EuroDidact_UK

Pressure/Temperature Meter PM10

Thu, 24 Jan 2008 08:52:53 +0100

* Pressure and Temperature measurements * 4-digit LED display * Differential pressure from 0 to +- 200 [kPa] * Temperature reading in °C (°F) or Kelvin * RS232 serial interface to PC Pressure meter type PM10 is a microprocessor controlled instrument for measurements of pressure and temperature. Connections for tubes and standard type K (NiCr.-Ni) thermocouple. The instrument can be used as a stand alone instrument or with a PC. The pressure value or the temperature is read on the 4 digit light emitting diode (LED) display. Selection between the reading value kPa and °C (°F) is possible via two push buttons on the front panel. Built-in pressure transducer measures steam up to 125 oC. Display reading is selectable in kPa, °C (°F) or Kelvin. The pressure meter type PM10 is equipped with RS232 serial interface for PC as standard, and delivered with Windows program and interface cable for PC. Download free software. Specifications : Mains input : 230 V AC 50 Hz Input for pressure : 2 pcs. tube connectors Pressure range : 0 to +- 200 kPa Pressure accuracy : 1,5 % of reading (rel.) Input for temp. : type K bushing for NiCr.-Ni thermocouple Temp. range : 0 to +250 °C Temp. accuracy : 0.5% + 1 on least significant digit Display : 4 digit LED display Interface : RS232 serial interface for PC (DB9 plug) Dimensions (HxWxD) : 95 x 225 x 160 mm Weight : 2.2 kg

Interface Cable for KERN Balances

Thu, 24 Jan 2008 07:48:56 +0100

DM45 Remote Display Cable for KERN Balances. Use this cable for connecting your KERN Balance directly to DemoMultimeter DM45 to function as a remote display showing both weight and unit. Works with the PCB-Series (PCB 40, 60, 100, 200, 400, 600, 800, 1000, 2000, 4000, 6000 and PCB 8000), the KB 600, KB 6000, KB 8000, 572 and others. RS-232 cable DB9M - DB9F 1.8m

Interface Cable for OHAUS Balances

Thu, 17 Jan 2008 12:52:36 +0100

DM45 Remote Display Cable for OHAUS ExplorerPro Balances. Use this cable for connecting your OHAUS Balance directly to DemoMultimeter DM45 to function as a remote display showing both weight and unit. RS-232 cable DB9F - DB9F 1.8m

500 VDC Power Supply P551

Thu, 15 Nov 2007 10:03:05 +0100

High Voltage Power Supply Type P551 * Dual Stabilized DC with AC power supply * Continuously adjustable DC 0-500V, 0-50V and one adjustable 4-8VDC 3A filament source voltage * Double moving coil meters for reading of both DC voltages * All outputs electronic secured against overload 500V HT power supply for experiments with electron tubes. Versatile and reliable power supply for the daily use in laboratories and for pupil experiments with electron physics and other experiments in the physics/electronic education. The 500 VDC and 50 VDC outputs are galvanic separated and independently continuously adjustable. The 4-8V 3A output for electron tube filament voltage is also galvanic separated from the rest. Specifications : Mains input : 230V AC 50/60 Hz (or 115V AC 50/60 Hz) Output DC 500V : 0 to 500 V continuously variable and stabilized Max. load current : 25 mA Regulation : better than 0,1% for none to full load or 10 % mains voltage change Ripple and noise : better than 50 mVrms DC load limiter : electronic current limiter Output DC 50V : 0 to 50 V continuously variable and stabilized Max. load current : 15 mA Regulation : better than 10 mVrms for none to full load or 10 % mains voltage change Ripple and noise : better than 5 mV rms DC load limiter : electronic current limiter Heating voltage output: 4 to 8 V DC, continuously adjustable Max. load current : 3 A Fuse : electronic heat sensor Dimensions (HxWxD) : 85 x 325 x 190 mm (max.) Weight : 4 kg

