Sensor............................................................34

Wiring Example: ESH-A Remote Sensor ..........................................................34

6.7.5Wire Gauge vs Run Length...............................................................................35

6.7.6 Open Loop.......................................................................................................36

7 SYSTEM OPERATION & CONFIGURATION................................................37

7.1 Power Up andWarm-up.................................................................................37

7.2 Display Select.................................................................................................38

7.3 Enable / Disable the Buzzer............................................................................39

7.4 Selecting the Output Signal...........................................................................39

LPT-A - Operation Manual Rev. H | 2018.04

7.5 Fault Detection...............................................................................................40

7.6Test Function..................................................................................................40

7.7 Relay Operation / Setting the“Alarm”Level ...................................................41

8 CALIBRATION................................................................................................43

8.1 Calibration Specications...............................................................................43

8.1.1 Gas..................................................................................................................43

8.1.2 Regulators & Flow...........................................................................................44

8.1.3 Adapters..........................................................................................................44

8.1.4 Humidier.......................................................................................................44

8.1.5 Calibration Frequency .....................................................................................44

8.1.6 Gas Testing Frequency (Bump Testing)............................................................45

8.1.7 Sticky Gases.....................................................................................................45

8.1.8 Non-Intrusive Calibration................................................................................45

8.2 Setting the Calibration Gas Level....................................................................46

8.3 Calibrating the Internal Sensor ......................................................................46

8.4 Calibrating an ESH-A Remote Sensor Connected to an LPT-A.........................53

8.4.1 Zero and Span Calibration of a Responsive ESH-A Remote Sensor...................53

8.4.2 Zero Calibration of a New or Replacement ESH-A Remote Sensor....................53

8.5 Calibrating an Oxygen Sensor ........................................................................54

9 ACCESSORIES ...............................................................................................59

9.1 Splash Guard..................................................................................................59

9.2 MagneticWand..............................................................................................59

9.3 Metal Protective Guard ..................................................................................60

9.4 Calibration Kit................................................................................................60

10 MAINTENANCE ..........................................................................................61

11 TROUBLE SHOOTING ................................................................................62

Rev. H | 2018.04 LPT-A - 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 factory 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 Section 8 Calibration

and Section 10 Maintenance 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-A - Operation Manual Rev. H | 2018.04

1.2 Warranty Policy

Critical Environment Technologies Canada Inc. (CETCI), also referred to as the manufacturer,

warrants this instrument, (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. The sensors have a warranty period of one year on a pro-rated basis from

the date of purchase from our facility. If the product should become defective within this

warranty period, we will repair or replace it at our discretion.

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

instructions in this manual or has been abused, damaged, or modied in any way. This instrument

is only to be used for purposes stated herein. The manufacturer is not liable for auxiliary interfaced

equipment or consequential damage.

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.

All goods must be shipped to the manufacturer by prepaid freight. All returned goods must be

pre-authorized by obtaining a Returned Merchandise Authorization (RMA) number. Contact the

manufacturer for a number and procedures required for product transport.

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. H | 2018.04 LPT-A - 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 VantageWay

Delta, BC, V4G 1M3

Always 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.

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

full operating condition.

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.

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.

LPT-A - Operation Manual Rev. H | 2018.04

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

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

Rev. H | 2018.04 LPT-A - Operation Manual

Telephone: +1.604.940.8741

Fax: +1.604.940.8745

Email: marketing@cetci.com

Website: www.critical-environment.com

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 LPT-A Analog Transmitter.

The LPT-A transmitter is a single sensor, analog transmitter available with a wide range of sensors

and sensor types of continuous monitoring of gases or oxygen in non-hazardous (non-explosion

rated) environments such as commercial HVAC and light industrial applications.

Operating as an analog transmitter or a stand-alone xed system, the LPT-A oers a back lit LCD

display, an internal audible alarm, one dry relay contact, a jumper selectable 4-20 mA or 0 - 10 VDC

analog output signal, 3-wireVDC or 4-wireVAC power, a thermal resetting fuse and temperature

compensation all in a RoHS compliant package. It comes in a 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 washdown

applications.

LPT-A transmitter is available with internal or remote sensor options. All LPT-A transmitters operate

by diusion. The sensors utilized in this device are accurate enough to measure to Occupational

LPT-A - Operation Manual Rev. H | 2018.04

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

service department for technical support.

2.2 Key Features

• Single channel

• Wide range of internal sensor types including electrochemical, solid state andTVOC

• Remote combustible and PID sensor options

• Graphic LCD display (user selectable function)

• Audible alarm

• 3-wireVDC or 4-wireVAC power

• 24 volt DC or AC power (nominal)

• Linear 4 - 20 mA or 0 - 10 volt output signal

• 1 dry contact relay, 30 volt 2 amps maximum

• Standard water / dust tight, corrosion resistant enclosure (drip proof).With optional splash

guard installed, the enclosure is IP54 rated.

• Copper coated interior to reduce RF interference

• RoHS compliant circuit boards

• Includes sensor Calibration Extending Firmware (CEF) for some electrochemical sensors

• Auto resetting fuse

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