6" (152mm) Temperature Chart Recorder

Our 6" (152mm) line of temperature chart recorders feature a sleek look and feel, precision pen movement, k-thermocouple probes and 8 user selectable temperature ranges to choose from. The 6" (152mm) is a great size for monitoring refrigerators and freezers.

  • One K-Thermocouple Probe
  • 6" Chart (152mm)
  • User selectable recording times and 8 temperature ranges
  • AC power with battery backup
Calibration Method

Calibration ensures Regulatory and Audit Compliance

KT621

$369.00

Important Information

Charts are sold separately.

Support Information
Support Information Dickson KT621 Product Manual
Dickson Expert Services
Support Information

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.

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Description 6" (152mm) Temperature Chart Recorder with Probe 6" (152mm) Temperature Chart Recorder with Probe and Display 6" (152mm) Temperature Chart Recorder with Probe, Display, Alarms and Relay Paperless Temperature Recorder with Probe WiFi Data Logger with Display, Probe, Alarm
Price $369.00 $469.00 $599.00 $429.00 $479.00
Remote Probe Icon-compare-check Icon-compare-check Icon-compare-check Icon-compare-check Icon-compare-check
Relay Icon-compare-check
Display Icon-compare-check Icon-compare-check Icon-compare-check Icon-compare-check
Alarm Icon-compare-check Icon-compare-check Icon-compare-check
Temperature Range Icon-question
  • -100 to 0F/C
  • -50 to 0F/C
  • -50 to 50F/C
  • 0 to 50F/C
  • 0 to 100F/C
  • 0 to 250F/C
  • 0 to 500F
  • 50 to 100F/C
  • -100 to 0F/C
  • -50 to 0F/C
  • -50 to 50F/C
  • 0 to 50F/C
  • 0 to 100F/C
  • 0 to 250F/C
  • 0 to 500F
  • 50 to 100F/C
  • -100 to 0F/C
  • -50 to 0F/C
  • -50 to 50F/C
  • 0 to 50F/C
  • 0 to 100F/C
  • 0 to 250F/C
  • 0 to 500F
  • 50 to 100F/C
  • -300 to 2000F
    (-184 to 1093C)
  • -300 to 2000F
    (-184 to 1093C)
Temperature Accuracy
  • ±1.8F from -22 to 122F 3.8F Remaining
    (±1C from -30 to 50C 2.1C Remaining)
  • ±1.8F from -22 to 122F 3.8F Remaining
    (±1C from -30 to 50C 2.1C Remaining)
  • ±1.8F from -22 to 122F 3.8F Remaining
    (±1C from -30 to 50C 2.1C Remaining)
  • ±1.8F from 0 to 122F
    (±1C from -17 to 50C)
  • ±1.8F from -22 to 122F 3.8F
    (±1C from -30 to 50C 2.1C)
Compare Compare Compare Compare Compare
Add to Cart Add to Cart Add to Cart Add to Cart Add to Cart
  • Ambient Operating RH Conditions 0-95% RH non-condensing
  • Ambient Operating Temperature Conditions 32 to 122F (0 to 50C)
  • Approvals RoHS, CE
  • Battery Backup 9V Battery Back-up. Powers unit for up to 2 days.
  • Battery Life (Avg) 48 Hours (Back-up Only)
  • Calibration Options N100, N300, N400
  • Channels CH1: Temperature
  • Chart Rotation Speed 24 Hour or 7 Day
  • Dimensions 3.25 x 7.56 x 7.56in
  • Display Type LCD
  • Enclosure Rugged Black ABS Case, Polycarbonate Door, Aluminum Dial
  • IP Rating 21
  • Included Accessories AC Adapter, Red Pen, 9V Battery, Quick Start Guide and 4' Bead-Wire Probe. *Charts sold separately.
  • Keypad Functions Power On/Off, Pen Home
  • Mounting Options Free Standing or Wall Mounted
  • Power Cord 6 ft
  • Power Source 120 to 240 VAC, 12 VDC (INTL fittings available); AC Adapter
  • Power Status Indicator LED Indicator
  • Remote Sensor Length 4
  • Remote Sensor Type 1 K T/C with Mini Connector
  • Response Time 30 Seconds to 63% of Full Scale
  • Temperature Accuracy +/-1.8F from -22 to 122F 3.8F Remaining (+/-1C from -30 to 50C 2.1C Remaining)
  • Temperature Range Icon-question -100 to 0F/C; -50 to 0F/C; -50 to 50F/C; 0 to 50F/C; 0 to 100F/C; 0 to 250F/C; 0 to 500F; 50 to 100F/C
  • Temperature Sensor Remote Probe
  • Unit Weight 9 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.

