KPM Process Sensors PSC-SSS-Ratio Operator's Manual

Fiber optics ratio thermometer

Hide thumbs

Table Of Contents

Table of Contents

Quick Links

Download this manual

Operator's Manual

PSC-SSS-Ratio

1M / 2M

Fiber Optics Ratio Thermometer

Table of Contents

Need help?

Do you have a question about the Process Sensors PSC-SSS-Ratio and is the answer not in the manual?

Questions and answers

Summary of Contents for KPM Process Sensors PSC-SSS-Ratio

Page 1 Operator's Manual PSC-SSS-Ratio 1M / 2M Fiber Optics Ratio Thermometer...
Page 2: Table Of Contents
Table of Contents Table of Contents Table of Contents .............................2 General Information ..........................6 Description ............................6 Warranty ............................8 Scope of Supply ..........................8 Maintenance ............................9 Safety Note............................9 Cautions ............................9 Factory Default Settings ......................... 10 Technical Data............................12 General Specifications ........................12 Electrical Specifications........................
Page 3 Measurement Specifications [2M models] ..................15 Optics ............................. 16 Mechanical Installation..........................19 Accessories ............................ 24 Laser Sighting ..........................28 Electrical Installation ..........................29 Cable Connections ......................... 29 Ground Connection ........................32 Outputs and Inputs ..........................33 Analog Output ..........................33 I/O pins ............................34 Programming Interface........................
Page 4 Table of Contents Operating ..............................38 Sensor Setup..........................38 Software PSCConnect ..........................42 Installation ............................42 Communication Settings ........................ 44 7.2.1 Serial Interface ........................... 44 7.2.2 Protocol ............................44 Basics of Infrared Thermometry......................45 The Ratio Principle ......................... 46 Emissivity ..............................48 Definition............................48 Determination of unknown Emissivity ....................48 Characteristic Emissivity ........................49...
Page 5 Characteristic Slope Values ......................50 Determination of unknown Slope values...................50 Attenuation ............................50 Appendix A – Emissivity Table Metals ......................52 Appendix B – Emissivity Table Non Metals ....................54 Appendix C – Smart Averaging ........................55...
Page 6: General Information
General Information 1 General Information 1.1 Description Thank you for choosing the PSC-SSS-RATIO infrared thermometer. The sensors of the PSC-SSS-Ratio series are non-contact infrared temperature sensors. They calculate the surface temperature based on the emitted infrared energy of objects. The sensor can work in the 1-color-mode as well as in the ratio- or 2-color-mode [►8 Basics of Infrared Thermometry].
Page 7 The PSC-SSS-Ratio sensing head is a sensitive optical system. Please only use the thread for mechanical installation. • Avoid abrupt changes of the ambient temperature. • Avoid mechanical violence on the head – this may destroy the system (expiry of warranty). •...
Page 8: Warranty
General Information 1.2 Warranty Every single product goes through a quality check. However, if failure does occur, please contact customer service immediately. The warranty period covers 1 year starting on the delivery date. Warranty does not apply to damages which result from misuse or neglect. The warranty also expires if you open up the product. The manufacturer is not liable for consequential damage or in the case of a non-intended use of the product.
Page 9: Maintenance
1.4 Maintenance Lens cleaning: Blow off loose particles using clean compressed air. The lens surface can be cleaned with a soft, humid tissue (moistened with water) or a lens cleaner (e.g. Purosol or B+W Lens Cleaner). Never use cleaning compounds which contain solvents (neither for the lens nor for the housing). 1.5 Safety Note The sensor is equipped with an integrated laser that serves to align the optics with the target.
Page 10: Factory Default Settings
General Information 1.7 Factory Default Settings The unit has the following presets at time of delivery: Output 1 Analog: TProc/ max. temperature range (according to model) = 4-20 mA Output 2 Analog: Attenuation/ 0-100 % = 0-20 mA Emissivity 1,000 Slope 1,000 Averaging (AVG)
Page 11 Smart Averaging means a dynamic average adaptation at high signal edges [activation via software only]. ►Appendix C – Smart Averaging...
Page 12: Technical Data
