Sensing and Control Tube Liquid Sensor OPB350 / OCB350 Series (Calibration Circuit Available) Features: • Can iden fy if liquid is present in clear tubes that have an outside diameter of 1/16” [1.6mm], 1/8" [3.2mm], 3/16" [4.8 mm] or 1/4" [6.3 mm] • Opaque plas c housing enhances ambient light rejec on • Printed circuit board moun ng or 24” (610 mm) 26 AWG wires “N” Package “C” Package “T” Package DescripƟon: The OPB350 series liquid sensor is designed to work with 1/16” [1.6mm] 1/8” [3.2mm], 3/16” [4.8 mm] and 1/4” [6.3 mm] outside diameter clear tubes. When output reference circuitry is added, mul ple output states such as “fluid present,” “no fluid present” and “no tube present” can be recognized. Clear liquid present causes the phototransistor to sink the maximum current, while dark liquid present causes it to sink the minimum current. As bubbles pass through the tube, the signal will vary between the “liquid present” and “no liquid” states. If no tube is present, the phototransistor sinks current between the dark fluid and clear fluid states. The customer will have to iden fy the typical current values for each situa on. The ra o between the different states allows acknowledgement of different condi ons. The OPB350L series have leads that are designed to mount directly to PCBoards. The OPB350W series with 26 AWG wires are remote mountable. The OCB350 series provides a full solu on with automa c calibra on capability and a preset trip level. The OCB350 series is configured to op mize the design effort needed to use a fluid sensor with the addi on of self calibra on circuitry. The OCB350 series are easy to use requiring only an op cal device and power supply. Four lights are provided on the board that acknowledge when the device is calibrated (Green LED), that the device could not be calibrated (Red LED) and when the analog output has reached the logical trip higher than the calibra on point (Blue LED) or lower than the calibra on point (Green LED). The internal phototransistor load resistance can be set for three different values (~2.5K, ~9.6K or ~27K Ohms). A Reset/Clear pin is provided for remote signaling to calibrate of the system. The OCB350 series comes with an OPB350L_ _ _Z, PCBoard, interface cable (OCB100-MC24) and all the necessary electronics required for sensing either transmissive or opaque fluids. See “Theory of Opera on” for detailed informa on. For a custom PCBoard design for your unique challenge, contact your OPTEK representa ve. ApplicaƟons: • • • • • • Non-contact fluid sensing IV fluid Oils and other petroleum products Colored fluids Toner fluids Water RoHS General Note TT Electronics reserves the right to make changes in product specificaƟon without noƟce or liability. All informaƟon is subject to TT Electronics’ own data and is considered accurate at Ɵme of going to print. © TT electronics plc 1645 Wallace Drive, Carrollton, TX 75006|Ph: +1 972 323 2200 www.optekinc.com | www. electronics.com Issue G 09/2015 Page 1 Sensing and Control Tube Liquid Sensor OPB350 / OCB350 Series (Calibration Circuit Available) COMPLETE PART NUMBERS OF OPB350 AND OCB350 SERIES OPB350 PCB mount for 1/8” tubing OPB350L062 PCB mount for 1/16” tubing OPB350W062Z Wired assembly for 1/16” tubing, with moun ng tabs OPB350L125 PCB mount for 1/8” tubing OPB350C125Z Wired assembly for 1/8” tubing, moun ng tabs & Molex connector 50-57-9404 OPB350W125Z Wired assembly for 1/8” tubing, with moun ng tabs OPB350L187 PCB mount for 3/16” tubing OPB350W187Z Wired assembly for 3/16” tubing, with moun ng tabs OPB350L250 PCB mount for 1/4” tubing OPB350W250Z Wired assembly for 1/4” tubing, with moun ng tabs OCB350L062Z OPB350L062 mounted on OCB100AZ calibra on circuit board, with OCB-MC24 cable OCB350L125Z OPB350L125 mounted on OCB100AZ calibra on circuit board, with OCB-MC24 cable OCB350L187Z OPB350L187 mounted on OCB100AZ calibra on circuit board, with OCB-MC24 cable OCB350L250Z OPB350L250 mounted on OCB100AZ calibra on circuit board, with OCB-MC24 cable Notes: (1) All parameters tested using pulse technique. (2) RMA flux is recommended. Dura on can be extended to 10 