Key facts
- Manuals
- 43
- Models
- 1
- Languages
- ZH · EN · DE · JA
- Last added
- 2026-10-03
testo models by category
Featured testo manuals
Testo 830-S1 / 830-T1 / 830-T2 Infrared Thermometer Operation Manual
The Testo 830‑S1, 830‑T1 and 830‑T2 are handheld infrared thermometers for non‑contact surface temperature measurement, with the 830‑T2 also supporting contact measurement via an external probe. The manual explains the intended use, safety precautions and technical specifications of the devices.
The manual is organized into general information, product description, safety instructions, intended use, technical data, initial operation, regular operation, settings, maintenance, FAQ, and detailed explanations of infrared and contact measurement methods. It also includes warranty and service information for Chinese customers. This manual is written in Chinese.
Covers: General Description · Product Description · Safety Instructions · Intended Use · Technical Data · Initial Operation
Testo 875 Infrared Thermal Imager Product Leaflet
The Testo 875 infrared thermal imager is designed for electrical system maintenance and fault detection. It helps identify poor contacts, aging components, and overloads before they cause costly downtime or fire hazards.
Key features include a 160×120 infrared detector, optional Super‑pixel upgrade to 320×240, high thermal sensitivity (<0.08 °C), selectable temperature ranges, and a 3.5" high‑resolution LCD display. The device supports both wide‑angle and long‑focus lenses for flexible measurement distances. This manual is written in Chinese.
Covers: Application Overview · Performance Advantages · Measurement Solutions · Product Features · Technical Specifications
Testo 535 CO2 Measurement Instrument User Manual
The Testo 535 is a handheld CO₂ measurement instrument. This user manual explains how to power on the device, run the self‑test, handle the probe, and use the measurement functions such as start/stop, averaging and pressure compensation.
It also lists the technical specifications, battery replacement, printing of readings, error messages and the supplied accessories, helping users operate and maintain the instrument safely and accurately. This manual is written in Chinese.
Covers: Operation · Technical Data · Instrument Configuration · Error Messages · Accessories · Print Output
Testo 521/526 Pressure Meter User Manual
This manual provides safety instructions, device description and step‑by‑step operating procedures for the Testo 521 and 526 pressure measurement instruments. It also details calibration methods, data logging functions and maintenance guidelines.
The document includes a full table of contents, wiring diagrams, battery specifications, RS‑232 communication details and a comprehensive list of part numbers for accessories and spare parts. This manual is written in Chinese.
Covers: Introduction · Safety Information · Operation · Calibration · Data Logging · Power Supply
Latest testo manuals
Testo 830-S1 / 830-T1 / 830-T2 Infrared Thermometer Operation Manual
User Manual 20 pages · 633 KB · ZHThe Testo 830 series infrared thermometers operation manual provides safety instructions, technical data, setup, operation, and maintenance guidance.
Testo 875 Infrared Thermal Imager Product Leaflet
Product Leaflet 2 pages · 1.6 MB · ZHThe Testo 875 infrared thermal imager offers 160×120 resolution and <0.08 °C sensitivity for electrical system maintenance.
Testo 535 CO2 Measurement Instrument User Manual
User Manual 8 pages · 667 KB · ZHThe manual provides operation instructions, technical specifications, settings, error handling and accessory information for the Testo 535 CO₂ meter.
Testo 521/526 Pressure Meter User Manual
User Manual 52 pages · 1.6 MB · ZHUser manual for Testo 521 and 526 pressure meters covering safety, operation, calibration and data logging.
Testo 885 Thermal Imager Datasheet
Datasheet 4 pages · 411 KB · ENThe Testo 885 thermal imager offers high‑resolution infrared imaging, super‑resolution, and temperature measurement up to 1200 °C.
TESTO 410-2 Committing to the future
testo 810 is a measuring instrument produced by testo, which can measure air temperature, surface temperature, humidity, etc.
Testo 350 Plus Strength Type Smoke Gas Analyzer User Manual
User Manual 26 pages · 503 KB · ENThe Testo 350 Plus Strength Type Smoke Gas Analyzer User Manual provides operating instructions, measurement ranges, and maintenance guidelines.
Testo 335 Smoke Gas Analyzer Manual
User Manual 60 pages · 711 KB · ENUser manual for the Testo 335 smoke gas analyzer providing operation and safety information.
Testo 177-T2 Electronic Temperature Recorder Operation Manual
User Manual 2 pages · 388 KB · ZHThe Testo 177-T2 electronic temperature recorder operation manual provides safety instructions, specifications, and step‑by‑step usage guidance.
Testo 175-T3 Quick Start Guide
Quick Start Guide 2 pages · 521 KB · DEShort operating instructions for the Testo 175‑T3 temperature logger, covering display, safety, and technical data.
Testo 405-V1 Thermal Wind Speed Instrument User Manual
User Manual 1 pages · 201 KB · ZHThe Testo 405-V1 manual provides operating, calibration, and maintenance instructions for the thermal wind speed instrument.
Testo 435 Multi-function Measuring Instrument User Manual
User Manual 32 pages · 498 KB · ZHThe Testo 435 manual provides safety guidelines, setup steps, operation instructions, and technical specifications for this multi‑function measuring instrument.
Testo Flash Update User Manual
User Manual 9 pages · 154 KB · JAThis manual explains how to use the Testo Flash Update software to update firmware on various Testo measurement devices.
testo 175‑S1 Data Logger User Manual
User Manual 1 pages · 430 KB · ZHThe testo 175‑S1 data logger user manual provides operation, safety, and technical specifications for the device.
Testo 175-H1 Quick Start Guide
Quick Start Guide 1 pages · 643 KB · ZHA concise user guide for the Testo 175-H1 temperature and humidity meter, covering basic operation, alerts, and safety instructions.
Which document do I need?
User Manual
Day-to-day operation, settings and troubleshooting. Start here if the product is already set up.
Datasheet
Ratings, dimensions and ordering codes, for selection and design work.
Quick Start Guide
The shortest path to a working setup, usually only a few pages.
Questions answered in testo manuals
How long does the battery last?
The battery provides up to 20 hours of operation (some models list 15 hours).
From: Testo 830-S1 / 830-T1 / 830-T2 Infrared Thermometer Operation Manual
What is the infrared measurement range?
The infrared sensor measures temperatures from –30 °C to +400 °C.
From: Testo 830-S1 / 830-T1 / 830-T2 Infrared Thermometer Operation Manual
What temperature ranges can the Testo 875 measure?
It can measure from –20 °C to +100 °C, or from 0 °C to +280 °C when switched.
What infrared pixel resolution does the standard Testo 875 provide?
The standard detector resolution is 160 × 120 pixels, with an optional upgrade to 320 × 240 pixels.
How long does the instrument take to perform self‑test and heat the sensor before it can be used?
After turning on, the instrument runs a self‑test and heats the sensor for about 30 seconds before operation.
What does the “Bat” symbol on the display indicate?
It means the battery power will be insufficient for less than one hour and the instrument will automatically shut off.