Maintenance Instructions; Troubleshooting - Velleman DCA150B Bedienungsanleitung

1. Introduction
To all residents of the European Union
Important environmental information about this product
This symbol on the device or the package indicates that disposal of the device after its lifecycle could harm the
environment. Do not dispose of the unit (or batteries) as unsorted municipal waste; it should be taken to a specialised
company for recycling. This device should be returned to your distributor or to a local recycling service.
Respect the local environmental rules.
If in doubt, contact your local waste disposal authorities.
Thank you for buying the DIGITAL CALLIPER! Read this manual carefully before bringing the device into service.
2. Specifications & Functions
Measuring range
0-150mm / 0-6"
Data output
Maximum measuring speed:
Display:
Battery:
Operating temperature:
Storage temperature:
Operating humidity:
1. ON / OFF key
2. METRIC / INCH change over key (true conversion)
3. Zero setting (resets any value to zero for reference)
4. Battery cover

3. Maintenance Instructions

1. Keep the device and the battery compartment clean and prevent liquids from entering the electronic part to avoid damaged
electronics.
2. Clean the device with petrol, lubricate the body with some clock oil. Acetone and alcohol should not be used.

4. Troubleshooting

Problem
The 5 digits change every second
Displayed value doesn't change.
LCD shows 000.00mm / 00.000in
Function keys do not work
Calliper does not measure
accurately
No display on LCD screen
5. Applications (see p. 6)
For more info concerning this product, please visit our website www.velleman.eu.
The information in this manual is subject to change without prior notice.
DCA150B_v2
DCA150B – DIGITAL CALLIPER
Resolution & Repeatability
0.01mm / 0.0005"
Serial output for interface with host computer or printer
1.5m/sec or 60"/sec
LCD, features minus sign "-", character in 6.35mm / 0.25" height for 5 digits, small digit "5"
and "IN" indication for inch measuring unit
one 1.5V silver oxide battery for one year of continuous use.
Low-battery warning by flashing display.
0°C ∼ +40°C
-20°C ∼ +70°C
0 to 80%
Cause
Battery voltage is under 1.45V
Circuitry malfunction
One of the keys is short circuited
Key spring is bent or deformed
Sensor is dirty
1) No battery contact.
2) Battery voltage is under 1.1V.
Replace battery.
Remove the battery and put it back after 30 seconds.
Remove the cover & adjust key spring position
Remove the cover & adjust key spring position
Remove the cover and slider assembly, clean the
sensor with pressure air (≤51kg/cm²), and clean it
with a little petrol for dirt prevention.
1) Restore battery contact.
2) Replace battery
2
Accuracy
0.02mm / 0.0001"
Solution
VELLEMAN