MQ137 Semiconductor Sensor for Ammonia

MQ137 Semiconductor Sensor for Ammonia

Sensitive material of MQ137 gas sensor is SnO2, which with lower conductivity in clean air. When the target combustible gas exist, The sensor’s conductivity is more higher along with the gas concentration rising. Please use simple electrocircuit, Convert change of conductivity to correspond output signal of gas concentration.

MQ137 gas sensor has high sensitity to Ammonia, also to other organic amine. The sensor could be used to detect different gas which contains Ammonia, it is with low cost and suitable for different application.

Character

* Good sensitivity to Ammonia

* Long life and low cost

* Simple drive circuit

Application

* Domestic Ammonia detector

* Industrial Ammonia gas detector

* Portable gas detector

MQ138 Semiconductor Sensor for Organic Steam

MQ138 Semiconductor Sensor for Organic Steam

Sensitive material of MQ138 gas sensor is SnO2, which with lower conductivity in clean air. When the target Organic Steam exist, The sensor’s conductivity is more higher along with the gas concentration rising. Please use simple electrocircuit, Convert change of conductivity to correspond output signal of gas concentration.

MQ138 gas sensor has high sensitity to Toluene, Acetone, Ethanol and Formaldehyde, also to other organic steam. The sensor could be used to detect different organic steam, it is with low cost and suitable for different application.

Character

* Good sensitivity to Organic Steam

* High sensitivity to Toluene, Acetone and Ethanol

* Long life and low cost

* Simple drive circuit

Application

* Domestic Organic steam detector

* Industrial Organic steam detector

* Portable gas detector

MQ-3 Semiconductor Sensor for Alcohol

MQ-3 Semiconductor Sensor for Alcohol

Sensitive material of MQ-3 gas sensor is SnO2, which with lower conductivity in clean air. When the target alcohol gas exist, The sensor’s conductivity is more higher along with the gas concentration rising.

Please use simple electrocircuit, Convert change of conductivity to correspond output signal of gas concentration.

MQ-3 gas sensor has high sensitity to Alcohol, and has good resistance to disturb of gasoline, smoke and vapor. The sensor could be used to detect alcohol with different concentration, it is with low cost and suitable for different application.

Character 

* Good sensitivity to alcohol gas

* Long life and low cost

* Simple drive circuit

Application

* Vehicel alcohol detector

* Portable alcohol detector

MQ-4 Semiconductor Sensor for Natural Gas

MQ-4 Semiconductor Sensor for Natural Gas

Sensitive material of MQ-4 gas sensor is SnO2, which with lower conductivity in clean air. When the target combustible gas exist, The sensor’s conductivity is more higher along with the gas concentration rising. Please use simple electrocircuit, Convert change of conductivity to correspond output signal of gas concentration.

MQ-4 gas sensor has high sensitity to Methane, also to Propane and Butane. The sensor could be used to detect different combustible gas, especially Methane, it is with low cost and suitable for different application.

Character 

* Good sensitivity to Combustible gas in wide range

* High sensitivity to Natural gas

* Long life and low cost

* Simple drive circuit

Application

* Domestic gas leakage detector

* Industrial Combustible gas detector

* Portable gas detector

MQ-5 Semiconductor Sensor for Combustible Gas

MQ-5 Semiconductor Sensor for Combustible Gas

Sensitive material of MQ-5 gas sensor is SnO2, which with lower conductivity in clean air. When the target combustible gas exist, The sensor’s conductivity is more higher along with the gas concentration rising. Please use simple electrocircuit, Convert change of conductivity to correspond output signal of gas concentration.

MQ-5 gas sensor has high sensitity to Methane, Propane and Butane, and could be used to detect both Methane and Propane. The sensor could be used to detect different combustible gas especially Methane, it is with low cost and suitable for different application.

Character 

* Good sensitivity to Combustible gas in wide range

* High sensitivity to Methane, Butane and Propane

* Long life and low cost

* Simple drive circuit

Application

* Domestic gas leakage detector

* Industrial Combustible gas detector

* Portable gas detector

MQ-7 Semiconductor Sensor for Carbon Monoxide (CO gas)

MQ-7  Semiconductor Sensor for Carbon Monoxide (CO gas)

Sensitive material of MQ-7 gas sensor is SnO2, which with lower conductivity in clean air. It make detection by method of cycle high and low temperature, and detect CO when low temperature (heated by 1.5V). The sensor’s conductivity is more higher along with the gas concentration rising. When high temperature (heated by 5.0V), it cleans the other gases adsorbed under low temperature. Please use simple electrocircuit, Convert change of conductivity to correspond output signal of gas concentration. MQ-7 gas sensor has high sensitity to Carbon Monoxide. The sensor could be used to detect different gases contains CO, it is with low cost and suitable for different application.

