Independent supplier of temperature, pressure, process and electrical calibration instruments for marine, labs, plants and workshops. Tell me what you need to calibrate — I’ll match the model, send the datasheet and quote.
Temperature, pressure, process and electrical calibration — the range covers the laboratory bench and the field, from dry blocks and thermostatic baths to pressure kits and multifunction process calibrators.
Temperature — dry blocks, thermostatic baths, reference thermometers
Organised by the job — on board ship, or in the calibration lab.
01 Marine Calibration
Portable calibration for engine-room and deck instruments — temperature, pressure and process signals, sized for surveyor checks and class surveys.
Temperature: dry block calibrators (ET2502-650) for checking RTDs, thermocouples and thermometers on main and auxiliary engines
Pressure: ETYP Series calibrator kit — pneumatic comparison pump with a precision digital reference gauge — for pressure transmitters and gauges
Loops & signals: multifunction process calibrators that measure and source mA, voltage, TC, RTD and frequency signals for 4–20 mA loops, transmitters and alarm systems
Core models — filter by field. Datasheets and prices are quoted per enquiry.
ET2520N ULTRA-LOW DRY BLOCK
ET2520N Series
Ultra-Low Temperature Dry Block Calibrator
Ultra-low dry block calibrator reaching −100 °C, for calibrating RTDs, thermocouples and temperature transmitters in cold-chain, refrigeration, pharmaceutical and low-temperature process work.
Models: ET2520-N100: −100 … 50 °C · ET2520-N80: −80 … 50 °CAccuracy: ±0.25 °C · resolution: 0.001 °CStability: ±0.01 °C / 10 min (typical)Block: Ø30 mm · depth 160 mmDisplay: 6.2″ colour TFT touch screenPower: 350 W · 110 / 220 VACSize & weight: 330 × 200 × 470 mm · 17 kg
Calibration Instruments
ET2520 SERIES DRY BLOCK
ET2520 Series
Dry Block Temperature Calibrators
Dry block calibrators for workshop and laboratory temperature calibration — refrigerated models for sub-zero work down to −45 °C and a high-temperature model reaching 1210 °C, with full-touch colour displays and replaceable blocks.
Refrigerated: ET2520-160A −25 … 160 °C · 160B −35 … 160 °C · 160C −45 … 160 °C · ET2520-180A −20 … 180 °C · 180B −30 … 180 °CRefrigerated accuracy: ±0.1 °CHigh temperature: ET2520-1210A: 300 … 1210 °C · accuracy ±1.2 °C · block Ø28 mm / 150 mmET2520-660: 35 … 660 °C · accuracy ±0.35 °C (50–400 °C) / ±0.5 °C (400–660 °C) · stability ±0.05 °C / 10 min · block holes 3 × Ø8 mmET2520-1200B: 100 … 1210 °C · accuracy ±1.2 °C · stability ±0.1 °C / 10 min · block holes Ø6 / Ø8 / Ø10 mmBlock holes (refrigerated models): standard 4 holes (Ø4 / Ø6 / Ø8 / Ø10 or Ø6 / Ø8 / Ø10 / Ø12 mm by model) · custom drilling 3–15 mmDisplay: 6.2″ colour LCD, full touchBlocks: replaceable, custom-drilled inserts availableResolution: 0.01 / 0.001 °CSize & weight: 330 × 170 × 320 mm · 8.5 kg
Calibration Instruments
ET3520T SERIES INTELLIGENT DRY BLOCK
ET3520T Series
Intelligent Dry Block Temperature Calibrator
Intelligent portable dry block calibrator with built-in electrical measurement — a stable temperature field from −45 °C to 1210 °C plus standard and multifunction measurement channels, for automatic calibration of temperature sensors and HART transmitters.
