Critical environment technologies Lpt User manual

Operation Manual

www.critical-environment.com

LPTEconomical Transmitter (Electrochemical Sensor)

Rev. C | 2013.06

LPT - Operation Manual Rev. C | 2013.06

TABLE OF CONTENTS

1 POLICIES..........................................................................................................4

1.1 Important Note................................................................................................4

1.2Warranty Policy................................................................................................5

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

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

1.6 Revisions..........................................................................................................7

2 INTRODUCTION .............................................................................................8

2.1 General Description..........................................................................................8

2.2 Key Features.....................................................................................................9

3 INSTRUMENT SPECIFICATIONS .................................................................10

3.1Technical Specications..................................................................................10

3.2 Standard Enclosure Dimensions.....................................................................12

4 SENSOR SPECIFICATIONS...........................................................................13

4.1 Sensor Specications .....................................................................................13

4.2 Calibration Extending Firmware (CEF) and Sensor Aging................................15

5 FEATURES & FUNCTIONS............................................................................16

5.1 Exterior Enclosure ..........................................................................................16

5.2 Interior System Layout...................................................................................17

6 INSTALLATION..............................................................................................18

6.1 Sensor Mounting Heights...............................................................................19

6.2 Enclosure Mounting Components ..................................................................20

Enclosure Base......................................................................................................... 20

Enclosure Bottom..................................................................................................... 21

Rev. C | 2013.06 LPT - Operation Manual

6.3Wiring Connections........................................................................................21

Wiring Examples...................................................................................................... 22

Wire Gauge vs Run Length.......................................................................................23

Open Loop................................................................................................................ 24

7 OPERATION...................................................................................................24

7.1 System Operation...........................................................................................24

7.2 Fault Detection...............................................................................................24

7.3Test Functions ................................................................................................25

7.4 Jumpers.........................................................................................................25

Voltage & Gas Concentration Level ReferenceTable: ................................................ 28

8 CALIBRATION................................................................................................28

8.1 Calibration Specications...............................................................................28

Gas...........................................................................................................................28

Adapters .................................................................................................................. 29

8.2 Calibrating Sensors ........................................................................................29

Calibration Frequency..............................................................................................29

Gas Testing Frequency (BumpTesting)..................................................................... 29

8.3 Calibration Procedure.....................................................................................30

9 ACCESSORIES ...............................................................................................33

9.1 Splash Guard..................................................................................................33

9.2 Calibration Kit................................................................................................33

9.3 Metal Protective Guard ..................................................................................34

11 TROUBLE SHOOTING ................................................................................36

LPT - Operation Manual Rev. C | 2013.06

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:

______________________________________________________

Rev. C | 2013.06 LPT - Operation Manual

1.2 Warranty Policy

• Disconnect power before servicing

• Supply: 24 V

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

warrants this instrument to be free from defects in materials and workmanship for a period of two

(2) years from the date of purchase.

Individual sensor elements have dierent warranties. Please check with the manufacturer for

specic sensor warranty.

The warranty status may be aected if the instrument has not been maintained and calibrated

as per the instructions indicated in this manual or has been abused or damaged in any way. The

manufacturer is not liable for auxiliary interfaced equipment or consequential damage. This

instrument is only to be used for purposes stated herein.

Warranty does not include third party trouble-shooting costs or freight to / from the manufacturer’s

facility. CETCI’s liability is limited to replacement or repair of the equipment manufactured.

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 return merchandise authorization (RMA) number. Contact the

manufacturer for a number and procedures required for product transport.

LPT - Operation Manual Rev. C | 2013.06

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

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

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.

Rev. C | 2013.06 LPT - Operation Manual

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

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.

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:

LPT - Operation Manual Rev. C | 2013.06

Critical EnvironmentTechnologies 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: mark[email protected]

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 Low PowerTransmitter for electrochemical sensor.

The LPT transmitters are rugged, user-friendly analog gas detection transmitter for use in non-

hazardous (non-explosion rated) environments such as, commercial HVAC and light industrial

applications.

A standard transmitter features a green colored LED indicating light for power and fault condition

(refer to section 3.1 Technical Specications), an analog output signal and a standard water / dust

tight enclosure.

Both carbon monoxide (CO) and nitrogen dioxide (NO2) electrochemical sensors are available for

use with this gas detector and operate by diusion.The sensors utilized in this device are accurate

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

Rev. C | 2013.06 LPT - Operation Manual

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

• 2-wire loop, 3-wireVDC or 4-wireVAC power

• Linear 4 - 20 mA output signal

• Standard water / dust tight enclosure (drip proof)

For splash or hosedown applications, add splash guard

• Single sensor: carbon monoxide (CO) or nitrogen dioxide (NO2)

• RoHS compliant circuit boards

• Easy maintenance

• Economical

• Includes sensor CEF (calibration extending rmware)

• Auto resetting fuse

• Automated calibration procedure

LPT - Operation Manual Rev. C | 2013.06

3 INSTRUMENT SPECIFICATIONS

3.1 Technical Specications

GAS TYPE

Carbon Monoxide (CO)

Nitrogen Dioxide (NO2)

MECHANICAL

Enclosure ABS / Polycarbonate

Weight 400 g (14 oz)

Size 5.0”x 4.0”x 1.9”(127 mm x 102 mm x 48 mm)

ELECTRICAL

Power Requirement

2-wire mode

3-wire mode

4-wire mode

12 – 30VDC, 1 Watt

12 – 27VAC, 1 VA

Use Class 2 transformer. See page 22.

Current Draw Maximum 25 mA

Outputs

Linear 4 - 20 mA

Maximum 216 Ω load (wiring plus termination resistor) at 16 VDC

Maximum 316 Ω load (wiring plus termination resistor) at 12 VAC

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