New Products
                    • TES-3145 / TES-3145U

                      Anemometer

                      • Air flow volume
                      • Instant/Avg/2/3 V max flow measurement
                      • Velocity m/s, f t/min
                      • Temperature, Humidity & Atmospheric measurement
                      • Calculate Dew point temperature, Wet bulb
                        temperature, Wind chill temperature, Humidex
                        temperature and Heat index temperature.
                      • Data hold & Maximum/Minimum/Average function
                      • Manual data memory and read function: 99 sets
                      • Auto data memory: 4GB microSD card (3145U)
                      • USB interface (3145U)
                    • TES-1389 / TES-1389U

                      BRIX METER

                      • Wide measuring range (Brix 0 ~ 53%)
                      • Refractive index measurement
                      • Temperature measurement
                      • Ambient temperature compensation
                      • Friendly operation and easy to use
                      • Wide and dual display LCD
                      • Reliable water resistant (IP65)
                      • Data memory and read function
                      • Auto data logger function (1389U)
                      • USB Interface (1389U)
                    • TES-3196

                      AC/DC Gauss Meter

                      • Use a uniaxial Hall effect transverse probe with automatic temperature compensation
                      • User select Gauss, Tesla or Ampere/Meter readings
                      • DC Zero function & AC Trms measurement
                      • Data Hold & Maximum/Minimum record function
                      • Relative & Alarm High/Low limit function
                      • X, Y and Z axis vector summing function
                      • LCD backlight & auto power off function
                      • Manual memory stores up to 99 data

                        APPLICATIONS
                      • DC magnetic field meter measuring static magnetic strength
                      • AC magnetic field meter measuring the wave motion of the electromagnetic field (EMF)
                      • After machine component are processed, remain the magnetism to measurement
                      • Magnetic force measurement of the magnetisable material
                      • Magnetic application products, the intensity of magnetic field measurement
                      • Electrical home appliances products, the magnetic field intensity measurement of the motor
                      • Exceed the leakage magnetic field of conducting the magnetite to measure
                      • Magnetic field intensity measurement of the permanent magnet
                      • Various steel products brought magnetic measurement naturally
                    • TES-3142 / TES-3142U

                      Pitot Tube Anemometer & Differential Pressure Manometer

                      • Air flow volume
                      • Differential pressure, Stagnation pressure and
                        Static pressure measurement
                      • Instant/Avg/ 2/3 V max flow measurement
                      • Velocity m/s, f t/min
                      • Temperature, Humidity & Atmospheric measurement
                      • Calculate Dew point temperature, Wet bulb
                        temperature, Wind chill temperature, Humidex
                        temperature and Heat index temperature.
                      • Data hold & Maximum / Minimum / Average function
                      • Manual data memory and read function: 99 sets
                      • Auto data memory: 4GB microSD card (3142U)
                      • USB interface (3142U)
                    • TES-1386/TES-1386U

                      TURBIDITY METER

                      • Water Quality Testing
                      • Test Tap Water
                      • Food and Beverage water
                      • Other related water quality testing
                      • Auto-ranging from 0 to 1000 NTU (Nephelometric Turbidity Unit)
                      • Waterproof and dustproof with IP65-rated housing that floats
                      • Meets performance criteria as specified by ISO 7027
                        (DIN EN 27027) method
                      • Low battery alarm and auto shut off after 10 minutes of non use
                      • Large LCD display and backlight function
                      • Four point calibration for full-range accuracy
                      • Maximum/minimum, alarm and relative function
                      • Manual data memory and read function
                      • Auto data logger function (1387)
                      • USB interface (1387)
                    • PROVA 136

                      Temperature Calibrator (RTD + TC)

                      • High precision and combination of RTD and Thermocouple (TC) calibration
                      • Source and measure 14 types of RTD and resistance
                      • Source and measure 11 types of thermocouples (TC)
                      • 4W, 3W, and 2W connections for RTD simulation and measurement
                      • Current calibration of 4 fixed values (100μA, 250μA, 1mA, and 2mA)
                      • ℃ and ℉ selectable
                      • Accept wide range of excitation current (0.05mA to 5mA) for RTD simulation
                      • Individual cold junction compensation (CJC) for simulation and measurement of thermocouples. CJC can be used to fine tune temperature calibration.
                      • Easy 0% and 100% setup and operation
                      • Easy 25%▲ (up) and 25▼ (down) for temperature calibration.
                      • Individual memory of 0% and 100% setup for different RTD types and thermocouple types
                      • Auto step and auto ramp for easy linear calibration
                      • Detection of too low or too high excitation current (LO or HI) from the measurement device
                      • Warning of exceeding calibrator driving current (IEX)
                      • Memory of last setup when power off
                      • Easy numerical keypad for input
                      • Dot Matrix LCD with backlight
                      • Very low power consumption of 30mA with backlight off
                      • 15 minutes smart auto-power-off. 15 minutes timer resets itself when any input changes
                      • 2 minutes smart auto-backlight-off. 2 minutes timer resets itself when any input changes
                    • PROVA - A9

