Chino Scientific Instruments Manufacturing

Transcription

1 DIGITAL MICRO OHM METER Chino s made DIGITAL MICRO OHM METER is a compact high reliability 3 ½ digit instrument suitable for measurement of resistivity of copper wires from 70 SWG to 50 SWG resistance of cables, windings, coils, heater elements contact resistance of switches, relays etc. Emphasis in the design of this instrument has been to provide quick, stable & repeatable readings of resistance. The instrument uses 4 terminal measurement so that resistance of test leads & contacts in eliminated from test results. Actual value of resis is directly displayed on seven segment 12.5mm display. SPECIFICATION RANGE OF MEASUREMENT : 1 micro ohm to K Ohm in eight ranges RANGE NOMINAL TEST CURRENT ACCURACY µ Ohm 1.50 A ± 0.3% + 2 Digits m Ohm 0.75 A ± 0.2% + 2 Digits m Ohm 0.75 A ± 0.2% + 2 Digits Ohm 75 ma ± 0.2% + 2 Digits Ohm 7.5 ma ± 0.2% + 2 Digits Ohm 0.75 ma ± 0.2% + 2 Digits Ohm ma ± 0.2% + 2 Digits K Ohm ma ± 0.2% + 2 Digits WARMUP Time for rated accuracy = 3 min. INPUT VOLTAGE : 230V AC ± 10% 10W Approx. OVER RANGE : Three most significant digit blank & 1 appears

2 SINE / SQUARE AUDIO OSCILLATOR - 20Hz TO 200KHz SPECIFICATION FREQUENCY RANGE : 20 Hz to 200 MHz in Four decade steps DIAL ACCURACY : ± 5% WAVE FORM : SINE & SQUARE WAVE OUTPUT VOLTAGE : (1) Sine Wave 0-10V & 0-1V with Variable control (2) Square Wave 0-15V p/p Continuously Variable SINE WAVE DISTORTION : Less than 0.5% from 100 Hz to 100KHz SQUARE WAVE RISE TIME : Less than 100 neno sec. at maximum output SQUARE WAVE SYMMETRY : Duty Factor variable from 0% to 80% OUTPUT IMPEDANCE : 600 Ohm ± 5% POWER : 230V AC ± 10 %

3 CHINO Audio Frequency Generator FIXED FREQUENCY OSCILLATOR" is capable of Providing SINE Wave of Pre-Fixed Frequency. It has very low Distortion & constant signal amplitude. It has a maximum 30 VP/P amplitude. The output is protected against short circuit. The equipment is used in Audio Electronics and other Laboratory & Research Work. Basic Modified wien bridge, with AGC Exceptionally pure wave Fool Proof Oscillator start circuits Symmetric output about OV Constancy of output VS frequency High Current capacity that meets power drive application Specification Frequency Range : 20 Hz to 200 KHz using fine and coarse controls. Accuracy : ±2% on all ranges. Outputs Impedance : App. 60 Ohms Amplitude for sine : 20 V Peak to Peak wave output. Input Voltage Range: 30uV ~ 100V Frequency Range: 10Hz ~ 2MHz Input Impedance: 1MΩ, 50pF Noise Voltage: <3% of the full scale Overload Voltage:300uV-1V the AC overload Vp is 100V 3V-100V the AC overload Vp is 300V Dimension(mm): 125(W) 185(H) 270(D)

4 CHINO Vacuum Tube Voltage meter Specification DC VOLTAGE RANGE: 1.5V ACCURACY: ± 3% of Range Electronic Volt Ohm Meter (VTVM) to 1500V FSD in Seven Range of 1.5V, 5V, 15V, 50V, 150V, 500V, 1500V INPUT IMPEDANCE: 10 M ohms. OVER LOAD PROTECTION:1500V DC. AC VOLTAGE RANGE: 1.5V FSD to 1500V FSD in Seven Range of 1.5V, 5V, 15V, 50V, 150V, 500V, 1500V ACCURACY: ±5% of Range INPUT IMPEDANCE: 1 M ohm. At low Frequency 10 Hz to 500 KHz accuracy ±10% upto 10MHz. FREQUENCY RESPONSE: 10 Hz to 500 KHz. accuracy ±10% up to 10MHz MAXIMUM INPUT VOLTAGE: 200V RMS up to 150V Range, 1500V RMS on 500V &1500V Range. OHMS RANGE: 0.2 ohm to 1000 M ohm in 7 decade Range with 10 ohm to 10M ohm Centre Scale ACCURACY: ±5% of mid scale POWER SUPPLY: 23OV ±10% 50 Hz

5 CHINO A.F./R.F. Generator Specification : AF/RF Oscillator is compact & versatile equipment useful for testing & calibration of receivers, test equipment. EMI / RFI measurements, communication system maintenance, design & testing of amplifiers & filters etc. Its economical price & commendable features make it an excellent choice in research & development labs, educational institutions, production & maintenance departments etc. AM is provided on useable range. It offers wide frequency range of 100 KHz to 50 MHz in 7 ranges with a 4 digit frequency display which minimizes errors in setting. Excellent amplitude response dispenses with the modulation level control & the depth of modulation does not change with frequency or level change. TECHNICAL SPECIFICATIONS : RF Frequency Range 100 K ranges Hz to 50 MHz in 7 overlapping Frequency Display : AF Frequency Accuracy Output Level Response Attenuator Termination Modulation Type AF/ Modulating Depth of Mod. 100 KHz KHz, 250 KHz KHz 700 KHz MHz, 1.5 MHz - 5 MHz 5 MHz - 15 MHz, 15 MHz - 25 MHz 25 MHz - 50 MHz, Digital 400 Hz & 1 KHz Better than + - 2% digit 500 mv p-p or more Better than db 20 db step & 20 db continuously variable BNC AM Frequency Internal 400 Hz & 1 KHz modulating frequency 30% + - 5% adjustable (AM)