News

Jelight Company, Inc. of Irvine, CA has acquired a United States Patent for their JFC-412 series of Portable Ultraviolet Floor Curing Equipment.

Curious about the UV floor curing process? Here is our newest demo video to show you how it all works.

We have just released our newest portable UV floor curing unit, the JFC-417L.  The JFC-417L provides a cure width ranging from 17-21"-- great for use on larger area UV floor cure jobs in the wood and VCT industries! 

 

Meters to measure Intensity of UV light source

 

Meters to measure ultraviolet light. Our portable handheld instrument units are battery operated, lightweight and different types of probes can be purchased separately to meet specific measuring application.

 

UV meter JX11

The JX11 is universally applicable meter for photometric, radiometric and luminous color quantities in combination with the appropriate probe heads. USB interface equipped. The JX11 can be operated with several detector heads. In order for the meter to display the measured values in absolute quantities, the meter must be 'told' which probe is connected to it. The calibration correction data of the probe ordered together with the meter is stored in the meter at the factory. The menu mode (see section 1.8) is used to select the correct factor in the JX11. If the probe was calibrated with removable accessories, the appropriate calibration for the detector head with the selected accessory must be activated. If the detector head calibration includes a data table of its wavelength dependent sensitivity, the wavelength to be measured must be selected.
handheld uv meter
Features:
Display-LCD graphic display (97 x 32 pixel); 4 rows each 14 characters; LED background illumination with on/off switch Manual calibration - Input through USB interface; permanent storage in eeprom. Interface - USB Spec. 1.1 (HID device)

UV meter specifications:

CW (continuous measuring); Color x/y (color temperature, x,y chromaticity coordinates, Y) Color u/v (color temperature, u,v chromaticity coordinates, Y), USB Measuring - Sampling A/D converter (1 ms sample rate). Average reading processing time (integration) from 20 ms to 1 sec
Electrical specifications:
Detector connection - Detector heads with 4 type connector (9 pin MSDM9 socket, 4 signal inputs) Power - 2 x battery, size AA (2.2 to 3.2 V); current consumption: 6 mA + 30 mA for display illumination; USB powered in remote control mode. Input Ranges 4 channels, each with 6 ranges (-LS: 2.0.00 to 200.0 pA; -HS: 200.0 to 2.000 nA); automatic range switching
Mechanical specifications:
Dimmension/weight - 145 x 63 x 30 mm / 150 g (5.7 x 2.5 x 1.2 in / 0.33 lb)

UV meter JP9710


The JP9710 UV meter is an efficient single-channel instrument designed for multipurpose use in any photometric and radiometric application. In spite of its compact size it offers many high-level features with sixteen different measurement modes. These functions and portability enable the P-9710 to be characterized as both a laboratory grade instrument and a field service meter. A special feature of the P-9710 is its detector head calibration data coupler. All data pertaining to a detector including the model and serial number are stored in the coupler. When connected to the optometer, this data is automatically transmitted and the system is ready to go. This guarantees faultless handling of the instrument when used with any number of different sensing heads. The JP9710's wide measurement range of 0.1 pA to 2 mA covers the dynamic range of most current semiconductor photodiodes for nearly unrestricted use in any light measurement application. The relative accuracy throughout this range is = 0.2 %. Another key feature of the JP9710 is its adjustable integrating time which allows it to function as a fast data logger with a short sampling rate. The JP9710 can measure both instantaneous signal and accumulated energy (dose). The unit's many functional modes of operation are selected using a clearly built-up menu accessed using the front panel buttons. A bi-directional RS232 serial interface al-lows external remote control. Optional Windows based software is available for a quick turn-key solution or user can write his own program using the complete command set supplied. Factory programmed calibration factors can be changed with the OS CAL software. This allows calibration labs and industrial processes employing in-house calibration standards to self calibrate the unit with one or multiple factors.

ultraviolet meter

Features:


CW: Reading (minus any offset) and detector calibration factor is shown on the upper line of the display. The lower line shows the wavelength / identification of the detector. CW Min/Max: Shows the smallest / largest CW value during a measurement period (erased by pressing 'reset' button). Peak Min/Max: Shows the smallest / largest value within the selected measurement time (corresponding to the integration time selected). Peak to Peak: The difference between min. peak and peak max within the selected measurement time (corresponding to the integration time selected). 1- Effective: Evaluation of the effective intensity of pulsed light signals according to the Schmidt-Clausen method. Requires input of the time constant C for daylight observation (0.1 s) and night time observation (0.2 s). Pulse-Energy: Measures the magnitude of single pulses (time integral). Manual or remote-controlled triggering of the time frame adjustable up to a maximum of six seconds. Offset compensation setting of static ambient light. Ratio relative(%): Displays reading in reference to a pre-set value in percent. Attenuation (logarithm): Displays reading in reference to a pre-set or reference value in dB or dBm. Ratio (factor): Displays reading as a factor of a preset value. Hold: Current reading is 'frozen' by pressing 'stop' button. Readings resume by pressing 'run'. CW Level Check: Checks the measured CW value against stored preset lower and upper limit values. Display indicates whether value is within, above or below limits. Useful in remote control applications (RS232) and in combination with the optional I/O relay board. Dose (C): Totals the measured values and displays result as a dose reading. Logger (x): Stores the measured values at preset chronological times (sampling rate). Remote (RS232): Allows remote control of the device using a PC. Default Ini: Resets all parameters to the default condition.

UV meter specifications:


Dose Measurement-Integration of the measurement signal with 1 s sampling rate. Adjustable max. measurement time from 1 s to 1000 h. Adjustable maximum dose limit value. Current status display function.

Electrical specifications:


Detector Input-Photocurrent to voltage converter signal input amplifier with 8 gain levels (2.000 mA to 200.0 pA max. gain values). Manual or automatic range switching. 12 bit ADC with up to 14 bits at longer integration times. Detector Connection-Storage of sensor data (serial number, detector model, calibration data) in Eeprom of the detector head coupler. Automatic data transfer when detector is connected to the meter. Calibration factors for detectors with and without accessory can be stored in a table for detectors calibrated over any number of different wavelengths. Manual input and storage of a calibration value into the meter. Storage of up to 12,288 readings. Adjustable sampling rate from 0.1 to 6000 seconds. Manual recording mode. Display of readings stored in the flash EPROMS on the display or on computer using the RS232 interface and software. Power Supply-Battery or AC operation. Built-in rechargeable battery, 6V, 0.5 Ah. Approx. 6 h with display illumination. Battery charge under 8 % is displayed. Operation from AC plug-in power supply (230V/50Hz, other values on request) with specific U/l e-charging characteristic.

Mechanical specifications:


Dimensions/Weight195 x 100 x 40 mm / 500 g (7.7 x 3.9 x 1.6 in /1.1 Ib)

 

 

UV meter JL390B

(discontinued)


The JL390B is intended for on-line production environment exposure integration measurements. One button control and direct readout in milliJoules/cm2 allow accurate measurements to be made by non-technical personnel. The JL290 offers these same features, with a spectral responsivity in the deep ultraviolet for short wavelength curing processes. The low profile (12.7 mm high) of the “Light Bug” design makes it small enough to fit in almost all ultraviolet curing ovens, and has been ruggedly designed to withstand this hostile environment as well as the abuse associated with conveyor delivery system.

light bug meter

Features:


Slim, compact design.

UV meter specifications:

Type: S-5 Vacuum Photodiode Dynamic Range: 0.1 to 20000 J/cm2, 2.5 W/cm2 max Spectral Range: 250 to 400 nm (10 %) JL290 �Light Bug"

Electrical specifications:

 

Mechanical specifications:


Dimmensions 110mm X 160mm X 12mm (4.3" X 6.3" X 0.5")

 

