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Vaccine Data Logger

The VFC325 is a two-probe version data logger from our line of continuous data recorders for monitoring vaccine storage. Geared for fast-paced clinical settings this temperature data logger provides 24/7 temperature monitoring of your vaccine supply. The digital display provides at a glance feedback on min/max and current readings

  • Two K-Thermocouple probes with Glycol Bottle
  • Jumbo Display with min/max option
  • Audio/Visual Alarms
  • Calibrated and Certified

DISCLAIMER: The CDC and the Vaccines For Children Program are not affiliated with Dickson, and they do not evaluate or endorse the products sold on this website.

Please note: As of Jan 1, 2018, this will not be VFC compliant in any state according to CDC VFC Guidelines. A ccmpliant VFC solution can be found here.

Calibration Method

Calibration ensures Regulatory and Audit Compliance

Vfc325 front 893
Vfc325 lft angle 604
Vfc325 rt angle w bottles 531
Vfc325 lft side 415
Vfc325 rt side 346
Vfc325 back 206
Vfc325 probe 168
Vfc325 sdcard 119
Vfc325 lft.angle w bottles 85
Vfc325 top 72

Download Images: Print Quality | Hi-Res

Important Information

DicksonWare Software is needed to communicate with this product and is sold separately.

Dickson Expert Services

Our Dickson Data Division has specially trained representatives to address the needs of customers with large installations or unique demands. Please call 888-452-4626.

  • Alarm Type Audio/Visual on High/Low Temp Limits
  • Ambient Operating RH Conditions 0-95% RH non-condensing (Logger only)
  • Ambient Operating Temperature Conditions -4.0 to 158.0F (-20.0 to 70.0C)
  • Approvals CE
  • Battery Backup 4 AA Batteries
  • Battery Life (Avg) 6 Months
  • Cable Details USB - Male Series A plug to 5 pin Male Series B mini plug. Serial - 9 pin female D-shell to male 2.5mm stereo plug
  • Cable Length 6.0ft
  • Calibration Options N100, N300, N400, N520
  • Channels CH1: Temperature, CH2: Temperature
  • Data Capacity 32,000 (16,000 per Channel)
  • Dimensions 1.6 x 3.0 x 4.0in
  • Display Dimensions Height 1.375
  • Display Dimensions Width 2.0
  • Display Resolution 0.1 from 0.0 to 999.99; 1 over 1000
  • Display Type LCD
  • Display Update Rate 10 Seconds (Battery Power), 1 Minute (AC Power)
  • Download Time 1 Minute (USB), 3 Minutes (Serial)
  • Download Type USB / Serial / Flash Card
  • IP Rating 20
  • Included Accessories Four AA Batteries, Quick Start Guide, Two 4' Bead-Wire Probes and Two Glycol Bottles. *Software is not included.
  • Memory Type EEPROM, Removable Flash Storage Device
  • Minimum Software Version Required 8.0
  • Mounting Options Wall Mount (With Keyhole)
  • PC Requirements HelpMicrosoft Windows 98 or newer, 16 MB RAM, 1 free COM (serial) port with dedicated interrupt or 1 USB root hub, CD drive, VGA monitor or better
  • Power Source 4 AA Batteries
  • Power Source Notes AC Power is optional, and sold separately
  • Power Status Indicator LCD Display
  • Remote Probe Accuracy 0.3% of Full Scale
  • Remote Sensor Length 4'
  • Remote Sensor Type 2 K T/C with Mini Connectors
  • Response Time 30 Seconds to 63% of Full Scale
  • Sample Interval User Selectable (from 5 minutes to 20 minutes, in 1 minute increments).
  • Software Options A015, A016, A025, A026
  • Temperature Accuracy +/-1.8F from -22.0 to 122.0F 3.8F Remaining (+/-1.0C from -30.0 to 50.0C 2.1C Remaining)
  • Temperature Range Help-20.0 to 158.0F (-29.0 to 70.0C)
  • Temperature Sensor Type Thermistor/Thermocouples
  • Unit Weight 3 lbs
  • Units/Pkg 1
  • Warranty 12-Month Limited
Why should I calibrate?

All instruments lose accuracy over time due to normal usage and the environmental conditions to which they are exposed.

How often should I calibrate?

For most applications, the recommended calibration interval is every twelve months.

N100 1-Point NIST Traceable Calibration $99.00 Add
N300 3-Point NIST Traceable Calibration $156.00 Add
N400 3-Point Ultima NIST A2LA Accredited Calibration $269.00 Add
What is NIST Calibration?

