Voltmeter, milliammeter digital Billboard F294-2
Offer type: salePublished: 16.08.2015
| Price: | 2 000 UAH |
| Seller: |  Aleksandr Vladimirovich |
| Phones: |  0507379739 Show phone |
| Address: | Ukraine, Chernihivs'ka Oblast', Chernihiv |
Voltmeter, milliammeter digital Billboard F294-2
Also, this device can be called: f 294-2, f-294-2, F, f 294 2.
F294-2 voltmeter, milliammeter digital Billboard one-limit is designed to measure voltage and current in DC circuits.
Dimensions - HH mm.
Accuracy class - 0,2/0,1.
Weight - 1.8 kg.
The basis of operation of the devices voltmeters, milliammeters F294-2 on the method of time-pulse conversion of two-stroke integrating the measured signal and reference voltage.
The electrical circuit of the device is implemented on integrated circuits and semiconductor devices and placed on three printed circuit boards connected by bundles.
The device has a plastic housing. Reading device is made to discharge indicators and a removable frame.
Specifications voltmeter, milliammeter F294-2:
The method included
Measurement limit
The quantization step
Input impedance
Accuracy class
Directly
20 µa
0,010 µa
-
0,2/0,1
With an individual extension resistance 1 Mω
20 In
0,010 In
1±0.01 MW
0,2/0,1
With an individual extension resistance 10 Mω
200 In
0,100 In
10±0,10 Mω
0,2/0,1
The time of operating mode setting - no more than 30 min.
Polarity selection is automatic.
Time measurement with periodic run - 40±0.8 msec.
Voltmeter reading device F294-2 provides an indication of the measurement result with the highest readings - 1999.
Voltmeters, milliammeters provide external control switching indicator lights indicating device.
In the voltmeter, milliammeter provided access to the external connector:
- the values of the measured signal in BCD 8-4-2-1;
signal measurement cycle;
signal polarity sign;
signal reboot.
The parameters of pulsed output signals:
- the range of voltages corresponding to a high signal level from 2.4 V to 5.25 V;
- the range of voltages corresponding to the low signal level from 0 to 0.5 V.
The pulse duration of the signal cycle measurement is not less than 2 μs.
The unit F294-2 provides periodic and ad hoc measurement mode.
Run the instrument in single measurement is performed remotely serving contact "External trigger" connector external periodic trigger pulses with the following parameters:
- the range of voltages corresponding to a high signal level from 2 to 5.25;
- the range of voltages corresponding to the low level signal from -0.4 V to 0.8 V;
- pulse duration - not less than 2 μs;
- the time interval between the triggering pulses with a measurement time of 40 MS is 80.8 MS; with a measurement time of 80 MS - 161,6 MS; with a measurement time of 320 MS - 646,4 MS.
Unlimited continuous operation.
The average time between failures with the maintenance of not less than 18,000 hours
Average life is 10 years.
Conditions of operation of voltmeters, milliammeters F294-2:
The voltage of the power supply - 220 Hz ± 10%.
The mains frequency is 50±1 Hz.
Power consumption - 10 watts.
Ambient temperature - from +5°C to +50°C.
Relative humidity at +25°C - 90%.
Voltmeters F294-2 equipped with individual additional resistance, which are designed as separate units and are mounted on the rear wall with the top two screws.
Mounting the unit to the panel or panels made four screws located on the front panel.
Call:
0507379739