Range: −45 … 1210 °C across the seriesRefrigerated: 160A −25 … 160 °C · 180A −25 … 180 °C · 160B −35 … 160 °C · 180B −35 … 180 °C · 160C −45 … 160 °C — accuracy ±0.1 °C · stability ±0.005 °C / 10 minET3520T-660: 50 … 660 °C · ±0.35 °C (≤400 °C) / ±0.5 °C (>400 °C)ET3520T-1210: 100 … 1210 °C · ±1.2 °CDisplay: 6.2″ colour touch screen · resolution 0.001 °CElectrical measurement: standard RTD / TC channel + 2 multifunction channels (mA / mV / V / Ω / RTD / TC) · 24 V loop power · HART transmitter calibration (CH1) · temperature switch testAutomatic calibration: manages up to 120 devices under test · 120 records · certificate exportInterfaces: USB Device / Host · Ethernet (LAN) · Wi-FiSize & weight: 330 × 190 × 360 mm · 9.2–10.7 kg
Calibration Instruments
ET3520S SERIES SMART DRY BLOCK
ET3520S Series
Smart Dry Block Temperature Calibrator
Smart portable dry block calibrator with the same temperature-field line-up as the T series — a stable field from −45 °C to 1210 °C, control by an external reference thermometer and automatic stability detection, in a lightweight design for field and laboratory calibration.
Range: −45 … 1210 °C across the seriesRefrigerated: 160A −25 … 160 °C · 180A −25 … 180 °C · 160B −35 … 160 °C · 180B −35 … 180 °C · 160C −45 … 160 °C — accuracy ±0.1 °C · stability ±0.005 °C / 10 minET3520S-660: 50 … 660 °C · ±0.35 °C (≤400 °C) / ±0.5 °C (>400 °C)ET3520S-1210: 100 … 1210 °C · ±1.2 °CDisplay: 6.2″ touch screenControl: external reference sensor (standard thermometer) control · automatic stability detection with audible & visual promptMeasurement channels: standard 2 channels (thermocouple & RTD) + 3 channels under testSensor support: 13 thermocouple types (S / R / K / B / N / E / J / T / C / D / G / L / U) · RTD Pt10–Pt1000, Cu & Ni types · temperature switch test (mechanical & electronic) · temperature transmitter (current & voltage) calibrationInterfaces: USB · LAN · Wi-FiDesign: portable, lightweight construction for field calibration
Calibration Instruments
ET2504 SERIES INTELLIGENT DRY BLOCK
ET2504 Series
Intelligent Dry Block Temperature Calibrators
Intelligent dry block calibrators with a standard channel plus two channels under test — measure the sensor being calibrated while the block holds temperature, with temperature switch and transmitter support for lab and field calibration.
ET2504-150B: −30 … 150 °C · accuracy ≤ ±0.1 °C · block holes Ø6 / Ø8 / Ø8 / Ø10 mmET2504-150A: −20 … 150 °C · accuracy ≤ ±0.1 °C · block holes Ø6 / Ø8 / Ø10 / Ø12 mmET2504-650: 35 … 650 °C · accuracy ≤ ±0.35 °C (≤400 °C) / ≤ ±0.5 °C (400–650 °C)ET2504-1200: 300 … 1200 °C · accuracy ±1.2 °CStability: ≤ ±0.02 °C · display: touch screenChannels: standard channel + 2 channels under test · 13 thermocouple types (S / R / K / B / N / E / J / T / C / D / G / L / U) · RTD Pt / Cu / Ni typesFunctions: temperature switch test (mechanical & electronic) · temperature transmitter (current & voltage) calibrationBlock holes: custom drilling 3–15 mm available
Calibration Instruments
ET2501 SERIES TOUCH-SCREEN DRY BLOCK
ET2501 Series
Touch-Screen Dry Block Temperature Calibrators
Touch-screen dry block calibrators for laboratory and field temperature calibration, from sub-zero refrigerated models to a 1200 °C high-temperature model, with replaceable drilled blocks.
Precision standard thermostatic baths for calibration laboratories — refrigerated baths down to −100 °C and a 300 °C oil bath, with fluctuation and uniformity at the 0.01 °C level for thermometer and sensor calibration.
