MODEL QTS-6100 SERIES ANALOG TRANSMITTER/SENSOR INSTALLATION OPERATION AND MAINTENANCE MANUAL QUATROSENSE ENVIRONMENTAL LTD. 5935 OTTAWA STREET, PO BOX 749 RICHMOND, ONTARIO CANADA K0A 2Z0 PHONE: (613) 838-4005 FAX: (613) 838-4018 www.QEL.dedesco.com B71050-021-000-RB.doc ELECTROCHEMICAL TRANSMITTER JUL. 18 2007 PRODUCT MANUAL GENERAL SPECIFICATIONS DIMENSIONS: Explosion Proof: 5.7”W x 8.2”H x 4.2”D (145mm x 210mm x 110mm) POWER SUPPLY: 24 VDC (12-36 VDC) SIGNAL: 4 - 20 mA Linear (maximum over scale: 25 mA) Zero = 4.00 mA ± 0.1 mA WIRING: 2 - Wire 14 - 24 AWG SENSOR TYPE: Electrochemical HUMIDITY: Continuous: 15% - 90% RH Non-Condensing Intermittent: 0-099% RH Non-Condensing Standard Recommended Model Gas Gas Measurement Alarm Settings Operating Recommended Number Code Type Range Warning Alarm Temperature Mtng. Height* QTS-61110x- 110 H 2 S 0-25 ppm 5 ppm 10 ppm -40° C to + 50° C Low QTS-61115x- 115 HCN 0-20 ppm 10 ppm 15 ppm -20° C to + 50° C Mid QTS-61120x- 120 Cl 2 0-3 ppm 0.5 ppm 2 ppm -20° C to + 50° C Low QTS-61123x- 123 ClO 2 0-1 ppm 0.1 ppm 0.3 ppm -20° C to + 50° C Low QTS-61125x- 125 HCL 0-10 ppm 5 ppm 7 ppm -20°C to + 50° C Mid QTS-61140x- 140 SO 2 0-6 ppm 2 ppm 5 ppm -20°C to + 50° C Low QTS-61150x- 150 NO 2 0-6 ppm 1 ppm 3 ppm -20°C to + 50° C Low QTS-61160x- 160 CO 0-250 ppm 10 ppm 100 ppm -20°C to + 50° C Mid QTS-61190x- 190 NO 0-100 ppm 25 ppm 50 ppm -20°C to + 50° C Mid QTS-61211x- 211 H 2 0-2000 ppm 500 ppm 1000 ppm -20°C to + 50° C High QTS-61220x- 220 NH 3 0-50 ppm 25 ppm 35 ppm -25°C to + 30° C High QTS-61230x- 230 C 2 H 4 O 0-20 ppm 2 ppm 5 ppm -20°C to + 50° C Low QTS-61240x- 240 O 3 0-3 ppm 0.5 ppm 2 ppm -20°C to + 50° C Mid *Low = 9” to 18” (.23 to .45 m) above floor * Mid = 4ft to 6ft (1.2 to 1.8 m) above floor * High = 9” to 18” (.23 to .45 m) below ceiling QTS-6000 Series Analog Transmitter/Sensor B71050-021-000-RB.doc ELECTROCHEMICAL TRANSMITTER JUL. 18, 2007 PRODUCT MANUAL i WARRANTY STATEMENT The information contained in this manual is based upon data considered accurate; however, no warranty is expressed or implied regarding the accuracy of this data. All QEL equipment is warranted against defects in material and workmanship for a period of two years from date of shipment with the following exceptions: Electrochemical Sensors (Toxic) Six Months Catalytic Sensors (Combustible) One Year During the warranty period we will repair or replace, at our discretion, any components or complete units that prove, in our opinion, to be defective. We are not liable for consequential or incidental damage to auxiliary interfaced equipment. A returned material authorization number should be obtained from the factory prior to returning any goods. All return shipments must be shipped freight prepaid and a copy of the maintenance records should accompany the unit concerned. Warranty should be considered F.O.B. the factory. Labour and travel time are chargeable for any field site visits required for warranty work. LIMITED LIABILITY All QEL systems shall be installed by a qualified technician/electrician and maintained in strict accordance with data provided for individual systems in the form of installation/maintenance manuals. QEL assumes no responsibility for improper installation, maintenance, etc., and stresses the importance of reading all manuals. QEL shall not be responsible for any liability arising from auxiliary interfaced equipment nor any damage resulting from the installation or operation of this equipment. QEL’s total liability is contained as above with no other liability expressed or implied, as the purchaser is entirely responsible for installation and maintenance of systems. This warranty is in lieu of all other warranties, expressed or implied, and no representative or person is authorized to represent or assume for QEL any liability in connection with the sales of our products other than that set forth herein. NOTE: Due to on-going product development, QEL reserves the right to change specifications without notice and will assume no responsibility