Idronaut - Model CT-01Plus -Conductivity-Temperature Transfer for Oceanographic CTD Probe Calibration
The “Conductivity-Temperature Transfer Standard CT-01Plus” is a compact and rugged instrument designed for the metrology laboratories to perform calibration of oceanographic CTD probes. It combines a Primary Standard 100 ohm RPRT (Reference Platinum Resistance Thermometer), a large-sized Idronaut self-flushing cell provided with seven internal rings of fused platinum in the quartz with a microprocessor controlled high resolution and high accuracy electronic amplifier.
Optionally, the CT-01Plus can become a redundant measuring system when equipped with two temperature and two conductivity sensors.
The high performance electronics collects and transmits the temperature and conductivity readings through the RS232C interface from 1 to 10 times per second. The functions of the CT-01Plus are managed by means of a simple communication protocol through the RS232C interface. A Windows interfacing and calibration management programme “ICAL”, which greatly simplifies the CTD probes calibrations, completes the CT-01Plus.
- Large-sized self-flushing cell provided with seven rings of fused platinum in the quartz.
- High-performance 24-bit digitizing circuits.
- Temperature controlled oven conditions the electronics to obtain drift-free measurements.
- 1ppm Vishay resistors used as a reference for the CT-01Plus electronic preamplifiers.
- Redundant C/T sensor pair.
- Windows management software simplifies system operations and automates CTD calibration.
Components:
- CT-01Plus Deck Unit.
- RPRT Reference Platinum Resistance Thermometer.
- Conductivity Cell.
- Windows “ICAL” Management Software.
CT-01Plus Temperature
- Sensor: Standard 100 ohm RPRT (Reference Platinum Resistance Thermometer).
- Range: -5 to +45°C.
- Initial Accuracy: 0.001 °C.
- Resolution: 0.0001 °C.
- Digital resolution: 0.00000596°C (23 bits).
- Stability: +/- 0.0003°C/month.
- Sampling rate: from 1 to 10 Hz.
- Noise: <0.0003°C (1Hz).
- Excitation current: 1.2 mA at 10 KHz.
CT-01Plus Conductivity
- Sensor: Self-flushing cell provided with seven internal rings of fused platinum in the quartz (16 mm, diameter 110 mm length).
- Range: 0 to 70 mS/cm.
- Initial Accuracy: 0.001 mS/cm.
- Resolution: 0.0001 mS/cm.
- Digital resolution: 0.000008345 mS/cm (23 bits).
- Stability: +/- 0.001 mS/cm/month.
- Sampling rate: from 1 to 10 Hz.
- Noise: < 0.0005 mS/cm (1Hz).
- AC Excitation freq.: 10 KHz.
CT-01Plus Characteristics
- Operating environment: Temperature: 10-25 °C.
- Humidity: 10 to 90% no condensing.
- Warm-up: 60 minutes.
- Oven temperature: Typical operating temperature: 35°C.
- Stability: +/- 0.1 °C.
- Interfaces: RS-232C.
- Communications: Byte oriented proprietary communication protocol and a menu driven interface for maintenance access.
- Power supply: 115 or 230 VAC +/- 10%, 50/60 Hz.
- Dimensions: 480 x 350 x 190 mm.
- Weight: 10 Kg.
Calibration and management program that greatly simplifies and automates the calibration of conductivity, temperature and pressure sensors.
Interface up to 4 Idronaut OCEAN SEVEN 3xx CTD and the CT-01STD.