Simple Hardware knowledge base
  • Welcome
  • Simple HW
  • CHAT
  • HOW TO PURCHASE THE DEVICES
    • Whom do we sell to
    • Pricing
    • Ordering and payment
    • Delivery
    • Shipping
    • Batteries shipping
      • Lithium transportation
    • Guarantee
    • Tracking
    • Packaging
    • Accessories
    • Documentation
    • Qualified and premium partners
    • Customization
      • Custom branding
      • Custom hardware and software
      • Custom device settings from the factory
    • Customer Portal
  • PROVISIONING AND DEVICE SETUP
    • Prerequisites
    • Step-by-step provisioning
    • Physical Installation
    • Reconfiguration of the devices
    • Troubleshooting
      • Troubleshooting process
      • Steps to troubleshoot:
    • Quality control
  • PRE-SALES SUPPORT
    • Radio zones and power
    • Whitepapers
      • Tapes whitepaper
      • Machine Monitoring Whitepaper
      • Location tracking whitepaper
      • Shock/Drop Detection Whitepaper
      • Reed Switch Whitepaper
      • Temperature (cold chain) monitoring whitepaper
    • Impact and Fall Protection Rating Test
    • Webinars
    • Blog posts
    • Datasheets and certifications
  • LPWAN
    • SIGFOX
      • Introduction to Sigfox
      • Connect to Sigfox
      • Sigfox coverage
      • How to Access Data From Your Devices
      • Monarch - Multizone Devices
      • Sigfox Support
      • Devices Ideal for Sigfox Atlas Tracking
      • Geolocation precision and possibilities
    • LoRAWAN
  • SENSORS
    • Button
      • Button in API 6
    • Accelerometer
    • Magnetometer
    • Reed switch
    • WiFi module
    • Gas
    • Dry switch
    • Leak
    • Light
    • Dry Switches
    • Temperature & Humidity sensors
    • Temperature Reaction Time
    • Devices for Temperature and Humidity Monitoring
  • NEXT/API 7 GENERATION
    • Introduction
  • SIMPLE/API 6 GENERATION
    • API 6
      • Before integrating API 6 devices
      • Overview For Beginners
      • Overview for Experts
      • Device states
      • WiFi User Modes
    • User Modes
      • Mode-Independent Information And Events
        • Heartbeats
          • Heartbeat 1 and Heartbeat 2
          • Heartbeat 3
        • Appended payload
        • Alerts
        • Sensor-triggered mode-independent events
        • Analog monitoring independent events
        • Other mode-independent events
      • Standard User Modes
      • Wifi User Modes
        • Press me WiFi
        • Guard me WiFi
        • Track me WiFi
        • Trace me WiFi
        • Don’t drop me WiFi
        • Reed switch on/off WiFi
        • Light on/off WiFi
        • Temperature threshold alert WiFi
        • Temperature change alert WiFi
      • Wifi Atlas User Modes
      • Wifi SuperLocal User Modes
        • Press me WiFi SuperLocal
        • Guard me WiFi SuperLocal
        • Track me WiFi SuperLocal
        • Trace me WiFi SuperLocal
        • Don’t drop me WiFi SuperLocal
        • Reed switch on/off WiFi SuperLocal
        • Light on/off WiFi SuperLocal
        • Temperature threshold alert WiFi SuperLocal
        • Temperature change alert WiFi SuperLocal
    • Uplink
    • Downlink Information
    • Encoding
      • 8 binary flags (byte bits)
      • SimpleTime
      • SimpleTemp
        • Here are all the SimpleTemp true temperature values
        • Here are all the SimpleTemp temperature hysteresis values
      • Accelerometer Data
      • Magnetometer data
    • API 6 Reset Triggers and Configuration Loss
    • API 6 Table
    • Factory Mode
    • Device Overview
      • Device Documentation
        • SimplePack
          • Legacy
            • SimplePack 2.0 Introduction
            • SimplePack 2.0 Accelerometer Lockout (Continuous Triggering Error)
            • SimplePack 2.0 User Modes (API 5)
            • SimplePack API 2, 4, 5 and 6 comparison
        • SimpleLeak
        • SimpleIndustry And SimpleMeter
          • SimpleIndustry
          • SimpleMeter
          • Battery Replacement
            • Battery Replacement in SimpleIndustry and SimpleMeter Devices
          • SimpleIndustry CO2 or SimpleIndustry CH4 Sensors
        • CheckFox
          • Starting with the CheckFox and the CheckFox Dashboard
          • All You Need to Know About the SIM Card in Your CheckFox and GSM connectivity
          • CheckFox Device User Guide
          • Sigfox Coverage Measurement Methodology With the CheckFox
          • CheckFox Troubleshooting Guide
          • Advanced
            • Technology Used to Run the CheckFox Dashboard
            • CheckFox Dashboard Data Export
            • CheckFox Log Data Interpretation
            • CheckFox Uplink Payload Description
      • Basic operations
        • SimplePack and SimplePack Plus: Basic operations
        • SimpleLeak: Basic operations
        • SimpleMeter/SimpleIndustry: Basic operations
        • What should you see on the Sigfox Backend
    • Working With Devices
      • Device Registration
      • Device Certificates
      • Device Downlink
      • Correct Device Placement
      • Radio Zone Switch
      • Battery longevity and levels
      • Magnet Range for SimplePack 4.0 Plus Motion & Door Sensor and others
        • Magnet: 30×10×1 (magnetic force: 1.1 kg)
        • Magnet: 40×13×1 (magnetic force: 1.5 kg)
        • Magnet: 20×10×2 (magnetic force: 2 kg)
        • Magnet: 30×10×2 (magnetic force: 2.6 kg)
        • Magnet: 30×15×2 (magnetic force: 3.3 kg)
        • Magnet: 40×20×10 (magnetic force: 20 kg)
    • IO Frog
      • First Message
      • Tracing
      • WiFi Tracing
      • Door Monitoring
      • Luggage Monitoring
      • Office Chair Monitoring
      • Leak Detection
      • Temperature Monitoring
      • Public Channel Setup
      • Manhole Cover Monitoring
  • TECHNICAL SUPPORT
    • Contact Support
    • RMA Process
      • Create RMA Number
    • Sigfox Backend Access
    • IO Frog Access
    • Consulting Services and Senior Project Management
Powered by GitBook
On this page
  • Introduction
  • Environment
  • Overview of Simple Hardware devices