A340

$32.00

Glycol Bottle

Bottle of Propylene Glycol Solution - dampen temperature swings.
Add to Cart

A202

$179.00

Thermocouple Extension

K-Thermocouple 100' (30m) Extension Cable
Add to Cart

A203

$125.00

Temperature Probe

6" (15cm) High Temperature Immersion Probe
Add to Cart

D611

$156.00

Shielded Immersion Probe

15' (4.5m) Shielded Thermocouple with 4" (10cm) stainless steel tip
Add to Cart

D605

$79.00

Piercing Probe

4" (10cm) Thermocouple Handled Piercing Probe
Add to Cart

D608

$99.00

Immersion Probe

5" (13cm) Thermocouple Handled Immersion Probe
Add to Cart

D617

$52.00

Probe Extension

K-Thermocouple 10' (3m) Extension Cable
Add to Cart

R013

$41.00

Temperature Probe

Replacement Bead Wire Temperature Probe
Add to Cart

R007

$11.00

9V Battery

9V Battery
Add to Cart

R065

$32.00

Universal Plug Kit for AC Adapter

Set of Three International Power Plugs for AC Adapter
Add to Cart

R157

$32.00

AC Adapter

AC Adapter
Add to Cart

E200

$99.00

Extended Warranty

2-Year Extended Warranty
Add to Cart
C651 6" (152mm) Chart 7-Day, -50 to 50 F/C $40.00 Add
C652 6" (152mm) Chart 24-Hour, -50 to 50 F/C $40.00 Add
C653 6" (152mm) Chart 7-Day, 0 to 50 or -50 to 0 F/C $40.00 Add
C654 6" (152mm) Chart 24-Hour, 0 to 50 or -50 to 0 F/C $40.00 Add
C655 6" (152mm) Chart 7-Day, 50 to 100 F/C $40.00 Add
C656 6" (152mm) Chart 24-Hour, 50 to 100 F/C $40.00 Add
C657 6" (152mm) Chart 7-Day, 0 to 100 or -100 to 0 F/C $40.00 Add
C658 6" (152mm) Chart 24-Hour, 0 to 100 or -100 to 0 F/C $40.00 Add
C659 6" (152mm) Chart 7-Day, 0 to 250 F/C $40.00 Add
C660 6" (152mm) Chart 24-Hour, 0 to 250 F/C $40.00 Add
C661 6" (152mm) Chart 7-Day, 0 to 500 F/C $40.00 Add
C662 6" (152mm) Chart 24-Hour, 0 to 500 F/C $40.00 Add
P222 6 Red Pens $45.00 Add

How do I adjust the pens?

Pen adjust may be needed if the pen(s) and display do not match.  Before proceeding check your calibration date, the unit may be due for a recalibration, if so contact Dickson.

While the unit is on, press and hold both the Pen Home button and the On/Off button (making sure to press the Pen Home button first so the unit will not turn off). The led will blink rapidly between amber and green for about five seconds, the LED will then turn green, release the Pen Home and On/Off buttons. The led will flash amber and green for one second and the led will turn off.

One pen model: The red pen will move to the outer edge of the chart and is ready to be adjusted. Use the Adjust-Up and Adjust-Down buttons to move the pen to the maximum temperature line on the chart. Once the pen is set, the Pen Home button will move the pen to reaffirm the new pen position. Press the On/Off button to exit pen home adjust.

Two pen models: Both pens will move to the outer edge of the chart, and then the shorter red pen will move to the current position. Use the Adjust-Up and Adjust-Down buttons to move the pen to the maximum temperature line on the chart. Once the shorter red pen is set, the Pen Home button will move the shorter red pen to the outer edge of the chart and the longer blue pen will move to its current position. The Adjust-Up and Adjust-Down buttons will adjust the longer blue pen position. Once the pen is set, the Pen Home button will move the longer blue pen to the outer edge of the chart and the shorter red pen will move to its new position. Each time pen home is pressed the two pens will switch positions (moving the most recently adjusted position) until the On/Off button is pressed to exit pen adjust mode.

Note: Pressing the On/Off button will exit the adjustment and return the unit to normal operation. Each time the pen home or On/Off button is pressed, the adjustment currently in progress will be stored. The unit will take one minute to exit Pen Adjust Mode once the On/Off button is pressed.

How do I set the Alarm(s)?

1. Alarm on or off
2. Pen 1 alarm min
3. Pen 1 alarm max
(if it is a two pen unit the following states also exist)
4. Pen 2 alarm min
5. Pen 2 alarm max

To set the alarm, make sure unit is on and press and hold the Alarm button. The LED will blink red rapidly for about five seconds, and then the led will go solid green. Release the Alarm button and the led will turn red. At this point the display will show the following: ON with a delta symbol, or OFF without a delta
symbol.

Pressing either the Adjust-Up or Adjust-Down buttons, located on the back of the unit next to the dip switch, will toggle the alarm on/off.

Pressing Pen Home will scroll to the next alarm option. The options are as follows:

In order to set pen alarm minimums and maximums, pressing the Adjust-Up will increase the alarm value, and pressing the Adjust-Down will decrease the alarm value. There is acceleration if the Adjust-Up button is held down. Repetitively pressing the pen home button will scroll through the five options until the alarm button is pressed to exit from alarm adjust. Each press of the Pen Home or Alarm button will store the new settings. The unit will take one minute to exit Alarm Set Mode once the Alarm button is pressed.

If the alarm is triggered, ALRN will show on the display, the led will show as solid red and the alarm will sound. Press the Alarm button to silence Audible Alarm.

What do the different colors on the LED Light mean?

Solid Green - AC Power with Battery Backup
Blinks Red - AC Power with Low Battery or No Battery

Blinks Green - Battery Only
Solid Red - Battery Only (Low Battery)

What if my instrument turns off?

  • Check AC adapter connection

Why is my LED flashing red?

Untitled Document
  • When the backup battery is low, the LED will flash red until the battery has been replaced.

Why is PROB displayed?

Probe not plugged into recorder.

Plug K-thermocouple into back of recorder