500 VDC Power Supply P550

Thu, 15 Nov 2007 10:02:31 +0100

High Voltage Power Supply Type P550 * Dual Stabilized DC with AC power supply * Continuously adjustable DC 0-500V, 0-50V and one fixed 6.3V AC filament source * Double moving coil meters for reading of both DC voltages * All outputs electronic secured against overload 500V HT power supply for experiments with electron tubes. Versatile and reliable power supply for the daily use in laboratories and for pupil experiments with electron physics and other experiments in the physics/electronic education. The 500 VDC and 50 VDC outputs are galvanic separated and independently continuously adjustable. A 6.3 VAC output for electron tube filament voltage is also galvanic separated from the rest. Specifications : Mains input : 230V AC 50/60 Hz (or 115V AC 50/60 Hz) Output DC 500V : 0 to 500 V continuously variable and stabilized Max. load current : 25 mA Regulation : better than 0,1% for none to full load or 10 % mains voltage change Ripple and noise : better than 50 mVrms DC load limiter : electronic current limiter Output DC 50V : 0 to 50 V continuously variable and stabilized Max. load current : 15 mA Regulation : better than 10 mVrms for none to full load or 10 % mains voltage change Ripple and noise : better than 5 mV rms DC load limiter : electronic current limiter Output AC 6.3V : 6.3 V AC Max. load current : 3 A Fuse : electronic heat sensor Dimensions (HxWxD) : 85 x 325 x 190 mm (max.) Weight : 4 kg

Energy Meter EM20

Wed, 07 Nov 2007 16:36:28 +0100

The Energy Meter Type EM20 is a microprocessor controlled instrument for measurement of power and energy consumption (Wattmeter). EM20 measures also two temperatures at the same time. The instrument can be used as a stand-alone, or with a Personal Computer. All measurements are displayed on the 4 digit LED display. The different functions are selected by means of a two push button system. The instrument is equipped with a datalogger function and a real-time clock. The memory is nonvolatile, and thus all data remain in the log during switch off and transportation. The datalog may be transferred to a PC when connected through the RS232 interface. The logging can be started manually, at a preset time or when a preselected power or temperature limit is crossed (in both directions). A Windows programme is supplied along with a cable, for controlling, adjusting and data transfer from/to a PC. Download free software. * Measures Power and Energy Consumption * True RMS measurement of Current and Voltage * Measures two Temperature Inputs and Differential Temperature * Frequenzy, Phaseangle, cos(ϕ) ϕ), V, A, VA, W, Ws, Wh, Time, etc. * Datalog and real-time Clock * AC Measurements from 0 to 240 Vrms * DC Measurements from 0 to 42 V EM20 Connections: Voltage/Current at the rear panel : 10 - 240 Vrms AC Max 10 Arms 45 - 65 Hz. Voltage/Current at the front : 0 - 30 Vrms AC Max 10 Arms 16 - 999 Hz. : 0 - 42 V DC. Max 10 Arms. Temperature (2 inputs) : type K (NiCr Ni) Thermocouples, -100 to + 450 °C and differential. Weight: 5.7kg Dimensions: 215x310x210mm

Geiger-Müller Counting Tube, 9 mmØ

Fri, 12 Oct 2007 07:55:13 +0200

Geiger-Müller Tube for Alpha-, Beta- and Gamma-Rays Halogen-quenched GM detector with mica end window (LND712), in plastic housings, with very thin mica window, which makes the registration of soft Beta-Radiation possible. Including protective cap for mica window and removable stand rod 10 mmØ Technical Data Gas Filling: Ne+Halogen Maximum Starting Voltage: 325 V Recommended Operating Voltage: 500 V Operating Voltage Range: 450-650 V Plateau Range: approx. 200 V Relative Plateau Slope: < 0,06 % V-1 Dead Time: approx. 90 µs Lifetime: > 10^10 Imp. Maximum Background Shieilded: < 0,2 Imp. s-1 (3 mm Al and 50 mm Pb) Gamma Sensitivity Co60 (cps/mR/Hr): 18 Window: 9,1 mm Ø Areal Density: 1.5 ... 2 mg cm-2 Cable: Coax, 50 cm length with BNC-connector Dimensions: 90 mm x 24 mmØ

