Product Usage:

The constant temperature and humidity weighing system/low concentration particle constant temperature and humidity weighing/HJ836-2017 constant temperature and humidity weighing system places a high-precision balance in the high-precision constant temperature and humidity system, places the weighed sample in the system, balances for 24 hours, and then manually weighs it. This system overcomes the impact of temperature and humidity changes in the laboratory environment on weighing results and improves the accuracy of weighing.

Box structure:

1. It is processed and formed using CNC machine tools, with a beautiful and elegant appearance, and adopts a non reactive handle for easy operation.

2. The inner liner of the box is made of imported stainless steel plate, and the outer liner of the box is made of A3 steel plate spray painted, which increases the appearance texture and cleanliness.

3. The compressor is separated from the casing to avoid interference from the vibration of the constant temperature system on the balance.

4. There is a shock-absorbing platform inside the box, and there is a PVC anti-static board on the shock-absorbing platform

5. The door of the constant temperature and humidity system box is a full frame transparent window with two operation entrances. Latex long gloves are used for isolation to avoid the influence of manual operation on the constant temperature and humidity conditions.

Control system:

1. The temperature control adopts a touch screen for direct display, sets the required temperature and humidity, and can read relevant data.

2. The refrigeration unit adopts the original French "Taikang" fully enclosed compressor.

Protection system:

Overall equipment overheating; Overall equipment under phase/reverse phase; Overall equipment overload; Refrigeration unit overpressure; Overall equipment timing;

Other protections include leakage, operation indication, automatic shutdown after fault alarm, etc.

Compliant with standards:

GB2423.1-2001 Test A "Low Temperature Test Method"; GB2423.2-2001 Test B "High Temperature Test Method";

GB2423.3-93 Test Ca "Constant Damp Heat Test Method" GBT1740-2007 Determination of Moisture Resistance of Paint Films

Meet the standards HJ618-2011, HJ656-2013, and HJ836-2017 of the Ministry of Environmental Protection for the determination of low concentration particulate matter in fixed source exhaust gas by weight method; According to the regulations, a high-precision balance should be placed inside a constant temperature and humidity chamber, and the weighed sample should be weighed after being equilibrated for 24 hours. The constant temperature and humidity adjustment ensures the accuracy of the sample weighing results and the stability and accuracy of the sample weighing data. Non standard products can also be manufactured according to customer requirements.

Free home delivery and installation and debugging instructions (until the customer's employees operate independently and are satisfied)

Model and parameters:

Model, working size, mm, power

H836plus 600×750×500（mm） 2.5KW

Temperature control range: 15 ℃~30 ℃ (adjustable arbitrarily)

Temperature control accuracy: ± 1 ℃

Temperature fluctuation: ± 0.5 ℃ (when unloaded)

Temperature deviation: ≤± 2 ℃ (when unloaded)

Humidity range: 30-70% R · H (relative humidity within the range of 50 ± 5% R · H)

Humidity fluctuation: ± 5% R.H

Humidity resolution: 0.1% R.H

The average rate of temperature rise and fall is 0.7 ℃~1.0 ℃/min

Power requirement: 380V ± 10%; 50 Hz； Three phase four wire+grounding wire

Protection level: Level 4

Power supply inside the box: 220V 50HZ

Different precision scales can also be optionally selected