UV meter JL1700


The JL1700 is a very sophisticated microprocessor based, computer controlled current and conductance uv meter that maintains 0.1 percent linearity over most of its extremely wide dynamic range. This current reading range spans from less than 0.3 pico amperes to 2 ma with 3 digit resolution, allowing a spectral range of 190 nm to 3.5 microns with unmatched resolution, accuracy, and reliability. The JL1700 is capable of auto-ranging in the D.C. direct measurement mode as well as in the integration mode over the entire 9 decade range. The automatic zeroing feature is complemented by the ability to set a 100 percent value for simple measurements in percentages of the measured maximum and for differential (percent change) measurements. Multiple input power selection, computer interface, analog recorder output, and remote computer control are all standard features. These versatile features allow the JL1700 to be used in numerous applications. To accommodate demanding operating environments, this model can be operated within a temperature range of 0 to 40 degrees Celsius or even greater ranges with the remote detectors. The JL1700 maintains complete compatibility with a multitude of detectors, attenuators, filters, and diffusers.

scientific uv light meter

Features:


DYNAMIC RANGE OF 10 DECADES 10 FACTOR REGISTERS (CONSTANT MEMORY) DIRECT READING IN ANY OPTICAL UNITS LIGHT INTEGRATION, MICROSECONDS TO 18 YEARS REMOTE CONTROL OF INTEGRATE FUNCTIONS DARKROOM HOLD READING FEATURE SELECTABLE REVERSE BIAS (0 OR 5 VOLTS) 115/230 VAC, 8-15 VDC, AND BATTERY POWER BUILT IN Ni-Cad BATTERY RECHARGER ANALOG RECORDER OUTPUT (0-1 VOLT) RS232 PLUS TTL DIGITAL OUTPUTS AUTOMATIC ZEROING AUTOMATIC 100 PERCENT

UV meter specifications:


Dynamic Range: Nine decades, from 1x10'12 W/cm2 to over 1 W/cm2. Spectral Range: From 190 nm to 3.5 microns.

Electrical specifications:


Input Power: 90-130/180-240 VAC, 50-400HZ, 6 'C' cells or 8-15 VDC. Signal Current: Over 9 decades of overlapping current measurement from 2x10-" to 2x10-3 amperes. Input Impedance: Virtual ground (summing node of operational amplifier). Linearity: �0.1% �1 digit. Recorder Output: 408 ohm impedance, 1 volt full scale, current limited 0.5 second update.

Mechanical specifications:


Size: 9 cm Height x 22 cm Width x 24 cm Depth (3.5" x 8.7" x 9.4"). Weight: 2.3 Kg (5.1 Ibs).

 

UV meter JL1400


The JL1400A utilizes the latest state-of-the-art micro processing to reduce confusion of uv light measuring units. The operating buttons are simple with all essential functions under microprocessor control. The user-friendly JL1400A opens up new applications in the health hazard, environmental, and photo therapy fields, while its technical sophistication still lends itself to industrial research and development applications. The JL1400A UV meter provides automatic ranging over seven decades. This model also offers exposure integration for periods up to 24 hours, which are required for controlling light sensitive exposure processes. For time variation studies and for data processing capabilities, the unit is equipped with an output port for connection to a data logger or to a computer. The JL1400A offers improved cosine spatial response for full immersion applications. An array of detectors are available for the ultraviolet, visible, and infrared spectra. Low profile probes for photo resist, UV curing, and other exposure applications are also available.

radiometer for UV measurement

Features:


Smart detector determined processing direct reading in any optical units light integration, seconds to 24 hours darkroom hold reading feature user friendly alpha-numeric display simple operating buttons hand held - completely portable battery operated analog recorder output(0-1 VOLT) optional TTL serial computer interface automatic zeroing

UV meter specifications:


Dynamic Range: Seven decades, from 1x10-9 W/cm2 to over 1 W/cm2. Spectral Range: From 190 nm to 3.5 microns.

Electrical specifications:


Input Power: 4 AA alkaline batteries. Signal Current: Over 7 decades of overlapping current measuring from 1x10-10 to 350x10-6 amperes. Input Impedance: Virtual ground (summing node of operational amplifier). Linearity: 0.2 digit. Recorder Output: 408 ohm impedance, 1 volt full scale, current limited 1/2 second update.

Mechanical specifications:


Size: 185 mm Height x 100 mm Width x 43 mm Depth (7.3" x 3.9" x 1.7").<\b> Weight: 555 9 (1.2 Ibs).

PROBES FOR UV METER ULTRA PORTABLE JX SERIES

UV DETECTOR HEADS FOR UV METER JL SERIES