WiFi Temperature Data Logger with Thermocouple Probe

Part No: RF314-TC (4380233)

£145.86 (ex. VAT)

The RF314-TC Temperature Data Logger with Thermocouple Probe measures the temperature of the environment in which the probe is situated.

  • Temperature Range: -270°C to 1300°C / -454°F to 2372°F
  • Plug & Play Installation using existing WiFi Network
  • Supplied with removable Thermocouple Probe, Micro USB Lead and Wall Bracket
  • Warranty: 1 Year



RF314-TC Diligence WiFi Temperature Data Logger with Thermocouple Probe
RF314-TC_2017-F-w_UK_SQ01_4368_300dpiRF314-TC_2017-F-w_UK_SQ02_3000_300dpiRF314-TC_2017-F-w_UK_SQ03_3000_300dpiRF314-TC_2017-F-w_UK_SQ05_3000_300dpiRF314-TC_2017-F-w_UK_SQ06_3000_300dpiRF306_Bracket_SQv2RF320 Power Supply Unit

WiFi Temperature Data Logger with Thermocouple Probe

The RF314-TC Temperature Data Logger with Thermocouple Probe measures the temperature of the environment in which the probe is situated. Data is transmitted wirelessly via a WiFi network to a PC and viewed using free Software available to download. During configuration the Data Logger will search for an existing wireless network while physically connected to the PC. It can then be placed anywhere within range of the network.

If the Data Logger temporarily loses connectivity with the network, it will log readings until it is able to communicate again with the PC application (max 120 days at 10 second sample interval). The range of the Data Logger can be increased by using WiFi extenders.

The RF314-TC Data Logger is supplied with a Thermocouple Probe and can be used with a range of probes from Comark Instruments in a variety of food production and food service temperature applications.

This RF314-TC Temperature Data Logger with Thermocouple Probe is a low powered battery device with a battery life of 3 months to one year, depending on transmission rate. The battery can be recharged via a PC or by mains power using the RF320 (UK/US) Power Supply Unit, which is available as an accessory.


  • Measurement range -270°C to 1300°C / -454°F to 2372°F (probe dependent)
  • Rechargeable internal lithium polymer battery
  • Easy data logger set-up using free PC software application
  • Temperature data logger with K type thermocouple probe
  • Supports J, K, N, T type probes
  • Temperature selection in °C or °F
  • Data can be viewed via the graphing tool or can be exported to MS Excel
  • Configurable high and low alarms with indicator
  • Wireless connectivity to PC via WiFi
  • Max and Min readings
  • IEEE 802.11b/g/n compliant
  • Protection rating IP55
  • Capable of logging greater than 1 million data entries
  • Memory stores all data even if WiFi is temporarily disconnected
  • Fully featured LCD segment display
  • Low battery indicator
  • WiFi connection indicator
  • USB port used for recharging (can only be recharged when the unit
    is between 0 to 40°C / +32 to 104°F)
  • Supplied with removable thermocouple probe, micro USB lead and Wall Bracket

Upgraded WiFi Loggers (July 2016)

Comark has upgraded the Diligence WiFi Data Logger range from ‘B’ (IEEE 802.11b) to ‘BGN’ (IEEE 802.11b/g/n) WiFi compatibility.

One of the major benefits of the switch to type ‘BGN’ WiFi is that it speeds network communications. IT departments in many schools and hospitals have been turning off ‘B’ compatibility to improve network speeds, so ‘BGN’ devices are often all that they will consider for new network devices.

Plus there are a number of other improvements to the Loggers:

New LCD on all Loggers

RF300 loggers now have a new two-Line LCD and a new LCD surround. The new segment battery indicator shows the charge on the battery all the time.

Improved Display Resolution

RF313-TH WiFi Temperature and Humidity Data Logger now shows temperature to 0.1°C & 0.1°F.
RF314-TC WiFi Temperature Data Logger with Thermocouple Probe now shows temperature to 0.1°C above 1000°C and below -100°C

How do I tell them apart from the old versions?

Telling them apart is straightforward. The part number for the logger can be found on the rear of the logger along with the MAC Address which, for all ‘BGN’ enabled products is 98:8B:AD:20:00:00 -> 98:8B:AD:2F:FF:FF

Still have questions or need advice?

Please contact us.



Technical Specifications

Battery Life3-12 months depending on frequency of transmissions
USB supply voltage5V (typical)
Operating temperature range-20°C to +60°C / -4°F to +140°F
Logging rate (user configurable)10 seconds to 12 hours
Transmission period (user configerable)1 minute to 12 hours
Temperature measurement range (probe dependent)-270°C to +1300°C / -454°F to +2372°F
Temperature measurement resolution0.1°C / 0.1°F
Temperature display resolution0.1°
Temperature accuracy (probe dependent)±1.5°C / ±1.8°F
Supplied probe temperature Accuracy±1.5°C / ±1.8°F
Supplied probe temperature range0°C to +200°C/+32°F to +392°F
Supplied probe length1.5m
WiFi ComplianceIEEE 802.11b/g/n compliant, supports WEP, WPA/WPA2 encryption and enterprise networks (MS-CHAPv2, PEAP, EAP-FAST, EAP-TTLS)
Warranty1 Year