Was this helpful?

  1. SENSORS

Temperature Reaction Time

Introduction

Several measuring points are generally used when determining the response time. Each of them is a time period in seconds required for the sensor reading/output to reach x% of the total value change (difference in temperature).

A single time period is known as sensor response time (or thermal response time).

Percentage
Also used as
Specific term

50%

T50 or t0.5

none

63.2%

T63 or t0.63

Sensor Time Constant (τau)

90%

T90 or t0.9

none

99.3%

T99 or t0.99

5 times the Sensor Time Constant (τau)

EXAMPLE: For a temperature sensor taken out of an ice bath at 0 °C into a room at 10 °C, it will take exactly: -T50 to reach 5°C -T63.2 (Sensor Time Constant) to reach 6.32 °C -T90 to reach 9°C -T99.3 to reach 9.93°C

Please note that T100 (or 100% of the final desired temperature) will never be reached because of the laws of physics.

Environment

All the reference data must be also related to the medium used for the test - you need to keep heat transfer and circulation in mind.

Most commonly found mediums:

  • Water with circulation of 0.2 or 0.4 m/s

  • Air with circulation of 1 or 2m/s

  • And others, any medium needed can be used for the test

Water will have a much faster response time and the faster the circulation, the faster the response time.

Overview of Simple Hardware devices

We are using 4 types of devices:

Device
SimplePack Temp
SimpleMeter
SimpleIndustry (internal probe)
SimpleIndustry (NTC on case)
SimpleIndustry (NTC on cable)

Sensor

MEMS

MEMS

MEMS

NTC

NTC

Placement

Inside enclosed case

Inside case with air intakes

Inside enclosed case

On the case

On the pipe

T63 (sensor only)

15s at 1m/s airflow

15s at 1m/s airflow

15s at 1m/s airflow

4s

15s in water

T50 (whole device)

2min (water), 4min (air)

1min (air)

8min (air)

2s

12s in water

T63 (whole device)

3min (water), 5min (air)

1.25min (air)

10min (air)

4s

15s in water

T90 (whole device)

12min (water), 20min (air)

5min (air)

40min (air)

20s

1min in water

PreviousTemperature & Humidity sensorsNextDevices for Temperature and Humidity Monitoring

Last updated 2 years ago

Was this helpful?