MI Miniature Infrared Sensor Operating Instructions Noncontact Temperature Measurement Rev.
Declaration of Conformity for the European Community This instrument conforms to: EMC: IEC/EN 61326‐1 Safety: EN 61010‐1:1993 / A2:1995
Contacts Europe Raytek GmbH Berlin, Germany Tel: +49 30 478008 – 0 +49 30 478008 – 400 (Ventes) Fax: +49 30 4710251 raytek@raytek.de USA Raytek Corporation Santa Cruz, CA USA Tel: +1 831 458 – 1110 ou +1 800 227 – 8074 Fax: +1 831 458 – 1239 automation@raytek.com United Kingdom Tel: +44 1908 630800 Fax: +44 1908 630900 ukinfo@raytek.com Raytek Japan, Inc. Tokyo Tel: +81 (‐3) 57 33 60 65 Fax: +81 (‐3) 57 33 60 99 info@raytekjapan.co.
WARRANTY The manufacturer warrants this instrument to be free from defects in material and workmanship under normal use and service for the period of two years from date of purchase. This warranty extends only to the original purchaser. This warranty shall not apply to fuses, batteries, or any product that has been subject to misuse, neglect, accident, or abnormal conditions of operation.
T ABLE OF C ONTENTS 1 SAFETY INSTRUCTIONS............................................1 2 DESCRIPTION ...............................................................3 3 TECHNICAL DATA ......................................................4 3.1 MEASUREMENT SPECIFICATIONS ...............................4 3.2 OPTICAL SPECIFICATIONS ..........................................6 3.3 ELECTRICAL SPECIFICATIONS ....................................7 3.4 ENVIRONMENTAL SPECIFICATIONS ...........................8 3.
5.3.1 Signal Output................................................... 19 5.3.2 Head Ambient Temp. / Alarm Output ............. 20 5.3.3 Thermocouple Output....................................... 22 5.4 INPUTS FTC.............................................................. 23 5.4.1 Emissivity Setting (analog controlled) ............. 24 5.4.2 Emissivity Setting (digital controlled) ............. 25 5.4.3 Ambient Background Temperature Compensation ..........................................................
8 ACCESSORIES .............................................................46 8.1 OVERVIEW ................................................................46 8.2 ADJUSTABLE MOUNTING BRACKET .........................48 8.3 FIXED MOUNTING BRACKET ....................................49 8.4 AIR PURGING JACKET...............................................50 8.5 AIR COOLING SYSTEM ..............................................52 8.6 RIGHT ANGLE MIRROR ............................................57 8.7 BOX LID ..
11.6.2 Analog Output, Scaling ................................. 72 11.6.3 Alarm Output................................................. 72 11.6.4 Factory default values..................................... 72 11.6.5 Lock Mode....................................................... 73 11.6.6 Mode Setting for the Digital Input FTC3....... 73 11.6.7 Changing the Sensing Head Calibration Data73 11.6.8 Ambient Background Temperature Compensation ............................................................ 73 11.
Safety Instructions 1 Safety Instructions This document contains important information, which should be kept at all times with the instrument during its operational life. Other users of this instrument should be given these instructions with the instrument. Eventual updates to this information must be added to the original document. The instrument should only be operated by trained personnel in accordance with these instructions and local safety regulations.
Safety Instructions Operating Instructions The following symbols are used to highlight essential safety information in the operation instructions: Helpful information regarding the optimal use of the instrument. Warnings concerning operation to avoid instrument damage. Warnings concerning operation to avoid personal injury. Pay particular attention to the following safety instructions. Use in 110 / 230 VAC electrical systems can result in electrical hazards and personal injury if not properly protected.
Description 2 Description The miniature infrared sensors MI are noncontact infrared temperature measurement systems. They accurately and repeat ably measure the amount of energy emitted from an object and convert that energy into a temperature signal.
Technical Data 3 Technical Data 3.1 Measurement Specifications Temperature Range LT ‐40 to 600°C (‐40 to 1112°F) for J‐Thermocouple: ‐25 to 600°C (‐13 to 1112°F) Spectral Response LT 8 to 14 μm Response Time All models 150 ms (95% response) Accuracy LT LT TC outputs ± 1% or ± 1°C (± 2°F) whichever is greater ± 2°C (± 4°F) for target temp. < – 20°C (4°F) ± 1% or ± 2.5°C (± 5°F) whichever is greater At ambient temperature 23°C ±5°C (73°F ±9°F) Repeatability All models 4 ± 0.5% or ± 0.
