BW Technologies GasPoint Operating Manual
GasPoint
Gas Transmitter
4-20 mA Fixed Gas Gas Monitor
Installation and Operating Instructions
Limited Warranty & Limitation of Liability
BW Technologies LP (BW) warrants this product to be free from defects in material and workmanship under normal use and service for a
period of two years, beginning on the date of shipment to the buyer. This warranty extends only to the sale of new and unused products to
the original buyer. BW’s warranty obligation is limited, at BW’s option, to refund of the purchase price, repair, or replacement of a defective
product that is returned to a BW authorized service center within the warranty period. In no event shall BW’s liability hereunder exceed the
purchase price actually paid by the buyer for the Product.
This warranty does not include:
a) fuses, disposable batteries or the routine replacement of parts due to the normal wear and tear of the product arising from use;
b) any product which in BW’s opinion, has been misused, altered, neglected or damaged by accident or abnormal conditions of
c) any damage or defects attributable to repair of the product by any person other than an authorized dealer, or the installation of
unapproved parts on the product; or
The obligations set forth in this warranty are conditional on:
a) proper storage, installation, calibration, use, maintenance and compliance with the product manual instructions and any other
applicable recommendations of BW;
b) the buyer promptly notifying BW of any defect and, if required, promptly making the product available for correction. No goods shall be
returned to BW until receipt by the buyer of shipping instructions from BW; and
c) the right of BW to require that the buyer provide proof of purchase such as the original invoice, bill of sale or packing slip to establish
that the product is within the warranty period.
THE BUYER AGREES THAT THIS WARRANTY IS THE BUYER’S SOLE AND EXCLUSIVE REMEDY AND IS IN LIEU OF ALL OTHER
WARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY IMPLIED WARRANTY OF MERCHANTABILITY OR
FITNESS FOR A PARTICULAR PURPOSE. BW SHALL NOT BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL OR
CONSEQUENTIAL DAMAGES OR LOSSES, INCLUDING LOSS OF DATA, WHETHER ARISING FROM BREACH OF WARRANTY OR
BASED ON CONTRACT, TORT OR RELIANCE OR ANY OTHER THEORY.
Since some countries or states do not allow limitation of the term of an implied warranty, or exclusion or limitation of incidental or
consequential damages, the limitations and exclusions of this warranty may not apply to every buyer. If any provision of this warranty is held
invalid or unenforceable by a court of competent jurisdiction, such holding will not affect the validity or enforceability of any other provision.
BW Technologies LP BW America BW Europe
2840 – 2nd Ave. SE 3279 West Pioneer Parkway 5 Canada Close,
Calgary, AB Arlington, TX Banbury, Oxfordshire
Canada T2A 7X9 USA 76013 United Kingdom OX16 2RT
operation, handling or use;
Table of Contents
Title Page
Safety Information – Read First ............................................................................................................ v
Contacting BW Technologies................................................................................................................ v
Introduction............................................................................................................................................ 1
Installation .............................................................................................................................................3
Operation............................................................................................................................................. 13
Calibration ...........................................................................................................................................16
Maintenance........................................................................................................................................ 18
Specifications ...................................................................................................................................... 20
Replacement Parts and Accessories.................................................................................................. 23
Manufacturer’s Notes and Warnings ..................................................................................... v
Sensor Location..................................................................................................................... 3
Mounting the Enclosure......................................................................................................... 4
System Design Specifications ............................................................................................... 5
Cable Installation ................................................................................................................... 5
4-20 mA Loop Installation...................................................................................................... 6
Relay Cable Installation......................................................................................................... 6
Connecting the Controller and Power Supply .......................................................................6
Remote Sensor Separation Kit .............................................................................................. 6
Mounting the Sensor Separation Kit Enclosure..................................................................... 8
Factory Settings..................................................................................................................... 9
Dip Switch Overview.............................................................................................................. 9
Changing the Alarm and Calibration Gas Setpoints.............................................................. 9
Dip Switch Settings.............................................................................................................. 10
Connecting the Controller and Power Supply .....................................................................11
Controller Calibration ........................................................................................................... 11
Changing the Alarm Setpoints............................................................................................. 12
Changing the Calibration Gas Concentration Level ............................................................ 12
Changing the Low Alarm Setpoint....................................................................................... 12
Changing the High Alarm Setpoint ...................................................................................... 12
Gas Alarm Conditions and Advice....................................................................................... 14
Fault Alarm Conditions and Advice .....................................................................................15
Guidelines............................................................................................................................ 16
Remote Calibration ..............................................................................................................16
Calibration Procedure .......................................................................................................... 17
Cleaning a Sensor ............................................................................................................... 18
Clearing a Sensor ................................................................................................................ 18
Troubleshooting ................................................................................................................... 18
Servicing the GasPoint ........................................................................................................ 19