for any costs as a result of modifications. For further information or assistance, contact: QUATROSENSE ENVIRONMENTAL LTD. 5935 Ottawa Street, PO Box 749 Richmond, Ontario K0A 2Z0 Tel: (613) 838-4005 Fax: (613) 838-4018 QTS-6000 Series Analog Transmitter/Sensor B71050-021-000-RB.doc ELECTROCHEMICAL TRANSMITTER JUL. 18, 2007 PRODUCT MANUAL ii TABLE OF CONTENTS 1. INTRODUCTION.....................................................................................................................1 2. BASIC DESCRIPTION............................................................................................................2 3. SPECIFICATIONS AND ORDERING INFORMATION.........................................................3 3.1 M ODEL N UMBER O RDERING C ODE .....................................................................................3 3.2 S ENSOR /T RANSMITTER S PECIFICATIONS ..............................................................................3 4. THEORY OF OPERATION.....................................................................................................4 4.1 E LECTROCHEMICAL S ENSOR E LEMENTS ..............................................................................4 4.2 T WO W IRE T RANSMITTERS .................................................................................................5 4.3 I NTRINSIC S AFETY VS E XPLOSION P ROOF E NCLOSURES FOR H AZARDOUS L OCATIONS ..........5 5. INSTALLATION......................................................................................................................7 5.1 M OUNTING .........................................................................................................................7 5.2 W IRING ..............................................................................................................................8 6. CONFIGURATION..................................................................................................................9 7. START-UP AND COMMISSIONING....................................................................................11 8. ROUTINE MAINTENANCE..................................................................................................11 8.1 C ALIBRATION ...................................................................................................................11 8.1.1 E QUIPMENT R EQUIRED .............................................................................................11 8.1.2 P ROCEDURE .............................................................................................................12 8.2 S ENSOR E LEMENT R EPLACEMENT .....................................................................................13 8.2.1 I NDUSTRIAL E XPLOSION -P ROOF E NCLOSURES ..........................................................14 8.2.2 ABS P LASTIC C OMMERCIAL AND NEMA 4X E NCLOSURES ......................................14 9. FIELD TROUBLE SHOOTING.............................................................................................15 9.1 S ENSOR L IFE ....................................................................................................................15 9.2 T RANSMITTER E LECTRONICS ............................................................................................15 9.3 I NSTALLATION AND A PPLICATION P ROBLEMS ....................................................................16 9.3.1 S UPPLY AND S IGNAL R EVERSED ...............................................................................16 9.3.2 O VERVOLTAGE S UPPLY ...........................................................................................17 9.3.3 E XCESSIVE B URDEN R ESISTANCE OR U NDERSUPPLY V OLTAGE .................................17 9.3.4 H UMIDITY P ROBLEMS ..............................................................................................17 9.3.5 RFI/EMI E FFECTS ...................................................................................................18 QTS-6000 Series Analog