Technical Data Temperature Resolution LT ± 0.1 K (± 0.2°F)* ± 0.25 K (± 0.5°F)** At ambient temperature 23°C ± 5°C (73°F ± 9°F) * For a zoomed temperature span of 300°C (600°F) ** For the full temperature range of the unit Temperature Coefficient MIC ± 0.05 K per K or ± 0,05% / K whichever is greater, at ambient: 23 to 125°C (73 to 185°F) MIH ± 0.05 K per K or ± 0,05% / K whichever is greater, at ambient: 23 to 180°C (73 to 356°F) MIC, MIH ± 0.1 K per K or ± 0.
Technical Data 3.2 Optical Specifications Optical Resolution D:S MID, MIC MIH 2:1 or 10:1 10:1 At 90% energy in minimum and distance 400 mm (15.7 in.
Technical Data 3.3 Electrical Specifications Power Supply Voltage Current 12 to 24 VDC 100 mA Outputs 1. Output (OUT) 0 to 20 mA, or 4 to 20 mA, or 0 to 5 V, or Thermocouple (J or K) 2. Output (AMB) 0 to 5 V output for head ambient temperature (0 to 500°C, 32 to 932°F) or output for alarm relay (software enabled, only in conjunction with RS232/485) mA Output recommended loop impedance see Figure 9 on page 19. 0 to 5 V Outputs min.
Technical Data 3.
Technical Data 3.5 Dimensions Standard cable length 1 m (3 ft.) MID/MIC: Ø 5 mm (0.2 in) MIH: Ø 3 mm (0.12 in) Figure 2: Dimensions of Sensing Head 2 mounting holes, Ø 4.5 mm (0.
Technical Data 3.
Basics 4 Basics 4.1 Measurement of Infrared Temperature All surfaces emit infrared radiation The intensity of this infrared radiation changes according to the temperature of the object. Depending on the material and surface properties, the emitted radiation lies in a wavelength spectrum of approximately 1 to 20 μm. The intensity of the infrared radiation (”heat radiation”) is dependent on the material. For many substances this material‐dependent constant is known.
Basics 4.2 Emissivity of Target Object To determine the emissivity of the target object refer to section 12.1 Determination of Emissivity on page 80. If emissivity is low, measured results could be falsified by interfering infrared radiation from background objects (such as heating systems, flames, fireclay bricks, etc. close beside or behind the target object). This type of problem can occur when measuring reflective surfaces and very thin materials such as plastic films and glass.
Basics 4.5 Electrical Interference To minimize electrical or electromagnetic interference or “noise” be aware of the following: • Mount the unit as far away as possible from potential sources of electrical interference such as motorized equipment producing large step load changes. • Use shielded wire for all input and output connections. • Make sure the shield wires are earth grounded at one point. • Sensor head shield braid should make direct contact around the cable circumference.
Installation 5 Installation 5.1 Positioning Sensor location depends on the application. Before deciding on a location, you need to be aware of the ambient temperature of the location, the atmospheric quality of the location, and the possible electromagnetic interference in that location, according to the sections described above. If you plan to use air purging, you need to have an air connection available. Wiring and conduit runs must be considered, including computer wiring and connections, if used. 5.1.
Installation best good incorrect Sensor Target greater than spot size Target equal to spot size Target smaller than spot size Figure 4: Proper Sensor Placement 5.2 Wiring 5.2.1 Sensor Head Cable The manufacturer preinstalls the sensor head cable between sensor head and electronic box. It may be shortened but not lengthened. Shortening the cable length by 1 m (3 ft.) causes a temperature error of – 0.1 K / m! Do not bend the sensor head cable tighter than 25 mm / 1 in. (MID/MIC) and 15 mm / 0.6 in.
