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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