Transmitter/Sensor B71050-021-000-RB.doc ELECTROCHEMICAL TRANSMITTER JUL. 18, 2007 PRODUCT MANUAL iii LIST OF FIGURES F IGURE 1 - T OXIC C ELL C ONSTRUCTION (S CHEMATIC D RAWING ) .............................................................................4 F IGURE 2 -T WO W IRE T RANSMITTERS ............................................................................................................5 F IGURE 3 - I NTRINSICALLY S AFE I NSTALLATION .............................................................................................6 F IGURE 4 - M AXIMUM B URDEN R ESISTANCE ..................................................................................................8 F IGURE 5 - J UMPER S TYLE .............................................................................................................................9 F IGURE 6 - C ONFIGURATION J UMPERS - R IGHT S IDE L OCATIONS ...................................................................10 F IGURE 7 - C ONFIGURATION J UMPERS - L EFT S IDE L OCATIONS .....................................................................10 F IGURE 8 - C ALIBRATION A DJUSTMENTS ......................................................................................................12 F IGURE 9 - S ENSOR E LEMENT I NSTALLATION ...............................................................................................14 F IGURE 10 - S ENSOR E LEMENT I NSTALLATION .............................................................................................14 F IGURE 11 - C IRCUIT C ARD A SSEMBLY ........................................................................................................16 LIST OF TABLES T ABLE 1 - S ENSOR /T RANSMITTER M OUNTING L OCATION T ABLE 2 - S ENSOR T YPE C ONFIGURATION - U PPER C IRCUIT C ARD A SSEMBLY T ABLE 3 - S ENSOR T YPE C ONFIGURATION - L OWER C IRCUIT C ARD A SSEMBLY B71050-021-000-RB.doc ELECHROCHEMICAL TRANSMITTER May 4, 2005 PRODUCT MANUAL 1 1. INTRODUCTION Thank you for purchasing this quality product from Quatrosense Environmental Ltd. (QEL). We want you to enjoy many years of effective use and protection from your QTS-6100 Series Universal Electrochemical Toxic Sensor/Transmitter. This manual is intended to provide you with all of the details you need to properly install, operate, and maintain your equipment. To properly prepare to install, configure, and start-up your QTS-6100 Series Universal Electrochemical Toxic Sensor/Transmitter we recommend that you read those sections of the manual before beginning the work. The sections at the beginning of the manual covering description, specifications, and theory of operation will provide general background and reference information. Please refer to the sections at the end of the manual on maintenance, calibration, and troubleshooting before performing these tasks. Throughout this manual your attention will be drawn to certain information in the following manner: NOTE: This will highlight tasks or information important to the proper operation of the controller *CAUTION* This will detail steps that will cause malfunction of the unit if performed improperly *WARNING* This will indicate critical actions that could cause harm to personnel or damage to the controller or associated equipment if performed improperly If you have any questions, or you find any errors or omissions in your manual, please contact our customer service team at (613) 838-4005 by phone or fax us at (613) 838-4018. QTS-6000 Series Analog Transmitter/Sensor B71050-021-000-RB.doc ELECTROCHEMICAL TRANSMITTER JUL. 18, 2007 PRODUCT MANUAL 2 2. BASIC DESCRIPTION The QTS-6100 Series Universal Electrochemical Toxic Sensor/Transmitter is a significant upgrade from our previous electrochemical sensor/transmitters. It features improved performance and the ability to configure the transmitter for any of long list of electrochemical sensor elements offered by QEL. The transmitters operate over a wide tolerance of DC power and provide a 4 to 20 mA DC output in a two-wire connection. The