                      AC/DC TRMS Mini Clamp Meter

                      • Accurate AC/DC digital clamp meter
                      • Best accuracy ±1.5%±3dgts
                      • AC 1mA, DC 10mA high resolution
                      • True RMS measurement
                      • One touch zero (Δ) for DCA adjustment
                      • 25 mm diameter jaws
                      • Fast bar graph display (30 times/sec.) for transient observation
                      • In-Rush Current Measurement with 100mS integration time
                      • Non-Contact Frequency Measurement (min. sensitivity 0.06 AC A)
                      • Non-Contact Voltage (NCV) Detection from 80V to 600V at 50/60Hz
                      • Low Pass Filter (LPF) at 1 KHz Cut-off Frequency
                      • Large 3 3/4 digits LCD
                      • Data Hold function
                      • 15 minutes auto-power-off with beeping warning before turning off
                      • Backlight with 5 minutes of auto-backlight-off
                      • Easy single rotary switch for any function selection
                      • Ideal for works in crowded switch box or cable areas
                    • SP-500

                      Integrating Sphere

                      • 500mm internal sphere (includes a lamp holder, baffles, and ports for photometers)
                      • Light weight and easy move
                        APPLICATIONS:
                      • As a light collector
                      • As uniform light source
                      • Luminance/Radiance calibration
                      • Reflectance measurement (Color measurement Fluorescence spectroscopy)
                      • Beam Power measurement (total power of a beam of optical radiation)
                      • Lamp Flue measurement (total geometric luminous flux of a light source)
                      • Laser Power measurement
                      • IR Reflectance measurement
                      • Irradiance measurement (Laser, LED, and Halogen lamps)
                    • PROVA-135

                      4-20mA Loop Calibrator + Thermometer

                      • Source 4~20mA, 0~24mA with 1μA resolution (1KΩ load, 24V loop supply), basic accuracy 0.025%.
                      • Source 0~24.000V with 1mV resolution.
                      • Source frequency 1~20000Hz square wave with programmable duty cycle (1~99%).
                      • Auto step and auto ramp for sourcing mA, V.
                      • Easy fixed 25% up and down, or programmable percentage (1~99%) increase and decrease (mA, V).
                      • Measure DC mA with loop power (24V output).
                      • Measure DC V.
                      • Measure Temperature (°C, °F) of 11 types of thermocouples (K, J, E, T, R, S, N, L, U, B and C).
                      • Calibrator grade precision temperature measurement with 0.1*C & 0.1*F resolution.
                      • Detection of thermocouples disconnection.
                      • Source and Measure at the same time.
                      • Warning for overload, output open (mA) or short (V).
                      • Short circuit protection for output.
                      • Battery power indication (%) when turn on the calibrator.

                        Applications:
                      • Calibration of 4~20mA panel meters.
                      • LED brightness testing (0~24mA).
                      • Temperature calibration of panel meters or instruments for 11 types of thermocouples.
                    • PROVA - A11

                      mA AC/DC Clamp Meter

                      • Very high resolution DC 1mA, AC 0.1mA.
                      • AC/DC (mA, A) current measurement: 6A / 60A.
                      • AC/DC (V) voltage measurement: 60V / 600V.
                      • AC current measurement: TRMS.
                      • Resistance, Continuity, Capacitance, Diode and Temperature (℃/℉) measurement.
                      • Voltage/Current Peak value measurement.
                      • 6000 counts
                      • Auto and Manual ranges for AC mA, AC/DC V, Resistance and Capacitance.
                      • One Touch Zero for DCA adjustment.
                      • 25mm large jaw diameter.
                      • Auto-power-off function (30 min.) and Backlight.
                      • Delta ( ) functions w.r.t. hold value.
                      • Dual display: Hold + Ave, Max + Min,ΔMax +ΔMin.
                      • Dual display (peak hold): Hold + Ave, Peak Max + Peak Min,ΔPeak Max +ΔPeak Min.
                      • Low Pass Filter (LPF, 1KHz, -3dB) (e.g. for VFD measurement)
                      • 600V overload protection for Resistance and Capacitance measurement.
                      • Ideal for works in crowded switch box or cable areas.
                    • TES-3079M