ET3871-100: −100 … 95 °C · workspace Ø130 × 480 mm · 5 kWET3871-80: −80 … 95 °C · workspace Ø140 × 480 mm · 4 kWET3871-40: −40 … 95 °C · workspace Ø140 × 480 mm · 2 kWET3871-10: −10 … 95 °C · workspace Ø140 × 480 mm · 2 kWET3871-300: 80 … 300 °C (oil) · workspace Ø140 × 480 mm · 3 kWFluctuation: ±0.01 °C / 10 min · uniformity: better than 0.01 °CMedium: soft water / anhydrous ethanol (refrigerated) · oil (300 type)
Calibration Instruments
ET3875 SERIES THERMOSTATIC BATH
ET3875 Series
Standard Thermostatic Baths — Compact
Compact, lightweight standard thermostatic baths with built-in liquid reservoir and automatic liquid dispensing — no external container needed and no spilling when moved. For thermometer calibration in labs and workshops.
ET3875-40E (new): −40 … 95 °C (or −40 … 150 °C) · fluctuation ±0.015 °C / 10 min · workspace Ø70 × 250 mm · 18 kgET3875-300E (new): 70 … 300 °C (oil) · workspace Ø60 × 250 mm · 15 kgET3875-40: −40 … 95 °C · fluctuation ±0.02 °C / 15 min · workspace Ø80 × 250 mmET3875-10: −40 … 95 °C · ET3875-0A: 0 … 95 °C · workspace Ø80 × 250 mmET3875-95: ambient +15 … 95 °C · ET3875-300: ambient +30 … 300 °C (oil)Uniformity: better than 0.02 °C across the series
Calibration Instruments
ET313X SERIES PRECISION THERMOMETER
ET313X Series
Precision Thermometers
Reference-grade precision thermometers for laboratory temperature measurement — RTD channels with 0.0001 °C resolution, connecting standard platinum resistance thermometers (SPRT25 / SPRT100); B versions add thermocouple measurement.
ET3131: single-channel RTD · ET3132: dual-channel RTDET3131B / ET3132B: RTD + thermocouple channelsRTD range: −200 … 800 °C · resolution 0.0001 °C · accuracy ±0.006 °C @ 0 °C (±0.04 °C @ −100 °C)Resistance: 0–1600 Ω · 2-wire / 4-wire · RTD 3-wire / 4-wireB versions — millivolt: −78 … +78 mV · TC range −250 … 2500 °C, resolution 0.001 °CConnects: SPRT25 / SPRT100 standard thermometers
Calibration Instruments
ET314X SERIES HANDHELD PRECISION THERMOMETER
ET314X Series
Handheld Precision Thermometers
Handheld precision thermometers for field and laboratory sensor checks — RTD measurement with 0.001 °C resolution; B versions add thermocouple measurement for a wider sensor range.
ET3141: single-channel RTD · ET3142: dual-channel RTDET3141B / ET3142B: RTD + thermocoupleRTD range: −200 … 800 °C · resolution 0.001 °C · accuracy ±0.025 °C @ 0 °C (±0.02 °C @ −100 °C)Resistance: 0–1600 Ω · 2-wire / 4-wire · RTD 3-wire / 4-wireB versions — millivolt: −78 … +78 mV · TC range −250 … 2500 °C, resolution 0.001 °CConnects: SPRT25 / SPRT100 standard thermometers
Calibration Instruments
Standard Platinum Resistance Thermometers
Standard Platinum Resistance Thermometers & Standard Thermocouple
Second-grade standard platinum resistance thermometers and a standard platinum-rhodium thermocouple — the reference sensors paired with precision thermometers and baths in calibration laboratories.
WZPB-9 SPRT: −189.3442 … 419.527 °C · grade II · Rtp25.5 Ω / 100 Ω · 4-wire, 2.5 m leads2866 SPRT: −189 … 661 °C · grade II · Rtp100 Ω · tube Ø6.35 × 520 mmWRPB-1 standard thermocouple: PtRh10–Pt · 300 … 1300 °C · electrode Ø0.5 mm × ≥1000 mmCustom temperature ranges available on the platinum resistance thermometers
Calibration Instruments
ET3860 SERIES DIGITAL THERMOMETER
ET3860 Series
Digital Thermometers
Precision digital thermometers used as working standards in the lab — B grade at ±0.05 °C and C grade at ±0.1 °C, with 0.001 °C display resolution and 16,000 readings of on-board storage.
