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4 Ch, Differential, 24 bits, RTD data logger

Measures and records up to 4 platinum resistance thermometers
• Works with PT100 and PT1000 sensors
• Supports 2, 3 and 4-wire sensors
• Measures voltage and resistance
• 24-bit ADC
• Uses calibrated reference resistors for stability
• Supplied with PicoLog data logging software
• USB interface ensures easy installation
• Ethernet interface for remote operation
• Powered by USB port or Power-over-Ethernet (PoE)
• Multiple units can be run on a single PC


4 Ch, Differential, 24 bits, RTD data logger

The PT-104 Data Logger is a four-channel, high-resolution temperature converter for
use with PT100 and PT1000 type platinum resistance thermometers (PRTs). It can be
used to measure temperature, resistance and voltage.
In PT100, PT1000 and resistance modes, the unit can use a two, three or four-wire
circuit. Four-wire measurement gives the greatest accuracy.
In voltage mode, the input connector can be treated as a differential input with
ground, or as two single-ended inputs.

Power over Ethernet (PoE)
The PT-104 Data Logger can obtain its power from the Ethernet port as a Powered
Device (PD) according to the PoE standard. To use this feature, you must connect the
unit to Power Sourcing Equipment (PSE) such as a network switch, router or power
injector that also supports the PoE standard. Any standard Ethernet cable up to 100 m
(about 328 ft) in length can be used.

Programmer's Guide
All the software that you need for everyday use of the PT-104 Data Logger is supplied
with the unit. For more advanced applications, you can write your own software.
Information on SDK programming is published in a separate guide.

More Information
Number of input Channels 4
Channel Type Multiplexed
Signal Type Differential
Sensor type PT-100, PT-1000, Resistance, Voltage
Range -200 °C to +800 °C
Galvanic Isolation No
A/D Resolution 24 bits
Input Impedance 1 MΩ
Max Sampling 1.3 S/s
External Trigger No
Number of Output Channels No
D/A Specification No
Counter/Timer No
Digital IO


LAN port Ethernet 10/100
Host Interface USB2
Software Packages


PicoLog SDK

Dimensions N/A
Manufacturer Pico Technology
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PT-104 Data Sheet
(Size: 1.5 MB)
PT-104 User Guide
(Size: 605.7 KB)