1. Manuals
  2. Brands
  3. Critical Environment Technologies Manuals
  4. Automobile Accessories
  5. LPT-P
  6. Operation manual

Critical Environment Technologies LPT-P Operation Manual

Digital car park transmitter
Hide thumbs
Table of Contents

Advertisement

Quick Links

Download this manual
Operation Manual
Rev. B | 2018.08
LPT-P
Digital Car Park Transmitter
www.critical-environment.com

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the LPT-P and is the answer not in the manual?

Questions and answers

Summary of Contents for Critical Environment Technologies LPT-P

  • Page 1 Operation Manual Rev. B | 2018.08 LPT-P Digital Car Park Transmitter www.critical-environment.com...

  • Page 2: Table Of Contents

    LPT-P - Operation Manual Rev. B | 2018.08 TABLE OF CONTENTS 1 POLICIES ......................5 1.1 Important Note ....................5 1.2 Warranty Policy ....................6 1.3 Service Policy ....................6 1.4 Copyrights and Registered Trademarks ............7 1.5 Disclaimer ......................7 1.6 Revisions ......................8 2 INTRODUCTION ..................... 9 2.1 General Description ..................9...
  • Page 3 Rev. B | 2018.08 LPT-P- Operation Manual 5.4.2 EMI and RF Interference Considerations ............5.4.3 Mounting Height (Sensor Dependent) ............5.5 Enclosure Mounting Components ..............23 5.5.1 Enclosure Base ....................5.5.2 Enclosure Bottom .................... 5.6 Wiring Connections ..................24 5.6.1 Power & Output Connections ................
  • Page 4 7.3.5 Fault Reading ....................7.3.6 Calibration Failure ................... 7.4 Calibrating an ESH-A Remote Sensor Connected to an LPT-P ......46 7.4.1 Zero and Span Calibration of a Responsive ESH-A Remote Sensor ....7.4.2 Zero Calibration of a New or Replacement ESH-A Remote Sensor ....

  • Page 5: Policies

    Rev. B | 2018.08 LPT-P- 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.

  • Page 6: Warranty Policy

    Rev. B | 2018.08 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.

  • Page 7: Copyrights And Registered Trademarks

    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.

  • Page 8: Revisions

    LPT-P - Operation Manual Rev. B | 2018.08 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.

  • Page 9: Introduction

    Thank you for purchasing our LPT-P Digital Car Park Transmitter. The LPT-P is an economical, digital transmitter with up to three gas channels, designed to be part of a gas detection system for enclosed parking garages / car parks and auto repair shop applications.

  • Page 10: Key Features

    (WAN) output to Building Automation System (BAS) or Direct Digital Control (DDC) system. All LPT-P digital transmitters 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.

  • Page 11: Instrument Specifications

    Rev. B | 2018.08 LPT-P- Operation Manual 3 INSTRUMENT SPECIFICATIONS 3.1 Technical Speci cations MECHANICAL ABS / Polycarbonate, IP54 rated with splash guard installed. Enclosure Copper coated interior to reduce RF interference. Weight 400 g / 14 oz Size 127 mm x 127 mm x 71 mm / 5.0” x 5.0” x 2.8”...
  • Page 12 LPT-P - Operation Manual Rev. B | 2018.08 INPUT / OUTPUT Modbus® ID: 100 (default, con gurable) Baud rate: 19,200 (default, con gurable) Modbus® Communication Data bits: 8 (standard) Start bits: 1 p/n: LPT-P Stop bits: 1 Parity: none Analog signal...

  • Page 13: Internal Sensor Gas Types

    Rev. B | 2018.08 LPT-P- Operation Manual Conforms to: FCC. This device complies with part 15 of the FCC Rules, Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.

  • Page 14: Enclosure Dimensions

    LPT-P - Operation Manual Rev. B | 2018.08 3.4 Enclosure Dimensions Above dimensions are shown with optional splash guard. Without splash guard, thickness is 71 mm (2.8“). The area required for enclosure door to be open 90 degrees is 178 mm (7.0”) or 254 mm (10.0”) for fully open.