                      HVAC Trms Clamp Meter (1000A)

                      • 10 in 1 multifunction clamp meter
                      • Voltage, Current, Power, Horse power, Reactive power, Apparent power, Phase angle, Frequency, Power factor, Phase sequence, Temperature, Resistance, Capacitance, Diode
                      • Trms reading/Dual display/Auto power off
                    • TES-2950

                      LCR Trms Multimeter

                      • Variable-frequency drive (VFD) V & Hz measurement.
                      • Data hold, Auto hold & Peak hold mode.
                      • Max/Min/Avg record mode.
                      • Relative value display.
                      • Frequency Count (Auto-Ranging).
                      • Temperature type K, J measurement.
                      • Inductance & Capacitance measurement.
                      • 20MHz TTL logic check.
                    • TES-1162

                      Thermo / Hygro / Barometer

                      • 1.8%RH high Accuracy Humidity measurement
                      • Triple LCD displays Barometric pressure,
                        Temperature, and Relative humidity
                      • Absolute humidity, Mixing ratio and Enthalpy reading
                      • Water vapor pressure and Water saturation pressure reading
                      • Pressure trend and tendency (P3h) reading
                      • Heat Index and Humidex reading
                    • TES-1337B

                      Lux Intensity Meter

                      • Application:Street Lighting,tummel lighting,etc.
                      • Luminous intensity(cd)=Lux x Distance2
                      • Spectral correction factor function (include LED)
                      • User calibration function (CAL)
                      • Dual Display, 4-digit LCD reading.
                      • Spectral Sensitivity close to CIE photopic Curve.
                      • Measuring Levels Ranging 0.01 to 200.0 Klux, 0.001 to 20.00 Kfc,
                        Autoranging 5 step.
                      • Accurate and Instant response.
                      • Luminous intensity measurement.
                      • Data Hold function.
                      • Data memory and read function.
                      • Point - average function.
                      • Auto power off function.
                    • PROVA-A1/PROVA-A3

                      DC/AC Clamp Meter

                      • Five kinds of Dual display:
                        Hold + Average
                        Max + Min
                        ΔMax + ΔMin
                        Peak Max + Peak Min
                        Δ Peak Max + Δ Peak Min
                      • With Backlight
                      • Auto Range: V, A, Resistance, Capacitance and Temperature.
                      • Auto-Power-off function (30 min)
                      • Ideal for works in crowded switch box or cable areas
                    • TES-3100

                      VIBRATION METER

                      • Measures acceleration, Velocity and displacement
                      • RMS, EQ PEAK and EQ P-P measurement
                      • Wide range of vibration measurement by using different sensitivity of accelerometers
                      • Maximum/Minimum record function
                      • Earphone output for detecting noise in machine components
                      • Manual memory stores up to 99 data

                    • TES-660A /TES-660

                      Micro Noise Dosimeter (Badge Type)

                      • No Mic. Extension Cable required.
                      • Lightweight and small size
                      • Rechargeable battery
                      • Calculates all the popular noise dose parameters ? Wide dynamic range from 70 to a full 140dB
                      • Measures simultaneously 3dB, 4dB, 5dB or 6dB exchange rates
                      • Intrinsically safe (660A)
                    • TES-3013 / TES-3014

                      Digital Clamp Meter

                      • Category: CAT II 1000V , CAT III 600V
                      • Capacitance measurement 2000μF.
                      • Variable-frequency drive VFD voltage & Current measurement.
                      • ACA: 600A (3013), 1000A (3014)
                      • Peak / Data Hold.
                      • Frequency Count / Diode Check.
                      • Continuity Buzzer.
                    • TES-1339P

                      Photosynthesis Light Quantum Meter

                      • Autoranging 5 steps and conversion to μmole/m2/s (PPFD: Photosynthetic Photon Flux Density).
                      • Integral illuminance measurement and conversion to mole/m2/d (Daily light integral).
                      • Luminous intensity measurement.
                      • Point - average function.
                      • User calibration factor (CAL) and spectral correction factor (SCF) function. (include LED)
                      • Time-hold function.
                      • Dual Display, 4 digit LCD reading.
                      • Spectral Sensitivity close to CIE photopic Curve.
                      • Accurate and Instant response.
                      • Data Hold function.
                      • Data memory and read function.
                      • Reference value stored for relative or
                        percentage deviation measurement.
                      • Ripple measurement for STRAY + LIGHT function.
                      • Comparator function.
                      • Auto power off function.
                      • Auto datalogging & USB interface.
                    • PROVA 1660

