Thermal Dispersion Flow Switch
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thermal dispersion flow switch series tds thermal dispersion flow switch adjustable switch point, led indication the series tds thermal dispersion flow switch offers solid state flow detection of non-coating liquids for pump and process protection. Spdt output allows for interfacing with remote plc or relay control device. The adjustable switch point is factory calibrated at 0.2 fps with led indication of flow and calibration status. Units feature selectable no or nc operation and are not damaged by over-ranging flow velocities. modeldescription tds112thermal dispersion flow switch, pp/pps wetted parts, 3.0" (7.6 cm) length. tds122thermal dispersion flow switch, pp/pps wetted parts, 4.5" (11.4 cm) length. tds212thermal dispersion flow switch, pvdf wetted parts, 3.0" (7.6 cm) length. tds222thermal dispersion flow switch, pvdf wetted parts, 4.5" (11.4 cm) length. specifications service:liquids. wetted materials:polypropylene/pps or polyvinylidene fluoride.range: range: 0.04 to 10 fps (1.2x10-2 to 3.05 m/s) temperature limits:32 to 140°f (0 to 60°c). pressure limits:150 psi (10 bar) @ 77°f (25°c), derated @ 1.667 psi (.113 bar) per °c above 25°c. repeatability:±5% of setpoint. switch type:spdt. electrical rating:60 vac/60 vdc @ 1 a. electrical connections:22 awg 3-wire, 10 ft (3 m) length. process connections:3/4" male npt. mounting orientation:any orientation, for pipe sizes 3/4" to 1-1/2" use 3.0" (7.6 cm) length switch; for 2" to 16" pipe sizes use 4.5" (11.4 cm) length switch. setpoint adjustment:0.04 to 3 fps (1.2x10-2 to .91 m/s). setpoint drift:0.5% of setpoint. response time:1-10 seconds. viscosity range:1 to 200 centipoise. supply voltage:12 to 36 vdc. consumption:50 ma (nominal). indication:led for flow status. weight:3 oz (94 g). agency approvals:ce. related products series sfi-800 sight flow indicator/transmitter
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Thermal Dispersion Flow Switch
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Pantech Instruments, an eminent manufacturer of process control instruments since last 15 years, has developed this type of meter by their indigenous R&D efforts. The flow meter is definitely a state of technology product, totally in line with all the industrial and gas standards. The thermal sensor uses the principle of heat dissipation. A heated sensor is inserted into the stream of gas flow. The cooling effect of the gas is measured, transduced and interpreted as flow. The cooling effect is a direct function of the heat transfer that takes place due to the flow of gas. The heat transfer in turn is a direct function of the velocity as well as density of the process gas. Hence variations in temperature and pressure in the process gas are automatically compensated. For all practical purposes the output signal obtained is pressure and temperature compensated “massflow” signal. Thus the compensated flow independent of pressure and temperature variation is indicated without need for any separate transducers for the same.
Thermal Dispersion Flow Switch
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The Thermal Flow Switch Monitor SP-150 is based on the principle of thermal dispersion. A typical configuration uses two Temperature Detectors set within the tip of the sensor. One Temperature Detector is heated a few degrees above the other one. As the process medium flows over the tip of the sensor it disperses some of the heat from the heated Temperature Detector. The delta temperature is a function of flow velocity and converted into electronic signal. The open collector changes state once the set point has been reached.
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We are engaged in offering Thermostat Switches. The Thermostat Switches are engineered for many years of use. We are Supplier of Girishego Thermostats without Fixing Bracket that are ideal for temperature control of Space Heater, which is used in LT & HT Switchgear & Panel Boards, etc. Principle Of Operation : With temperature rise, the principle of differential expansion of brass tube and a Nickel/Iron (inver) Rod is used to actuate a highly accurate snap action micro gap switch located in the head which makes it keep the temperature constant within the differential i.e. A single pole, single throw, normally closed circuit breaks (opens) on rise of temperature. Construction Of Thermostat Switches The micro gap switch assembly is mounted on a heat resistant base, with rigid brass pillar terminals. Heavy duty Ag CDO contacts are provided for long trouble free life. A thermosetting cover with clear and precise graduations is provided along with a setting knob. Thermostat can be fixed in any position. Two fixing holes of Dia. 5mm are provided at a center distance of 58mm in Thermostat with fixing Bracket model. Availability : These Thermostat Switches are available in standard stem lengths of 7"(175mm), 11" (275mm). Also Available in 110 V & 415
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Thermal Dispersion Flow Switch
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The Series TDS Thermal Dispersion Flow Switch offers solid state flow detection of non-coating liquids for pump and process protection. SPDT output allows for interfacing with remote PLC or relay control device. The adjustable switch point is factory calibrated at 0.2 fps with LED indication of flow and calibration status. Units feature selectable NO or NC operation and are not damaged by over-ranging flow velocities.
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The general purpose gas flow switch is a great choice for a broad range of relatively clean gases with non-coating characteristics. Media examples include nitrogen and scrubber exhaust fumes. The 1A relay provides a reliable switch interface with remote devices such as a PLC, SCADA or alarm. The short sensor is intended for use in pipe or ducting from 12” to 1-12”; the long sensor is applied in 2” and up. The switch set point may be adjusted from 1 to 90 fps. The product is broadly selected for low or no-flow applications.
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