ProDAQ 6150 Isolated Precision Thermocouple LXI Instrument

  • 19″, 1U Solution for 16, 32 or 48 Thermocouple Sensors
  • Support for all common Thermocouple Types
  • Channel Isolation up to 350 VRMS (channel-to-channel and channel-to-ground)
  • Cold-Junction Sensor per Channel
  • Open Thermocouple Detection per Channel
  • 24-bit Sigma-Delta ADC per Channel
  • Simultaneous Sampling of all Channels
Size Guides


SKU: ProDAQ 6150 Category:
Delivery and return
Delivery and return
Shipping Information
Shipping Information
Composition and care
Composition and care



The ProDAQ 6150 is an LXI instrument designed for up to 48-channel isolated precision thermocouple measurements. It supports all common thermocouple types, namely J, E, N, K, T, R, S and B as well as custom types via a programmable conversion. Each channel is isolated from both the chassis and all other channels.

Analog Inputs: Each channel of the ProDAQ 6150 employs a 24-bit Sigma-Delta ADC to provide the highest possible measurement accuracy. Each channel is isolated from any other and also from the chassis, with a working isolation voltage up to 350VRMS. This allows any channel not only to float to different voltage potentials but also eliminates the possibility of ground loop error. Each channel is protected against overvoltage, both short-term transient spikes as well as constant DC voltages up to ±20V. An EMI filter is included per channel to reduce the possibility of error due to high frequency conducted noise. This filter also acts as an Anti-alias filter for the Sigma-Delta ADC.

Simultaneous Sampling: The ProDAQ 6150 has a dedicated ADC per channel. This allows for true simultaneous sampling of all channels. The scan rate can be varied from 1 S/s to 1000 S/s, with a resolution of 1Hz.

External Triggers: Two isolated TTL level input and output triggers are available on the rear panel of the ProDAQ 6150.

Cold Junction Compensation: One of the keys to making precision thermocouple measurements is the accuracy of the Cold Junction Compensation. The ProDAQ 6150 is equipped with a dedicated temperature sensor per channel which is measured along with the thermocouple input during every scan. The sensor is thermally bonded to the cold junction in order to provide the most accurate and fastest response to changes in the cold junction temperature.

Open Thermocouple Detection: Each channel is equipped with open thermocouple detection functionality. It provides immediate indication in the event of a broken thermocouple, both in software and by a LED on the instruments front panel.

Data Storage: The ProDAQ 6150 features a RAM disk of 64MB to store data acquired independently of the host controlling the device. Optional SSD hard drives can be installed to permanently store data on the device, allowing a fully independent stand-alone mode. Data acquisition to both storage devices as well as the data retrieval can be done via the web interface.

Various Mounting Options: The ProDAQ 6150 comes in a 1U high unit suitable for rack mount in a standard 19” rack if used with the ProDAQ 5726 Rack-Mount kit. The ProDAQ 6150 can also be desktop mounted using the ProDAQ 5726 Stackable Tabletop Feet Set.



  • 19″, 1U Solution standalone instrument
  • 16, 32, or 48 channel
  • Support for thermocouple types J, E, N, K, T, R, S, B
  • Support for up to two custom thermocouple types
  • Channel isolation up to 350 VRMS (channel-to-channel and channel-to-ground)
  • Cold-Junction Sensor per Channel
  • Open Thermocouple Detection per Channel
  • Open Thermocouple Indication per Channel (LED on Front Panel)
  • 24-bit Sigma-Delta ADC per Channel
  • Simultaneous Sampling of all Channels
  • Temperature Accuracy (Inclusive CJC Error, exclusive TC error, 1 Hz scan rate):
Thermocouple Type Temperature Range Typical Accuracy at 400 °C (*)
J –210 to 1200 °C 0.16 °C
K –200 to 1372 °C 0.16 °C
T –200 to 400 °C 0.16 °C at 300 °C
E –200 to 1000 °C 0.16 °C
S –50 to 1768 °C 0.20 °C
R –50 to 1768 °C 0.20 °C
B 250 to 1820 °C 0.25 °C
N –200 to 1300 °C 0.16 °C



ProDAQ 5725 Rack-mount Kit