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Data Sheet | Instruction Manual
Testo 735-1 Professional Multichannel Temperature Standard Instrument
The Testo 735-1 digital multichannel thermometer is a high-precision reference instrument designed for universal thermal verification and the calibration of static temperature sensors. This versatile architecture features 3 hard-wired reference connection points—including 1 high-tier Pt100 interface and 2 fast thermocouple slots (supporting Type K, T, J, and S elements)—and can expand via an optional wireless radio module to receive readings from 3 additional radio probes, forming a complete 6-channel measuring array. Utilizing high-precision optional immersion/penetration probes, the system achieves an industry-leading system accuracy of up to 0.05 °C with an ultra-fine resolution of 0.001 °C, making it an elite choice as a working laboratory standard for chemical laboratories, HVAC cabinets, and food processing quality audits.
Industrial & Laboratory Applications
- Metrology & Sensor Calibration: Operating as a secondary reference master to test and calibrate built-in plant thermistors and structural field probes.
- Chemical & Cosmetics Laboratories: Highly detailed monitoring of temperature-critical substance testing and aggressive fluid validation cycles.
- Food & Cold Chain Audit: Rigorous HACCP-compliant and EN 13485-certified testing inside critical cold stores, distribution centers, and production plants.
Technical Characteristics
| Sensor Input Architecture | 3 physical inputs (1x Pt100 + 2x TC Type K/T/J/S) plus 3 optional wireless channels (up to 20 m range) |
| Pt100 Measuring Range | -200 to +800 °C |
| Thermocouple Type K Scale | Broad industrial deployment from -200 up to +1370 °C |
| Thermocouple Type S Scale | Ultra-high thermal baseline reaching up to +1760 °C |
| Peak System Accuracy Matrix | High-tier precision of up to 0.05 °C (when utilizing digital Pt100 reference probes) |
| Differential Data Processing | Real-time automatic calculation and display of differential temperature (delta T) |
| Hardware Ingress Rating | Certified IP65 waterproof structure against industrial washing cycles |
| Official Quality Norms | Fully HACCP International certified; compliant with DIN EN 13485 guidelines |
| On-Site Documentation | Cyclical and instant printing via the optional wireless testo fast printer |
| Housing Material & Build | Robust ABS / TPE / Metal configuration; weight: 428 g; dimensions: 220 x 74 x 46 mm |
Package Contents
- Testo 735-1 multi-channel professional digital thermometer module
- Standard AA micro batteries for immediate outfield tool launch
- Official factory calibration protocol validation verification documentation