Installation 5.2.2 Cable Preparations You need to connect the power supply (12 to 24 VDC) and the signal output wires. Use only cable with outside diameter from 4 to 6 mm (0.16 to 0.24 in), AWG 24. The cable must include shielded wires. It should not be used as a strain relief! 1. 2. 3. Cut about 40 mm (1.5 in) of the cable sheath (7) from the end of the cable. Caution: Do not cut into the shield! Cut the shield (5) so about 5 mm (0.2 in) remains exposed from under the cable sheath (7).
Installation Preinstalled cable to sensor head Output signal and power connector block Cable that has to be installed by the user Figure 6: Connecting of Cables to the Electronic Box 5. 6. 7. 8. 9. MID Put the following on the cable (as shown in the figure above): the cap (1), the plastic compression fitting (2), the rubber washer (3) and one of the metal washers (4). Spread the cable shield (5) and then slip the second metal washer (4) on the cable.
Installation 5.3 Outputs Electronic Box J or K Signal Output 4 to 20 mA 0 to 5 V 0 to 20 mA Head Ambient Temp.
Installation 5.3.1 Signal Output Power + Power – Signal Signal Ground Output Figure 8: Wiring of the Signal Output (mA or V) Max. Loop Impedance [Ω] The signal output can be configured either as current or as voltage output. The minimum load impedance for the 0 to 5 V output must be 100 kΩ. The maximum current loop impedance for the 0/4 to 20 mA output can be 500 Ω, and the power supply and loop impedance must be matched as shown below. Max. Loop Impedance Power Supply [V] Figure 9: Max.
Installation 5.3.2 Head Ambient Temp. / Alarm Output This output can be configured either as output for the head ambient temperature (default configuration) or as an alarm output. Power + Power – Ground Head Ambient Temp. Figure 10: Wiring the Output for Head Ambient Temperature The output range for the head ambient temperature is 0 to 500°C (32 to 932°F) with 10 mV /°C. In case of an alarm the output switches between 0 V and 5 V.
Installation You may use a solid state relay for the alarm output. The output is short circuit resistant with 100 Ω output impedance. The alarm output is only enabled through the DataTemp MultiDrop software, see the software help for set up instructions.
Installation 5.3.3 Thermocouple Output If you are using a J‐ or K‐ thermocouple you must install a compensation cable. The cable is available as an accessory (XXXCI1CB25 for Type J, XXXCI2CB25 for Type K) with a cable length of 7.5 m (24.6 ft.
Installation 5.4 Inputs FTC The three inputs FTC1, FTC2, and FTC3 are used for the external control of the unit.
Installation 5.4.1 Emissivity Setting (analog controlled) The input FTC1 can be configured to accept an analog voltage signal (0 to 5 VDC) to provide real time emissivity setting. The following table shows the relationship between input voltage and emissivity. U in V 0.0 0.5 … 4.5 5.0 Emissivity 0.1 0.2 … 1.0 1.1 Table 4: Ratio between Analog Input Voltage and Emissivity Example: The process requires the setting of emissivity: • for product 1: 0.90 • for product 2: 0.
Installation 5.4.2 Emissivity Setting (digital controlled) The sensor’s electronics contains a table with 8 pre‐installed settings for emissivity. To activate these emissivity settings, you need to have the inputs FTC1, FTC2, and FTC3 connected. According to the voltage level on the FTC inputs, one of the table entries will be activated. 0 = Low signal (0 V) 1 = High signal (5 V) A non‐wired input is considered as “High”! Table entry Emissivity FTC3 FTC2 FTC1 (Examples) 0 1 2 3 4 5 6 7 1.100 0.500 0.
Installation 5.4.3 Ambient Background Temperature Compensation The sensor is capable of improving the accuracy of target temperature measurements by taking into account the ambient or background temperature. This feature is useful when the target emissivity is below 1.0 and the background temperature is significantly hotter than the target temperature. For instance, the higher temperature of a furnace wall could lead to hotter temperatures being measured especially for low emissivity targets.
Installation • Ambient background temperature compensation from a second temperature sensor (infrared or contact temperature sensor) ensures extremely accurate results. For example, the output of the second unit, set for mV output, could be connected to the FTC2 analog input (0 to 5 VDC corresponding to low end and high end of temperature range) is utilized for real time compensation, whereby both sensors must be set on the same temperature range.
