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This product has been replaced by the TSB

This may be the coolest instrument we have ever developed! It has a touchscreen digital display with full-graphing capabilities which means your complete temperature and humidity history is at your fingertips - with scrolling and zoom. The Touchscreen also stores your data for downloading. The Touchscreen is designed to work without software. Software is only needed if you want to download the data to a PC.

  • 4.1" x 5.5" (104mm x 140mm) Touchscreen Display
  • Internal Temperature and Humidity Sensor
  • Two Channel
  • Audio/Visual Alarms
  • Flash Card Data Download ready
  • Fahrenheit or Celsius
  • 0.8F (.5C) Accuracy
Fh520 front minmax 691
Fh520 front jumbo 810
Fh520 front blank 728
Fh520 lft angle 631
Fh520 rt angle 528
Fh520 lft side 443
Fh520 rt side 331
Fh520 back 187
Fh520 sdcard 22

Download Images: Print Quality | Hi-Res

Important Information

DicksonWare Software is needed if you choose to download data from this product to your PC.

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.

  • Ambient Operating RH Conditions 0 to 95% RH non-condensing
  • Ambient Operating Temperature Conditions 0.0 to 122.0F (-17.0 to 50.0C)
  • Battery Backup 12 Hrs (Re-chargeable batteries included; Hardwired)
  • Cable Details USB - Male Series A plug to 5 pin Male Series B mini plug.
  • Calibration Options N100 , N300, N400, & N520
  • Channels CH1: Temperature (F/C), CH2: Humidity
  • Data Capacity 32,000 (16,000 per channel)
  • Dew Point Accuracy +/-3.6F from 30.0 to 95.0% RH (Calculated) (+/-2.0C from 30.0 to 95.0% RH (Calculated))
  • Dimensions 1.5 x 7.3 x 6.1in
  • Display Dimensions Height 5.5
  • Display Dimensions Width 4.1
  • Display Type Touchscreen; Touchscreen
  • Display Update Rate Varies with logging interval
  • Displays Min/Max Yes
  • Download Type USB / Flash Card
  • Flash Card Option SD Card (2GB or less)
  • Humidity Accuracy +/-2.0% RH from 0.0 to 60.0% RH (+/-3.0% RH from 60.0 to 95.0% RH)
  • Humidity Range 0-95% RH non-condensing
  • IP Rating 21
  • Key Features Touchscreen, multiple screen views, on-screen zoom and scroll, software optional, user customizable sample rate, temperature scales and unit of measure
  • Minimum Software Version Required 17.2.0
  • Mounting Options Keyhole
  • Power Cord 6 ft
  • Power Source 120 to 240 VAC, 12 VDC (INTL adapters available)
  • Required Software A016, A026, N525 (all optional)
  • Response Time 1 Minute to 63% of Full Scale
  • Sample Interval User Selectable
  • Temperature Accuracy +/-0.8F from 20.0 to 122.0F 1.8F Remaining (+/-0.45C from -6.0 to 50.0C 1.0C Remaining)
  • Temperature Range Help0.0 to 122.0F (-17.0 to 50.0C)
  • Unit Weight 9 lbs
  • User Calibration with SW400 Yes
  • 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.

Calibration Software

Logger Calibration Software

AC Adapter

AC Adapter

Universal Plug Kit for AC Adapter

Set of Three International Power Plugs for AC Adapter


DicksonWare Software with USB Cable

Card Reader Kit

Includes USB Reader and Flash Memory Card

Memory Card

Removable Flash Memory Card

Secure Software

DicksonWare Secure Software with USB Cable

Frequently Asked Questions

Make sure that  USB is selected under File > Preferences > Communications.

Unplug USB cable and plug back in.

Remove power to the logger (this will not cause the unit to lose any logged data), unplug the USB cable, power the logger back on, then reconnect the USB cable.

If the logger was used in a moist or humid environment condensation may have formed on the unit. Place unit in a warm dry environment for 24 hrs. Clear memory and try again. These loggers are designed for use in a non-condensing environment.

If possible, try another PC, and/or another USB port.

Up to 30 minutes of saved logged data can be lost when the unit is turned off.
Yes, as long as the units on/off switch is in the "on" position.
If the logger lost AC power for a period of time, the logger can occaissionally lock up when AC power is restored.

Do not turn off your logger via the power switch.

Do remove AC power via the power cord for 10 seconds and the plug back in.

The unit should display saved data and continue logging normally.
1) Please be sure you are using DicksonWare version 17.1 or higher.

2) When using DicksonWare to view saved data, you must first CLEAR the Touchscreen via DicksonWare before logging. Once cleared, the Touchscreen can be edited and logging can begin.
Approximately 12 hours, but a UPS can be used for better results.
The logger failed to refresh the graph properly when AC power was restored.

Unplug the AC power cord from the logger for 10 seconds. Plug AC power back in. All saved data should display and the unit should begin logging normally.
When an alarm is triggered the display alarm indicator will flash, the audible alarm will sound and the relay for that channel will activate.

Display NOT Pressed: After 30 seconds, the audible alarm will stop, display alarm indicator will continue to flash, relays will remain active.

Display Pressed (any time): Audible alarm will stop, display alarm indicator will stop flashing, relays will be inactive.
If after 2 minutes or the next sample rate (whichever is longer) the alarm condition is still present, the audible and visual alarms and relays will activate.

If the unit is in alarm mode, and the menu is accessed, the audible and visual alarms will immediately activate when returned to the main screen. The Relays will not activate until the 2 mintues have passed or the next sample is recorded.
All remote probe models will issue an alarm if the probe has been disconnected or is loose. Check the probe to ensure it is plugged in securely.
  • The screen goes blank when in backup battery mode.

Make sure the unit is not attached to the USB cable. Powering on the unit while attached to the USB can cause the unit to fail on startup. Remove the USB cable and turn the unti off then on.

If the Touchscreen logger is locked up or has failed to communicate with DicksonWare before, check the followng:

1) Make sure DicksonWare v17.1 or higher is installed.

2) With the logger on, press the current button to view current readings. If no readings are displayed, the unit is locked. Perform the following steps:

a) Connect the AC adapter to the Logger then plug into a standard electrical outlet. Slide the power switch up to the OFF position.
b) Connect the logger to the PC via USB
e) Open DicksonWare. DicksonWare should recognize the logger.
f) Either download data and clear or clear the logger.
g) Remove logger from USB and slide the power switch to the "ON" position.
h) Logge should resume normal operation and when connected to DicksonWare the logger should be recognized.

3) If the unit displays current readings, Windows may not want to recognize the unit since it failed once before. Perform the following steps:

a) Connect the logger via USB to the PC.
b) Open Device Manager via Control Panel. Open Human Interface Devices and find the logger.
c) Delete the logger device.
d) Immediately unplug the logger.
e) Plug the logger back in and open DicksonWare. The logger should be recognized. If not contact technical support.

Flash cards not purchased through Dickson should be formatted. If formatted after experiencing issues the unit will have to come back to be reset.

Formatting instructions:
1. Insert flash card into card reader
2. Go to My Computer and right click on the drive letter that corresponds with the card
3. A menu will appear. Choose the format option
4. Another window will appear
5. Under the "File System" heading, drop down the menu and choose the option, if running Windows XP. Choose "FAT" if running Windows 7 or 8.
6. Then click on the start at the bottom of the window

This will format the card in the correct manner for use with the unit.