Sensor Assembly Replacement ..........................................................................................19
Other Component Replacement.......................................................................................... 19
Sensor Specifications .......................................................................................................... 20
Relative Sensitivity of Combustible Gases/Vapors .............................................................21
Specifications....................................................................................................................... 22
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Gas Point
User Manual
ii
List of Tables
Table Title Page
1. Ratings and Certification........................................................................................................ 1
2. GasPoint Monitor .................................................................................................................. 2
3. Control Bay ............................................................................................................................ 2
4. Liquid Crystal Display ............................................................................................................ 2
5. Transmitter with Catalytic/IR Combustible Sensor ................................................................ 5
6. Transmitter with Toxic/Oxygen Sensor.................................................................................. 5
7. Distances for Sensor Separation Kit...................................................................................... 6
8. Factory Default Settings; Select Measuring Ranges............................................................. 9
9. Dip Switches ........................................................................................................................ 10
10. Alarms..................................................................................................................................14
11. Fault Conditions................................................................................................................... 15
12. Calibration Diagnostics Protection....................................................................................... 16
13. Troubleshooting Tips ........................................................................................................... 18
14. Sensor Wiring Configuration................................................................................................ 19
15. GasPoint Replacement Parts ..............................................................................................19
16. Operating and Calibration Specifications ............................................................................ 20
17. Catalytic Sensor Relative Sensitivity of Common Combustible Gases/Vapors .................. 21
18. Standard Model IR GasPoint Relative Sensitivity to
Applicable Combustible Gases/Vapors
............................................................................... 21
List of Figures
Figure Title Page
1. GasPoint Monitor ................................................................................................................... 2
2. User Interface ........................................................................................................................2
3. Liquid Crystal Display ............................................................................................................ 2
4. Outline Drawing ..................................................................................................................... 4
5. System Wiring Diagram......................................................................................................... 7
6. Sensor separation Kit Wiring Diagram ..................................................................................8
7. Applying Gas to the Sensor................................................................................................. 16
8. Assembly Drawing............................................................................................................... 19
9. Sensor Wiring Diagram........................................................................................................ 19
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Gas Point
User Manual
iv
Safety Information – Read First
IMPORTANT
Users of the GasPoint (“the transmitter”) require a full understanding of the operating and maintenance instructions. Use the
transmitter only as specified in this manual, otherwise the protection provided by the transmitter may be impaired. Read the
following Warnings and Cautions before using the transmitter.
a Warnings
⇒ Do not paint the sensor assembly or the transmitter.
⇒ Calibrate the transmitter at start-up and BW recommends a calibration check on a regular schedule, once at least
every 90 days. More frequent checks or inspections are encouraged to spot problems such as mud collections on
the sensor head, accidental painting over the sensor head, etc.
⇒ Do not use the transmitter if it is damaged. Before you use the monitor, inspect the case. Look for cracks or
missing metals or plastics. If the transmitter is damaged or something is missing,
immediately.
⇒ Make sure the cover is properly fastened before you operate the transmitter.
⇒ Use only a sensor assembly specifically designed for your GasPoint model. Refer to
Accessories.
⇒ Periodically test the sensor’s response to gas by exposing the monitor to a targeted gas concentration that
exceeds the high alarm setpoint. Manually verify that visual alarms are activated.
⇒ Opening the sensor will invalidate the calibration.
a Cautions
Do not expose the monitor to electrical shock and/or severe continuous mechanical shock.
⇒
⇒ Do not attempt to disassemble, adjust, or service the monitor unless instructions for that procedure are contained in
the manual and/or that part is listed as a
⇒ Do not allow liquids to condense and/or use high power sprays on the instrument.
⇒ The warranty will be voided if customer personnel or third parties damage the monitor during repair attempts. Non-BW
Technologies repair/service attempts void this warranty.
IMPORTANT
replacement part.
contact BW Technologies
Replacement Parts and
The GasPoint is only to be used for the purposes specified in this manual. BW Technologies’ authorized service representatives and
parts must be employed in carrying out repairs to the unit in order to maintain the validity of the warranty. Modification of
components, use of non-BW parts, or use of incomplete or used parts will also invalidate the warranty.
CAUTION: FOR SAFETY REASONS THIS EQUIPMENT MUST BE OPERATED AND SERVICED BY QUALIFIED
PERSONNEL ONLY. READ AND UNDERSTAND INSTRUCTION MANUAL COMPLETELY BEFORE OPERATING OR
SERVICING.
Contacting BW Technologies
To contact BW Technologies, call: Address correspondence to:
USA: 1-888-749-8878 BW Technologies LP
Canada: 1-800-663-4164 2840 – 2 Avenue S.E.
Europe: +44 (0) 1295 700300 Calgary, AB T2A 7X9
Other countries: +1-403-248-9226 CANADA
ISO 9001
Email us at: info@bwtnet.com
Visit BW Technologies’ website at:
www.gasmonitors.com
Manufacturer’s Notes and Warnings
1. Read the Safety Warnings and Cautions at the beginning of this manual.
2. The GasPoint is fully tested and calibrated in the factory. Installation of the GasPoint should be done by qualified personnel
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GasPoint
Introduction
The GasPoint (“the transmitter”) provides continuous monitoring of the atmosphere for hazardous gases in the workplace and is
virtually maintenance-free. Its revolutionary design utilizes advanced microcontrollers and allows for enhanced diagnostics and fault
analysis. Advanced design features make installation and operation simpler than ever, saving you time and money.
