QKL Initial Dry crack resistance Tester Rongjida Architectural coatings and indoor and outdoor architectural putty

QL

Dry crack resistance Tester

Introduction

Rongjida QKL Initial Drying Cracking Resistance Tester uses an axial fan (stepless speed regulation) to supply air, and is used to test the cracking resistance of cladding architectural coatings or indoor and outdoor putty coatings at the initial drying stage. The Total power of the QKL initial drying crack resistance Tester is 100w. It is designed and manufactured according to the national standard GB9779-88 and is widely used in the field of architectural coatings.

product structure

The composition and structure of QKL initial dry crack resistance Tester include: axial flow fan, test piece rack and air volume control device, test wind tunnel, anemometer, timer, etc.

Note: The fuse of the whole machine is placed in the power wiper seat

Product principle

A test panel rack parallel to the air flow direction is installed in the wind tunnel. After starting the axial flow fan, use the air volume control device to control the wind speed within 3±0.3m/s, and then put the coated test panel on the wind test On the test plate rack in the hole, adjust the drying control time according to the product standard requirements. After the time is up, the QKL initial drying crack resistance Tester will automatically stop. At this time, check whether there are cracks on the surface of the test plate.

Steps

1. Operation of the anemometer

(1) Put 4 AA batteries into the bottom cover of the anemometer, and insert the probe plug into the socket of the QKL initial dry crack resistance Tester.

(2) Set the power conversion switch on the instrument panel to the "on" position, set the calibration switch to the "full scale" position, adjust the "full scale coarse adjustment" and "full scale fine adjustment" knobs, so that the pointer of the meter is at the full scale position .

(3) Set the correction switch to the "zero position", and adjust the "zero position rough adjustment" and "zero position fine adjustment" knobs to make the meter pointer at the zero position.

(4) Repeat items (2) and (3) until it is adjusted.

2. Operation of the timer

The delay range of this timer is 0.01 seconds to 99 hours and 99 minutes, which can be preset arbitrarily, and the middle button is a time switch.

h (hour) m (minute) s (second)

_h _m _s stands for countdown

 h m s stands for positive timing

+ is the increase key — is the decrease key

Adjust the timer for the desired time.

Note: The adjustment of the timer should be preset before starting up, and the preset key of the timer cannot be changed casually after starting up, otherwise the timing will be invalid.

3. According to the amount of main paint specified in the paint putty product description, after the putty is coated on the surface of the prepared test panel (on top of the primer), immediately place it on the test panel rack in the wind tunnel, and the test panel is parallel to the airflow direction place. QKL initial drying crack resistance Tester can generally place two test pieces for parallel test.

4. Turn on the power of the QKL initial drying crack resistance Tester, the power indicator light is on, the axial flow fan is started, and the timer starts counting.

5. Gently pull the screw plug of the measuring head to expose the hot ball, align the red point of the measuring head with the wind direction, insert it into the test hole perpendicular to the wind direction, the insertion depth is generally the center of the test plate, adjust the wind speed control knob, and observe the anemometer pointer , so that the wind direction is regulated within 3±0.3m/s, and the air-drying work begins.

6. When the timer reaches the preset time, the QKL initial drying crack resistance Tester stops working, take out the test board, and visually test whether there are cracks on the surface of the board.

Pictures

Packing list：complete-built unit X1, manual X1, certificate of conformity X1, warranty card X1

[Note]Because the manufacturer's packaging may be updated or upgraded, the detailed packaging list shall be subject to the latest standard configuration of the manufacturer.