一、产品简介：
初期干燥抗裂性试验仪是检测仪器，用于建筑涂料、室内外建筑腻子在规定风速的条件下的初期干燥抗裂性试验。该仪器根据 标准GB9779—88设计制造的QKL型主要适用于建筑涂料、室内外建筑腻子在规定风速的条件下的初期干燥抗裂性试验。
Product introduction:
一，The initial dry crack resistance tester is a testing instrument for the initial dry crack resistance test of architectural coatings, indoor and outdoor building putty under the conditions of the specified wind speed. The QKL type designed and manufactured by this instrument according to the standard GB9779-88 is mainly applicable to the initial dry crack resistance test of architectural coatings, indoor and outdoor building putty under the conditions of specified wind speed.
二、技术参数：
♦仪器总功率：100w
♦风机风速：3米/秒±03（可无级调速）
♦风速仪：0-10米/秒
♦外形尺寸：1000X300X360mm
♦仪器重量：27kg
Technical Parameters:
♦ Total instrument power: 100w
♦ Fan speed: 3m / s ± 03 (stepless speed regulation)
♦ Anemometer: 0-10 m / s
♦ Dimensions: 1000X300X360mm
♦ Instrument weight: 27kg
三、工作原理：
在风洞中置有与空气流方向平行的试板架，起动轴流风机后，用风量调控装置将风速调控在3±0.3m/s内，将涂刮好的试板置于检风洞中的试板架上，按产品标准要求调节干燥控制时间，待到时间后，自动停机，目测试板表面有无裂纹出现。
Third, the working principle:
A test plate frame parallel to the air flow direction is placed in the wind tunnel. After starting the axial flow fan, the wind speed is controlled within 3 ± 0.3m / s by the air volume control device, and the coated test plate is placed in the wind detection tunnel. On the test plate rack, the drying control time is adjusted according to the product standard requirements. When the time reaches, the machine will automatically stop and test for cracks on the surface of the board.
四、操作规程：
♦ 风速计的操作：
（1） 将1号电池4节置入风速仪底盖内，测头插头插入仪器插孔内。
（2） 仪表盘电源转换开关置于“通”的位置，校正开关置于“满度”位置，调节“满度粗调”及“满度细调”旋钮，使电表指针在满度刻度位置。
（3） 校正开关置于“零位”位置，调节“零位粗调”，及“零位细调”旋钮，使电表指针在零点位置。
（4） 反复操作（2）、（3）项，直至调准为止。
♦ 计时器的操作：
本计时器延时范围0.01秒—99小时99分，任意预置，中间按键为时段开关。
h (小时) m (分) s （秒）
_h _m _s 代表为倒时
h m s 代表为正计时
+ 为增加键 — 为减少键
将计时器调整在所需要的时间内。
注：此项工作在开机前预置，开机后不得擅自变动计时器的预置键，否则计时无效。
♦ 按涂料腻子产品说明中规定用量的主涂料，腻子涂布在已准备好的试板表面（底涂料之上）后，立即置于风洞内试板架上，试板与气流方向平行放置。此试验机一般可以放置二个试件做平行试验。
♦ 将试验机电源打开，电源指示灯亮，轴流风机起动，计时器开始计时。
♦轻轻拉动测头螺塞，露出热球，测头红点对准风向，以垂直于风向插入测试孔内，插入深浅一般为试板的中间位置，调节风速控制旋钮，观察风速计指针，使风向调控在3±0.3m/s以内，风干工作始。
♦当计时器到达预置时间后，试验机停止工作，取出试板，目测表面有无裂纹。
Fourth, operating procedures:
♦ Operation of anemometer:
(1) Put 4 AA batteries into the anemometer bottom cover, and insert the probe plug into the instrument jack.
(2) The power switch of the instrument panel is set to the "ON" position, the calibration switch is set to the "full-scale" position, and the "full-scale coarse adjustment" and "full-scale fine-adjustment" knobs are adjusted so that the meter pointer is at the full-scale scale .
(3) Set the calibration switch to the "zero position", adjust the "zero coarse adjustment" and "zero fine adjustment" knobs so that the meter pointer is at the zero position.
(4) Repeat operations (2) and (3) until the alignment is completed.
♦ Timer operation:
The delay range of this timer is 0.01 seconds-99 hours and 99 minutes, which can be preset arbitrarily, and the middle button is the time period switch.
h (hours) m (minutes) s (seconds)
_h _m __ s stands for time
H, m, s, s, s
+ Is the increase key — is the decrease key
Adjust the timer to the required time.
Note: This work is preset before booting. Do not change the timer's preset key after booting, otherwise the timing will be invalid.
♦ According to the main amount of paint specified in the paint putty product description, putty is applied on the surface of the prepared test plate (on top of the primer) and immediately placed on the test plate rack in the wind tunnel. . This testing machine can generally place two test pieces for parallel testing.
♦ Turn on the power of the testing machine, the power indicator light is on, the axial fan starts, and the timer starts counting.
♦ Gently pull the plug of the probe to expose the hot ball. The red dot of the probe is aligned with the wind direction and inserted into the test hole perpendicular to the wind direction. The depth of insertion is generally the middle position of the test plate. The wind direction shall be adjusted within 3 ± 0.3m / s, and the air-drying work shall begin.
♦ When the timer reaches the preset time, the test machine stops working, remove the test plate, and visually inspect the surface for cracks.
五、仪器结构：
试验机主要由轴流风机，试验风洞，试片架和风量调控装置，计时器，风速计等组成。
注意：整机保险置于电源擦座内
Five, instrument structure:
The testing machine is mainly composed of an axial flow fan, a test wind tunnel, a test piece holder and an air volume control device, a timer, and an anemometer.
Note: The whole machine insurance is placed in the power supply wiper seat