ET3860B-180 / C-180: −60 … 180 °C · B ±0.05 °C · C ±0.1 °C · probe Ø6 × 50 mm, 316LET3860B-300 / C-300: −80 … 300 °C · B ±0.05 °C · C ±0.1 °C · probe Ø6 × 50 mm, 316LET3860B-200 / C-200: −40 … 200 °C · Pt100 cable probe Ø3 mm · resolution 0.01 °CDisplay resolution: 0.001 °C (probe versions) · data storage: 16,000 setsBattery: high-temperature lithium · weight: 210 g (probe versions)
Calibration Instruments
ET3917 / ET3916R TEMPERATURE RECORDER
ET3917 / ET3916R Series
Precision Temperature Recorders
Precision multi-channel temperature recorders for laboratory and process recording — thermocouple accuracy of 0.02 %FS and 0.001 °C display resolution across 6 to 48 channels.
ET3917: 6 / 12 / 18 / 24 / 36 / 48 channels · ET3916R: 6–48 channelsThermocouple accuracy: 0.02 %FS · RTD accuracy: 0.1 %FSDisplay resolution: 0.001 °CTC types: K / J / T / E / S / N / B / R / WRe3-25 / WRe5-26 · RTD: Pt1000 / Pt100 / Cu100 / Cu50Cold-junction compensation: ±0.5 °C · measuring speed: 0.2–1 s / channelStorage: 8G TF card · isolated alarm settings per channel
Calibration Instruments
MULTIMETER CALIBRATORS
ET-30G / ET-6505G / ET-7503
Multimeter Calibrators
Bench multimeter calibrators for verifying handheld and bench multimeters and electrical meters — from the ET-30G workshop standard to the ET-7503 with 20 ppm best DC accuracy, power and harmonic functions.
ET-30G: DC class 0.02 · AC class 0.03 (50/60 Hz) · voltage to 1000 V · current to 20 A · frequencies 50 / 60 / 400 Hz / 1 kHzET-6505G: DC voltage ±10 mV–1050 V · DC current ±3 µA–22 A · AC to 1100 V / 22 A · AC/DC power output · 6-digit displayET-7503: DC voltage best accuracy 20 ppm (±1100 V) · DC current 50 ppm (±30 A) · resistance 0–1000 MΩ · capacitance 1 nF–1100 µF · power & harmonic analysis, waveform display
Calibration Instruments
ET1625H PROCESS CALIBRATOR
ET1625H
Process Calibrator with HART
Handheld process calibrator with dual isolated channels and built-in HART communication — measure and source loop signals and configure HART transmitters with one instrument. (The ET1625 without the H suffix does not include HART.)
Channels: dual isolated channels · loop power: 24 V DCHART: built-in HART functionOutputs: voltage 100 mV / 1 V / 10 V · current 0–30 mA · resistance 0 / 500 / 5000 Ω · frequency 100 Hz / 1 kHz / 10 kHz · pulse 1–100,000 cyclesTC types: R / S / K / E / J / T / N / B / L / U / XK / WRe · RTD: Pt100 / Pt1000 / Pt200 / Pt500 / Cu / Ni typesDisplay: 3.5″ TFT LCD (480 × 320) · battery: 5000 mAh lithium, rechargeable
Calibration Instruments
ETYL SERIES PRESSURE PUMP
ETYL Series
Pressure Pumps
Bench and portable pressure pumps for pressure calibration — hydraulic pumps to 100 MPa and pneumatic pumps with 10 Pa fine adjustment, used with a reference gauge or pressure calibrator.
ETYL135: 0 … 100 MPa · medium: distilled water or oil · stability 0.02 %FS · min. adjustment 0.1 kPa · 3 output ports · 13 kgETYL146: −0.095 … 14 MPa · medium: air · adjustment accuracy 10 Pa · stability 0.01 %FS · 6.5 kgETYL142: 0 … 70 MPa · medium: water or oil · stability 0.05 %FS · 4.5 kgETYL141: −0.095 … 6 MPa · medium: air · min. adjustment 100 Pa · 3.0 kgConnections: M20×1.5
Calibration Instruments
ET-AY / ET-BY PRESSURE CALIBRATOR
ET-AY / ET-BY
Pressure Calibrators
Digital pressure calibrators covering −100 kPa to 60 MPa in four accuracy grades — for calibrating pressure transmitters, switches and gauges; the ET-AY adds a built-in HART function for transmitter setup.