Installation 5.4.4 Trigger and Hold Function The FTC3 input can be used as external trigger in conjunction with the software trigger mode setting “Trigger” or “Hold”. External switch: - contact relay, - transistor, - TTL gate, … Figure 17: Wiring of FTC3 as External Input Trigger: A logical low signal at the input FTC3 will reset the peak or valley hold function. As long as the input is kept at logical low level the software will transfer the actual object temperatures toward the output.
Installation Hold: This mode acts as external generated hold function. A transition at the input FTC3 from logical high level toward logical low level will transfer the current temperature toward the output. This temperature will be written to the output until a new transition from high to low occurs at the input FTC3.
Installation 5.5 Connecting to the PC via RS232 The RS232 interface comes with each model. Connect a single unit with a RS232 COM port by using the connection kit RAYMINCON.
Installation 5.6 Installing of Multiple Sensors via RS485 The distance between the sensor and a computer can be up to 1200 m (4000 ft.) via RS485 interface. This allows ample distance from the harsh environment where the sensing head is mounted to a control room or pulpit where the computer is located.
Installation For an installation of two or more sensors in a RS485 network, each sensor is wired parallel to the others. You may connect up to 32 units. Make sure to deactivate the preset shunt resistor for all units except for the last one. The position of the switch to deactivate the shunt you can see on the electronic board in the figure above. Before units are in a network the multidrop address needs to be defined.
Installation Go to the menu , and then select the register . Use for selecting the requested address. Figure 23: Address Setting Step‐by‐step instructions for addressing RS‐485 MI units: 1. 2. 3. 4. 5. Power the unit. Using either the buttons or software, assign unique address to the sensor. Power down the unit. Repeat until all sensors have a unique address.
Operation 6 Operation Once you have the sensor positioned and connected properly, the system is ready for continuous operation. The operation of the sensor can be done by means of the built‐in control panel on the sensor’s electronic board or by means of the software that came with your sensor optionally. 6.1 Control Panel The sensor is equipped with a control panel in the sensor’s electronic housing, which has setting/controlling buttons and an LCD display.
Operation 6.2 Setting of Modes You can easily determine the unit’s mode or parameter by doing the following: Press the button until the symbol for the actual set mode appears in the display, e.g. for setting the transmission, see Table 5: Available Modes, on page 36. Use the buttons until the requested value comes into view.
Operation Display Mode C Target Temperature* (effected by signal processing) A Head Ambient Temperature T Target Temperature (not effected by signal processing) Output Mode E T A P V L H U M * ** *** **** Emissivity Transmission Signal processing: Average** Signal processing: Peak Hold** Signal processing: Valley Hold** Low end of range High end of range Temperature Unit Multidrop Address*** Range not adjustable not adjustable not adjustable mV mV output (default) TCK thermocouple type K output TCJ therm
Operation 6.3 Setting the Output Jumper In addition to the set mode in the unit, see section 6.2 Setting of Modes on page 35, the unit’s outputs must be configured by switching the
Operation 6.4 Post Processing 6.4.1 Averaging Averaging is used to smooth the output signal. The signal is smoothed depending on the defined time basis, whereby the output signal tracks the detector signal with significant time delay but noise and short peaks are damped. Use a longer average time for more accurate damping behavior. The average time is the amount of time the output signal needs to reach 90% magnitude of an object temperature jump.
Operation object), the output signal reaches only 90% magnitude of the actual object temperature after the defined average time.
Operation 6.4.2 Peak Hold The output signal follows the object temperature until a maximum is found. Once the hold time is exceeded the output signal, tracks and output the actual object temperature and the algorithm will start over again. The range for the hold time is 0.1 to 998.9 s. Temp output temperature object temperature hold time hold time Time Figure 26: Peak Hold A defined hold time of 999 s (symbol “∞” in the display) will put the device into continuous peak detection mode.
Operation 6.4.3 Valley Hold The output signal follows the object temperature until a minimum is found. Once the hold time is exceeded the output signal, tracks and output the actual object temperature and the algorithm will start over again. The range for the hold time is 0.1 to 998.9 s. Temp output temperature object temperature hold time hold time Time Figure 27: Valley Hold A defined hold time of 999 s (symbol “∞” in the display) will put the device into continuous valley detection mode.
