COMET U0541 – Data Logger with 2 x 0-10V Inputs (±10 mV) + 2 x Pt1000 Temperature Sensors

COMET U0541 – Compact data logger with 2× 0–10 V inputs (±10 mV) + 2× Pt1000 temperature (-200 to +260 °C, ±0.2 °C), 500,000-value memory, audible/visual alarm, LCD 

The COMET U0541 is a compact and robust 4‑channel data logger designed specifically for applications combining 2× voltage inputs (0–10 V) and 2× external Pt1000 temperature probes – the ideal solution for precise long‑term monitoring and recording in process control, machine monitoring, plant engineering, energy distribution, laboratories, climate chambers, or anywhere analog voltage signals (e.g. from sensors, controllers, actuators) and temperature need to be measured and recorded simultaneously. Featuring a large memory of 500,000 values (non‑cyclic) or 350,000 values (cyclic), freely selectable logging interval (1 s to 24 h), and a traceable calibration certificate (EN ISO/IEC 17025), it is perfect for quality management, audits, and long‑term monitoring tasks.

The two voltage inputs measure 0 to 10 V DC with ±10 mV accuracy and high input impedance (~130 kΩ). The two Pt1000 inputs measure temperature from −200 to +260 °C (±0.2 °C from −200 to +100 °C, ±0.2 % of reading above). The audible and visual alarms (buzzer + LED) provide an immediate warning when user‑defined limits are exceeded. Min/Max values are automatically recorded. The backlit LCD displays all channels simultaneously. The logger operates on a lithium 3.6 V AA battery – runtime of several years depending on interval settings. No power supply required – ideal for standalone installations. Supports non‑cyclic recording (stops when memory is full) or cyclic recording (overwrites oldest data). Includes real‑time clock with date/time stamp. Data transfer via USB‑C to PC using COMET Vision software.

The data logger is maintenance‑free, long‑term stable, and comes with a 3‑year warranty. The included traceable calibration certificate ensures highest measurement accuracy from the factory. Simple operation via buttons and clear menu navigation. Whether used as a standalone logger in installations, a portable instrument for service, or as part of an integrated process chain, the U0541 delivers precision, durability, and ease of use. The combination of voltage and temperature inputs makes it uniquely suited for hybrid measurement applications.

Why the COMET U0541 is the best 4‑channel data logger for voltage + Pt1000:

• 2× 0–10 V + 2× Pt1000 – ideal combination for process signals & temperature
• 500,000‑value memory – non‑cyclic or cyclic
• Freely adjustable recording interval – 1 s to 24 h
• Audible & visual alarm – instant alert on limit exceedance
• Min/Max memory – extreme values per channel
• Backlit LCD – simultaneous display of all channels
• Traceable calibration certificate included – EN ISO/IEC 17025
• Battery‑operated standalone unit – lithium AA, several years of operation
• USB‑C data transfer – easy download via COMET Vision
• 3‑year warranty – guaranteed COMET quality

Technical data U0541:

• Voltage inputs: 0 to 10 V DC (±10 mV), input impedance ~130 kΩ
• Temperature (Pt1000 external): −200 to +260 °C (±0.2 °C from −200 to +100 °C / ±0.2 % above)
• Resolution: 0.1 °C
• Channels: 2× voltage + 2× Pt1000
• Memory: 500,000 values (non‑cyclic) / 350,000 values (cyclic)
• Recording interval: 1 s to 24 h
• Measuring interval / display update: configurable 1 s, 10 s, 1 min
• Alarm: audible (buzzer) + visual (LED) on limit exceedance
• Display: backlit LCD
• Power supply: lithium battery 3.6 V AA
• Operating temperature: −20 to +60 °C
• Protection class: IP20
• Dimensions: 61 × 93 × 32 mm
• Weight (incl. battery): approx. 120 g
• Warranty: 3 years

Perfectly suited for:

• Process monitoring (voltage signals + temperature)
• Machine and plant monitoring
• Energy and consumption measurement
• Laboratory and calibration applications
• Cold chain and storage monitoring
• Quality management & audits
• Autonomous long‑term logging without mains power
• Mobile testing and service tasks

Installation and operation – ready within minutes

Connect probes/signals, insert the battery – done! Set intervals and limits, start logging – download data via USB‑C. The backlit display and audible/visual alarm ensure safe and convenient operation. Calibration certificate included – ideal for audits and quality management.

Summary:

• The data logger is designed for recording two voltage inputs and two temperature inputs (Pt1000)
• Data logging is stored in non‑volatile electronic memory
• Data can be transferred to a PC via USB‑C
• When set limits are exceeded, alarms are activated via LED, LCD, and audible buzzer
• A traceable calibration certificate is included

Scope of delivery:

• U0541
• User manual
• Traceable calibration certificate
• 1× lithium battery 3.6 V
• Free full version of COMET Vision analysis software
• USB communication cable not included
• External probes NOT included