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Shanghai Shangdeng Experimental Equipment Co., Ltd
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Shanghai Shangdeng Experimental Equipment Co., Ltd

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    Room 202, Jingdongyuan 13, Da Shanghai International Garden, 1555 Caobao Road, Shanghai

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Constant temperature and humidity weighing system

NegotiableUpdate on 05/06
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Overview

The PT-PM2.5 constant temperature and humidity weighing system is designed to meet the requirements of the Ministry of Environmental Protection's new HJ836-2017 "Determination of Low Concentration Weights for Fixed Pollution Sources" regarding the weighing conditions after sampling. A high-precision balance is placed in a constant temperature and humidity environment, and the sample to be weighed is placed in a constant temperature and humidity chamber for 24 hours to balance before weighing. This product solves the problem of the influence of temperature and humidity changes in the laboratory environment on the weighing results of samples, greatly improving the accuracy of weighing sample results. This product is also used for weighing other samples with high requirements for symmetrical environments.

Product Details

Overview:

PT-PM2.5Constant temperature and humidity weighing systemIt is to meet the new national standard of the Ministry of Environmental ProtectionHJ836-2017The requirements for weighing conditions after sampling in the "Determination of Low Concentration Weights for Fixed Pollution Sources" stipulate that a high-precision balance should be placed in a constant temperature and humidity environment, and the sample to be weighed should be placed in a constant temperature and humidity chamber for equilibrium24Weigh again after hours. This product solves the problem of the influence of temperature and humidity changes in the laboratory environment on the weighing results of samples, greatly improving the accuracy of weighing sample results. This product is also used for weighing other samples with high requirements for symmetrical environments.

Key Features:

1High precision constant humidity control, meeting national standardsHJ836-2017andHJ656-2013requirement.

2High system stability and filtering process30Less than minutes. After stabilization, weighing tests can be conducted at any time without waiting for the compressor to stop before weighing.

3The human-machine interface adopts4.3The touch screen is beautiful and durable, displaying temperature and humidity values truthfully and allowing for viewing of temperature and humidity fluctuation curves through temperature and humidity curves. Historical temperature and humidity data can be recorded and viewed through tables.

4The constant temperature and humidity box adopts a reasonable circulating air method, with soft wind and reasonable wind direction, which not only ensures uniform temperature and humidity inside the box, but also does not interfere with the weighing of the balance due to strong wind.

5The compressor unit and casing are transported as a whole/The split operation structure not only facilitates transportation and installation, but also effectively avoids the influence of compressor vibration on the weighing balance, overcoming the problem of shock resistance and noise reduction.

6The heating and cooling system is independent.

7Standard purified water circulation supply method for humidification.

8Supply air circulation system: temperature resistant and low-noise air conditioning motor, multi blade axial flow fan.

9There are two operation entrances on the box, which are isolated with latex gloves to avoid the influence of manual operation on constant temperature and humidity conditions.

10Overall equipment overheating, overload, leakage protection, compressor overpressure protection, low voltage protection.

11Configure different sample holders to weigh different samples.

12Optional high-precision 1/100000 electronic balance, with Chinese operating system, dual range, fully automatic calibration.

Technical Indicators:

Main parameters

parameter range

Temperature range:

10-60 ℃, temperature can be set at any point (factory setting is 22 ℃)

Humidity range:

40%RH-70%RH, Can be set at any point (factory set to 50% RH)

Temperature fluctuation:

±0.2℃

Temperature deviation:

±0.4℃

Temperature uniformity:

± 0.4 ℃ (i.e. 0.8 ℃)

Humidity fluctuation

±2.0%RH

Humidity deviation:

±1.5%RH

Humidity uniformity:

± 1.5% RH (i.e. 3.0% RH)

Heating and cooling rate:

≤(0.6-1.2)℃/min

Dimensions (length * width * height):

900*800*1500mm

power supply

220-240VAC 50/60HZ