Operation 6.4.4 Advanced Peak Hold This function searches the sensor signal for a local maximum (peak) and writes this value to the output until a new local maximum is found. Before the algorithm restarts searching for a local maximum, the object temperature has to drop below a predefined threshold. If the object temperature raises above the held value which has been written to the output so far, the output signal follows the object temperature again.
Operation 6.4.5 Advanced Valley Hold This function works similar to the advanced peak hold function, except it will search the signal for a local minimum. 6.4.6 Advanced Peak Hold with Averaging The output signal delivered by the advanced peak hold functions tends to jump up and down. This is due to the fact, that only maximum points of the otherwise homogenous trace will be shown.
Operation 6.5 Factory Defaults For activating the unit’s factory default values press the buttons on the electronic board simultaneously. The factory default values are to be found in section 11.8 Command Set on page 76.
Options 7 Options Options are items that are factory installed and must be specified at time of order. The following are available: • • • Longer cable lengths: 3 m / 9.8 ft. (…CB3), 8 m / 26.2 ft. (…CB8), 15 m / 49.2 ft.
Accessories 8 Accessories 8.1 Overview A full range of accessories for various applications and industrial environments are available.
Accessories Sensing Head 2:1 Adjustable Bracket Electronic Box Sensing Head 10:1 Fixed Bracket Figure 30: Standard Mounting Accessories MID 47
Accessories 8.
Accessories 8.
Accessories 8.4 Air Purging Jacket The air purge jacket is used to keep dust, moisture, airborne particles, and vapors away from the sensing head. Clean, oil free air is recommended. The air purge jacket withstands ambient temperatures up to 180°C (356°F) and should not be used for cooling purposes. The recommended air flow rate is 30 to 60 l / min (0.5 to 1 cfm). The max. pressure is 5 bar. Hose with inner diameter of 3 mm (0.12 in), outside 5 mm (0.
Accessories Figure 34: Mounting the Air Purge Jacket 1. 2. 3. 4. MID Remove the sensor (1) and cable from the electronic box by disconnecting the wires from the electronic box. Open the Air Purging Jacket (3, 4) and screw the white plastic fitting (2) onto the sensor up to the end of the threads, do not over tighten! Slip the cable (6) through the backside (4) of the jacket. Close the Air Purging Jacket (3, 4) and reconnect the wires to the electronic box and apply the mounting nut (5).
Accessories 8.5 Air Cooling System The sensing head can operate in ambient temperatures up to 200°C (392°F) with the air‐cooling system. The air‐cooling system comes with a T‐adapter including 0.8 m (7.5 in) air hose and insulation. The T‐adapter allows the air‐cooling hose to be installed without interrupting the connections to the box. The air‐cooling jacket may be combined with the right angle mirror. max. ambient 200°C (392°F) Sensing Head max.
Accessories Air Flow: 60 l / min (2.1 cubic feet per minute) 50 l / min (1.8 cfm) 40 l / min (1.4 cfm) Hose Length Figure 37: Maximum Ambient Temperature depending on Air Flow and Hose Length Note: “Hose Length“ is the length of hose exposed to high ambient temperature (not the overall length of the hose).
Accessories Figure 38: Air Cooling System: Purging Jacket The Air Cooling System consists of: (1) sensing head (2) inner plastic fitting (air purging jacket) (3) front part of the air‐purging jacket (4) back part of the air‐purging jacket (5) mounting nut (6) preinstalled cable between sensor and box, leading through the T‐adapter (7) hose connecting nut (8) inner hose (9) outer hose (10) T‐adapter (11) rubber washer (12) plastic compression fitting (13) cap 54 MID
Accessories Figure 39: Air Cooling System: T‐Adapter MID 55
Accessories Hose: inner Ø: 9 mm (0.35 in) outer Ø: 12 mm (0.
Accessories 8.6 Right Angle Mirror The right angle mirror comes in two different versions: XXXMIACRAJ XXXMIACRAJ1 right angle mirror as accessory for air purging jacket or air cooling system right angle mirror with integrated air purging Figure 41: Right Angle Mirror XXXMIACRAJ (left), Right Angle Mirror with Air Purging XXXMIACRAJ1 (right) The right angle mirror withstands ambient temperatures up to 180°C (356°F). For mounting the right angle mirror (XXXMIACRAJ) see section 8.
