DATA SHEET Liquid Level Switches Optomax Digital Series FEATURES * Liquid level switches that can detect almost any liquid type; oil or water based * * Choice of material; Polysulfone (standard) or Trogamid(R) Choice of threads Housing/ Mounting Output Type / Logic BENEFITS * * * Supply Voltage Output Current Temp OUTPUT VALUES Low power Low cost Output Voltagec (Vout): Output High Output Low lout = 100mA Vout = Vs - 1.5V max Vout = 0V + 0.5V max PWM Duty cycle in air Duty cycle in liquid Frequency 25% 10% 75% 10% 2kHz 10% Compact design TECHNICAL SPECIFICATIONS Supply voltage (Vs) or 4.5VDC to 15.4VDC 4.5VDC to 5.5VDC (PWM output) Supply current (ls) 2.5mA max. (Vs = 15.4VDC) Output sink and source current (lout) 100mA Operating temperatures Standard: -25C to +80C Extended: -40C to +125C Storage temperatures Standard: -30C to +85C Extended: -40C to +125C Housing materiala, b Polysulfone or Trogamid(R) Sensor termination 24AWG, 250mm PTFE wires, 8mm tinned a) NOTES b) c) Other sensor options available on request, email: technical@sstsensing.com Need help? Ask the expert Tel: + 44 (0)1236 459 020 and ask for "Technical" Above +85C, Trogamid is suitable for use in water based liquids. Oil based liquids can cause deformation of the sensing tip and must be tested for compatibility. Before use check that the fluid in which you wish to use these devices is compatible either with Polysulfone or Trogamid(R). Voltages applicable to output value stated. OUTLINE DRAWING HOUSING SPECIFICATIONS All dimensions shown in mm. Tolerances = 1mm. Housing Series Type 1 Type 1 Type 2 Type 2 Type 3 Thread M12x1-8gd Pressureg 7 bar / 101 psi maximum Tightening Torque 1.5 Nm / 13.26 in-lbs maximum Housing Series Type 5 Type 6 Type 7 Thread M10x1 1/2"-20 UNFe 1/4" NPTf Pressureg 20 bar / 209 psi max. Type 3 Tightening Torque Type 5 7 bar / 101 psi maximum 1.5 Nm / 13.26 in-lbs maximum ELECTRICAL INTERFACE Type 6 Type 7 NOTES d) e) f) g) Types 1, 2 and 3 can be sealed with washers and locknuts. Type 6 should be sealed with Parker 3-905 type o-ring. Type 7 should be sealed with PTFE tape. When correctly sealed. Wire Designation Red Vs Green Output Blue 0V CIRCUIT DIAGRAMS In order to suit any application, these sensors have been designed with various output circuit configurations. CAUTION: Take care when connecting loads. The minimum load impedance should not exceed Vs/max output current. Note: Shorting the output to Vs or 0V will result in irreparable damage to the sensor. ORDER INFORMATION Generate your specific part number using the convention shown opposite. Use only those letters and numbers that correspond to the sensor and output options you require -- omit those you do not. Sensor mounted from inside vessel L L X X X 0 D Sensor mounted from outside vessel 3 L X L X X X 0 D 3 S H Housing Material Housing Type Operating Temp. Output Logic Housing Material Housing Type Operating Temp. Output Logic C Polysulfone 3 Type 3 M12x1-8g 0 -25 C to +80C Blank Output High in air C Polysulfone 1 Type 1 M12x1-8g 0 -25 C to +80C Blank Output High in air T Trogamid(R) 5 Type 5 M10x1 1 -40 C to +125C L Output Low in air T Trogamid(R) 2 Type 2 M12x1-8g 1 -40 C to +125C L Output Low in air P PWM output 6 Type 6 1/2"-20 UNF 7 Type 7 1/4" NPT Notes: * * * X Type 3 and Type 5 sensors are mounted internally. Types 1, 2, 6 & 7 sensors are mounted externally. SH suffix applicable to Types 1, 2, 6 & 7 sensors only; omit from Type 3 and Type 5 sensor part numbers. Please contact SST Sensing for details; email: technical@sstsensing.com P PWM output CAUTION INFORMATION Do not exceed maximum ratings and ensure sensor(s) are operated in accordance with their requirements. Carefully follow all wiring instructions. Incorrect wiring can cause permanent damage to the device. SST Sensing Ltd recommend using alcohol based cleaning agents. Do NOT use chlorinated solvents such as trichloroethane as these are likely to attack the sensor material. Failure to comply with these instructions may result in product damage. As customer applications are outside of SST Sensing Ltd.'s control, the information provided is given without legal responsibility. Customers should test under their own conditions to ensure that the equipment is suitable for their intended application. Before use, check that the fluid in which you wish to use these devices is compatible with Polysulfone or Trogamid(R). For technical assistance or advice, please email: technical@sstsensing.com General Note: SST Sensing Ltd. reserves the right to make changes to product specifications without notice or liability. All information is subject to SST Sensing Ltd.'s own data and considered accurate at time of going to print. DS-0032 REV 15 (c) 2017 SST SENSING LTD. 5 HAG MI L L CRESC ENT , SHAW HEAD I NDUST RI AL EST AT E, CO AT BRI DG E, UK ML 5 4 NS www. sst se n si n g . co m | e : sa l e s@ sst se n sin g . co m | t : +4 4 ( 0 ) 1 2 3 6 45 90 2 0 | f : +4 4 ( 0) 1 2 3 6 4 5 9 02 6