P770 Multifunction Instrument for Temperature and Humidity

Thanks to its high reliability, the P770 is ideal as a reference instrument for calibrating secondary measuring devices in quality-assurance laboratories, as well as for process verification in situations where strict temperature control is critical.

The handheld instruments of the P700 Series, which include the P770, were designed to adapt to any process application, being especially suitable for scenarios requiring high accuracy or real-time documentation. The flexible configuration options and robust construction make them a versatile solution for technicians and engineers who need reliable results, whether in the laboratory or in the field.

The P770 is ideal for measurement operations in which high accuracy and real-time documentation are crucial. Through a USB interface, it is possible to use the optional DE-Graph software to graphically and tabularly document all recorded values. Additionally, the P770 incorporates an integrated calibration system, which allows any sensor deviations to be corrected easily, using a physical calibration at one, two, or three points, according to the user’s requirements.

The instrument also offers configurable measurement channels, allowing functions to be freely assigned and the recording of maximum, minimum, “hold,” and average values. Its ergonomic design includes an integrated sensor holder for one-handed operation, and it can be powered from mains electricity, ensuring versatility in different scenarios. The display allows simultaneous viewing of two measured values and includes a differential temperature indicator, providing an immediate reading of deviations between two measurement points.

Main Features

✅ USB Interface: Enables direct data transfer to a PC, facilitating report creation and subsequent analysis.
✅ DE-Graph Software for Windows (optional): Allows graphical and tabular documentation of measured values, with export to common formats (e.g., CSV or PDF).
✅ High Measurement Accuracy: Ensures uncertainties of only ±0.1 °C, making it suitable for reference tasks and rigorous monitoring.
✅ Integrated Calibration Function: Easily compensates for sensor tolerances through physical calibrations at 1, 2, or 3 points.
✅ Configurable Measurement Channels: Inputs can be freely assigned to temperature probes, humidity probes, or flow sensors, according to the user’s needs.
✅ Recording of Maximum, Minimum, Hold, and Average Values: Provides all essential functions for quick statistical analysis of collected data.
✅ Integrated Sensor Holder: Facilitates one-handed operation, ensuring greater convenience and stability during measurements.
✅ Mains Operation Available: Allows continuous bench-top use without relying exclusively on battery power.
✅ Simultaneous Display of Two Measured Values: Shows, for example, temperature and humidity at the same time, or two distinct temperature points, for easy comparison.
✅ Differential Temperature Display: Directly shows the difference between two temperature probes, eliminating manual calculations and speeding up decision-making in critical situations.

In short, the P770 offers a combination of reliability, flexibility, and usability that makes it indispensable for professionals who require meticulous measurements of temperature, humidity, and air flow. Whether to ensure the compliance of control systems on production lines, validate auxiliary sensors in calibration laboratories, or monitor sensitive industrial processes, this instrument rigorously meets the highest quality requirements.

Technical Data – P770 Multifunction Instrument

• Inputs:
  • 2 channels: compatible with Pt100 sensors, thermocouples (types K, J, L, N, R, S, T), humidity probes, dew-point probes, and air-flow probes.
• Measurement Ranges:
  • Pt100: –200 °C to +850 °C
  • Thermocouples (per DIN): –200 °C to +1760 °C
  • Resistance (Ohm): 0 to 400 Ω
  • Relative Humidity: 0 % to 100 % rH
  • Air Flow: 0 to 40 m/s
• Accuracy:
  • Pt100: ±0.1 °C between –100 °C and +200 °C; outside that range: ±0.1 % of reading
  • Thermocouples R, S: ±1.0 °C + 0.1 % of reading
  • Thermocouples K, J, L, N, T:
    • ±0.2 °C between 0 °C and +200 °C
    • ±0.5 °C up to +1000 °C
    • ±1.0 °C in the remaining range
  • Humidity: ±1.5 % rH
  • Air Flow: ±1 % of the final scale value
  • Resistance (Ohm): ±0.5 % of the measurement range
• Resolution: 0.1 °C or 0.1 % (depending on the measured parameter)
• Connectors: 8-pin DIN
• Operating Temperature: 0 °C to +40 °C
• Display: 2-line LCD
• Construction: Robust plastic housing
• Dimensions: 200 × 93 × 44 mm (W × H × D)
• Weight: 300 g
• Power Supply: 9 V battery
• Battery Life: Approximately 20 hours

Combination Probe – Stainless Steel (Temperature and Humidity)

This high-performance combination probe is engineered for accurate and simultaneous measurement of temperature and relative humidity. It features a durable stainless steel probe tube with a sintered filter tip, designed to withstand temperatures up to 140 °C.

Technical Specifications

• Type: Climate probe for temperature and humidity measurement
• Measurement Range:
  • Temperature: –30 °C to +85 °C
  • Humidity: 0% to 100% RH
• Accuracy Relativ humidity:
  • ±1,5% between 20 to 90% RH @ 23ºC (remaining ±3% RH)
• Accuracy Temperature:
  • ±0,2ºC between -30 to +65ºC
• Probe Material: Stainless steel tube with sintered protective cap
• Response Time (t90):
  • Humidity: approx. 3 seconds
  • Temperature: approx. 10 seconds
• Cable: PVC/PVC, 1000 mm length
• Dimensions (L × Ø): 230 × 12 mm

This robust, fast-responding sensor is ideal for demanding environments where reliable and precise climate monitoring is essential.