  • Page 15: Instrument Features

    4 INSTRUMENT FEATURES 4.1 Exterior Enclosure Œ • Ž • ‘ • Œ ARROW UP Ž ENTER Ž Side view of LPT-P showing location of Magnetic Sensors. ARROW DOWN Ž © 2018 All rights reserved. Data subject to change without notice.
  • Page 16 LPT-P - Operation Manual Rev. B | 2018.08 NUMBER FEATURE FUNCTION Secures door to base and allows Œ Door Hinge easy opening and closing Graphic LCD display. • Display with white border Use a magnetic wand to access Magnetic Switches (arrow up, menu options and program Ž...

  • Page 17: Interior System Layout

    Rev. B | 2018.08 LPT-P- Operation Manual 4.2 Interior System Layout Ž Œ • Œ • • Œ • NUMBER FEATURE FUNCTION Access menu options and program functions using Œ Programming Buttons buttons inside the enclosure. (Arrow up, Enter, Arrow down) •...

  • Page 18: Installation

    5 INSTALLATION The sensor in the LPT-P goes through a burn in period at our factory prior to shipiping so it is ready for operation upon arrival. If you install the LPT-P when it arrives the sensors will require about a 5 minute warm up period.

  • Page 19: General Safety Warnings

    5.1 General Safety Warnings The LPT-P is intended for indoor use, permanently mounted at a height that is appropriate for the type of gas being monitored. See Section 5.4 Mounting the Transmitter. The LPT-P should be protected from extreme weather conditions.

  • Page 20: Protection Against Mechanical Risks

    5.4 Mounting the Transmitter The LPT-P should be mounted on a at vertical surface using the four 4.4 mm / 0.175 in diameter mounting holes provided to maintain water tight status. Care should be taken to ensure that the face of the LPT-P is not obstructed in order to maximize the sensor’s exposure to the environment...

  • Page 21: Wet Environment Considerations

    5.4.1 Wet Environment Considerations If the LPT-P is to be installed in a potential hose-down application or any application whereby liquid could be directed towards the sensor opening, the LPT-P should be ordered with an optional attached splash guard (factory installed).

  • Page 22: Mounting Height (Sensor Dependent)

    LPT-P - Operation Manual Rev. B | 2018.08 There are some installation procedures that will reduce the likelihood of getting faulty readings: 1. Locate the detectors and controllers out of the way from normal foot tra c and high energy equipment.

  • Page 23: Enclosure Mounting Components

    Rev. B | 2018.08 LPT-P- Operation Manual 5.5 Enclosure Mounting Components 5.5.1 Enclosure Base Ž Ž Œ • Œ Ž Ž • NUMBER FEATURE Door Hinge Œ 1/2” Conduit Entry Knockout • Mounting Holes Ž © 2018 All rights reserved. Data subject to change without notice.

  • Page 24: Enclosure Bottom

    • 5.6 Wiring Connections The LPT-P digital transmitter is a low voltage powered device. Any application of operating voltages higher than indicated in the speci cation may result in damage. Double check wiring connections prior to powering the transmitter. Damage from incorrect wiring connections or from too much voltage applied is not covered under warranty.

  • Page 25: Power & Output Connections

    5.6.1 Power & Output Connections If the LPT-P is being connected to either a QCC or FCS the supply voltage will either be supplied by the QCC or FCS and any additional power requirements of the system will be supplied by RPS-24VDC Remote Power Supply devices.

  • Page 26: Esh-A Remote Sensor Wiring Connection

    Each ESH-A is given the same serial number as the device it is being connected to. Make sure to connect the ESH-A to the LPT-P that has the same serial number or the system won’t work. Four-conductor, 16-18 awg stranded shielded cable is required for the ESH-A Remote Sensor wiring.

  • Page 27: System Operation & Configuration

    6 SYSTEM OPERATION & CONFIGURATION NOTE: The LPT-P is not a standalone gas detection device as it does not have an internal buzzer or on board relay. The LPT-P must be connected to a controller, a control panel, Direct Digital Control system (DDC) or Building Automation System (BAS).

  • Page 28: Accessing The Menu With Passcodes

    LPT-P - Operation Manual Rev. B | 2018.08 ARROW UP - used for going up through the menus or incrementing values or selecting an alpha character ENTER - used pirmarily as an enter key, either for getting to the next screen or...