Technical Data 2 Technical Data 2.1 General Specifications Sensing head Electronic box Environmental rating IP65 (NEMA-4) 0...50 °C (2M) / 0…60 °C (1M) Ambient Temperature -20...200 °C (optional to 315 °C) Storage temperature -40...200 °C -40...85 °C Relative humidity 10...95%, non condensing Material stainless steel die casting zinc...
Page 13: Electrical Specifications
2.2 Electrical Specifications Power Supply 8–30 VDC Power max. 5 W Aiming laser 520 nm, <1 mW, On/ Off via programming keys or software Outputs/ analog 2x 0/ 4–20 mA (12 bit) / optional: 2x 0/ 4–20 mA (16 bit) isolated Digital I/O pins 3 programmable in-/ outputs, usable as: •...
Page 14: Measurement Specifications [1M Models]
Technical Data 2.3 Measurement Specifications [1M models] 1MH1 1 color: 900…3000 °C Temperature range (scalable) 1 color: 450...1400 °C 1 color: 650...2000 °C 2 color: 1000…3000 °C 2 color: 525...1400 °C 2 color: 700...2000 °C Spectral range 0.8 - 1.1 µm Optical resolution 38:1 100:1...
Page 15: Measurement Specifications [2M Models]
2.4 Measurement Specifications [2M models] 2MH1 1 color: 500…3000 °C Temperature range (scalable) 1 color: 250...1000 °C 1 color: 375...1500 °C 2 color: 550…3000 °C 2 color: 275...1000 °C 2 color: 400...1500 °C Spectral range 1,45 - 1,75 µm Optical resolution 38:1 50:1 100:1...
Page 16: Optics
Technical Data 2.5 Optics The various optics of the PSC-SSS-Ratio enables smooth focusing to the desired distance. Optics Focus adjustable in the range 300 mm till infinity 150 to 350 mm The following tables show the diameter of the measuring spot for some selected distances. The spot size refers to 90 % of the radiation energy.
Page 17 1ML / 2ML: SF optics (D:S=38:1) Spot size 13.2 19.7 26.3 39.5 52.6 65.8 131.6 Measurement distance 1000 1500 2000 2500 5000 2MH: SF optics (D:S=50:1) Spot size Measurement distance 1000 1500 2000 2500 5000 1MH / 1MH1 / 2MH1: SF optics (D:S=100:1) Spot size Measurement distance 1000...
Page 18 Technical Data Sensor placement [1C mode] The size of the measuring object and the optical resolution of the infrared thermometer determine the maximum distance between sensing head and measuring object. In order to prevent measuring errors the object should fill out the field of view of the optics completely. Consequently, the spot should at all times have at least the same size of the object or should be smaller than that.
Page 19: Mechanical Installation
3 Mechanical Installation The PSC-SSS-Ratio sensing heads are equipped with a metrical M18x1-thread and can be installed either directly via the sensor thread or with help of the hex nuts (1 piece included in scope of supply) to the mounting bracket available. Various mounting brackets, which can make the adjustment of the sensing head easier, can be ordered additionally as accessories.
Page 20 Mechanical Installation • Please make sure that the minimum bending radius of the fiber optics of 29 mm for 1MH/ 1MH1/2MH1, 54 mm for 2MH and 80 mm for 1ML/2ML will be considered during installation. • If the fiber or measuring head is defective, the device must be sent in. A recalibration is necessary.
Page 21 Electronic box The electronic box is also available with closed cover (display and programming keys with no access from outside) [PSC-ACCTCOV].
Page 22 Mechanical Installation Fiber connection at sensor head and electronic box When mechanically connecting the fiber to the sensor head and the electronics box, the correct steps must be followed. Both connections are labeled with the corresponding side ("Head" and “Box"). Fiber connection sensor head "Head"...
Page 23 Focusing the sensor head The PSC-SSS-ratio pyrometer is equipped with a various optics. Through these, you can focus the device from a distance of 300 mm to infinity. To focus the sensor, loosen the knurled screw (1) on the head. Now you can focus the device on the head (2).
Page 24: Accessories
Mechanical Installation 3.1 Accessories Mounting bracket, adjustable in one axis Air purge collar [PSC-ACCTAPMH] [PSC-ACCTFBMH] The lens must be kept clean at all times from dust, smoke, fumes and other contaminants in order to avoid reading errors (in the 1-color-mode). These effects can be reduced by using an air purge collar. Make sure to use oil-free, technically clean air, only.
Page 25 Rail Mount Adapter for Electronic box With a rail mount adapter, PSC-SSS-ratio electronics can easily be mounted on a DIN rail (TS35) according EN50022. [PSC-ACCTRAIL]...
Page 26 Mechanical Installation Spare fibers For a fast field exchange, a max. two spare fibers optic cables of the same length, including optical sensing head, can be ordered together with the main unit. These cables will be adjusted together with the unit, making a subsequent order of spare fiber optics not possible.
Page 27 To enter the code please press the Down key (keep pressed) and then the Mode key. The display shows OPTIC SET. Using the Up and Down buttons, the number can be changed. To switch to the the spare fiber in the PSCConnect software, go to the Setup menu and to the Advanced Settings tab.
Page 28: Laser Sighting
