Manual
3
1 Introduction
The digital concrete test hammer PCE-HT-225E is a device with digital display and voice function. It is a
high-tech product which has been tested specially for concrete compressive strength when the material
even with a low compressive strength must not be damaged. The digital test hammer is suitable for quick
and easy determination of concrete strength and hardness of building materials. The digital and voice
function enables a high number of tests with better quality results.
2 Safety notes
Please read this manual carefully and completely before you use the device for the first time. The device
may only be used by qualified personnel and repaired by PCE Instruments personnel. There is no
warranty of damages or injuries caused by non-observance of the manual and safety notes.
• The device and its accessories should be used according to the manual.
• The device should be protected from water, form falling, from strong external pressure, explosions and
high temperatures.
• The circuit of the unit should not be removed or changed.
• The replacement of the batteries or the internal circuit should be performed by a qualified person.
• Always use the device with both hands.
• During the calculation of the test values errors can occur due to algorithmic rounding and inaccuracies.
If the values of the device and self-calculated values differ a lot, take the self-calculated values.
• The device should to be used and stored with great care.
• The device itself should not be located close to strongly magnetic environments.
• If the device is damaged, switch it off immediately and contact the manufacturer.
• The test intervals must not be less than one second as this could lead to accuracy errors.
This user's handbook is published by PCE Instruments without any guarantee.
Failure to comply with these operating instructions and the disregard of safety will void the warranty.
We expressly point to our general guarantee terms which can be found in our general terms of business.
If you have any questions please contact PCE Instruments.
3 Specification
Nominal kinetic energy
2,207 J (2.207 Nm)
Spring constant
785 N/m
Elongation of the spring
75 mm ±0.3 mm
Average rebound value
80 ±2
Radius of the spherical tip
25 mm ±1 mm
Adhesion of the measurment tip
0.65 … 0.15 N
Interface
USB 2.0
Memora capacity
Memory for more than 200 standard components
Display
LCD 176 x 220
Power supply
1 x 3.6 V rechargeable Lithium battery
Weight
1.1 kg
Dimensions
ø 54 x 280 mm