seconds maximum when flow soldering. (3) Methanol or isopropanol are recommended as cleaning agents. The plas c housing is soluble in chlorinated hydrocarbons and keytones. (4) Derate linearly 1.33 mW/° C above 25° C. (5) Ee(APT) is a measurement of the average apertured radiant energy incident upon a sensing area 0.250” (6.350 mm) in diameter, which is perpendicular to and centered to the mechanical axis of the emi ng surface at a distance of 0.466” (11.837 mm). Ee(APT) is not necessarily uniform within the measured area. (6) The on/off ra o is referenced to the I.D. as specified for a clear PVC tube with O.D. per the device dimensions. The ra o is calculated by the IC(ON) when the tube is filled with water divided by the IC(ON) with an empty tube. General Note TT Electronics reserves the right to make changes in product specificaƟon without noƟce or liability. All informaƟon is subject to TT Electronics’ own data and is considered accurate at Ɵme of going to print. © TT electronics plc 1645 Wallace Drive, Carrollton, TX 75006|Ph: +1 972 323 2200 www.optekinc.com | www. electronics.com Issue G 09/2015 Page 2 Sensing and Control Tube Liquid Sensor OPB350 / OCB350 Series (Calibration Circuit Available) Electrical SpecificaƟons Absolute Maximum RaƟngs (TA = 25° C unless otherwise noted) Storage Temperature -40° C to +100° C Opera ng Temperature -40° C to +85° C Lead Soldering Temperature [1/16 inch (1.6 mm) from the case for 5 sec. with soldering iron] (2) 260° C LED Forward DC Current 50 mA Peak Forward Current (2 μs pulse width, 0.1% duty cycle) 1A Reverse DC Voltage 2V Power Dissipa on 100 mW Output Phototransistor Collector-Emi er Voltage 24 or 30 V Collector DC Current 50 mA Power Dissipa on 100 mW Electrical CharacterisƟcs (TA = 25° C unless otherwise noted) SYMBOL PARAMETER MIN TYP MAX UNITS TEST CONDITIONS Input LED (See OP245 for addi onal informa on — for reference only) VF Forward Voltage - - 1.7 V IF = 20 mA IR Reverse Current - - 100 µA VR = 2.0 V Output Phototransistor (See OP555 [OPB350] & OP750 [-062, -125, -187 & -250] for addi onal informa on— for Ref. Only) V(BR)CEO ICEO Collector-Emi er OPB350 Breakdown Voltage -062, -187 & -250 30 24 - - V IC = 100 μA, EE = 0 mw/cm2 Collector-Emi er Dark Current - - 100 nA VCE = 10 V, IF = 0, EE = 0 mw/cm2 Collector-Emi er Satura on Voltage - - 0.4 V IC = 100 μA, IF = 5 mA 0.30 1.00 1.30 1.00 0.75 0.8 3.5 2.6 2.0 1.5 1.3 6.0 3.9 4.0 3.0 mA VCE = 0.4 V, IF = 5 mA - 3.0 3.0 2.5 2.3 2.3 - Coupled VCE(SAT) IC(ON) On-State Collector Current OPB350L062 & OPB350W062Z OPB350 OPB350L125 & OPB350W125Z OPB350L187 & OPB350W187Z OPB350L250 & OPB350W250Z On/Off Ra o OPB350L062 & OPB350W062Z OPB350 OPB350L125 & OPB350W125 OPB350L187 & OPB350W187 OPB350L250 & OPB350W250 General Note TT Electronics reserves the right to make changes in product specificaƟon without noƟce or liability. All informaƟon is subject to TT Electronics’ own data and is considered accurate at Ɵme of going to print. © TT electronics plc - VCE = 0.4 V, IF = 5 mA , I.D.=0.0312”(6) VCE = 0.4 V, IF = 5 mA , I.D.=0.0625”(6) VCE = 0.4 V, IF = 5 mA , I.D.=0.0870”(6) VCE = 0.4 V, IF = 5 mA , I.D.=0.1250”(6) 1645 Wallace Drive, Carrollton, TX 75006|Ph: +1 972 323 2200 www.optekinc.com | www. electronics.com Issue G 09/2015 Page 3 Sensing and Control Tube Liquid Sensor OPB350 / OCB350 Series (Calibration Circuit Available) OPB350 General Note TT Electronics reserves the right to make changes in product specificaƟon without noƟce or liability. All informaƟon is subject to TT Electronics’ own data and is considered accurate at Ɵme of going to print. © TT electronics plc 1645 Wallace Drive, Carrollton, TX 75006|Ph: +1 972 323 2200 www.optekinc.com | www. electronics.com Issue G 09/2015 Page 4 Sensing and Control Tube Liquid Sensor OPB350 / OCB350 Series (Calibration Circuit Available) OPB350L187 and OPB350L250 OPB350W187Z and OPB350W250Z Dot Dot Solder pad Information DIMENSIONS ARE IN: [ MILLIMETERS] INCHES 1 Pin LED Pin # Transistor 1 2 Anode Cathode 4 3 Emitter Collector 4 2 General Note TT Electronics reserves the right to make changes in product