Mechanical Installation 3.2 Laser Sighting The integrated laser sighting supports the alignment and focusing of the optics. The size of the laser dot is equal to the real measurement spot size at any distance. The laser can be activated / deactivated via the programming keys on the unit or via the software.
Page 29: Electrical Installation
4 Electrical Installation 4.1 Cable Connections The supplied USB cable can be connected to the side of the electronics box. The device can be operated directly via the PSCConnect software. For electrical installation of further interfaces and when using the in- /outputs, first open the cover of the electronic box (4 screws).
Page 30 Electrical Installation Never connect a supply voltage to the analog outputs as this will destroy the output! The PSC-SSS-Ratio is not a 2-wire sensor! The USB socket built into the side is only intended for setting up the sensor and any subsequent changes to the settings.
Page 31 Place the pressing screw, the rubber washer, and the metal washers of the cable gland one after the other onto the prepared cable end. Spread the strands and fix the shield between two of the metal washers. Insert the cable into the cable gland until the limit stop. Screw the cap tight. Every single wire may be connected to the screw clamps according to their colors.
Page 32: Ground Connection
Electrical Installation 4.2 Ground Connection On the left side of the mainboard PCB you will find a black switch. This connects to the factory-default ground connections (GND power supply / outputs) with the ground of the electronics housing. To avoid ground loops and related signal interferences in industrial environments, it might be necessary to interrupt this connection.
Page 33: Outputs And Inputs
5 Outputs and Inputs The PSC-SSS-Ratio has two analog output and three digital I/O pins (programmable as input or output). 5.1 Analog Output The selection of the signal on output channel 1 and 2 (0/4-20 mA) can be done via the software PSCConnect [►7 Software PSCConnect] Never connect a supply voltage to the analog outputs as this will destroy the output.
Page 34: I/O Pins
Outputs and Inputs 5.2 I/O pins The sensor has three digital pins which can be programmed as outputs (digital) or as inputs (digital or analog) using the PSCConnect software. The following functions are available: Function I/O pin acts as Description Alarm output digital Open collector output/ definition as High- or Low alarm via normally...
Page 35: Programming Interface
5.3 Programming Interface The PSC-SSS-Ratio has, on the side of the electronic box, a USB interface for programming and running the sensor. The USB cable is included in the scope of supply. This interface is not recommended permanent use. The device can be optionally equipped with an USB, RS232, RS485, Modbus RTU, or Ethernet interface, which mounted...
Page 36: Relay Outputs
Outputs and Inputs 5.4 Relay Outputs The PSC-SSS-Ratio can be also be equipped with a relay output. The relay board will be installed the same way as the programming interface. The relay board provides two fully isolated switches, which have the capability to switch max.
Page 37: Alarms
5.5 Alarms The PSC-SSS-Ratio has the following All alarms have a fixed hysteresis of 2 K. Alarm features: Visual Alarms These alarms will change the color of the LCD display. Digital Alarm 1, 2, 3 All the I/O pins can be programmed as alarm output. In this case the pin acts as an open collector output (24 V/ 1 A).
Page 38: Operating
Operating 6 Operating After powering up, the sensor starts an initializing routine for a few seconds. During this time, the display will show INIT. After this procedure, the process temperature is shown in the display. The display backlight color changes according to the alarm settings [►5.5 Alarms]. 6.1 Sensor Setup The programming keys Mode Up...
Page 39 Display Mode [Sample] Adjustment Range S OFF Laser Sighting ON/ OFF T RAT 878.9 Ratio temperature after signal processing) [878,9 °C] fixed T1 897,1 1 channel temperature [879,1 °C] fixed T2 879,0 2 channel temperature [879,0 °C] fixed ATT 0.0 Attenuation[0,0 %] fixed T DET 50.1...
Page 40 Operating Activating (ON) and Deactivating (OFF) the Sighting Laser. By pressing Up or Down S OFF the laser can be switched on and off. The Slope is the quotient of the emissivity’s of both of the overlapping wavelengths and SLOPE therewith the deciding parameter for measurements in 2-color-mode.
Page 41 has fallen below the Threshold value beforehand. If Hysteresis is activated a peak in addition must decrease by the value of the hysteresis before the algorithm takes it as a new peak value. AVALL (Advanced Valley Hold): This mode is the inverted function of Advanced Peak hold.
Page 42: Software Pscconnect
Software PSCConnect 7 Software PSCConnect 7.1 Installation The software is located on the included USB stick. Minimum system requirements: Please start Setup.exe and follow the instructions of ▪ Windows 7, 8, 10 the wizard until the installation is finished. ▪ USB interface ▪...
