About the article

6-Channel Temperature Monitor & Logger

Measures from −240 °C to +850 °C

LABSPROJECT
Based on a Labs project | April 2019 | Find it here
6-Channel Temperature Monitor & Logger
Temperature is an important parameter to control in many industrial processes. At home, the fridge, freezer, heater, kitchen oven, and air conditioner all measure and adjust the temperature to get their job done. Weather stations, cars, computers, tablets and smartphones keep an eye on temperature too. Temperature may very well be the world’s most surveilled physical quantity.
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Extra info / Update
Six-channel temperature monitor, scanner cq data logger for RTD resistive Pt100 sensors.
Components
Download the BOM list
The BOM (Bill of Materials) is the technically exhaustive listing of parts and other hardware items used to produce the working and tested prototype of any Elektor Labs project. The BOM file contains deeper information than the Component List published for the same project in Elektor Magazine. If required the BOM gets updated directly by our lab engineers. As a reader, you can download the list here.
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Component list

Component List

Illustration 190118-014

Resistors (0805, 1%)

R4,R5,R6,R7,R8 = 10kΩ

R1,R20,R21,R22 = 10kΩ 0.1%

R2,R14 = 10Ω

R3 = 470Ω 0.01%

R9,R10,R11,R12,R13,R15,R17,R18,R23 = 1kΩ

R16,R19 = 12kΩ

P1 = trimmer 10kΩ

RN1 = resistor network, 6×10kΩ

 

Capacitors (0805)

C1,C19 = 1µF

C2,C5,C9,C14,C16,C28 = 10µF, 16V, Case-A

C3,C4,C6,C8,C10,C11,C12,C17,C20,C21,C22,C24,C25,C26,C27,C29,C30,C31,C32,C33,C34,C35,C36,C38,C39,C40,C41 = 0.1µF

C7 = 47µF, 25V, 6.3mm diam.

C13,C15 = 100µF, 16V, Case-C

C18,C23,C37 = 1nF

 

Semiconductors

D1,D2 = MBR140SFT1G

IC1 = LD1117DT50TR

IC2 = LD1117DT33TR

IC3 = TC7660EOA

IC4 = C8051F350-GQ, LQFP32

IC5,IC7,IC9 = 4051, SOIC16

IC6,IC8,IC10 = OP07CD

IC11 = LM336M-2.5

 

Miscellaneous

K1 = 2-way wire-to-board terminal block, 3.5mm pitch

K2 = 10-pin, 2-row pinheader, 2.54mm pitch

K3-K8 = 3-way wire-to-board terminal block, 3.5mm pitch

LCD1 = Alphanumeric LCD, 2 lines, 16 characters, 5V with backlight

S1-S4 = Tactile switch, 6×6.2mm, SMD

BOB1 = USB/Serial Bridge/BOB with suitable connectors

16-way pin socket + pinheader, 2.54mm pitch for LCD1

Elektor PCB # 130548-1

 

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