specificaƟon without noƟce or liability. All informaƟon is subject to TT Electronics’ own data and is considered accurate at Ɵme of going to print. © TT electronics plc 3 1645 Wallace Drive, Carrollton, TX 75006|Ph: +1 972 323 2200 www.optekinc.com | www. electronics.com Issue G 09/2015 Page 5 Sensing and Control Tube Liquid Sensor OPB350 / OCB350 Series (Calibration Circuit Available) OCB350 Shor ng Bar Posi on 3 2 1 Load Resistance ~27 KW ~9.6 KW ~2.5 KW J1—Pin # 6 0.125” J-1 OCB100-MC24 Pin # FuncƟon Color 1 Vcc Red 2 Logic Out A Orange 3 Logic Out B Blue 4 Calibrate Green 5 Analog Out White 6 Ground Black ±0.02 General Note TT Electronics reserves the right to make changes in product specificaƟon without noƟce or liability. All informaƟon is subject to TT Electronics’ own data and is considered accurate at Ɵme of going to print. © TT electronics plc 1645 Wallace Drive, Carrollton, TX 75006|Ph: +1 972 323 2200 www.optekinc.com | www. electronics.com Issue G 09/2015 Page 6 Sensing and Control Tube Liquid Sensor OPB350 / OCB350 Series (Calibration Circuit Available) OCB-MC24 AWG = 28 General Note TT Electronics reserves the right to make changes in product specificaƟon without noƟce or liability. All informaƟon is subject to TT Electronics’ own data and is considered accurate at Ɵme of going to print. © TT electronics plc Length = 24” [610mm] 1645 Wallace Drive, Carrollton, TX 75006|Ph: +1 972 323 2200 www.optekinc.com | www. electronics.com Issue G 09/2015 Page 7 Sensing and Control Tube Liquid Sensor OPB350 / OCB350 Series (Calibration Circuit Available) CalibraƟon Circuit theory of operaƟon: The OCB350 series is designed to minimize the change of op cal devices due to manufacturing variance. With the calibra on circuit, the design engineer can narrow the ini al output state providing a device that will operate the same for years with the same startup state thus enhancing the reliability and consistence of the system. Degrada on of the LED or phototransistor is compensated for each me the system is calibrated allowing the system to provide a known, consistent output level resul ng in years of consistent quality. The OCB350 series are designed to maintain the calibrated se ng even if power is lost. This allows faster startup without the need for calibra on every me the device is ini ated. The designer can ini ate the calibra on procedure at any me by momentarily grounding J1-Pin-4 (green wire). This allows the device to be remotely calibrated then mounted in the equipment. The PCBoard has a set of shor ng pins allowing the user to change the phototransistor load resistor. By arranging the shor ng bar to the appropriate loca on (see table), the load resistance can be changed from approximately 2.5K to 27 K W. Increasing the load resistor increases the sensi vity of the device. When the “Calibrate” pin (#4) is momentarily grounded, the system begins its calibra on process and raises the current through the LED, from 0 mA to 14 mA, un l the phototransistor reaches the preset calibra on point. A green calibra on light will blink during the ini a on and will stop when the preset phototransistor output level is reached. At this me, the LED drive current is locked and maintained un l Reset/Clear pin is momentarily grounded. If for some reason, the LED drive current reaches the maximum allowable value, a RED warning light will be turned on. During the calibra on process, remote monitoring of J1-Pin3 allows the designer to ensure the system is calibrated (this output should be at the preset calibrated output level when the calibra on procedure is completed). The phototransistor load resistor may need to be adjusted to allow the system to calibrate properly. A er the calibra on process is complete, the device is ready for acknowledgement of a change in the signal. The design engineer can monitor either the Analog Output (J1-Pin 5) or Logical Output (J1-Pin 2 or J1-Pin 3). The Logical output will change state once the preset op cal light condi on is reached. The “Logic Out B” switches when the op cal signal increases above approximately 2/3 of VCC while “Logic Out