                      Transformer Turns Ratio Meter

                      • Measurements of 1Φand 3ΦTransformer/VT/CT Turns Ratio.
                      • VT/PT ratio 0.8~10000, CT ratio 0.8~2000.
                      • Graphical and Literal Illustration of Measurements and Connections with Large Back-lighted Dot Matrix 240 x 128 LCD. Display Test Data with Nameplate Transformer Values for Easy Interpretation.
                      • Ten Test Frequencies (50~400Hz).
                      • Display Turns Ratio, Deviation, Secondary Output, Excitation Voltage and Current, Phase Angle and Nameplate Transformer/VT/CT Values in one page for easy transformer quality interpretation.
                      • Check for Live Test Points, Short Circuit, Open Circuit, and Reverse Polarity before Each Measurement. Message is displayed to Warn Users (But, checking is not performed once measurement starts).
                      • Store 4096 Files of Transformer Nameplate Values (VT/PT/CT, 1Φ/3Φ, Test Frequency, Primary and Secondary Voltages or Ratio, RCF) and Measuring Data.
                      • 9 types of 3Φ Windings Connections pre-installed for easy user selection.
                      • Wireless Blue Tooth Communication with PC.
                      • Select Filter to Remove Field Noise (Slow, Normal, Fast).
                      • Disable or Enable Auto-Power-Off with Programmable Time.
                      • Built-in calendar clock.
                        Records with Date and Time Stamp.
                      • Powerful Lithium Battery (3400mAH) with built-in Charging Circuit.
                      • User Programmable RCF (Reference Correction Factor, 0.99~1.01) to Correct Accuracy within 1% Error.
                      • Friendly File System for Easy On-site Data Retrieval and Nameplate Values Management.
                      • PC Application Software included.
                    • TES-3910

                      Trms Clamp Meter (DC/AC 1000A)

                      • Capacitance measurement 1000μF
                      • Variable-frequency drive (VFD) V & Hz measurement.
                      • Lo-Z voltage measurement to drain ghost voltages.
                      • Check 3Φ phase sequence.
                      • True RMS reading on AC and DC+AC mode.
                      • Inrush current measurement.
                      • A measurement for HVAC flame sensors.
                      • mV measurement range to interface with other accessories.
                      • Crest Factor & Harmonic ratio measurement.
                      • Data hold, Auto hold & Peak hold mode.
                      • Max/Min/Avg record mode.
                      • Data memory & read function.
                    • TES-1160 / TES-1161

                      Thermo / Hygro / Barometer

                      • Triple LCD displays Barometric pressure,
                        Temperature, and Relative humidity.
                      • Dew point and Wet bulb temperature reading.
                      • Absolute humidity, Mixing ratio and Enthalpy reading.
                      • Water vapor pressure and Water saturation pressure reading.
                      • Pressure trend and tendency (P3h) reading.
                      • Heat Index and Humidex reading.
                      • MAX/MIN with Time Stamp. ? Comparator function.
                      • Alarm output function.
                      • Auto power off function.
                      • Data Hold function.
                      • LCD backlight control function.
                      • Manual data memory and read function.
                      • Auto data logger function. (1161)
                      • USB Interface. (1161)
                    • TES-1150/TES-1151

                      Digital Sound Level Meter

                      • 0.1dB resolution.
                      • Range from 30 to 130dB.
                      • Maximum hold function.
                      • A, C, Z frequency weightings.
                      • A, C, Z peak hold function.
                      • Fast, Slow and Impulse dynamic characteristic models.
                      • AC/DC output jack.
                      • Back-screw for tripod fixture.
                      • Micro-USB (1151)
                      • Auto data memory microSD CARD 4GB. (1151)
                    • TES-2900

                      True RMS MULTIMETER

                      • Variable – frequency drive (VFD) V & Hz measurement.
                      • Lo – Z voltage measurement to drain ghost voltages.
                      • Check 3? phase sequence.
                      • Voltage harmonic ratio measurement.
                      • Smart ohm for ground resistance measurement.
                      • Data hold & Auto hold mode.
                      • Max/Min/Avg record mode.
                      • Relative value display.
                      • Frequecy count. (Auto-Range)
                      • Temperature type K, J measurement.
                      • Capacitance measurement.
                      • Data memory & read function.
                    • TES-5321 / TES-5322

                      PM2.5 Air Quality Monitor (read directly)