Geiger-Müller Counting Tube, 28 mmØ

Fri, 12 Oct 2007 07:54:50 +0200

Geiger-Müller Tube for Alpha-, Beta- and Gamma-Rays End Window-Alpha-Beta-Gamma Detector. Halogen-quenched GM tube with mica end window (LND72327), in plastic housings, with very thin mica window, which makes the registration of soft Beta-Radiation possible. Including protective cap for mica window General Specifications Gas Filling: Ne +Halogen Cathode Material: 446 Stainless Steel Effective Length (inch/mm): 1.45 / 36.8 Effective Diameter (inch/mm): 1.13 / 28.6 Connector: BNC Operating Temperature Range: -40 °C to +75 °C Window Specifications Areal Density (mg/cm2): 2.0 - 3.0 Effective Diameter (inch/mm): 1.13 / 28.6 Material: Mica Electrical Specifications Maximum Starting Voltage (volts): 375 Recommended Operating Voltage (volts): 500 Operating Voltage Range (volts): 450-700 Maximum Plateau Slope (%/100 volts): 10 Minimum Dead Time (micro sec): 230 Gamma Sensitivity Co60 (cps/mR/hr): 50 Maximum Background Shieilded 50mmPb + 3mmAl (cpm): 25 Cable: Coax Cable, 50 cm length with BNC-Connector Dimensions: 95 mm x 44 mmØ

Demo Multimeter DM45

Sat, 21 Jul 2007 11:43:45 +0200

* 4 digit 4000 large 57 mm LED display with 2 character unit display * 5 measuring functions: V, A, Ohm, °C(°F)/K and pH * 4 push-buttons for easy use * Rear display for the teacher * Works also as remote display for e.g. balance * Galvanic separated RS232 interface Multimeter for demonstration with extra display and RS232 interface on rear side. Use it as Voltmeter, Ammeter, Ohmmeter, Temperature Meter and pH Meter in your class demonstrations, or as a very large display for your Scale/Balance. Demo Multimeter / Remote Display Type DM45 is by the versatile measuring possibilities particularly suitable as measuring instrument in education and in the laboratory. The device is microprocessor controlled and supplied with RS232 interface cable for PC and Windows program. Download free software here. The instrument can be used as a stand-alone instrument or connected to a PC or other measuring instrument. With the PC connected, all functions can be controlled and recorded. When connected to e.g. an electronic balance, the instrument acts as a remote display. For optimum performance and trouble-free connection, the interface is galvanically separated from any other parts of the instrument. For the teachers convenience a display (4 digit 21 mm LED) is placed at the rear panel of the instrument. Measuring modes: Multimeter: Voltage ac and dc, current ac and dc, resistance in Ohm and kOhm. Temperature meter: Thermocouple NiCr-Ni (type K) input for measurements in a wide range from -40°C to +1200°C with display of temperature in °C or °K. pH meter: BNC-input for pH-combination electrode in the range 0.00 to 14.00 pH. Temperature compensation is automatic (from temperature-meter input or from ambient temperature) or can be set manually from 0 to 50 °C. Both the buffer and the sensitivity (Nernst equation) is adjustable from the front-panel or through the PC interface. Dimensions: (WxHxD) 310x220x230 mm Weight: 5.8 kg

NiCr-Ni Thermocouple type K, F/Glass 2M

Fri, 13 Jul 2007 11:52:02 +0200

NiCr-Ni Thermocouple type K, F/Glass 2 meters. Thermocouple for temperature measurement with demo multimeter DM45, energy meter EM20, pressure meter PM10 or pH and temperature meter PHM200. With a 2-pole, standard K-type flat connector. Measurement range: -50 deg.Cel to 1100 deg.Cel.

