S
SWOFFER INSTRUMENTS INC.
Swoffer Instruments, Inc has been manufacturing water velocity related instruments since 1959. Beginning then with the first electronically operated sailboat speedometer and continuing to expand into open channel velocity measurement. The Model 2100 instrument was introduced in 1980 and has been one of the most reliable water current measuring instruments in the US. The newest addition is a data logging flow meter - the Model 3000 . The basic principle of the Swoffer fiber-optic sensor is simple and unique: Multiple bundles of fiber-optics, assembled into a propeller driven rotor, gate a beam of infrared light from a photo diode to a photo-sensitive transistor producing electronic pulses. These pulses, generated by the propeller rotor over a precisely measured amount of time, are directly proportional to water velocity. The electronic half of the sensor is the latest opto-electronics and is epoxy encapsulated in a " (12.7mm) diameter acetal resin housing for protection from chemicals and the elements. It can be purchased separately and attached to and used with many in-water devices in addition to those offered by Swoffer. The sensor uses a two-wire signal system requiring only 3 volts for operation and can generate an output signal through over 1000 feet of cable. The rotating portion of the sensor consists of a very low friction fiber-optics rotor rotating around a polished & hardened stainless steel shaft, all driven by a glass-reinforced nylon propeller. All rotor parts are easily replaceable in the field and spares are provided with every new instrument.
Country/Area ：United States
Industry ：ElectronicsManufacturing GeneralManufacturing
Company address ：13704 24th St E Ste 108, Sumner, Washington, 98390, United States
Company website ：*****
Company phone ：(253) 661-8706
Established ：1975
Company Revenue ：$1,951,000
Number of employees ：<25
SIC Code ：38382
NAICS Code ：33334
Main Products ：USGS Retrofit |Brochures |Prices/ Ordering Information |Carrying Cases |Operation Manuals ]
Web Summary
Q1: What year did Swoffer Instruments Inc. start manufacturing water velocity-related instruments?
A1: Swoffer Instruments Inc. has been manufacturing water velocity-related instruments since 1959.
Q2: What was the first electronically operated sailboat speedometer introduced by Swoffer Instruments Inc. in 1980?
A2: The Model 2100 instrument was introduced in 1980 and has been one of the most reliable water current measuring instruments in the US.
Q3: What is the basic principle of the Swoffer fiber-optic sensor?
A3: The basic principle of the Swoffer fiber-optic sensor is simple and unique: Multiple bundles of fiber-optics, assembled into a propeller-driven rotor, gate a beam of infrared light from a photo diode to a photo-sensitive transistor producing electronic pulses.
Q4: What type of measurement does the Model 3000 Current Velocity Meter-Flow Meter provide?
A4: The Model 3000 Current Velocity Meter-Flow Meter provides both current velocity and flow measurements, allowing users to record depths, widths, velocities, flow angles, time/date ("stations"), and discharge data.
Q5: What is the maximum length of the sensor cable supplied with the Swoffer Model 2100 Current Velocity Meter?
A5: The sensor cable supplied with the Swoffer Model 2100 Current Velocity Meter is 25 feet in length.
Q6: How many "stations" can the Model 3000 Current Velocity Meter-Flow Meter hold in memory?
A6: The Model 3000 Current Velocity Meter-Flow Meter holds 1000 "stations" in up to 100 cross sections for later upload to a PC.
Q7: What is the classification of Swoffer's wands, and what are their main uses?
A7: Swoffer's wands are classified into three categories: Combination, Top Set Wading, and Telescoping. They are designed for measuring flows in faster, deeper water, as well as for use in side sewers, streams, waterways, and channels.
Q8: What is the typical length of a Telescoping wand supplied with Swoffer's current meters?
A8: The typical length of a Telescoping wand supplied with Swoffer's current meters is 12 feet (3.6 meters), although shorter lengths are also available.
A1: Swoffer Instruments Inc. has been manufacturing water velocity-related instruments since 1959.
Q2: What was the first electronically operated sailboat speedometer introduced by Swoffer Instruments Inc. in 1980?
A2: The Model 2100 instrument was introduced in 1980 and has been one of the most reliable water current measuring instruments in the US.
Q3: What is the basic principle of the Swoffer fiber-optic sensor?
A3: The basic principle of the Swoffer fiber-optic sensor is simple and unique: Multiple bundles of fiber-optics, assembled into a propeller-driven rotor, gate a beam of infrared light from a photo diode to a photo-sensitive transistor producing electronic pulses.
Q4: What type of measurement does the Model 3000 Current Velocity Meter-Flow Meter provide?
A4: The Model 3000 Current Velocity Meter-Flow Meter provides both current velocity and flow measurements, allowing users to record depths, widths, velocities, flow angles, time/date ("stations"), and discharge data.
Q5: What is the maximum length of the sensor cable supplied with the Swoffer Model 2100 Current Velocity Meter?
A5: The sensor cable supplied with the Swoffer Model 2100 Current Velocity Meter is 25 feet in length.
Q6: How many "stations" can the Model 3000 Current Velocity Meter-Flow Meter hold in memory?
A6: The Model 3000 Current Velocity Meter-Flow Meter holds 1000 "stations" in up to 100 cross sections for later upload to a PC.
Q7: What is the classification of Swoffer's wands, and what are their main uses?
A7: Swoffer's wands are classified into three categories: Combination, Top Set Wading, and Telescoping. They are designed for measuring flows in faster, deeper water, as well as for use in side sewers, streams, waterways, and channels.
Q8: What is the typical length of a Telescoping wand supplied with Swoffer's current meters?
A8: The typical length of a Telescoping wand supplied with Swoffer's current meters is 12 feet (3.6 meters), although shorter lengths are also available.
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