Range: −100 kPa … 60 MPa · accuracy grades: 0.02 / 0.05 / 0.1 / 0.2Units: 12 — kPa, psi, inHg, inH₂O, mmHg, mmH₂O, MPa, bar, mbar, atm, kg/cm², PaET-AY: built-in HART — set transmitter range, force output current, linear / square-root setup, sensor zeroET-BY: temperature measurement 0 … 50 °C (±0.5 °C) · serial communicationDisplay: 2.8″ colour screen, 5-digit · Chinese / EnglishOverload alarm at 110 %FS · connection: M20×1.5 (customisable) · head Ø115 mm, total length 185 mm, approx. 0.5 kg
Calibration Instruments
ET251
Zero Thermostat
Zero-point thermostat providing a stable 0 °C-class reference environment for thermometer and sensor checks — fast cooling to zero and a deep 200 mm immersion for long probes.
Range: −5 … 20 °C · stability: ≤ ±0.02 °C / 15 minCooling: 25 °C → 0 °C in 15 min · immersion depth: 200 mmWells: 8 wells × Ø9 mm (standard) · display resolution: 0.01 / 0.001 °C selectable, 6-digitSize & weight: 300 × 190 × 330 mm · 13 kg
Calibration Instruments
ET385
Black Body Furnace
Black body radiation source for calibrating infrared thermometers and thermal imagers — high-emissivity cavity with tight stability and uniformity.
Effective emissivity: ≥ 0.99 · cavity diameter: Φ60 mmStability: ±0.1 °C / 10 min · uniformity: ≤ 0.15 °C · display resolution: 0.01 °CSize: 300 × 350 × 145 mm
Calibration Instruments
ET2502-650 CALIBRATOR3-HOLE HEATING BLOCK
ET2502-650IMPA 652505
Dry Block Temperature Calibrator
Portable dry block temperature calibrator for calibrating RTDs, thermocouples, thermometers and temperature switches in the laboratory or on site — one unit covering the working range of most industrial process sensors.
Range: 35 … 650 °CDisplay accuracy: ≤ ±0.35 °C (<400 °C) · ≤ ±0.5 °C (400–650 °C)Stability: ≤ ±0.05 °C · horizontal field: ≤ ±0.05 °CHeating: 7 min to 300 °C · 25 min to 650 °CBlock: Ø32 mm · depth 150 mm · 3 holes Ø8 / Ø10 / Ø12 mm, replaceableDisplay: 5.0″ TFT touch screen · resolution 0.01 °CPower: max 800 W · 220 VAC ±10% (110 V optional)Size & weight: 250 × 150 × 310 mm · 11 kg, aluminium alloy caseOptions: USB & switch test · traceable calibration certificate
Marine CalibrationCalibration Instruments
ET3804-150B
Compact Dry Block Calibrator
Compact dry block for low- and mid-range temperature sensor calibration — a practical engine-room and workshop unit for −30 °C to 150 °C work.
Range: −30 … 150 °C
Calibration Instruments
ET2520-1200B
High-Temperature Dry Block Calibrator
High-temperature dry block for calibrating thermocouples and furnace sensors at the top end of the industrial range.
Complete pressure calibration kit: a lever-driven pneumatic comparison pump paired with a precision digital reference gauge. Used together with a pressure standard, it calibrates and tests pressure instruments — for metrology, research, industrial plants and instrument manufacturing.
Split-screen, dual-display multifunction process calibrator with IP67 protection — built for commissioning and calibrating process instruments on board vessels and at industrial sites. Upper screen measures, lower screen measures and sources at the same time.