pH/Temperature Meter PHM200

Tue, 26 Jun 2007 08:39:02 +0200

pH/Temperature Meter Type PHM200 * pH and Temperature measuring * 4-digit LED display * Automatic temp. compensation * Temperature in °C (or °F) or Kelvin * Output for y/t recorder * RS232 serial interface for PC New instrument for measurements of pH and temperature, with BNC input for standard combination pH electrode and standard type K (NiCr.-Ni) thermocouple input. The pH value or the temperature is read on the 4 digit light emitting diode (LED) display. Selection between the reading value pH and °C (°F) is possible via two push buttons on the front panel. Temperature compensation of the pH measurement is done automatically with the connected temperature probe. If no temperature probe is connected, the temperature of the instrument is used (ambient temp.). Manually temp.selection is only possible with connected PC. Display reading is selectable in pH, °C (°F) or K. The pH/temperature meter PHM200 is equipped with RS232 serial interface for PC as standard, and delivered with Windows program and interface cable for PC. Download free software. Specifications : Mains input : 230 V AC 50 Hz Input for pH : BNC-bushing for combination electrode pH range : 0.10 to 14.00 pH pH accuracy : 0.1 pH unit (repeat value) Input for temp. : type K bushing for NiCr.-Ni thermocouple Temp. range : -20,0 to +999,9 °C Accuracy : 0.5% of reading or 1 °C Display : 4 digit LED display Output : 100mV/pH-unit to y/t recorder Interface : RS232 serial interface for PC (DB9 plug) Dimensions (HxWxD) : 95 x 225 x 160 mm Weight : 2.2 kg

F12 Function Generator

Mon, 07 May 2007 19:41:38 +0200

Function Generator Type F12 for general applications in education * Digital function generator 0.05 Hz to 50 kHz * LCD display - 2 lines - with light * Menu driven - ideal for student experiments * Sine- and Square-wave functions * Output amplifier with spark- and overload protection * 12 V mains adaptor included The microprocessor controlled generator is extremely simple to operate, and is designed for student experiments in the laboratory. This new low cost generator covers the normal frequency range from 1 Hz to 50 000 Hz with just one regulation and a resolution of 1 Hz. In the low-frequency function from 0.05 Hz to 3 000 Hz, the frequency can be adjusted with 0.05 Hz resolution. The user has the possibility to select sine, square or positive square as waveform. The output from the internal power amplifier is continuously adjustable with a separate knob in the range 0 to +- 12 V and can source up to 1 A. The amplifier is protected from overload, short circuit, induction voltages from coils as well as spark discharges. The generator is provided with two 4-mm sockets for the output. The low voltage supply for the generator is 12 V (230V or 115V mains adaptor is included). Technical data: Supply voltage : 12 V AC Included adaptor : 230 V AC or 115 V AC 50/60 Hz (Select type when ordering) Frequency (normal) : 1 - 50 000 Hz Resolution : 1 Hz Wave form : Sine, square and positive square Frequency (spec.) : 0.05 - 3000 Hz Resolution : 0.05 Hz Wave form : Sine, square and positive square Harmonic Distortion : - 40 dB on 2nd and 3rd harmonics. Sinus wave resolution : 16 bit Slew rate (square) : min. 5 V/µsec Power Output Amplitude : 0 to +/- 12 V (continuously adjustable) Load : 1.2 Amp max. Ri : 4.7 Ohm Display : LCD - with light - 2 lines - 16 characters Dimensions (HxWxD) : 58 x 195 x 115 mm (max.) Weight : 1.0 kg

Interface Cable for Sartorius Balances

Mon, 26 Feb 2007 10:48:41 +0100

DM45 Remote Display Cable for Sartorius Balances BJ, BL, GD, GE and TE. Use this cable for connecting your Sartorius Balance directly to DemoMultimeter DM45 to function as a remote display showing both weight and unit.

Photogate

Mon, 26 Feb 2007 10:42:43 +0100

Photogate for use with Digital Counters CT2 and C80. Experiments with Air Track (Airtrack) and Free Fall.