sensor portion of these units is a City Technology compact electrochemical sensor element, selected specifically for the gas to be measured. These elements are completely sealed and are a non-consuming technology. This means that the electrolyte solution is not consumed by the normal operation of the sensor. Typical life for these sensors is two to three years in normal operation, with recalibration recommended every three months. See Section 4 - “Theory of Operation” for details on how these sensors function. The transmitter portion of these units uses solid state components on two circuit card assemblies to measure the DC micro amp signal from the sensor element and convert it to a 4 to 20 mA DC output. The transmitter electronics can be field configured via solderless shorting links to accept any one of the range of electrochemical sensors offered. Across this range there are differing requirements for battery voltage, gain resistance, a shorting FET, and the polarity of the sensor output. See Section 6 - “Configuration” for details on configuring the transmitter. The transmitter electronics are powered with two-wire 24 VDC and transmit the 4 to 20 mA DC output over the same two wires. They have been designed to provide protection from interference caused by Radio Frequency (RFI) and Electro-Magnetic (EMI) sources. The designs have been tested for proper operation under radiated interference of 4 watts at a distance of 1 meter. See Section 5 - “Installation” for details on proper wiring and grounding to ensure proper operation. Accessible from the top of the transmitter are test jacks that will accept standard digital multimeter test leads. The transmitter 4 to 20 mA DC signal can be monitored from these test points without interrupting the output signal. Two trim potentiometers provide adjustment of zero and span for accurate calibration of the transmitter to specific gas concentrations. No linearization adjustments are required as electrochemical cells are inherently linear. The sensor/transmitter assemblies are offered in a variety of enclosures. These range from general purpose NEMA 1 enclosures through to explosion-proof enclosures listed by CSA, UL, and FM for Class 1, Division 1, Groups B, C, D service. The same transmitter board assembly is used for all enclosure types. The plug- in sensor element connects directly to the transmitter circuit card assembly in the ABS plastic NEMA 1 and NEMA 4 enclosures. An aluminum or stainless steel sealed sensor assembly is provided for the plug-in sensor element on the explosion-proof enclosures. The sensor connects to the circuit card assembly via a connector at the end of leads extending from the sensor assembly. QTS-6000 Series Analog Transmitter/Sensor B71050-021-000-RB.doc ELECTROCHEMICAL TRANSMITTER JUL. 18, 2007 PRODUCT MANUAL 3 3. SPECIFICATIONS AND ORDERING INFORMATION 3.1 Model Number Ordering Code QTS - 6 x - 0 0 0 Transmitter Type Non-Indicating Analog Output 1 Gas Type See Sensor Selection Table X X X Revision Factory Provided X Enclosure Industrial: NEMA 4X,7,9 c/w alum. sensor housing E (Note 1) Industrial: NEMA 4X,7,9 c/w SS sensor housing S (Note 1) Commercial: NEMA 1 C Commercial: NEMA 4X c/w Splash Guard N Commercial: NEMA 1 Duct Mount D Options (Enter 0 for no Selection) Splash Guard G Low Temperature (-40°C) Heater Option (Note 2) L Non-Standard Calibration X Special (Consult Factory) S Note 1: Chlorine sensor assembly not explosion-proof listed Note 2: Available only in type N or C enclosures 3.2 Sensor/Transmitter Specifications Input Power: 12 to 36 VDC Temperature - Sensor: See Sensor Selection Table Fuse: 0.5 Amp socketed pico fuse Temp. - Transmitter: -40° to +50°C (-40° to +122°F) Output Signal: 4 to 20 mA DC into 750 ohms Humidity - Sensor: 15 to 90% RH continuous at 24 VDC, Two-wire configuration operating, non-condensing. RFI/EMI Protection: 4.0 Watt at 1 meter radiated Humidity - Transmitter: 0 to 99% RH, non-condensing, Enclosure Rating: E - NEMA Type 4X Weatherproof, operating and storage