Page 43 Main Features: ▪ Graphic display for temperature trends and automatic data logging analysis documentation ▪ Complete sensor setup and remote controlling ▪ Adjustment of signal processing functions ▪ Programming of outputs and functional inputs...
Page 44: Communication Settings
Software PSCConnect 7.2 Communication Settings 7.2.1 Serial Interface Baudrate: 115.2 / 921.6 Data bits: kBaud 8 Parity: none Stop bits: Flow control: 7.2.2 Protocol All sensors of the PSC-SSS-Ratio series use a binary protocol.
Page 45: Basics Of Infrared Thermometry
8 Basics of Infrared Thermometry Depending on the temperature, each object emits a certain amount of infrared radiation. A change in the temperature of the object is accompanied by a change in the intensity of the radiation. For the measurement of “thermal radiation” infrared thermometry uses a wave-length ranging between 1 µm and 20 µm.
Page 46: The Ratio Principle
Basics of Infrared Thermometry 8.1 The Ratio Principle The 2-color ratio technology makes possible accurate and repeatable temperature measurements that are free from dependence on absolute radiated energy values. In use, a 2-color sensor determines temperature from the ratio of the radiated energies in two separate wavelength bands (colors). The benefits of 2-color sensors are that accurate measurements can be made under the following conditions: ►...
Page 47 1-color sensors read polluted atmosphere and dirty windows and lenses as a reduction in energy and give much lower than actual temperature readings. Targets Smaller Than Field of View When a target is not large enough to fill the field of view, or if the target is moving within the field of view, radiated energies are equally reduced, but the ratio of the energies is unaffected and measured temperatures remain accurate.
Page 48: Emissivity
Emissivity 9 Emissivity 9.1 Definition The intensity of infrared radiation, which is emitted by each body, depends on the temperature as well as on the radiation features of the surface material of the measuring object. The emissivity (ε – Epsilon) is used as a material constant factor to describe the ability of the body to emit infrared energy.
Page 49: Characteristic Emissivity
and take the temperature of the sticker. Afterwards, determine the temperature of the adjacent area on the measuring object and adjust the emissivity according to the value of the temperature of the sticker. ► Cove a part of the surface of the measuring object with a black, flat paint with an emissivity of 0.98. Adjust the emissivity of your infrared thermometer to 0.98 and take the temperature of the colored surface.
Page 50: Characteristic Slope Values
Emissivity 9.4 Characteristic Slope Values The slope is the quotient of the emissivity of both of the overlapping wavelength bands. The factory default value for the slope is 1.000. The following slopes are typical reference values. The real slope can vary depending on the metal alloy and surface finish.
Page 51 This figure showing typical temperature reading PSC-SSS-Ratio both color and the 2-color-mode in addition of increasing contamination of the optical transmission path in-between the target and the ratio thermometer. Due to the ratio principle, the 2 channel signal (upper curve) stays very stable over a wide range of attenuation up to over 90 %. The signal of the 1 channel mode (lower curve), acting like a standard pyrometer with one measuring wavelength only, is decreasing rapidly with the contamination of the transmission path.
Page 52: Appendix A - Emissivity Table Metals
Appendix A – Emissivity Table Metals Appendix A – Emissivity Table Metals Material typical Emissivity Spectral response 1.0 µm 1.6 µm 5.1 µm 8-14 µm Aluminium non oxidized 0,1-0,2 0,02-0,2 0,02-0,2 0,02-0,1 polished 0,1-0,2 0,02-0,1 0,02-0,1 0,02-0,1 roughened 0,2-0,8 0,2-0,6 0,1-0,4 0,1-0,3 oxidized...
Page 53 Material typical Emissivity Spectral response 1.0 µm 1.6 µm 5.1 µm 8-14 µm Lead polished 0,35 0,05-0,2 0,05-0,2 0,05-0,1 roughened 0,65 oxidized 0,3-0,7 0,2-0,7 0,2-0,6 Magnesium 0,3-0,8 0,05-0,3 0,03-0,15 0,02-0,1 Mercury 0,05-0,15 0,05-0,15 0,05-0,15 Molybdenum non oxidized 0,25-0,35 0,1-0,3 0,1-0,15 oxidized 0,5-0,9 0,4-0,9...
Page 54: Appendix B - Emissivity Table Non Metals
Appendix B – Emissivity Table Non Metals Appendix B – Emissivity Table Non Metals Material typical Emissivity Spectral response 1.0 µm 2.2 µm 5.1 µm 8-14 µm Asbestos 0,95 Asphalt 0,95 0,95 Basalt Carbon non oxidized 0,8-0,9 0,8-0,9 0,8-0,9 graphite 0,8-0,9 0,7-0,9 0,7-0,8...
Page 55: Appendix C - Smart Averaging
Appendix C – Smart Averaging The average function is generally used to smoothen the output signal. With the adjustable parameter time, this function can be optimally adjusted to the respective application. One disadvantage of the average function is that fast temperature peaks, caused by dynamic events, are subjected to the same averaging time. Therefore, those peaks can only be seen with a delay on the signal output.