Showing recent results 1 - 11 of 11 products found.
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Electro-Optical Products Corp.
Tuning fork choppers are the most reliable choppers. They have an infinite lifetime. They can work in high temperature, ultra high vacuum and cryogenic environments. Tuning fork choppers are used for chopping light, plasma, X-ray and laser light.
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Hinds Instruments, Inc.
The Optical Choppers offered by Hinds Instruments are resonant devices designed to work at one frequency. We offer two ways to chop light: a High Speed Optical Chopper (HSOC) and a Photoelastic Modulator (or PEM).
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Ametek Scientific Instruments
Signal Recovery offers fully enclosed optical head light choppers. The sync inputs are ideal for external referencing with the lock-in amplifiers. They can perform up to frequencies of 3 kHz.
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Electro-Optical Products Corp.
An external clock signal, to provide an ultra stable modulating optical beam motion [sub] system. The system can be used as a "stand alone" unit, in the laboratory, or can be incorporated into a larger instrument/system. The chopper is ONE FIXED FREQUENCY, picked from the range of 5 Hz to 20 kHz. The chopper is a small size, light weigh, low cost and long life device. It requires low power drive electronics and does not radiate electromagnetic interference (EMI). It has high frequency stability and high amplitude stability. The chopper is IR, VIS and UV and high vacuum capable. Reference signal and position output available.
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RM9-THz - Ophir Photonics
The RM9-THz radiometer is a sensor for measuring the power of very low level CW or quasi CW lasers and light sources. This sensor was specially designed for work in the terahertz range. The RM9-THz uses a pyroelectric sensor and lock-in amplifier with an 18Hz chopper (not included, use RMC1 or other chopper). The power range of the RM9-THz is from 100nW to 100mW, it has an 8mm aperture and covers the spectral range from 0.7THz to 10THz.
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McPherson, Inc.
Reflective condensing system and focusing accessory for coupling light sources to monochromators. It uses two mirrors to focus to the entrance slit. The reflective system eliminates chromatic aberration, provides maximum spectral range, and does not require refocusing. Accessories like light choppers and filter wheels can also fit inside next to the slit. Versions with rotatable mirror available for up to four source direction.
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Bentham Instruments Ltd
Our detection electronics portfolio comprises all the detection electronics elements required for the operation and automation of a high quality light measurement system, including photo-detector signal recovery and digitisation (with fully programmable DC, AC and lock-in amplifiers having current/ voltage inputs), high voltage supply, optical chopper control, detector thermoelectric cooler control and relay unit.
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Bentham Instruments Ltd
Our detection electronics portfolio comprises all the detection electronics elements required for the operation and automation of a high quality light measurement system, including photo-detector signal recovery and digitisation (with fully programmable DC, AC and lock-in amplifiers having current/ voltage inputs), high voltage supply, optical chopper control, detector thermoelectric cooler control and relay unit.
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PFM-711A - Prostat Corporation
A hand held, compact, electronic digital chopper field meter used for locating and measuring electrostatic fields.Use alone to measure fields on defined surfaces and materials. Red "Bulls Eye" ranging lights assist in obtaining reproducible measurements.Use with CPM-720A Charge Plate Assembly and PCS-730 Charging Source to balance and test ionization blowers and devices. May be used to measure charge generation related to personnel, floors, chairs, carts, equipment, packaging materials, etc.
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PFK-101 - Prostat Corporation
The battery-operated PFM-711A Field Meter is a compact electronic "chopper" design with accuracy of ± 2% at ambient conditions (23ºC and 30% Rh). It features automatic polarity, measurement "Hold" button, low-battery indicator, high and low ranges, distance ranging lights for accurate and repeatable measurements, manual zero control and a ground snap. With two supplied analog output cables, it can be used in conjunction with an X-Y plotter, the PDT-740B Static Decay Timer or any analog data recording device.
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S2001 - Statico
The S2001 is designed to locate and measure static charge potentials on product, people, equipment and packaging. The instrument uses a non-contacting, chopper stabilized field sensor and a ranging light mechanism to ensure correct measurements of electrostatic fields in all areas- even those using air ionization. The Fieldmeter is easily zeroed with the turn of a small knob and does not require re-zeroing between measurements. Powered by a 9 Volt battery, the S2001 features a conductive case and a convenient snap-on ground lead to facilitate grounding and increase accuracy. NIST Certified.