Accessories 8.
Accessories 8.8 Protective Window The protective window can be used to protect the sensing head from dust and other contamination. This should be applied especially for sensors without a lens. These are all models with an optical resolution of 2:1. The protective window is made from non‐poisonous zinc sulfide, with a transmission factor of 0.75 ± 0.05. It has an outer diameter of 17 mm (0.67 in). The protective window can be directly screwed to the sensing head.
Maintenance 9 Maintenance Our sales representatives and customer service are always at your disposal for questions regarding application assistance, calibration, repair, and solutions to specific problems. Please contact your local sales representative if you need assistance. In many cases, problems can be solved over the telephone. If you need to return equipment for servicing, calibration, or repair, please contact our Service Department before shipping.
Maintenance 9.2 Fail‐Safe Operation The Fail‐Safe system is designed to alert the operator and provide a safe output in case of any system failure. The sensor is designed to shutdown the process in the event of a set‐up error, system error, or a failure in the sensor electronics. The Fail‐Safe circuit should never be relied on exclusively to protect critical processes.
Maintenance Error Codes via RS232/485 Output T-----T>>>>>> T<<<<<< Error Code Description Invalid temperature reading Temperature over range Temperature under range Table 8: Error Codes (via RS232/485) Error Codes for the LCD Display Display ----C H-ERR B-ERR OVER UNDER 2.
Maintenance 9.3 Sensing Head Exchange MIH sensing heads and electronic boxes can not be interchanged with MID/MIC sensing heads and electronic boxes! The head exchange requires to type in the new sensing head calibration data printed on the cable as follows: 1. To exchange the sensing head, disconnect the power of the unit. 2. Connect the wires for the new sensing head according to the color description on the printed circuit board. 3. Switch the power for the unit to ON. 4.
Software 10 Software For use with RS232 or RS485 models, DataTemp MultiDrop software allows access to the extended digital features of the MID with an easy‐to‐use interface. Compatible with WIN 95/98/NT/2000/XP, DataTemp MultiDrop provides for sensor setup, remote monitoring, and simple data logging for analysis or to meet quality record‐ keeping requirements.
Programming Guide 11 Programming Guide This section explains the sensor’s communication protocol. A protocol is the set of commands that define all possible communications with the sensor. The commands are described along with their associated ASCII command characters and related message format information. Use them when writing custom programs for your applications or when communicating with your sensor with a terminal program.
Programming Guide 11.1 Transfer Modes The unit’s serial interface is either RS232 or RS485, depending on the model. Settings: transfer rate: 9.6 kBaud, 8 data bits, 1 stop bit, no parity, flow control: none (half duplex mode). There are two possible transfer modes for the serial interface: Poll Mode: By user interface control, a parameter will be set or requested. Burst Mode: A pre‐defined data string (“burst string“) will be transferred as fast as possible as long as the burst mode is activated.
Programming Guide 11.2 General Command Structure Requesting a parameter (Poll Mode) ?ECR “?“ is the command for “Request“ “E“ is the parameter requested “CR“ (carriage return, 0Dh) is closing the request. Remark: It is possible to close with “CR“ “LF“, 0Dh, 0Ah, but not necessary. Setting a parameter (Poll Mode) The parameter will be stored into the device EEPROM. E=0.975CR “E“ is the parameter to be set “=“ is the command for “set a parameter“ “0.
Programming Guide After switching the power to “ON“, the device is sending a notification: #XICRLF “#“ is the parameter for “Notification“ “XI“ is the value for the notification (here “XI“; unit switches to “ON”) “CR“ “LF“ (0Dh 0Ah) is closing the answer. Error message *Syntax Error “*“ is the character for “Error“ 11.3 Device Information This information is factory installed, read only. Command Description ?XU ?DS ?XV ?XR ?XH ?XB Answer (Example) Device name “XUMILT“ Remark (e.g.