A” switches when the op cal signal decreases below approximately 1/3 of VCC. As with all op cal devices, the switching condi on is consistent with the phototransistor receiving a preset light level. This switching posi on and light level may vary dependent on several possible factors such as: • Ambient light varia on ((reduced or eliminated with periodic recalibra on) • LED and phototransistor pair degrada on (eliminated with periodic recalibra on) • Contamina on in front of either the LED or phototransistor (reduced or eliminated with periodic cleaning) • System power varia on (reduced or eliminated with periodic recalibra on) • Temperature changes (reduced or eliminated with periodic recalibra on) General Note TT Electronics reserves the right to make changes in product specificaƟon without noƟce or liability. All informaƟon is subject to TT Electronics’ own data and is considered accurate at Ɵme of going to print. © TT electronics plc 1645 Wallace Drive, Carrollton, TX 75006|Ph: +1 972 323 2200 www.optekinc.com | www. electronics.com Issue G 09/2015 Page 8 Sensing and Control Tube Liquid Sensor OPB350 / OCB350 Series (Calibration Circuit Available) Electrical SpecificaƟons Absolute Maximum Ratings OCB350 Series (TA=25°C unless otherwise noted) Storage & Operating Temperature Range 0°C to +70°C Lead Soldering Temperature [1/16 inch (1.6mm) from the case for 5 sec. with soldering iron] 260°C Electrical Characteristics OCB350 Series (TA = 25°C unless otherwise noted) Symbol Min Max VCC Supply Voltage 4.75 5.25 V ICC Supply Current - 35 mA - 1.2 V Vcc = 5.0 Volts, VOUT < 2.2 Volts 3.5 - V Vcc = 5.0 Volts, VOUT > 2.8 Volts VOL VOH Parameter (1) Low Level Output Voltage High Level Output Voltage(1) Units Conditions Vcc = 5.0 Volts Notes: 1. Pins 2 and 3 logic outputs only. General Note TT Electronics reserves the right to make changes in product specificaƟon without noƟce or liability. All informaƟon is subject to TT Electronics’ own data and is considered accurate at Ɵme of going to print. © TT electronics plc 1645 Wallace Drive, Carrollton, TX 75006|Ph: +1 972 323 2200 www.optekinc.com | www. electronics.com Issue G 09/2015 Page 9 Sensing and Control Tube Liquid Sensor OPB350 / OCB350 Series (Calibration Circuit Available) Schematic for OCB100 PCBoard R17 R10 5.6 V J1 - Pin 1 Blue R2 3 5 2 1 VDD GP4/AN3 GP3/MCLR U2 GP2/AN2 GP5/T1CKI GP0/AN0 GP1/AN1 R6 C1 D4 0.1µf Green LM324 4 Green Optical Device J1 - Pin 5 6 D5 U1 J1 - Pin 4 7 Vss 8 470 R11 C4 R1 R3 D2 D3 0.1µf J1 - Pin 3 R13 R12 R14 470 U3 LM324 D1 U1 Red J1 - Pin 2 J1 J2 R5 1 C2 R4 LM324 2 3 Q1 U1 R8 R16 R15 R9 0.1µf C3 0.1µf R7 1 Vcc 2 Logic Out A 3 Logic Out B 4 Calibrate Calibrate/Reset-Clear 5 Analog Out 6 Ground J1 - Pin 6 J1 = JST connector S6B-ZR(LF)(SN) OCB100-MC24 A B Calibrate/Reset-Clear General Note TT Electronics reserves the right to make changes in product specificaƟon without noƟce or liability. All informaƟon is subject to TT Electronics’ own data and is considered accurate at Ɵme of going to print. © TT electronics plc 1645 Wallace Drive, Carrollton, TX 75006|Ph: +1 972 323 2200 www.optekinc.com | www. electronics.com Issue G 09/2015 Page 10 Sensing and Control Tube Liquid Sensor OPB350 / OCB350 Series (Calibration Circuit Available) ( Typical VSAT vs Temperature 0.09 ) Normalized IC(ON) vs Temperature 1.2 Normalized @ T=20°C 0.08 1.0 0.06 Relative I C(ON) V SAT (Volts) 0.07 0.05 0.04 0.03 0.02 0.8 0.6 0.4 0.2 0.01 Normalized @ IF = 5mA, ICE = 100uA 0.0 0.00 -40 -20 0 20 40 60 80 100 -40 -20 0 20 40 60 80 100 Temperature (°C) Temperature (°C) Rise & Fall Time vs Load Resistance Test Circuit (Rise & Fall Time) 300 VR2 = 1.0 Rise & Fall Time (usec) 250 Fall 200 150 100 50 Rise 0 1 2 3 4 5 6 7 8 9 10 Load Resistance (,000 Ohms) General Note TT Electronics reserves the right to make changes in product specificaƟon without noƟce or liability. All informaƟon is subject to TT Electronics’ own data and is considered accurate at Ɵme of going to print. © TT electronics plc 1645 Wallace Drive, Carrollton, TX 75006|Ph: +1 972 323 2200 www.optekinc.com | www. electronics.com Issue G 09/2015 Page 11