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Universal Input Chart Recorder

This product has been replaced by the ET855

Our ET8 has been completely redesigned and now goes by ET855.

Click on the link to view and order the NEW ET855 Chart Recorder.

ET855

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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.

Frequently Asked Questions

  • The digital board is no longer communicating with the power board. UNIT REQUIRES SERVICE.

Is the transmitter being used actually putting out a signal?

Has the proper range and input signal been selected?

Is the unit locked up? This can be determined by taking notice of the cursor on the bottom of the display moving back and forth. If it's not moving, press the up arrow button. If the cursor starts to move after the arrow button was pressed, then that confirms that the unit is in battery mode, in which case the unit will only update periodically to preserve battery life. So, if changes occur between updates, the unit won't capture and record those changes. (Very important draw back for battery mode)

If the cursor does not start moving, after the arrow button is pressed, then the unit is locked up. This is usually caused by an interruption in power, in which case the unit will not operate at all. To correct this, simply remove batteries and transformer, wait about 1-minute, and power back up. This does not effect the units' functionality or calibration in any way.

  • Make sure that dip switch # 7 is off; this switch controls the display.
  • Make sure dip switch # 8 is off; this switch locks out the keypad.
  • Remove all batteries and adapter, wait about 1-minute to let the unit discharge. The unit should respond when the adapter is plugged back up.
  • Is the proper power adapter being used? It should be 6-Volts 700-800 milliamps.

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.

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.

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)

  • Try slower, firmer key presses.
  • Maybe the unit is locked up. If the chart recorder is locked up there will be no response to button presses, however, the unit may appear to be working, but the readings won't change and the chart will not rotate. To correct this, remove ac and battery power then re-power.
  • Check AC adapter connection

Is there a battery in the unit?

Is the battery good?

Is the battery in correctly?

If the power outage was only momentary, the unit may not have had enough time to recognize this and switch to battery mode (The unit may lock-up or shut off in this situation)

No, there is no way to disable one of the channels.

Chart hung up or restricted, (ripped chart, pen lifter etc.)

Unit may be "locked up", this can be confirmed by pressing any of the buttons on the keypad, if the unit is locked up there will be no response to button presses and the recorder may appear to be working, but the readings won't change, also the chart will not rotate. Remove power and battery for a minute or two, and then re-power.

If the unit is not locked up, manually advance the chart one full rotation with the chart rotation button to insure that the gears are not binding or slipping .

The cause of this could be because Hysteresis or wrong chart.

Hysteresis is a naturally occurring mechanical discrepancy up to 2% of range

Make sure the proper chart is installed and that dipswitches are set for that chart.

 

Dip switches set for a specific range, but using chart for another range, or vice versa.

Pen(s) not inserted on pen arm(s) all the way

Pen home not set properly. To check and adjust PEN HOME setting, press and hold the Chart Rotation and Alarm button, then press the On/Off button. Hold down all three buttons until the unit comes on, the light should be flashing amber. When the amber light becomes steady, press the Alarm button twice, the light should alternate between Red and Green and the pen will move toward the top of the chart. The pen should stop on the Maximum temperature line of whatever chart is being used. If the pen is not exactly on the max temp line, use the Alarm button to move the pen down and the Chart Rotation button to move the pen up. If you have a, you can toggle between the pens by pressing and holding the alarm button until the pens crisscross each other. Turn the unit off then back on to store the settings.

Gears jammed or slipping (You should hear the gears grinding)

The chart may be hung up or restricted, possibly caused by a rip on the outer edge of the chart or the chart may be caught between the arm and pen arm platform.

Incorrect chart installed for the selected chart speed.

Manually advance the chart one full rotation with the chart rotation button to ensure that the gears are not binding or slipping.