Page 1623 - MiSUMi 2025

Economy series Instructions Selection Method Economy series
Cartridge Heaters Cartridge Heaters

QMounting Method Q Heater Selection
· Determine the required heater power (W)
It can be calculated with the following formula considering to the mass, specific heat, temperature rise, and the heating time required to reach
One-sided clearance within · Please minimize the installation clearance of the set temperature of the heated object.
0.05mm the heated metal block
When machining the metal block mounting Required Heater Power (kW)= Mass of the heated object (kg)×Specific heat of the heated object (kcal/kg°C)×Temperature rise of the heated object (°C)
holes, it is recommended that the one-sided 860×Heating Time (h)×Efficiency (j)
Mounting Hole
(Reamed Hole) clearance is 0.05mm or less
The efficiency varies with heat preservation, thermal insulation, heater settings, etc, so it is difficult to calculate correctly, the general in the
*The tightness between the heater and the object to be heated industry is 0.2 to 0.5.
affects the life of the heater. Moreover, the large gap will
prolong the heating time and slow down the response speed of Specific Gravity·Specific Heat of Main Materials Example: if you want to make 200×100×50 (mm) stainless steel block heater with a
temperature control. Drilled holes can also be used, but mass around 8kg heated to 180°C.
reamed holes are recommended for all heater mounting holes. Material Specific Gravity Specific Heat The heating time of a block heater from 20°C to the set temperature is set to 30 minutes.
3
*The service life of the heater will change greatly due to the (g/cm ) (kcal/kg°C)
usage environment. Improper operating temperature, Aluminum 2.80 0.230 8×0.11×(180-20)
temperature adjustment methods,etc. may result in (A7075P Category) Required Heater Power (kW)= =1.1 (kW)
disconnection within a short time period, so it is recommended Steel 7.85 0.113 860×0.5×0.3
to prepare a spare cartridge heater in advance. =1100 (W)
Cartridge Heaters Stainless Steel 7.82 0.110 *For standard specifications, the efficiency is set to 0.3. Please refer to the following chart for the Heaters Cartridge
Brass 8.70 0.100 measured data of temperature rise time classified by power.
P.24-006
· Determine the number of heaters and the power of each heater (W).
Q Examples of Use The number of heaters is determined according to the size of the heated object, and the total power (W) is the power required by the heated object.
Example: Use 2 heaters of 550 (W) (1100W in total). Sensors Temperature
Q Cartridge Heater Selection
P.24-014
1 Determine the diameter of the heater
2 Determine the length of the heater Controllers Temperature
3 Determine the power required by the heated object (W)

Q Measured data of temperature rise time classified by power P.24-022
500 Plates
Cartridge Heaters 450 Heat Insulating
P.24-009 Power 78W
Cartridge Heaters 400 Power Density 5W/cm 2
P.24-009 P.24-025
350 Power 118W 24
Temperature (°C) 250 Power 157W Heat Insulating Plates Heaters / Temperature Sensors /
Metal Plate 300 Power Density 7.5W/cm 2

Power Density 10W/cm 2
200
150 Power 196W
Power Density 12.5W/cm 2
Heating the water tank through metal plate Heating the press
100
Power 235W
50 Power Density 15W/cm 2
QPrecautions for use 0 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
Time (minutes)
1 Do not leave the heater operating in open air. *Heater Used: Diameter φ10, Length 65mm (Heating Part 50mm)
2 Please prevent the wire and insulator part of the heater from water and wet or damp area, otherwise it *Heated Object: Aluminum (60×50×20)
*The temperature is the central surface temperature of aluminum.
may cause electrical leakage or short circuit.
3 The nickel bar at the root of the wire may break after repeated bending. Q Temperature Control Temperature Sensors
4 When taking out the heater from the heated object, please be sure to disconnect the power supply, and · Although the position of the temperature sensor should
do not touch the heater that has just been disconnected from the power supply. be determined according to the setting conditions of the
5 Abnormal short ON→OFF cycles will adversely affect the life of the heater, and it is recommended to use heated object (metal block), it is recommended to set it
as close to the heater as possible, in order to prevent
a PID-controlled controller. the heater from overheating.
6 Do not use power supply with a voltage exceeding the rated voltage (V). *Normally, the distance between the heater and the temperature sensor is about 10mm. 10mm Cartridge Heaters Metal Block
24-007 24-008