Power Supply PS2510

Mon, 26 Feb 2007 10:37:21 +0100

The Basic Power Supply for all Physics labs. * Stabilized DC and AC power supply * Continuously adjustable DC 0-25V, with 0-10A adjustable current limiter * Adjustable AC 0-25V, max. 10A * Double display for reading of V and A at the same time * DC or AC output/reading selectable with switch * Fixed AC outputs 6 and 12V AC, 10A User friendly and robust power supply for the daily use in laboratories and for pupil experiments in the physics/electronic education. No noise on the DC output, which can supply full current in the complete voltage range. The power supplys relatively low weight is due to the use of annular core transformers, which also give a high degree of efficiency. Specifications : Mains input : 230V AC 50/60Hz Output DC : 0 to 25V continuously variable and stabilized Max. load current : 0 to 10A continuously adjustable Regulation, DC output : better than 100 mV for none to full load, :better than 5mV for 10 % mains voltage change Ripple and noise : 1mV rms DC load limiter : electronic constant current limiter (Adjustable DC or AC are not available at the same time) Output AC : 0 to 25V variable Fixed AC : 6V and 12V Max. load currents : 10A Fuses : electronic Power consumption: 650VA Dimensions (HxWxD) : 140 x 330 x 305 mm Weight : 9.5kg

F50 Function Generator

Tue, 20 Feb 2007 11:54:48 +0100

Function Generator Type F50 for general application in education and in the laboratory. The microprocessor controlled generator can be used alone or together with the PC. This new generator does not have a frequency range switch. With just one knob, or by means of the PC interface, the frequency can be adjusted continuously within the whole range. The frequency range 0 to 130 kHz can be adjusted with a resolution of 1 or 2 Hz. In the special frequency function from 0.10 to 40 Hz, the frequency can be adjusted with 0.01 Hz. The user has the possibility to select sine, rectangle, triangle or positive square as waveform. The output impedance can be adjusted either to 50 ohms or 600 ohms. Additionally the generator gives a separate TTL signal output. The amplitude can be digitally adjusted alternatively in Vrms -, Vp - or Vpp voltage. The frequency range from 1 to 130 kHz has a programmable sweep function that sweeps in steps of 1 to 10 kHz with step rate of 0.05 to 5 seconds. The sweep function can be used e.g. with the microphone input for investigation of the amplitude characteristic as well as resonance phenomenon (data are analysed after the experiment by means of the PC). The generator is provided with BNC sockets in inputs and outputs. Dimensions (HxWxD): 100 x 290 x 210 mm Weight: 3.7 kg Download free software.

Watt- and Joule Meter WJ31

Tue, 06 Feb 2007 07:50:37 +0100

The Watt/Joule Meter Type WJ31 is a microprocessor controlled instrument for measurement of power and energy. WJ31 measures Watt (Wattmeter), Joule (Joulemeter) and keeps track of the Time in Seconds. This instrument is ideal for students experiments with measuring accurate instantaneous power or cumulative electrical energy delivered to a load from a power supply. All measurements are displayed on the large 4 digit LED display. The different functions are selected and controlled by means of three push buttons. * Measures Power, Energy, Consumption and Time * Microprocessor controlled measuring and calculation * Large LED-display and LED-diodes. * Ideal for Students Experiments Specifications : Supply Voltage : 12 VDC supplied by included mains adaptor Functions : Watt, Joule and Time in Seconds Input : 0.5 V to 30 V DC or AC, 0 to 10 kHz Load : 0.2 A to 10 A DC or AC Display : 4 digit LED-display, 20 mm high Dimensions (HxWxD) : 45 x 165 x 115 mm (max.)

6 kV EHT Power Supply Type HT6000

Mon, 06 Nov 2006 08:08:17 +0100

High Tension Power Supply * High Voltage Supply 6kVDC * Continuously adjustable DC 0-6000V and a fixed 6.3V AC filament voltage source * Digital 3-digit instrument Continuously variable 0-6000 VDC at a max. short-circuit current of 2 mA. Auxiliary 6.3 VAC output for filament supply up to 3 A. The voltage is continuously displayed at the 12 mm LED display with 3 digits. Specifications : Mains input : 230 V AC 50 Hz (or 115V AC 50/60 Hz) Output DC 6kV : 0 to 6000 V continuously variable Max. load current : 2 mA on short-circuit only Display : 3 digits LED, range 0.00 to 6.00 kV Output AC 6.3V : 6.3 V AC, high voltage resistant up to 6kV Max. load current : 3 A Fuse : 3 A front fuse Dimensions (WxHxD) : 290x150x250 mm (max.) Weight : 6.1 kg

