Frederiksen 3867.70 User Manual

Description:
This demonstration multimeter has been developed
especially for teaching, and it can display the fol-
lowing quantities: Voltage, Current, Resistance,
Frequency, Temperature, Pressure and Acidity (pH).
The demonstration multimeter is supplied with a lar-
ge 4-digit display with 45 mm high illuminated digits
on the front panel. On the rear a smaller display with
14 mm high digits is provided for the teacher.
The connections for measuring Voltage, Current, Re-
sistance and Frequency are made with standard 4
mm safety jacks on the front panel. The temperatu-
re measurement is made using a type K thermo -
couple probe via the special connector designed for
this purpose. The Acidity (pH) measurement is per-
formed using a standard pH-electrode with a BNC
connector. Pressure measurements are made using
pressure sensor accessories. For thermocouple pro-
bes, pH-electrodes and pressure sensors, please
see the section on accessories.
The quantity to be measured is selected using the
rotary switch in the center of the front panel below
the display.
The instrument is supplied with an RS232 computer
interface for transferring data to a PC. This data
transfer can be performed using general communi-
cation software like hyperterminal – or the free pro-
gram Datalyse (datalyse.dk).
User´s guide for Demonstration multimeter
20.12.10 Ae 3867.70
A/S Søren Frederiksen, Ølgod Tel. +45 7524 4966 info@frederiksen.eu
Viaduktvej 35 · DK-6870 Ølgod Fax +45 7524 6282 www.frederiksen.eu
®

Frederiksen 3867.70 Specifications

General

Brand	Frederiksen
Model	3867.70
Category	Multimeter
Language	English

Summary

Product Description and Features

General Features and Applications

Details the multimeter's development for teaching, measured quantities, and large/small displays.

Measurement Connections

Explains connections for Voltage, Current, Resistance, Frequency, Temperature, and pH measurements.

Operation and PC Interface

Describes rotary switch operation and RS232 interface for PC data transfer.

Instrument Operation and Configuration

Front Panel Controls and Displays

Details the multimeter's front panel controls, displays, and connection points.

Instrument Configuration and Usage

Explains the instrument's isolated components and simple operational steps.

Accessories and Measurement Notes

Required Accessories

Lists compatible sensors, electrodes, and PC connection cables required for operation.

Measurement Range Comments

Provides safety warnings for resistance and signal level requirements for frequency.

pH Measurement and Calibration

Explains pH measurement capabilities and provides detailed steps for single/dual point pH electrode calibration.

Pressure Measurement and Technical Data

Pressure Sensor Usage and Calibration

Details how to use and calibrate pressure sensors with the multimeter.

Technical Specifications

Lists key technical data including supply voltage, power consumption, and display types.

Measurement Ranges and Input Impedance

Summarizes measurement ranges, accuracy, and input impedance for various parameters.