Character Configuration

*Good sensitivity to Combustible gas in wide range

* High sensitivity to Natural gas

* Long life and low cost

* Simple drive circuit

Application

* Domestic gas leakage detector

* Industrial CO detector

* Portable gas detector

MQ-6 Semiconductor Sensor for LPG

MQ-6 Semiconductor Sensor for LPG

Sensitive material of MQ-6 gas sensor is SnO2, which with lower conductivity in clean air. When the target combustible gas exist, The sensor’s conductivity is more higher along with the gas concentration rising. Please use simple electrocircuit, Convert change of conductivity to correspond output signal of gas concentration.

MQ-6 gas sensor has high sensitity to Propane, Butane and LPG, also response to Natural gas. The sensor could be used to detect different combustible gas, especially Methane, it is with low cost and suitable for different application.

Character

* Good sensitivity to Combustible gas in wide range

* High sensitivity to Propane, Butane and LPG

* Long life and low cost

* Simple drive circuit

Application

* Domestic gas leakage detector

* Industrial Combustible gas detector

* Portable gas detector

PROTEK DF1760SL5A Power supply, 0-60V, 0-5Amp

PROTEK DF1760SL5A Power supply, 0-60V, 0-5Amp

Technical Specs:

• Linear Output 0 to 60V, 0 to 5A
• Ideal DC Source for Laboratories (Government, Education etc) , Industrial application
• Excellent Stability and Precise Voltage and Current Level Setting
• Adjustable Constant Voltage/Current and Overload Indicator
• Isolated Outputs for Series or Parallel operation
• 3 Digit LED Read-outs
• Low ripple noise
• Superior Line/Load Regulation

Protek DF1730SB5A Power Supply, 0-30V, 0-5Amp

Protek DF1730SB5A Power Supply, 0-30V, 0-5Amp

Tech Specs:

• Linear output 0 to 30V, 0 to 5A
• Ideal DC Source for Laboratories (Government, Education etc) , Industrial application
• Excellent Stability and Precise Voltage and Current Level Setting
• Adjustable Constant Voltage/Current and Overload Indicator
• Isolated Outputs for Series or Parallel operation
• 3 Digit LED Read-outs
• Low ripple noise
• Superior Line/Load Regulation

Protek 2120 200MHz Digital Storage Oscilloscope

Protek 2120 200MHz Digital Storage Oscilloscope

• 200MHz Bandwidth with 2 Channels
• Real Sampling Rate: 1Gsa/s
• 50Gsa/s Equivalent-Time Sampling Rate
• Large 5.7 inch TFT Color Display
• Three Math Functions Including "+", "-" and "FFT"
• Multi-Languages Support
• USB (Host & Device), RS232 & RJ45 Interface
• Battery Power Operation (Optional)

Specifications Channels 2 Bandwidth 200MHz Rise Time 1.8ns Approximately Input Impedance Resistance: 1M ±2% Capacitance: (20±5)pF Polarity Normal and Invert Maximum Input 400V (AC + DC Peak) Waveform Signal Process CH1±CH2, CHlxCH2, CHlICH2, FFT Bandwidth Limit 40MHz / -3dB Source CH1, CH2,  EXT., City Electricity Mode Edge, Pulse, Video, Slope Trigger Sensitivity Maximum 1 Div. (Frequency upper Limit to 40 MHz), Maximum 2 Div., TV-V, TV-H, Video Trigger Ext. Trigger Input Impedance Resistance: 1Mohm ±2% Capacitance: (20±5)pF Ext. Trigger Sensitivity Maximum 100mVp-p (Frequency Support Limit to 40MHz) 200mVp-p, TV-V, TV-H, Video Trigger Max. Input Voltage 400V (AC + DC Peak) Low Frequency Inhibition Frequencies Less Than 100Khz will be inhibited High Frequency Inhibition Frequencies Greater Than 100Khz will be inhibited Sampling Real-Time Max. Sampling Rate: 0 series is 500MSa/s, 1 Series is 1GSa/s Range (1-2-5 Increments) 50s/div ~ 1ns/div Mode Main Sweep, Main Sweep and Delay Expansion Sweep, X - Y X-Axis Input Channel 1 Y-Axis Input Channel 2 Phrase Shift Maximum 3 Degrees at 5MHz Voltage Measurement Vpp, Vamp, Vrms, Vhi, Vlo, Vmax, Vmin, Pre-Shoot, Overshoot Time Measurement Frequency, Rise time, Fall time, Positive Width, Negative Width, Duty Cycle Delay Measurement Delay 1 -> 2 , Delay 1 -> 2  Cursors Measurement Voltage Difference Between Cursors: Δ V Time Difference Between Cursors: Δ T Frequency Difference Between Cursors: 1 Δ T TFT LCD Type 5.7 Inch Display Resolution 240 (Vertical) x 320 (Horizontal) Dpi RS232 Interface DB 9-Pin RS232 Interface USB USB Host / Device 2.0 Full Speed Supported Line Voltage Range AC 100V ~ 240V ± 10%, 45Hz ~ 440Hz, Auto Selection Battery Power Option Li-Ion Battery Dimensions 300 x 150 x 130mm Weight 2.5Kgs, 5.5lbs