Accuracy: ±0.02 % (ET2725A) · ±0.05 % (ET2725B)Measure: DC 0–60 V · 0–24 mA with loop power · resistance 0–3200 ΩSource: DC 0–10 V · 0–24 mA · RTD, TC, frequency, resistanceFrequency: measure 1 Hz–100 kHz · source up to 20 kHzRTD: Pt100 / Pt1000 / Cu50 / Cu100 · TC: E / J / K / T / B / R / S / N, auto cold-junction compensationFunctions: manual / auto step & ramp · 220 V terminal misconnection protectionOption: APSL intelligent pressure modules for pressure measurementSize & weight: 200 × 96 × 47 mm · 650 g · IP67 · 6× AAA Ni-MH or adapter · RS232
Handheld process calibrators that measure and source the signals a loop technician works with — current, voltage and temperature signals for transmitter and loop calibration. A-grade and B-grade versions.
ET2725A accuracy: 0.02 % classET2725B accuracy: 0.05 % class
Calibration Instruments
ET1615
Process Calibrator
Handheld process calibrator for everyday loop maintenance and signal checks in plants and workshops.
Use: loop measure & source
Calibration InstrumentsAutomation
Signal Source Series
Signal Generators & Simulators
Signal generators and loop simulators for commissioning and troubleshooting: simulate sensor and transmitter outputs to test control loops, alarms and indicators without process shutdown.
Use: loop simulation & commissioning
Calibration Instruments
HART475
HART Field Communicator
Handheld HART communicator for configuring, diagnosing and commissioning HART field devices — transmitters, valves and instruments on process and marine installations.
Protocol: HART
Calibration Instruments
ET30B
Multimeter Calibrator
Bench calibrator for verifying handheld and bench multimeters — DC and AC voltage and current outputs at selectable line frequencies.
DC accuracy: class 0.1 · AC: class 0.2Output frequencies: 50 / 60 / 400 Hz
Calibration InstrumentsMeasurement
ET3916 Series
Multi-Channel Data Loggers
Multi-channel data loggers — including the ET3916-08 — for recording temperature and process values over time: cold-chain checks, sea-trial documentation and test reports.
Channels: 8–64 (ET3916-08 / -16 / -24 / -32 / -48 / -64 and T versions)Accuracy: 0.05 %FS · measurement range: 60 mVDisplay resolution: 0.1 °C standard · 0.01 °C on T versionsTC types: K / J / T / E / S / N / B / R · cold-junction compensation: ±0.5 °CData storage: 8G · isolated alarm settings (upper-upper / upper / lower / lower-lower)
Calibration Instruments
ZX79F HIGH-RESISTANCE DECADE BOX
ZX79F / Accessories
Decade Resistance Boxes & Calibration Coils
High-resistance decade boxes (ZX79F) for insulation and high-resistance calibration work, and calibration coils for verifying clamp meters and current measurement chains.
Includes: ZX79F high-resistance box
Calibration Instruments
ZX119-10K MEGOHMMETER VERIFICATION DEVICE
ZX119-10K
Megohmmeter Verification Device
High-resistance verification device for checking megohmmeters and insulation testers — decade resistance steps with graded accuracy up to the 10 GΩ range, plus fixed high-value resistors for high-voltage checks.
No instruments in this field yet — ask by email or WhatsApp and I will check availability.
How enquiries work
Quoted individually — so model, options and freight fit your port or plant.
STEP 1
Send the model or the job
Email or WhatsApp the model number — or just describe what you need to calibrate, the range and where it will be used.
STEP 2
Get the datasheet & quotation
You receive the full datasheet, available options, price and lead time. Questions on accuracy, inserts or accessories are answered before you decide.
STEP 3
Confirm & arrange delivery
Confirm the order details directly by email or WhatsApp and delivery is arranged to your address or your vessel's next port of call.
An independent supplier, not a marketplace listing
Personally run supply desk — one person from first question to delivery, no call centre. Practical instruments for marine teams, labs, plants and workshops, checked model by model.
Datasheets and honest specification checks before quoting
Model matching by application — temperature, pressure, process, electrical
Enquiries answered personally, typically within one working day
English communication by email and WhatsApp
Contact
Reach out by email or WhatsApp — whichever is easier. Contact: Kate Liu.