QuadTemp and OctTemp
Multi-channel Thermocouple Data Loggers

Model #QuadTemp/OctTemp

Four or eight thermocouple channels
Rugged anodized aluminum casing
Provided with mounting holes
Up to 500,000 readings per channel
DC9V Power Adaptor Included



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Connection Kit Required
A PC interface USB - IFC200, $119 or Serial RS232 - IFC110, $99) is required to download data from your LogMaster data logger.
more info

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The QuadTemp and OctTemp are multichannel thermocouple recorders. The QuadTemp is a four-channel thermocouple recorder that records up to 26,214 readings per channel. The OctTemp, an eight-channel thermocouple recorder, records up to 14,563 readings per channel.
Thermocouples are one of the most popular temperature measuring devices available today. They measure wide temperature ranges, are rugged and inexpensive. Accordingly, they have become widely used throughout many industries.

We offer a full line of thermocouple loggers to fit most any application. They are designed to accept thermocouple types J, K, T, E, R, S, B, and N, and offer up to 16 bits of resolution. In addition to the thermocouple inputs, all of our thermocouple loggers offer an internal temperature sensor that can be used to monitor and record ambient temperatures.

Each thermocouple recorder comes standard with SMP-style (miniature) connectors for quick and easy setup. They are also available with removable screw terminal input connections upon request.

With the user-friendly LogMaster software, data is simply downloaded to a computer where the readings are displayed in degrees of Celsius, Fahrenheit, Kelvin, or Rankine. The software allows the user to view all data points and even a summary of the data being viewed for calculations such as Mean Kinetic Temperature. If additional analysis of the data is needed, the data can be easily exported to MS Excel® by simply clicking a button.

Internal Sensor Semiconductor, 0.1°C resolution, ±0.5°C accuracy from 0 to 50°C, -20 to 60°C range
Remote Channels Thermocouple type J, K, T, E, R, S, B, or N
Resolution 0.1°C (J, K, T, E); 0.5°C (R, S, B, N)
Accuracy ±0.5°C (J, K, T, E); ±2.0°C (R, S, B, N)
Range J: –346 to 1400°F (-210 to 760°C)
K: –454 to 22498°F (-260 to 1370°C)
T: –454 to 752°F (-260 to 400°C)
E: –454 to 1796°F (-260 to 980°C)
R and S: -58 to 3200F (-50 to 1760°C)
N: –454 to 2372°F (-270 to 1300°C)
B: 122 to 3308°F (50 to 1820°C)
Channels QuadTemp: 1 Internal & 4 Remote
OctTemp: 1 Internal & 8 Remote
Memory 500,000 readings per channel, channels can be disabled to increase memory
Sample Rate 0.25 seconds up to 24 hours
Battery 9V user replaceable, typical life 18 months
Dimensions 1.02 H x 7.24 W x 2.7 D inches ( 26 H x 183 W x 68 D mm)
Environmental Range -20 to +60°C, 0 to 95% RH non-condensing
Interface Pkg IFC110 or IFC200

LogMaster Software Quick Specs
• Real time recording via Serial, USB or Wireless
• Real time alarm notification
• Send email or phone text for alarms
• Real time auto save to text file
• Multiple graph overlay for profiling
• Display multiple engineering units
• Data summary statistics
• Digital calibration of loggers
• Data recall and export
• Customizable graphs
• Quick links to start and stop logging
Free Software Download
Select example data from the File menu and enter the model number you want to see.

Optional Type K Thermocouple Probes

  • Hundreds of probes to choose from
  • Penetration, surface, high temp, wire, and more
  • Select coiled or flat cables with optional extended cable lengths

more info
Select Category to View Probes

General Purpose

High Temp




Probe Accessories

Optional Type T Thermocouple Probes

  • Hundreds of probes to choose from
  • Penetration, surface, high temp, wire, and more
  • Select coiled or flat cables with optional extended cable lengths
Select Category to View Probes

Lab Probes
0.1°C Accuracy

0.2°C Accuracy

Probe Accessories


9 Volt Lithium Battery

Model: U9VL-J

  • 9v lithium battery
9v lithium battery for LogMaster Loggers.


LogMaster PC Interface - Serial

Model: IFC110

  • Serial interface connection
  • Includes software
Serial interface to download data from your LogMaster logger.


LogMaster PC Interface - USB

Model: IFC200

  • USB interface connection
  • Includes USB flash drive which contains software
USB interface to download data from your LogMaster logger.

USB RS-232 converter

USB to RS232 converter

Model: USB-1

  • Allow USB connections for RS232 devices
USB to RS232 converter

Cal Cert

NIST-Traceable Temperature Calibration

Model: CAL-2PT

  • 2-Point calibration
  • Traceable certificate

2-point temperature calibration performed in ThermoWorks' NIST-Traceable calibration lab. Includes calibration report and actual test data.
(Please allow 1 week for cal lab processing)

(For multi-channel loggers/devices order a calibration for each channel you want calibrated).

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Gift Wrap

Gift Wrapping

We'll wrap your gift in our custom gift paper, trimmed with a bow and gift tag. The rich, graphite and silver combination is suitable for any occasion or anybody.

Enter a custom message for the handwritten tag (Up to 50 characters). Cost for wrapping is $4.99 per item. Each item wrapped separately. Selectable in the order info where available. Some items can not be wrapped.

Ordering more than one of the same item but don't want them all wrapped? Just add each item you want wrapped to your shopping cart individually and select the wrapping option. Add your custom greeting for each wrapped item separately as you add the item to your cart.

Gift wrap orders are shipped in a plain box without packing slips. We're trying our best to keep the surprise.