Protek 3006 2 Channel, 60MHz Digital Storage Oscilloscope

Protek 3006 2 Channel, 60MHz Digital Storage Oscilloscope

• 60MHz Bandwidth with 2 Channels
• 500MSa Real-time Sampling Rate
• 25GSa/s Equivalent-Time Sampling Rate
• Large 7-inch Color Display
• Record Length up to FFT
• Multi-Languages Support
• USB Host and Device Connections

Specifications Vertical Specifications Channels 2 Bandwidth 60MHz Rise Time 5.8ns (Approx.) Input Impedance Resistance: 1 M +/- 2% Capacitance: (20+/-5) pF Polarity Normal & Invert Maximum Input 400V (DC + AC Peak) Waveform Signal Process CH1 +/- CH2, CH1 x CH2, CH1/CH2, FFT Bandwidth Limit 20MHz +/-% Typical Horizontal Specifications Sampling Rate 500MSa/s Equivalent Max. Sampling Rate is 25GSa/S for all Times Range (1 - 2 - 5 Increments) 50s/div ~ 10ns/div Mode Main Sweep, Main Sweep + Delay Expansion Sweep, X-Y Trigger Specifications Source CH1, CH2, EXT., EXT/5, AC Line Mode Auto, Normal, Single Trigger Sensitivity DC: CH1/2 (typical) 1 Div from DC to 10MHz; 1.5div from 10MHz to full EXT (Typical): 200mV from DC to 40MHz EXT/5 (Typical): 1V from FC to 40MHz AC: Attenuates signal below 10Hz HF Reject: Attenuates signals below 15kHz LF Reject: Attenuates signals below 150 kHz Noise Reject: Reduces trigger sensitivity Trigger Level Range CH1, CH2: +/- Division from center of screen EXT: +/- 1.2V EXT/5: +/- 6V Trigger Level Accuracy (Accuracy is for signals having rise and fall time at max 20ns) CH1, CH2: +/-(0.3div x V/div)(within +/-4 Division from center of screen) EXT: +/- (6% of Setting + 40mV) EXT/5: +/- (6% of setting + 200mV) Edge Trigger Rising, Falling, Rising & Falling Pulse Width Trigger Trigger (when >, <, =) on positive or negative pulses Pulse width range: 20ns ~ 10s Videon Trigger Trigger on NTSC, PAL, or SECAM standard video signal Line Range: 1-525 (NTSC), 1 - 625 (PAL/SECAM) Slope Trigger Trigger (when >, <, =) on positive or negative slope, Set Time: 20ns ~ 10s Overtime Trigger From the rising or falling edge, Set Time: 20ns ~ 20s Alternative Trigger Internal Trigger on edge, pulse width, video or slope Cursors and Measurement Voltage Measurement Vpp, Vamp, Vrms, Vhi, Vlo, Vmax, Vmin, Pre-shoot, Overshoot Time Measurement Frequency, Rise Time, Fall Time, Positive Width, Negative Width, Duty Cycle Delay Measurement Delay 1- > 2  Delay 1- > 2  Cursor Measurement Voltage Difference between cursors V Time Difference between Cursors T Frequency difference between Cursors 1 T Display TFT LCD Type 7.0 Inch Diagonal Crystal Display Display Resolution 800 x 480 Dots General Specifications USB USB Host / USB Device Power Source AC 100V ~ 240V +/- 10%, 45Hz ~ 440Hz, Auto Selection Physical Dimensions 12.3 x 4.25 x 5.6" inches (313 x 108 x 142mm) Weight 4.6lbs (2.08Kg)

