PT-104, 4-Channel Temperature Logger for PT100/PT1000 Probes

  • Item no.: PP682
  • Delivery status: ca. 1 week
  • Shipping time: 7 - 7 workdays
  • Our price : 659,00 €
  • Excluding 19% VAT.
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  • Pico Technology Datenlogger


PT-104, 4-Channel Temperature Logger for PT100/PT1000 Probes

The USB PT-104 is a 4-channel temperature measuring data logger. It offers the ultimate in resolution (0.001 C) and accuracy (0.01 C). Along with temperature it can also be used to measure resistance and voltage.
  • Measures temperature, resistance and voltage
  • 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 USB 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 (low temperature co-efficient and drift). The exact value of each resistor is stored in an EEPROM to provide the ultimate in accuracy (yearly re-calibration is recommended). A high-performance 24-bit ADC is used to achieve the 0.001 C resolution.
Your USB PT-104 measures temperature using platinum resistance thermometers (PRTs). Both common industry standards (PT100 and PT1000) are supported. The unit is compatible with 2, 3 and 4 wire sensors (4 wire PT100 sensors are recommended for accurate measurements). A wide range of PT100 sensors are available for use with your USB PT-104.
When measuring resistance, your USB PT-104 uses a four-wire circuit to give the greatest possible accuracy.
Two resistance ranges are available (0 to 375 ohms and 0 to 10,000 ohms). The unit is calibrated for 0 to 375 ohms so this range should be used for accurate measurements.
For voltage measurements, each input connector can be treated as a differential input with ground, or two single-ended inputs. Both inputs must be zero volts or above, though it does not matter which input has the higher voltage.
Two voltage ranges are available (0 to 115 mV and 0 to 2500 mV). For the most accurate measurements use the 0 to 2500 mV range.
Your PT100 data logger is supplied with PicoLog data logging software. PicoLog will automatically detect which sensor is connected and will display readings in the correct units.
Also supplied is a software development kit. The SDK contains a range of software drivers and example code that you can use to write your own software or to use your USB PT-104 data logger with third-party software.
But I need to measure more channels?
Your USB PT-104 is capable of measuring up to 4 channels at once. Need more channels? No problem. Using PicoLog you can connect up to 4 Pico data loggers to one PC- giving you a potential 16-channel PT100 data logger, or the ability to use your USB PT-104 logger with other Pico devices such as the PicoLog 1000 multi-channel data logger.
The ultimate in portability
With both USB and Ethernet interfaces your USB PT-104 can be used in a variety of situations. If you need a portable solution that can be used at various locations and is fast to set up and use, simply connect your laptop to the USB PT-104 by USB. Need to monitor a situation over a period of hours or days, or from a remote location? Plug your USB PT-104 into a spare port on your network and then access it remotely either from your LAN or over the internet (using Power over Ethernet (PoE) technology means that you don't even need a separate power supply).
When accuracy is paramount the USB PT-104 is what you need
The USB PT-104 platinum resistance data logger gives you the ultimate in resolution and accuracy. You can use it to measure temperature, voltage and resistance. Having both USB and Ethernet interfaces gives you the choice of how you connect and power your USB PT-104, along with the ability to access the USB PT-104 remotely over a LAN or the internet. When the accuracy of your temperature measurements is paramount the USB PT-104 is what you need.
Technical Data USB PT-104:


PT100, PT1000
-200 to +800 C
0 to 275 Ohms
0 to 10 kOhms
0 to 115 mV
0 to 2.5 V
20 ppm
Accuracy (at 25 C)
0.01 C
20 ppm
0.2% (2.5 V)
Temperature coefficient
5 ppm/C
5 ppm/C
100 ppm/C
RMS noise with filter
0.01 C
10 ppm
10 ppm
0.001 C
1 Ohm
0.156 V
Overload protection
30 V
Number of inputs
Converter resolution
24 bits
Conversion time
720 ms per channel
Input connectors
4-pin mini DIN
Input impedance
>1 MOhms
Output connectors
USB and Ethernet

PC Requirements

Processor: Pentium II processor, or equivalent
Memory: 64 MiB (XP) / 512 MiB (Vista) / 1 GiB (Win 7) minimum
Operating system: 32- or 64-bit edition of Microsoft Windows XP SP2, Vista or Windows 7
Ports: USB 2.0 compliant port
Processor: 2 GHz Pentium IV processor, or equivalent
Memory: 256 MiB (XP) / 1 GiB (Vista / Win 7)
Operating system: 32- or 64-bit edition of Microsoft Windows XP SP2 (or above), Vista or Windows 7
Ports: USB 2.0 compliant port


Operating environment
Temperature range
Humidity range

0 C to 70 C (20C to 30C for quoted accuracy)
20% to 90% RH, non-condensing
Storage environment
Temperature range

-20 to +80C
5 to 95% RH, non-condensing

Physical Dimensions

184 x 135 x 36 mm (approx 5.31 x 7.24 x 1.42 in)
350 g (approx 12.3 oz)


PicoLog for Windows
PicoLog data acquisition software can collect up to 1 million samples. Features include:
Multiple views - view data as a graph, spreadsheet or text
Parameter scaling - convert raw data into standard engineering units
Math functions - use mathematical equations to calculate additional parameters
Alarm limits - program an alert if a parameter goes out of a specified range
IP networking - transfer measurements via a LAN or over the Internet
Software development kit
A growing collection of drivers and example code for various programming languages

Language support

Full support for English, French and German; menus only for Italian, Spanish and Swedish
User's guide
Programmer's guide

English, French, German, Italian, Spanish


Additional hardware (supplied)
USB 2.0 cable, Ethernet cable, user manuals, software CD-ROM
PC interface
USB 2.0 (USB 1.1 compatible) or Ethernet (cables supplied)
Power requirements
Powered from USB port or Ethernet
FCC (EMC), CE (EMC and LVD), RoHS compliant
5 years
Optional accessories:
PT-104 screw clamp adapter
Mini DIN plug for PT100/PT1000 probes
For suitable PT100 and PT1000 probes please click here!


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