                      • Simple tool for air dust measurements (indoor)
                      • Direct reading field air pollution degree
                        No need for mobile phones to download data from cloud, no Internet Traffic problem,Easy use battery or AC adaptor to power the meter
                      • Accurate Temperature and Humidity measurements
                      • Mixed-gas VOCs(Volatile Organic Compounds) measurements,with high sensitivity to H2, C2H5OH,C4H10 and CH4 gas(TES-5322)
                      • PM2.5 MAX/MIN with time stamp function
                      • Health index(0-9) detection and alarm , six-color LED indication air quality index category

                        Application:
                      • Provide people with safety and health indoor environment
                      • Portable to monitor any environment air quality
                      • Investigate the effectiveness of different strategies to reduce particulates
                      • Air quality investigations
                    • TES-1358E

                      Sound Analyzer

                      • Compliant with IEC 61672-1 class 1 standard.
                      • Real-time 1/1-Octave and 1/3-Octave analysis.
                      • Measurement can be started by internal or external trigger.
                      • Comparator output to trigger external devices.
                      • Super high – contrast backlight TFT – LCD color display.
                      • Dynamic range of 90dB.
                      • AC and DC outputs.
                      • Data transfer using USB.
                      • micro SD CARD 4GB.
                    • TES-5200

                      Particle Mass Counter

                      • Particle mass & particle counter in a single handheld unit.
                      • Six mass ranges and eight particle sizes.
                      • User K-factors setting for special particulate with different densities.
                      • Integrated temperature / humidity sensor (no need for external add-on).
                      • Flow rate 2.83 L / minute (0.1 CF / minute).
                        ? Rechargeable battery provides up to 4 hours of continuous operation (charge time 2.5 hours).
                        ?Buffer function allows storing and redisplay of up to 500 measurement data sets.
                        ?SD storage device.
                    • TES-5110

                      Particle Counter

                      • Six particle size channels : 0.3μm, 0.5μm, 1.0μm, 2.0μm, 5.0μm, 10μm
                      • Integrated temperature / humidity sensor (no need for external add-on).
                      • Flow rate 2.83 L/minute (0.1 CF / minute).
                      • Rechargeable battery provides up to 4 hours of continuous operation (charge time 2.5 hours).
                      • Buffer function allows storing and redisplay of up to 500 measurement data sets.
                      • SD storage device.
                    • TES-1358C

                      Sound Analyzer Real Time 1/1 & 1/3 Octave band Analysis

                      • Super high – contrast backlight TFT – LCD color display.
                      • Compliant with IEC 61672-1 class 2 standard
                      • Real-time 1/1-Octave and 1/3-Octave analysis.
                      • Measurement can be started by internal or external trigger.
                      • Comparator output to trigger external devices.
                      • Data transfer using USB.
                      • Dynamic range of 90dB.
                      • Real time clock with calendar.
                      • AC and DC outputs.
                      • micro SD CARD 4GB.
                    • TES-137

                      Luminance Meter

                      • Dual Display, 4-digit LCD reading.
                      • Spectral Sensitivity close to CIE photopic Curve.
                      • Measuring Levels Ranging 0.001 to 1999k cd/m2, 0.001 to 580.0k fL, Autoranging 7 step.
                      • Accurate and Instant response.
                      • Luminance ratio A/B, deviation %A,different B-A and peak luminance measurements.
                      • User calibration factor and color-correction functions.
                      • Accumulation luminance measurement.
                      • Max/Min/AVG function.
                      • Backlit function.
                      • Comparator function.
                      • Data Hold function.
                      • Data memory and read function.
                      • Data logger function.
                      • USB Interface.
                    • TES-136

                      CHROMA METER

                      • Triple Display, 4-digit LCD reading.
                      • LED Color Bin select function (x,y) or (Tcp,Δuv).
                      • User calibration function.
                      • User reference value setting function.
                      • Illuminance maximum/minimum measurement function.
                      • Data Hold function.
                      • Data memory and read function.
                      • Data logger function.
                      • USB Interface.
                    • TES-3900/TES-3901

                      Clamp Meter/Trms Clamp Meter

                      • Variable-frequency drives (VFD) V & Hz measurement.
                      • LoZ voltage measurement to drain ghost voltages.
                      • Check 3? phase sequence.
                      • Motor Inrush current measurement.
                      • True RMS reading on AC and DC+AC mode. (3901)
                      • uA measurement for HVAC flame sensors. (3901)
                      • mV measurement range to interface with other accessories. (3901)
                      • Crest Factor & Harmonic ratio measurement. (3901)
                      • Data hold, Auto hold & Peak hold mode.
                      • Max/Min record mode.
                      • Data memory & read function.

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