  • Page 29: Power Up And Warm-Up

    NOTE: The LPT-P will be visible on the BAS / DDC system during the warm-up countdown but a correct reading will not show up until the unit has nished the warm-up period and the sensor(s) has stabilized.

  • Page 30: Display Select

    • HIGH - gas channel is in high alarm • FAULT - gas channel is in fault • COMM - controller has been unable to communicate with the LPT-P for at least 300 seconds; in addition, the backlight will illuminate making it easier to nd the gas...

  • Page 31: Set Lcd Display Contrast Level

    00 and 35. The factory default contrast level is 20. 6.6 Fault Detection The LPT-P has built in fault detection, and in the event of a problem with the measurement circuitry the transmitter will indicate a fault condition on the display. Normal operation will resume once the fault condition has been corrected.

  • Page 32: Modbus® Settings

    Individual transmitters being added to an existing system may require changes to the default Modbus® settings. 6.7.1 Change Modbus® ID If required, you can change the Modbus® ID assigned to an LPT-P transmitter. In the Hardware Con guration Menu (passcode 1001), press either ARROW to scroll through the menu and select Modbus®.

  • Page 33: Change Modbus® Baud Rate

    Rev. B | 2018.08 LPT-P- Operation Manual 6.7.2 Change Baud Rate All devices on the same network must have the same baud rate. The default Modbus® baud rate for all CETCI Modbus® devices is 19,200. If you need to change the baud rate, in the Hardware Con guration Menu (passcode 1001), press either ARROW to scroll through the menu and select BAUD.

  • Page 34: Modbus® Holding Registers

    CETCI for assistance. 6.8 Setting Channel Alarm Setpoints The LPT-P is con gurable as a one, two or three channel gas detector and each channel has three gas alarm setpoints, LOW, MID and HIGH which can be ascending or descending. The number entered as the setpoint is the exact number at which the gas concentration reading will be determined as being LOW, MID or HIGH.

  • Page 35: Setting The Mid Alarm Setpoint

    Rev. B | 2018.08 LPT-P- Operation Manual Press ENTER and use the ARROW keys to scroll through the menu and choose SP Low. Press ENTER and use the ARROW key to choose ASCENDING or DESCENDING. Press ENTER again to change the setpoint value by using the ARROW keys to increase or decrease the number.

  • Page 36: Setting The High Alarm Setpoint

    LPT-P - Operation Manual Rev. B | 2018.08 6.8.3 Setting the High Alarm Setpoint Follow the same procedure as the 7.8.1 Low Alarm Setpoint, choosing the SP High menu option. 6.8.4 Setting Hysteresis Hysteresis is the di erence between the ON point and OFF point of the alarm. You can set a hysteresis value that will be common for all alarm setpoints on that channel.

  • Page 37: Test Gas Reading Response / Send Test Reading To Controller

    This test allows you to send a forced gas reading to the controller without having to expose the sensor to actual gas, so you can make sure the LPT-P is connected to the controller properly after installation and is still initiating an appropriate response from the controller during routine maintenance checks.
  • Page 38 LPT-P - Operation Manual Rev. B | 2018.08 Press ENTER and use the ARROW keys to scroll through the menu and choose TEST. Press ENTER and use the ARROW key to increase or decrease the value and the ENTER key to move to the next digit.

  • Page 39: Calibration

    ) can be substituted for zero air when null adjusting electrochemical sensors. Contact CETCI for clari cation. Every LPT-P transmitter is calibrated in a chamber by true di usion method prior to leaving our facility. This method more closely emulates actual “real world” conditions. Field calibration using gas cylinder, regulator and hose directing span gas into the sensor may result in slightly higher readings.

  • Page 40: Calibration Frequency

    LPT-P - Operation Manual Rev. B | 2018.08 7.1.4 Calibration Frequency • Parking garage detectors: Once every 12 months • OHS applications: Once every 6 months (OHS: Occupational Health & Safety) • For best performance and to meet published speci cations: once every six months NOTE: A calibration label should be applied after every calibration to con rm work performed and the date it was con rmed.

