Quotation for Domestic Dirt Thermal Resistance Meter

MS-8150 typeOnline dirt thermal resistance meterFeatures and Applications
*LED backlit 2.8-inch color intelligent controller with clear display and lower power consumption.
*There are three types of curves: real-time curve, historical curve, and fitted curve
*Simultaneously equipped with sensor fault analysis.
*It has multiple language switching functions.
*Accurate temperature measurement with a resolution of 0.01 degrees.
*Simultaneously measure the thermal resistance and deposition rate of dirt.
*Users can calculate the annual fouling thermal resistance by fitting the curve.
*There is a current amplifier in front of the sensor, and the wiring between the instrument and the sensor can be extended
(Transmission distance greater than 500 meters)
*PhotoMOS optocoupler relay with four-way vertical control, unlimited lifespan.
Alarm, control, pulse output and other functions can be configured arbitrarily.
*Equipped with two high-resolution isolated 0/4-20mA outputs, configurable.
(The two routes are also isolated from each other)
*One way isolated 485 communication, configurable as MODBUS communication.
*Applied to industrial water, chemical, pharmaceutical, environmental protection, printing and dyeing, metallurgy, electronics
Electroplating, water treatment, aquaculture and many other industries.
MS-8150 typeOnline dirt thermal resistance meterMeasuring principle
According to the HG/T 2160-91 standard for water cooling simulation test, the thermal resistance R0 of the cleaning tube is calculated
R0 = PI*D*L*3600/（4186.8*G）*((T-ti)/(to-ti)-0.5)
In the formula: R0- thermal resistance of the cleaning tube, D - inner diameter of the test tube, G - cooling water flow rate, T, steam temperature
Ti - cooling water inlet temperature, to - cooling water outlet temperature, 4186.8- heat capacity of water
The effective heat transfer length of the L-test tube is 3600, which is a value converted from hours to seconds.
By using the same method to calculate the instantaneous thermal resistance Rs, the instantaneous fouling thermal resistance Rsi can be obtained by the following equation:
Rsi = Rs - R0
Main technical indicators
Measurement range dirt: 0-9.999 * 10-4m2k/w deposition: 0-100.0 mcm
Measurement resolution dirt: 0.001 deposition: 0.1 temperature: 0.01 flow rate: 0.001
Display mode: 320 * 240 pixel true color display, LED screen
Relay output 4-channel configurable PhotoMOS optocoupler relay
Can be set to work in: alarm, control, pulse mode
60VDC/1A (load)
Current output isolation, high resolution: 0.0003mA, accuracy: ± 0.01mA
Can be configured to output measurement or temperature values (0/4~20mA)
刷新率： 0.5S
Power supply (18-30) VDC
Power consumption: 3W
Working conditions: Working temperature: -10~75 ℃
Humidity: 0-95%, no dew point
Insulation level: 2
Pollution level: 2
Dimensions: 120 × 120 × 59mm (length × width × depth)
Hole size: 112 × 112mm (for panel installation)
Packaging shell protection level: NEMA 4X/IP65 (front panel)
Disk mounted gasket: chloroprene rubber
Screen: Synthetic polyester
Button: 8 encapsulated silicone keys
Weight: Approximately 300g
Standard anti-interference performance: EN50082-2
Radioactivity: EN55011
Safety: EN61010