NIST stands for the National Institute for Standards and Technology. This organization is responsible for maintaining the master for different measurements, such as the standard "foot", standard, "second", or standard "pound". NIST also maintains the standard for temperature, humidity and pressure.

NIST Traceable means that the measuring standard can be traced directly back to the master standard maintained by the NIST organization.

NIST-Traceable does not tell you the measurement accuracy of a metrologty service in any detail. Only metrology services that can document their ISO 17025 standard provided data on their best measurement uncertainty.

AC Adapter Extension Cable 10'

10' Power Extension for R157 AC Adapter

AC Adapter

AC Adapter

Universal Plug Kit for AC Adapter

Set of Three International Power Plugs for AC Adapter

Temperature Probe

Replacement Bead Wire Temperature Probe

AA Battery

AA Alkaline Battery

Glycol Bottle

Bottle of Glycol Solution w/ Septum Close

Card Reader Kit

Includes USB Reader and Flash Memory Card

Memory Card

Removable Flash Memory Card

USB Download Cable

USB Download Cable - length 6 feet (2m)

Secure Software

DicksonWare Secure Software with USB Cable


DicksonWare Software with USB Cable

Frequently Asked Questions

Remove the existing cap from the bottle and use the septum lid with the rubber center. Push the probe through the small hole and tighten the lid onto the bottle. If a hole in the lid is not evident, puncture a new hole.
When an alarm condition occurs the display will automatically display ALRN. The alarm will not sound until the two minute alarm delay period has passed.

If the alarm condition clears before the alarm delay period has passed, the display will automatically clear the ALRN notification.

If the alarm delay period has passed and the alarm sounds before the alarm condition clears, the alarm will continue to sound and the display will flash ALRN until the ALARM button is held down till CLR is displayed. This will clear both the audio and visual alarm notification. NOTE: Once the alarm sounds, it will continue to sound regardless of whether the alarm condition still exist.

Verify that you have the correct version of DicksonWare software installed on your PC. Version 10.0 or higher is required.

Verify that the correct COM port is selected: From the main Dicksonware screen, click on Logger then Communication, a black dot will appear next to the selected COM port. You may need to select a different COM port. Should you get an error message stating that Device Is Already Open, this could mean that you have the proper COM port selected, but another device, or its software, has it allocated. Palm pilots, for example, will cause this problem, in which case the port is not actually available and you may haveto disable that device.

You may need to relocate the download cable to another serial port on the back of the PC and possibly try changing the COM port again in DicksonWare.

If communication has not been established with the previous steps, you may need to open the logger and press the reset button and then try all COM port and cable combinations again.

If possible, try another PC

Make sure that either Serial or USB is unplugged, and that either Serial / USB is NOT checked in File > Preferences > Serial / USB.

Unit may be locked up, try removing the battery and then replacing after a few moments.

Battery may be to low or dead, replace batteries

  • This means that the unit does not recognize the external probe, check to see that it is connected properly. If it is connected properly, there may be a weak internal connection and should be returned.
  • Is there an extension cable being used? It could be defective. Omit the extension cable and try another K-type probe.
  • This is normal when an activated channel has no probe connected at the time a sample is taken.
This is a generic fault code. There is something wrong with the MMC card (full or not formated correctly) or there is a hardware issue (a bad connector or no card present - can''''t see any card). Try another card (make sure is is an MMC card not an MMC Plus card), and that it has been supplied by Dickson.
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  • Yes, they can be changed using Dickson software.
No, the sample rate cannot be changed.
No, the logger is preset to WRAP which means that it will start to log new data over old data.
Yes, chill the glycol bottle, attach it to the probe and then proceed to set up the logger using Dickson software.

Channel 2 can be disabled by doing the following: Open DicksonWare software. Choose "Setup". Choose "Channels" tab. Choose "Adjust" for channel 2. Under the "Enable" tab, uncheck the check mark. Choose "Adjust" to accept the change. Choose "OK" in the dialogue box to clear and restart logger. Channel 2 will be grayed out under "Channels" tab. Disabling this channel will not make the alarm inactive. Be sure to disable the alarm or set it to an unobtainable min/max.

Yes, the alarm delay can be set according to your product storage instructions.
  •  Press and hold the Min/Max button for 5 seconds.

The Flash Memory Download Feature was designed to work with standard MMC cards. MMC Plus cards can cause the unit to stop logging when used to download data. If you think the unit stops logging when the Flash Memory Download Feature is used, you might be using a MMC Plus card. We recommend using Dickson Flash Memory Cards.

The min/max on the display is not the min/max alarm settings. The min/max on the display shows the temperature or temp/Rh min/max only.

Replace the batteries, they may be low.