The transmitter provides a 4-20 mA output signal which can be connected to any control system (DCS, PLC, etc.). Designed with
non-volatile memory, the transmitter has total memory retention.
The pushbutton, non-intrusive calibration can be easily performed by one person with no tools or magnet keys. Normally, only a
periodic calibration check is needed to assure dependable performance. The backlight automatically activates in low light conditions
and in an alarm condition.
The LCD is an intuitive user interface, indicating the following:
• When a toxic or combustible sensor has “failed” its self-test;
• Gas type monitored and concentration level (%LEL or ppm);
Alarm level (field settable) and the type encountered (low, high, or fault);
•
• When to apply gas during calibration; and
• When a toxic or combustible sensor has “failed” its self-test.
The flexibility of the transmitter’s modular design affords efficient installation. Wiring of the transmitter itself is straightforward. Field
interchangeable plug-in sensor assemblies enable the user to change the gas monitored at any time. The transmitter recognizes the
sensor installed and tests and resets itself to that sensor type.
The poison-resistant sensors have the fastest response times available. The transmitter is capable of responding to a momentary
puff of gas that would otherwise remain undetected. The sensors have a proven history of reliable, long-term performance and are
relatively unaffected by temperature or humidity variations. Gas enters the transmitter’s sensor by convection and diffusion through
a sintered stainless steel or wire-mesh screened opening.
The transmitter’s explosion-proof design allows operation in areas where the combustible gas concentration may exceed the lowerexplosive limit (LEL). Its rugged construction ensures a long life span in almost any environment.
The transmitter incorporates the best of both proven and new technologies that offer versatility in addition to reliable safety
mechanisms.
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Table 1. Ratings and Certification
All gases, except Cl2, ClO2, and HCl
Approved by CSA (Canadian Standards Association) for use in both the USA and Canada
Class I, Div. 1, Groups B, C, D
Class II, Groups E, F, G (Toxic only)
Combustible Performance Standards: ANSI/ISA. ISA—S12.13
CSA: C22.2 No 152
GasPoint Cl2, ClO2, and HCl
Approved by CSA (Canadian Standards Association) for use in both the USA and Canada for ordinary locations
Approved Non-Incendive for installations in Class I, Division 2, Groups B, C, D
Location’s when both input power and relay outputs are connected to non-incendive sources not to exceed
32 Vdc (power input) and 24 Vdc (relay output)
CSA: C22.2 No.213, UL: 1604
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GasPoint
User Manual
a Warning
Opening the sensor
will invalidate the
Figure 1. GasPoint Monitor
Table 2. GasPoint Monitor
Item Description
1 Cable conduit access
2 Explosion-proof enclosure
3 Sensor
4 Calibration pushbutton
Figure 2. User Interface
Table 3. Control Bay
Item Description
1 Edit buttons
2 OK button
3 Faceplate security screw
4 Low light sensor
5 High/Low alarm settings
6 Slip Hinge
Table 4. Liquid Crystal Display
Item Description
1 Numeric reading
2 Units of measure (ppm or %)
3 Alarm level/type
4 Increment/decrement prompt arrows
5 Set value arrow prompts
6 Sensor advice
7 Span advise icon
8 Automatic zero advise icon
9 Apply gas advise icon
Figure 3. Liquid Crystal Display
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GasPoint
Installation
Installation
Sensor Location
Several factors should be considered when selecting locations to install sensors. The following general suggestions should be
considered to assure the detection of the target gas. Select the most suitable location for each sensor.
Air Currents: If there are fans, wind, or other sources of air movement, gases may tend to rise or collect in certain areas of a
facility. The local air currents should be assessed to aid in selecting the sensor location. Outdoor situation considerations, such as
prevailing winds, should also be accounted for. Air convection can often be more important in determining gas concentrated areas
than factors of vapor density.
Vapor Density: When there are no air currents in the area, sensor placement may be affected where the gas (vapor) to be
monitored is lighter or heavier than air. For gases lighter than air, BW suggests placing the sensor approximately 12 in. (30 cm)
above the level of a potential gas release, or close to the ceiling or roof in indoor installation. For gases heavier than air, BW
suggests placing the sensor 12 in. (30 cm) below the release site, or near the floor or ground. Gases with a density equal to air or
slightly greater than air tend to rise (particularly when air currents are present).
Gas Emission Sources: As a rule, at least one sensor should be located in close proximity to each point where a leak is likely to
occur. This is particularly important when a liquid with a low volatility is being monitored.
Environmental Factors: Designed for rugged outdoor use, consider the following in selecting a location.
• Install sensors where they are protected from wind, dust, snow, water, vibration, and/or shock.
• Observe the operating temperature range of the sensor. Refer to
Sensor Specifications.
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