
NJDR-3 Concrete rapid freeze-thaw testing machine
简要描述: GB/T50081-2002, GB/T50082-2009, JTGE30-2005, JG/243-2009, JGJ/T193-2009, ASTM C666, SL/T352-2020, JTS/T236-2019, JTG3420-2020, T0596-2020
产品介绍
1. Standard:
GB/T50081-2002, GB/T50082-2009, JTGE30-2005, JG/243-2009, JGJ/T193-2009,
ASTM C666, SL/T352-2020, JTS/T236-2019, JTG3420-2020, T0596-2020
2. Product features:
The main functions of the system include:
Display and record specimen center temperature and circulating liquid temperature;
Freeze-thaw process conversion and circulating liquid temperature control;
Number of freeze-thaw cycles control;
Compressor exhaust pressure, suction pressure and motor unit temperature rise protection;
Circulating liquid flow protection and over temperature protection;
Motor overload protection, etc.
The whole freeze-thaw test process is completely automatic, photoelectric alarm is given in case of failure, and corresponding protection is taken by itself.
The equipment adopts the internal and external machine separation layout, the cooling and heating and circulating pump are placed outdoors, and the test box and control system are placed indoors, which effectively solves the problem of high temperature and noise in the test room caused by the integrated machine.
Model | NJDR-9 | NJDR-5 | NJDR-3 | |
Specification | Separated | Separated | Integrated | |
Main parameter | Max specimen quantity | 28pcs | 16pcs | 10pcs |
Temperature | -25℃~25℃ | |||
Uniformity | Between every two points<2℃ | |||
Test precision | ±0.5℃ | |||
Display Resolution | 0.1℃ | |||
Outside machine dimension | 1.3*0.5*1.23m | 1.35*0.6*1.4m | 1.65*0.85*0.88m | |
Inside machine dimension | 1.53*0.8*0.85m | 0.95*0.6*1.4m | ||
Specimen(mm) | 100*100*400 | |||
Working power | 9.7KW | 6.7KW | 3.5KW | |
Freeze-thaw cycle | 2.5~4hours,The melting time is not less than 1/4 freeze-thaw cycle | |||
Medium | -45℃ Antifreeze solution | |||
Medium qty | The liquid surface should be higher than specimen 10~15mm. | |||
Voltage | 3N380V 50Hz |