Type 7 and 9 Explosion Proof; IP66-68, Pressure: Atmospheric ± 10% Class 1, Div. 1, Groups A, B, C, D Accuracy: ± 2.5% of Reading CSA, FM, UL listed; Aluminum Repeatability: ± 1.0% Sensor Housing (also Group A rated) Approvals: CSA S - Same as E above except with FM 316 Stainless Steel Sensor Housing EE x d II C; C, D - NEMA Type 1 General Purpose IP68 N - NEMA Type 4X Weatherproof ATEX 0207 U Encl. Materials: E, S - Cast Aluminum, Epoxy Painted C, N, D - ABS Plastic Sensor Technology: Electrochemical, non-consuming Response Time: Typical less than 60 seconds for 90% response to a step change Sensor Life: Typical 2 to 3 years Sensor Gas Types: Field configurable for any sensor from Sensor Selection S ENSOR S ELECTION AND S PECIFICATION T ABLE G AS S YM M ODEL C ODE S TANDARD C AL ( PPM ) T EMP R ANGE ºC (N OTE 3) Transmitter Only --- 000 None --- Hydrogen Sulphide H 2 S 110 0 to 25 -40 to +50 Hydrogen Cyanide HCN 115 0 to 20 -20 to +50 Chlorine Cl 2 120 0 to 3 -20 to +50 Chlorine Dioxide ClO 2 123 0 to 1 -20 to +50 Hydrogen Chloride HCl 125 0 to 10 -20 to +50 Sulphur Dioxide SO 2 140 0 to 6 -20 to +50 Nitrogen Dioxide NO 2 150 0 to 6 -20 to +50 Carbon Monoxide CO 160 0 to 250 -20 to +50 Nitric Oxide NO 190 0 to 100 -20 to +50 Hydrogen H 2 211 0 to 2000 -20 to +50 Ammonia NH 3 220 0 to 50 -25 to +30 Ethylene Oxide C 2 H 4 O 230 0 to 20 -20 to +50 Ozone O 3 240 0 to 0.5 -20 to +50 Note 3: - 40°C = -40° F +30°C = + 86° F - 25°C = -13° F +50°C = + 122° F - 20°C = - 4° F QTS-6000 Series Analog Transmitter/Sensor B71050-021-000-RB.doc ELECTROCHEMICAL TRANSMITTER JUL. 18, 2007 PRODUCT MANUAL 4 4. THEORY OF OPERATION 4.1 Electrochemical Sensor Elements The sensor portion of the QTS-6100 is a compact City Technology electrochemical sensor. These sensors are micro-fuel cells that are completely sealed so as to be maintenance free and stable for long periods. The measurement is a gas-in-liquid chemical reaction rather than a surface area measurement. With no surface area to coat, these sensors retain their sensitivity to gases such as H 2 S even after prolonged exposure to clean air. The cell consists of a diffusion barrier, O-ring seal, electrolyte reservoir and three electrodes; Sensing, Counter, and Reference (see Fig. 1). The target gas enters the cell through a diffusion barrier. The chemical process of the measurement is one of oxidation where one molecule of the target gas is exchanged for one molecule of oxygen. The reaction drives the oxygen molecule to the Counter electrode, generating a DC microamp signal between the Sensing and Counter electrodes. This signal is linear to the volume concentration of the sensed gas rather than the partial pressure. These sensors will not respond to normal variations in atmospheric pressure. In some cases, biasing is required to maintain a voltage differential between the Reference and Sensing electrodes in order to facilitate the necessary reaction in the cell. The transmitter electronics will provide the necessary bias voltage when configured for one of these sensor types. Most sensors produce a small amount of “baseline” current in clean air. This is adjusted out with the zero potentiometer on the transmitter. This oxidation at the electrodes causes wear, and limits the life of the sensor. Typical life for these sensors is two to three years in normal operation. This will vary somewhat from sensor to sensor, with some working lifetimes exceeding four years. This wear also changes the characteristics of the sensor, requiring regular re-calibration. It is recommended that these sensors be re-calibrated every three months or as necessary. *CAUTION* Replacement sensor elements which are not bias types are shipped with a tiny spring of wire shorting the Sense and Reference Electrodes. This spring must be removed prior to installing the element to the sensor assembly. Capillary Diffusion Barrier O-Ring Seal Sensing Electrode Refereence Electtrode Counter Electrode Electrolyte Reservoir Figure 1 - Toxic Cell Construction (Schematic Drawing) Next >