Resistance data-logger LGP33-001

wirelessradio frequencywithout display

Overview
The LGP33 is a potentiometric data logger with a 3-input interface for monitoring potentiometric sensors (e.g. crack gauges and resistive sensors). It supports real-time transmission and local recording modes and is intended for field measurement campaigns. CE certified.

Modes

• Monitoring mode: Measurements are transmitted in real time to the receiver. If communication is temporarily unavailable (RF-to-USB key unplugged, PC off, RF-Monitor not running, communication fault, etc.), the data logger stores measurements in its buffer memory and automatically sends buffered data once communication is restored.
• Record mode (a-posteriori monitoring): Measurements are stored in the logger's memory and downloaded on user order by radio via RF Monitor software. This mode is used for campaigns without instant transmission.

On-board features / Supplied items

• IP65 aluminium enclosure
• ½-wave antenna supplied
• Power supply: AA Lithium Thionyl battery (included) with plug-in connector
• Temperature sensor integrated on the electronic board

General information
Measuring range: 1 kΩ to 650 kΩ
RF range: 100 m to 1 km (depending on receiving antenna and conditions)
Certification: CE

Technical specifications

• Product reference: LGP33-001
• Type: Potentiometric (transfer functions integrated in RF Monitor and portable to other reception tools)
• Transfer functions: Rp = 1 kΩ to 10 kΩ: linear; Rp = 10 kΩ to 650 kΩ: complex
• Number of channels: 3 multiplexed inputs (inter-channel delay: 150 ms), cannot be disabled, common power supply
• Measuring range (per channel): 1 kΩ to 650 kΩ
• Accuracy: Cumulative error 1 LSB max (~±3 × 10⁻³ % using Newsteo transfer functions)
• Resolution: 1 LSB (sensor full scale / 32768)
• Response time: 0.15 s per sensor; maximum measurement speed: 1 s
• Operating temperature: -40 °C to +85 °C
• IP rating (logger and connector): IP65 (tightness valid only if probe and antenna correctly tightened with crushed joints)
• Battery autonomy: >2 years at 25 °C with 10-minute measurement frequency (value may vary with use)
• Measurement frequency: configurable from 1 s to 4 h
• RF antenna connector: SMA
• RF range: 100 m to 1 km (depending on receiving-side antenna)
• Memory size: 10,700 measurements with date and time (example: 1 measurement every 10 min → ~74 days memory autonomy)
• Time and date resolution: 1 s
• Time deviation: ±2 min/month at 25 °C
• Flash lifetime: up to 100,000 cycles (~100 years at 1 s measurement rate)
• Integrated ILS functions: wake-up in hibernate, forced measurement outside set frequency
• Enclosure: aluminium (approx. 4 mm)
• Mounting: mounting plate supplied, screwed under the enclosure (4-point fixing) or strap passage windows
• Color: grey (aluminium)
• Product identification: 2 labels (top decorative label with range; side label with full reference and serial number)
• Dimensions: Length 98 mm, Width 64 mm, Height 34 mm
• Weight: approx. 280 g
• Compatible accessories/references: PFPN-SES58-001 (5 m cable with quick contacts, compatible LGS31 / LGP33, IP65); PFPN-CON08-001 (connector to connect customer sensor directly to LGS, compatible LGS31 / LGP33, IP65)