Pt-104 High Accuracy Data Logger Platinum Resistance Data Logger

The PT-104 is a four-channel temperature measuring data logger. It offers the ultimate in resolution (0.001 A C) and accuracy (0.015 A C). Along with temperature it can also be used to measure resistance.

Specifications:
- Measures temperature and resistance
- High resolution and accuracy
- Works with PT100 and PT1000 sensors
- Supports 2, 3 and 4-wire sensors
- No power supply required
- USB and Ethernet interfaces
- Run multiple units on a single PC

Accuracy and resolution :
Although accurate temperature sensors are widely available, it has been difficult to take advantage of them due to errors caused by the measuring device. Your PT-104, however, is inherently accurate due to its innovative design. Rather than relying on voltage references, which tend to be temperature-sensitive, it uses reference resistors, which are extremely stable with low temperature coefficient and drift. The exact value of each resistor is stored in an EEPROM to provide the ultimate in accuracy (yearly calibration is recommended). A high-performance 24-bit ADC is used to achieve the 0.001 A C resolution.

Temperature :
The PT-104 measures temperature using platinum resistance thermometers (PRTs). Both common industry standards (PT100 and PT1000) are supported. The unit is compatible with two, three and four-wire sensors (four-wire PT100 sensors are recommended for accurate measurements). A wide range of PT100 sensors are available for use with your PT-104.

Resistance :
When measuring resistance, the PT-104 uses a four-wire circuit to give the greatest possible accuracy. Two resistance ranges are available (0 to 375 IC and 0 to 10,000 IC). The unit is calibrated for 0 to 375 IC so this range should be used for accurate measurements.

Single-channel screw terminal adaptor:
Interfacing third-party sensors not fitted with the 4-pin mini-DIN connector or measuring resistance is possible using the PP660 screw terminal adaptor. This inexpensive adaptor has 4 breakout terminals and occupies a single channel of the PT-104