Programming Guide 11.4 Device Setup 11.4.1 Temperature Calculation U=C E=0.950 XG=1.000 unit for the temperature value Emissivity setting (Caution: according to the settings for “ES”, see section 11.4.2 Emissivity Setting and Alarm Setpoints on page 69.) Setting for transmission For the calculation of the temperature value, it is possible to set an offset (relative number to be added to the temperature value), and a gain value. DG=1.
Programming Guide There are eight entries possible for emissivity setting (1) and a related set point (threshold) (2). To be able to write or read these values, use the following commands: EP=2 set pointer for table entry, e.g. to line 2 (3) RV=0.600 set the emissivity value for line 2 to 0.600 (4) SV=220.0 set the set point (threshold) for line 2 to 220.
Programming Guide 11.4.3 Post Processing The following parameters can be set to determine the post processing mode, see section 6.4 Post Processing on page 38. P=5 F=12.5 G=10 XY=3 XY=‐2 peak hold, hold time: 5 s valley hold, hold time: 12.5 s averaging, average time (90%): 10 s advanced peak hold, hysteresis: 3 K advanced valley hold, hysteresis: 2 K C=250 AA=15 Advanced Peak/Valley Hold with Averaging: threshold: 250°C averaging time (90%): 15 s 11.
Programming Guide 11.6 Device Control 11.6.1 Output for the Target Temperature The signal output can be set to 4 – 20 mA, 0 – 20 mA or mV. If current output is activated, the output can provide a predefined current: XO=4 O=13.57 O=60 output mode to 4 – 20 mA output of a constant current at 13.57 mA switches back to the temperature controlled output 11.6.
Programming Guide XF factory default values will be set 11.6.5 Lock Mode The access to the unit is possible via serial interface (software) and via the direct user input (mode buttons, LCD display). It is possible to lock the buttons. This allows access the unit only via software. J=L direct user input via mode buttons denied Alternatively the unit can be unlocked by pressing the buttons simultaneously for three seconds. 11.6.
Programming Guide AC=2 compensation with an external voltage signal at the analog input FTC2 (0 V – 5V corresponds to low end and high end of temperature range), current ambient temperature is readable with command A. Note: The mode AC = 2 does not function in case of setting the command ES = D! For more information regarding the ambient background temperature compensation see section 5.4.3 Ambient Background Temp. Compensation en page 26.
Programming Guide 11.7 Multiple Units (Multidrop Mode, RS485) Up to 32 units can be connected within a RS485 network, see section 5.6 Installing of Multiple Sensors via RS485 on page 31. To direct a command to one unit among the 32 possible, it is necessary to „address“ a command. Therefore, a 3‐digit number is set prior the command. The 3‐digit number is determined between 001 and 032. Exception: Broadcast command.
Programming Guide 11.8 Command Set Description Char Format Poll parameter Set parameter Set parameter without EEPROM storage Multidrop addressing ? = # Error message Acknowledge message Burst string format Ambient background temp. compensation Advanced hold with average Control ambient background temp. compensation * ! $ A P B S Legal values Factory default ?X/?XX X/XX=... X/XX# * ?T * E=0.85 * E#0.85 001?E * nnn.n * * * answer: 001!E0.95 *Syntax error !P010 * (3) * (1) UTEI (6) AA nnn.
Programming Guide Description Char Format P B Source: emissivity / setpoint for alarm output ES X * Presel. emissivity value Valley hold time(4) EV n.nnn F nnn.n * * * Average time Top of mA/mV range Sensor / head ambient G H I nnn.n nnn.n nnn.n * * * * * * Switch panel lock J X * Alarm output control K N * Bottom of mA/mV range Output voltage L O nnn.n n.nnn * * Output current O nn.nn * Peak hold time (4) P nnn.
Programming Guide Description Char Format P B S Legal values Presel. setpoint / relay function Target temperature SV nnn.n T nnn.n * * Temperature unit Poll / Burst mode U V X X * * * Burst string contents Multidrop address X$ XA nnn * * Bottom temperature of range Restore factory defaults Transmission High temperature of range Sensor initialization XB nnn.n * XF XG n.nnn XH nnn.n * * * XI n * * Box temperature XJ nnn.