Protek DSO-2150 PC based Digital Storage Oscilloscope 60MHz

Protek DSO-2150 PC based Digital Storage Oscilloscope 60MHz (usb interface)

General Specifications Maximum sampling rate Realtime sampling 150MS/s Bandwidth 60MHz(-3dB) Single shot bandwidth 60MHz Buffer size 32K samples Channels 2 Channels Voltage Range 10mV ~ 5V/div @ 1 probe 100mV ~ 50V/div @ 10 probe 1V ~ 500V/div @ 100 probe 10V ~ 5000V/div @ 1000 probe Accuracy ±3% Timebase Range 4ns/div ~ 1h/div (1-2-4 sequence) Offset Level +/-4 Divisions Coupling AC, DC, GND Impedance 1M ohm Input protection 35Vpk(DC + peak AC; Without external attenuation) Roll Mode 1s/div ~ 1h/div Range 10 Divisions Pre/Post Production 0% ~ 100% Trigger TYPE Edge trigger: Rising edge, Falling edge Trigger mode Auto, normal, and single Autoset Yes Settability 0.03 div increments Trigger Level +/-4 division Measurements Vp-p, Vmax, Vmin, Vmeans, Vrms, Vamp, Vhigh, Vlow, positive overshoot, negative overshoot, cycle mean, cycle rms, period, frequency, positive pulse width, negative pulse width, rise time (10% ~ 90%) fall time (10% ~ 90%), positive duty cycle, negative duty cycle Cursor Time/frequency difference, voltage difference Math Addition, Subtraction, multiplication, Division FFT Rectangular, Hanning, Hamming, Blackman Window Interface Universal Serial Bus (USB) Power No external source required Bus-powered from USB1.7W) Calibration Signal Output 2V, 1kHz, Square Wave Trace Display Point/Line Vertical Position Variable Yes Grid On/Off File Management Image save: .BMP, .JPG Data Save: .dso OLE (Object Linking and Embedding) automation: Data generation for Microsoft excel Setting save/load Print Print in color/mono

Cadik S10 Tool set kit

Cadik S10 Tool Set kit

contains :
(12 items)
1. Soldering iron
2. Screwdriver Philips 100x4
3. Screwdriver Philips 75x3
4. Screwdriver Slotted 100x4
5. Screwdriver Slotted 75x3
6. Long nose plier 4''
7. Long nose plier 5''
8. Cutting plier 5''
9. De-soldering pump
10. Digital Multimeter
11. Diamond File
12. Cutter knife

Protek DSO-5200A 200MHz usb oscilloscope

Protek DSO-5200A 200MHz usb oscilloscope

General Specifications Maximum sampling rate Realtime sampling 100MS/s Equivalent Sampling 25GS/s Bandwidth 200MHz(-3dB) Single shot bandwidth 100MHz Buffer size 10K ~ 512K samples Channels 2 Channels Voltage Range 10mV ~ 10V/div @ 1 probe 100mV ~ 100V/div @ 10 probe 1V ~ 1000V/div @ 100 probe 10V ~ 10000V/div @ 1000 probe Accuracy ±3% Timebase Range 2ns/div ~ 1h/div (1-2-4 sequence) Offset Level +/-4 Divisions Coupling AC, DC, GND Impedance 1M ohm Input protection 35Vpk(DC + peak AC; Without external attenuation) Roll Mode 1s/div ~ 1h/div Range 10 Divisions Pre/Post Production 0% ~ 100% Trigger TYPE Edge trigger: Rising edge, Falling edge Trigger mode Auto, normal, and single Autoset Yes Settability 0.03 div increments Trigger Level +/-4 division Measurements Vp-p, Vmax, Vmin, Vmeans, Vrms, Vamp, Vhigh, Vlow, positive overshoot, negative overshoot, cycle mean, cycle rms, period, frequency, positive pulse width, negative pulse width, rise time (10% ~ 90%) fall time (10% ~ 90%), positive duty cycle, negative duty cycle Cursor Time/frequency difference, voltage difference Math Addition, Subtraction, multiplication, Division FFT Rectangular, Hanning, Hamming, Blackman Window Interface Universal Serial Bus (USB) Power No external source required Bus-powered from USB1.7W) Calibration Signal Output 2V, 1kHz, Square Wave Trace Display Point/Line Vertical Position Variable Yes Grid On/Off File Management Image save: .BMP, .JPG Data Save: .dso OLE (Object Linking and Embedding) automation: Data generation for Microsoft excel Setting save/load Print Print in color/mono