Counter / Timer CT2

Mon, 19 Jun 2006 12:42:18 +0200

Universal Counter type CT2 is a microprocessor based Counter. Specially designed for the education in Physics and experiments on the Air Track (Airtrack), Free Fall Apparatus, Electronic Circuits etc. The instrument has the following functions and measuring modes: * Frequency counting as continuous or single measurement * Pendulum Frequency - continuous or single measurement * Period measurement as continuous or single measurement * Pendulum Period - continuous or single measurement * Impulse counting - continuous counting, 1, 6, 10 and 60 seconds counting * Impulse counting for 10 seconds, followed by 5 seconds pause, repeated sequence * Impulse counting for 10 seconds, continuous repeated * Start A - Stop B The time interval from A to B is measured (positive- or negative-going pulses selectable on both input A and B) * Pass times Measures the pass times for A and B (up to 9 per channel) (high-level or low-level selectabel on both input A and B) * Run + Pass times Measures the time from A to B and the pass times for A and B (positive-/high-level or negative-/low-level selectable on both input A and B) The CT2 can be used as a stand-alone instrument or together with a Personal Computer. A Windows program for operation and data logging from the instrument is included. Also a cable for connecting the CT2 and the PC serial port (COM-1 or COM-2) is included. The software is included with the instrument on a cdrom, but can also be downloaded from this website free of charge. The s/w also runs as demo without the instrument. Download free software. The GM (Geiger-Müller) amplifier module is as option supplied with the CT2.

Power Supply PS2506

Fri, 28 Apr 2006 09:53:06 +0200

The Basic Power Supply for all Physics labs. * Stabilized DC and AC power supply * Continuously adjustable DC 0-25 V, with 0-6 A adjustable current limiter * Continuously adjustable AC 0-25 V, max. 6 A * Double display for reading of V and A at the same time * DC or AC reading selectable with switch User friendly and robust power supply for the daily use in laboratories and for pupil experiments in the physics/electronic education. No noise on the DC output, which can supply full current in the complete voltage range. The AC output has no connection to the DC output and is continuously adjustable and can supply full current in the complete range (regardless of the load on the DC output). The power supplys relatively low weight is due to the use of annular core transformers, which also give a high degree of efficiency. Specifications : Mains input : 230V AC 50 Hz (or 115V AC 50/60 Hz) Output DC : 0 to 25 V continuously variable and stabilized Max. load current : 0 to 6 A continuously adjustable Regulation, DC output : better than 100 mV for none to full load, better than 5 mV for 10 % mains voltage change Ripple and noise : 1 mV rms DC load limiter : electronic constant current limiter Output AC : 0 to 25 V continuously variable Max. load current : 6 A Fuse : electronic Power consumption: 350 VA Dimensions (HxWxD) : 130 x 260 x 280 mm Weight : 7.4 kg

Oscillation Apparatus

Thu, 09 Mar 2006 12:36:03 +0100

Oscillation and Wave Apparatus The development of the apparatus is based on the well-known Prytz Oscillating Apparatus. The components are a Plexi-glass tube, inside which a helical spring is hanging from the top, with a bowl loaded with a circular magnet. Surrounding the tube, a vertically adjustable circular induction coil that connects to for example the Function Generator F12 or F50. In General: With the induction coil connected to the function generator, the helical spring pendulum is set to vibrate - longitudinal oscillations - that moves up through the spring and is reflected from the fixed point of the spring at the top. The spring-particles are now influenced by both the incoming and the reflected wave. For specific drive frequencies a resonance case builds up. This is recognized as a standing wave on the spring in form of easy recognizable distribution of knots and bows - contraction and expanding of the spring windings. On the base of the apparatus there are three adjustment screws. When the spring-pendulum is fixed with the top bar on the tube, the adjustment screws are set, so that the spring-pendulum with bowl and magnet does not touch the tube. The spring pendulum must oscillate free from the tube.