Programming Guide (3) (4) (6) (7) (8) (9) (10) $ = UTQE setting average / peak / valley / advanced hold cancels all other hold modes LT: 23°C (73°F) LT: 500°C (932°F) LT: 0°C (32°F) XZ = 0123 4567 89AB CDEF set command checks format! Save values and restart firmware E0=1.100, E1=0.500, E2=0.600, E3=0.700, E4=0.800, E5=0.970, E6=1.000, E7=0.
Appendix 12 Appendix 12.1 Determination of Emissivity Emissivity is a measure of an object’s ability to absorb and emit infrared energy. It can have a value between 0 and 1.0. For example a mirror has an emissivity of < 0.1, while the so‐called “Blackbody“ reaches an emissivity value of 1.0. If a higher than actual emissivity value is set, the output will read low, provided the target temperature is above its ambient temperature. For example, if you have set 0.95 and the actual emissivity is 0.
Appendix 12.2 Typical Emissivity Values The following table provides a brief reference guide for determining emissivity and can be used when one of the above methods is not practical. Emissivity values shown in the table are only approximate, since several parameters may affect the emissivity of a material. These include the following: 1. 2. 3. 4. 5. 6. 7.
Appendix METALS Material Aluminum Unoxidized Oxidized Alloy A3003, Oxidized Roughened Polished Brass Polished Burnished Oxidized Chromium Copper Polished Roughened Oxidized Gold Haynes Alloy Inconel Oxidized Sandblasted Electropolished Iron Oxidized Unoxidized Rusted Molten Iron, Cast Oxidized Unoxidized Molten Iron, Wrought Dull Lead 82 Emissivity 3.9 µm 5 µm 8 – 14 µm 0.02-0.2 0.2-0.4 0.4 0.1-0.4 0.02-0.1 0.02-0.2 0.2-0.4 0.4 0.1-0.4 0.02-0.1 0.02-0.1 0.2-0.4 0.3 0.1-0.3 0.02-0.1 0.01-0.05 0.3 0.
Appendix Polished Rough Oxidized Magnesium Mercury Molybdenum Oxidized Unoxidized Monel (Ni-Cu) Nickel Oxidized Electrolytic Platinum Black Silver Steel Cold-Rolled Ground Sheet Polished Sheet Molten Oxidized Stainless Tin (Unoxidized) Titanium Polished Oxidized Tungsten Polished Zinc Oxidized Polished 0.05-0.2 0.4 0.2-0.7 0.03-0.15 0.05-0.15 0.05-0.2 0.4 0.2-0.7 0.03-0.15 0.05-0.15 0.05-0.1 0.4 0.2-0.6 0.02-0.1 0.05-0.15 0.3-0.7 0.1-0.15 0.1-0.5 0.3-0.7 0.1-0.15 0.1-0.5 0.2-0.6 0.1 0.1-0.14 0.3-0.
Appendix NON-METALS Material Emissivity 3.9 µm Asbestos Asphalt Basalt Carbon Unoxidized Graphite Carborundum Ceramic Clay Concrete Cloth Glass Plate “Gob” Gravel Gypsum Ice Limestone Paint (non-al.) Paper (any color) Plastic, opaque at 500 µm (20 mils) thickness Rubber Sand Snow Soil Water Wood, Natural 5 µm 8 – 14 µm 0.9 0.95 0.7 0.95 0.95 0.7 0.8-0.9 0.7-0.9 0.9 0.8-0.95 0.85-0.95 0.9 0.95 0.8-0.9 0.7-0.8 0.9 0.95 0.95 0.95 0.95 0.98 0.9 0.95 0.4-0.97 — 0.4-0.98 — 0.95 0.85 — 0.95 0.8-0.95 0.
Index Index Accessories Accuracy Air pressure Air Purge Air Purge Jacket Ambient Temperature Average Control Panel Emissivity Loop impedance Maintenance Mirror Network Noise Optical Resolution Power Supply Repeatability Response Time Spectral Response Spot Size Temperature Coefficient Temperature Resolution Thermal Shock Transmission Transmission Troubleshooting Valley Hold MID 46 4 12 46 12 12 60 34, 59 5, 11, 12, 60, 80, 81, 83, 84 19 60 57, 80 32 13 6 60 4 4 4 14 5 5 5 5 81 60 60 85
