Model 428P-VERSA pH Package
The microLAB Versa 428 Package is optimized to support investigation of a broad range of laboratory concepts. This package includes:
- microLAB Versa-428 Interface
- Model 103- Thermistor
- Model 133- Voltage Lead
- Model 428-VVK- Vial kit (5) – 14 mL with light shield
- Model 2011- Gas Pressure Syringe
- Versa Spectrophotometer Module
- Versa Spectrophotometer Light Sensor
- Model 121 pH electrode
- The Versa 428-P contains all the Versa 428-B and C sensors, plus a pH electrode.
APPLICATIONS: Thermochemistry Gas Laws, Electrochemistry, Energy of Light (Planck’s Constant), Beer’s Law, Fluorescence, Turbidity, pH titrations.
The Basic MicroLab Versa 428-B package includes an integrated Energy of Light (Planck’s Constant) experiment with visual and graphic monitoring of LED band gap energies from UV to IR. Transmission/Scatter/Fluorescence nine-wavelength 380-880 nm spectrophotometer with manual wavelength selection, and a 0-2 atm pressure sensor. Basic measurements include temperature, voltage, a 0-2 atm pressure sensor, and pH. The Versa can be operated remotely; remote students can run a control and analyze date from a Versa experiment on an instructor’s desk via mouse control with Zoom or other internet conferencing software. This package also includes a Thermistor, Voltage Lead, Vial kit with five 14 mL vials and a light shield, a Gas Pressure Syringe, a pH electrode, and a USB cable.
Instrument Performance Specifications
BNC Input: pH 0-14 pH, resolution 0.0015 pH unit.
Standard industrial pH electrode.
REDOX: ± 2500 mV, resolution 76 μV Standard industrial
Dissolved Oxygen, Galvanic sensor 0-14 mg/L, resolution 0.0025 mg/L.
Ion Selective Electrodes ± 2500 mV.
Uses standard industrial BNC IS electrodes.
Pressure: 0-2 atm (0-1500 torr), resolution 0.04 torr. Factory calibrated in torr, atm, inches Hg, kPa. Leur-lock input fitting.
Temperature: Stainless steel 6” shaft thermistor, -10 to + 110 0 Celsius, ± 0.020 C resolution.
MicroLab Multi-purpose Sensor Input (1)
Industry-standard Category-5 data connector accepts MicroLab sensors (temperature, light, and many more) and user-designed sensors.
Voltage input: ± 5000mV, Resolution 130 μV
Current input: ± 2.5 mA, Resolution
Digital to analog converter (DAC)
output: ± 2.5 volts, 0-5 volts, 25 mA,
1 millivolt steps
Digital input: TTL Logic Levels.
Amber LED indicates Logic 1 input.
Digital output: TTL Logic Levels. Source or sink 25 mA. Green LED indicates Logic 1 output. Software control of experiments
Sensor power supply: ±5 VDC, 50 mA, regulated
Banana Jack Voltage Input: ± 5 volts, Resolution 150 μV.
Counter: TTL logic levels, for drop counter and radiation counters.
Software-controlled timer: Read in seconds, minutes, hours. Resolution 0.001 seconds. Real time clock, programmable.
Energy of Light: Demonstrates energy/color and energy/frequency relationships for light. Students measure and observe band gap energy and light emission for seven LED’s, violet to IR. Software helps them determine Planck’s Constant within about ± 5%.
Power Supply: Powered via USB cable from host computer.
Sensor Calibration: Any sensor that produces a voltage or a current in ranges about and fits a linear, log, power, or polynomial response.
Operating Systems: Windows XP, 2000, Vista, Windows 7, 8, & 10, Macintosh with Windows Emulators.
MicroLAB Multi-Purpose CAT-5 Input Connections: Pin 1 (white/orange stripe) -5 VDC Pin 2 (orange) TTL Digital in Pin 3 (white/green stripe) Digital Out Pin 4 (blue) Voltage In Pin 5 (blue/white stripe) DAC Out Pin 6 (green) Ground Pin 7 (white/brown stripe) Current In Pin 8 (brown) +5 VDC.