ELPRO LIBERO CH
Reusable logger for temperature and humidity. The PDF report is created via the USB port without software.
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- Temperature −30…+70 °C, humidity 0–100% RH
- 8 temperature zones and 2 humidity limits
- Accuracy typically ±0.2 °C and ±2.5% RH
How LIBERO CH works
LIBERO CH measures temperature and humidity with the same sensor. It is suitable, for example, for warehouses, rooms and transport boxes where humidity is also monitored. Humidity is measured in non-condensing conditions.
When the logger is plugged into a USB port, it creates a PDF report with alarm statistics and graphs. The logger can also be read and started with the LIBERO Cx BLE app.
Every logger has a 6-point calibration certificate, which can be retrieved from ELPRO's online service using the logger ID.
Specifications
Measurement
- Sensor
- Internal digital temperature and humidity sensor
- Measuring range
- −30…+70 °C, 0–100% RH (non-condensing)
- Accuracy, temperature
- Typically ±0.2 °C, max. ±0.4 °C
- Accuracy, humidity
- Typically ±2.5% RH, max. ±3.5% RH
- Resolution
- 0.1 °C, 0.1% RH
- Memory
- 37.750 readings of each (12 months at 15-minute intervals)
- Logging interval
- 1–60 min
- Alarms
- 8 temperature zones, 2 humidity limits, MKT
Device
- Display
- LCD 22 × 22 mm, OK and ALARM indication
- Readout
- USB (PDF without software) or Bluetooth (LIBERO Cx BLE app, iOS and Android)
- Battery
- Coin cell, not replaceable, air freight without battery declaration
- Service life
- 2 years (0…25 °C), 14 months over the full measuring range
- Dimensions
- 95 × 41 × 11 mm, 39 g
- Protection class
- IP54
Compliance
- Certificate
- Validation and 6-point calibration certificate (ILAC/NIST/ISO 17025 traceable)
- Standards
- GAMP 5, EN 12830, RTCA DO-160
- Report
- PDF/A, FDA 21 CFR Part 11
Documents
- Instructions for use, LIBERO Cx BLE (incl. EU declaration of conformity)English, PDF 5.6 MB
- SpecificationsEnglish, PDF 539 kB
- elproVIEWER ProfessionalEnglish, download page
- LIBERO Cx BLE app (iOS)English, download page
- liberoCONFIG and elproVIEWER Basic (Windows, free)English, download page
- LIBERO Cx instructions for use indexEnglish, portal
- Production calibration certificate lookup by device IDEnglish, portal
Bluetooth and battery life
The Bluetooth mode is selected in the logger settings: permanently off, permanently on, or temporarily on for 30 seconds after pressing Start. The battery cannot be replaced, and according to ELPRO a battery warning appears on the display 30 days before the end of its service life.
We install, train and service.
The same specialist handles commissioning and is still there for service years later.