Temperature Control:
PTD 175

Wide-range Peltier device: -45 °C to +175 °C
No cooling liquids: Clean, safe, and maintenance-free
Full control via ViscoQC for streamlined operation
T-Ready™ feature signals sample temperature equilibration
Complies with ASTM D2983, ASTM D4402, AASHTO T316, and more

PTD 175

Key features
Specifications
Standards
Documents
Compatible instruments
Similar products

PTD 175 delivers fast, precise temperature control from -45 °C to +175 °C, enabling rapid temperature changes and quicker measurement readiness. Its solid-state Peltier technology provides clean, safe, and maintenance-free operation without leaks or downtime. Fully controlled via ViscoQC, temperature control is embedded directly into the measuring method for automated, repeatable workflows. The T-Ready™ feature confirms complete sample temperature equilibration before testing, ensuring accurate results. PTD 175 is ideal for demanding research and applications where frequent temperature changes would otherwise limit sample throughput.

Key features

Fully automated alignment with ASTM D2983

PTD 175 enables fully automated ASTM D2983 testing without the safety risks, timing constraints, and manual effort of traditional cooling baths. Coolant-free Peltier temperature control eliminates toxic and flammable liquids that require high maintenance efforts. Each test can run at any time, as no manual handling is required, maximizing utilization and throughput. Guided automated temperature calibration via ViscoQC ensures budget-friendly long-term accuracy and compliance.

Fully automated: Press start, collect results
No toxic coolants, no maintenance
Automated temperature calibration (requires MKT 10 or 50)
Requires: ViscoQC 300 L, 4B2 measuring system, V-Curve

Three-quarter front view of the ViscoQC 300 rotational viscometer with the PTD 175 Peltier temperature device, shown with oil bottles, a beaker of amber liquid, and accessories on a light blue background

ASTM D4402: Fully automated, high throughput

PTD 175 combined with ViscoQC 300 enables automated bitumen testing. The pre-configured ASTM D4402 method supports automatic speed recognition and up to three temperatures per run, reducing operator effort. Automated multi-point temperature calibration and adjustment at up to 20 temperatures ensures maximum accuracy and eliminates audit risk. Fast Peltier heating and cooling enables rapid temperature changes and significantly higher throughput than electrical chambers. For temperatures up to +300 °C, ETD 300 is required.

Push-button ASTM D4402 and AASHTO T316 tests
Automated multi-temperature calibration, 100 % audit-ready
Fast heating and cooling for high throughput

Three-quarter front view of the ViscoQC 300 rotational viscometer with the PTD 175 Peltier temperature device, shown with grease tins and a petri-dish sample on a light blue background

Full temperature confidence

The unique T-Ready™ feature confirms when the sample has truly reached the set temperature, ensuring all measurements are performed under identical thermal conditions. Full ViscoQC control embeds temperature settings directly into the measuring method, streamlining operation, and minimizing manual interaction. Unlike conventional circulator baths, PTD 175 uses solid-state Peltier technology instead of cooling liquids, eliminating leaks and routine fluid maintenance.

T-Ready™ ensures testing at the exact set temperature
Full temperature and test control via ViscoQC
No bath or thermostat fluid required, no maintenance

Angled close-up of the ViscoQC 300 touchscreen as a gloved finger taps Start, showing a gear oil test with spindle type 4B2 and PTD 175 temperature at −40.0 °C on a light blue background

From QC to advanced temperature ramps

PTD 175 supports flexible temperature-driven viscosity testing to match both routine QC and advanced analysis needs. Users can run QC measurements at a fixed set temperature, perform automated temperature scans at predefined temperature points, or execute temperature ramps with continuous viscosity measurement between two temperatures. For temperature ramps, the temperature change rate can be precisely defined, allowing controlled, reproducible studies of temperature-dependent viscosity behavior.

Fixed-temperature QC tests
Automated temperature scans at defined setpoints
Controlled temperature ramps with defined rates

Angled close-up of the ViscoQC 300 touchscreen as a gloved finger taps Measured Data, showing a bitumen SC4-21 viscosity graph on a light blue lab background

Specifications

Temperature range [°C]	-45 to +175
Temperature stability [°C]	±0.1
Supported viscometers	ViscoQC 300
Supported measuring systems	Concentric cylinders (DIN), double-gap, ultra-low viscosity adapter, small sample adapter, insulated 4B2, L1D22
Cooling liquid	No
Thermal management	Active heating and cooling
External power supply	Yes