  • Page 41: Calibrating The Internal Sensor(S)

    Rev. B | 2018.08 LPT-P- Operation Manual NOTE: The programming buttons inside the enclosure can be used instead of the magnetic wand, if preferred. 7.2 Calibrating the Internal CO and/or NO Sensor(s) NOTE: If an inappropriate concentration of span gas is applied during calibration, calibration may succeed but it does not mean the equipment has been calibrated properly.
  • Page 42 LPT-P - Operation Manual Rev. B | 2018.08 When the process has nished and the Zero calibration was accepted, press ENTER to Exit and remove the cylinder of zero gas. Refer to Section 7.3.3 Zero - Requires Override if the Zero calibration was not successful.

  • Page 43: Troubleshooting Calibration

    Rev. B | 2018.08 LPT-P- Operation Manual When the correct value is displayed, attach the regulator to the span gas cylinder and ow the span gas over the sensor. Once gas is detected, display will show a countdown from 180 seconds (3 minutes).

  • Page 44: Calibration Adapter Plug

    If all that is desired is to do a zero calibration shift, complete Step 1 in Section 7.2 Calibrating the Internal Sensor(s). A zero shift calibration is only done when the LPT-P is being installed for the rst time. The reason for a zero shift calibration is to compensate for the new environment in which the LPT-P is being installed.

  • Page 45: Fault Reading

    In either case all that can be done is to attempt a complete calibration from the beginning (Step 1) and determine if this corrects the fault. If a calibration does not resolve the fault then the LPT-P may need a new sensor. If that does not correct the fault, please contact our service department at service@cetci.com.

  • Page 46: Calibrating An Esh-A Remote Sensor Connected To An Lpt-P

    LPT-P transmitter that the ESH-A is connected to. Make sure both the LPT-P and the ESH-A Remote Sensor are powered up and have warmed up for a 24 hour period prior to calibration. On the LPT-P, in the Sensor Con guration Menu (passcode 3032), press either ARROW key to scroll through the menu and select the channel assigned to the ESH-A.

  • Page 47: Accessories

    ESH-A board), adjust the voltage to read 0.40 VDC. Verify that the voltage output from digital multi-meter leads attached to test points TP1 and TP2 on the LPT-P is reading 0.0 VDC. (a Zero and Span Calibration of the LPT-P will be required if this is not the case).

  • Page 48: Magnetic Wand

    8.2 Magnetic Wand (p/n: CET-MW) The magnetic wand is used for accessing menu options and program functions without opening the enclosure. Use to engage the magnetic switches on the side of the LPT-P. Lifts 226.7 g (½ lb) solid steel Size 66.6 mm x 6.35 mm (2 5/8”...

  • Page 49: Calibration Kit

    Rev. B | 2018.08 LPT-P- Operation Manual Enclosure 16 gauge galvanized steel Weight 800 g (28 oz) Size 178 mm W x 160 mm H x 91 mm D (7.0” W x 6.3” H x 3.6” D) 8.4 Calibration Kit (p/n: CET-715A-CK1) The Calibration Kit contains the items necessary for common eld and shop calibrations.

  • Page 50: Maintenance

    Check the display contrast. Refer to Section 6.5 Set LCD Display Contrast Level. Display shows a channel status FAULT message. The LPT-P is in fault mode. If re-calibrating the sensor fails, replace the sensor. © 2018 All rights reserved. Data subject to change without notice.
  • Page 51 Modbus® output signal has not been connected properly. Check the connections and refer to the Wiring Examples in Section 5.6 Wiring Connections. LPT-P Device cannot be seen by the Controller and/or the BAS / DDC on the Modbus® network. • Check the Baud rate. All devices in the network must have the same Baud rate. Refer to Section 6.7.2 Change Modbus®...
  • Page 52 Critical Environment Technologies Canada Inc. Unit 145, 7391 Vantage Way, Delta, BC, V4G 1M3, Canada Toll Free: +1.877.940.8741 Tel: +1.604.940.8741 Fax: +1.604.940.8745 www.critical-environment.com LPTP20180820-B © 2018 Critical Environment Technologies Canada Inc. All rights reserved. Data in this publication may change without notice.

Table of Contents