RF312GLYCOL WiFi Glycol Simulant Data Logger

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The RF312Glycol Diligence WiFi Glycol Simulant Data Logger is a battery powered device with an internal rechargeable lithium polymer battery, but can be permanently powered using an RF320 USB power supply (available separately).

The LCD display includes several features including Max and Min readings and indicators for low battery, alarms, WiFi connection and signal strength. The RF312 has a protection rating of IP43 and the glycol probe, IP67. The RF312 is freestanding, but can be attached to a wall or surface using the bracket provided. The glycol buffer probe is supplied with a detachable magnetic base for easy installation.

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 or the Cloud (max 30 days at 10 second sample interval). Although the WiFi data loggers have an impressive range this can be increased by using WiFi extenders.

17025 compliant certification is available.

The data logger is IEEE 802.11b/g/n compliant, supports WEP, WPA/WPA2 encryption and enterprise networks*.


  • High Accuracy Glycol Buffer Probe Temperature Measurement range -40 to +125°C / -40 to +257°F
  • Wirelessly stream and view data on the Comark Cloud or on a PC
  • Data logger set up is easy using our free PC software
  • View and analyze multiple data loggers, including graphing of historic data
  • Configurable high and low alarms with indicator
  • Data logger memory stores data even if WiFi is temporarily disconnected

The Diligence WiFi Data Logger now features ‘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.

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.

  • Temperature Measurement Range: -40 to +125°C / -40 to +257°F
  • Plug & Play Installation using existing WiFi Network
  • Supplied with High Accuracy Glycol Buffer Probe



The RFAXGLYCOL Glycol Buffer Probe is designed for use in monitoring the temperature of vaccines and is designed to act as a replacement part for the Buffer Probe that is supplied as part of the RF312Vaccine Diligence WiFi Glycol Simulant Data Logger.

  • Temperature Measurement Range: -40°C to +100°C / -40°F to +212°F
  • Glycol Buffer Response Time: 40 Minutes to achieve 90% of temperature change
  • Glycol Buffer probe Lead length: 3 Meters




Sensor Type High Accuracy ‘PLUS’ Specification Thermistor
Battery Life >6* Months
USB Supply Voltage 4.5 to 5.5 Vdc
Operating Temperature Range -20°C to +60°C / -4°F to +140°F
Logging Period (User Configurable) 10 Seconds to 12 Hours (Typical 10 Minutes)
Transmission Period (User Configurable) 1 minute to 24 hours (Typical 1 Hour)
Temperature Measurement Range -40 to +125°C / -40°F to +257°F
Temperature Measurement Resolution 0.01°C / 0.01°F
Temperature Display Resolution 0.01°C / 0.01°F
System Temperature Accuracy (-15 to +80°C) ±0.2°C
System Temperature Accuracy (+5°F and +176°F) ±0.4°F
System Temperature Accuracy (-40 to +125°C) ±0.6°C
System Temperature Accuracy (-40°F to +257°F) ±1°F
Logger Dimensions Height 82mm / 3.23" x Width 70mm / 2.75" x Depth 22mm / 0.86"
Supplied Glycol Buffer Probe Lead Length 3m
WiFi Compliance IEEE 802.11b/g/n compliant, supports WEP, WPA/WPA2 encryption and enterprise networks (MS-CHAPv2, PEAP, EAP-FAST, EAP-TTLS)
Glycol Buffer Response Time (t90*) 40 minutes
*The t90 response is the time taken for the temperature probe to achieve 90% of the ambient temperature, after being subjected to an instant change. This response time is designed to reproduce the thermal characteristics of a vaccine vial, accurately tracking the temperature of the vaccine.



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