Overview

The HK-5110 time calibrator complies with the JJG 237-2010 "Stopwatch" verification regulation issued by the State Administration for Market Regulation. It is suitable for use by metrology departments at all levels, factories, colleges and universities, and various research institutions to calibrate various millisecmilliseconds meters, electric stopwatches (401, 405, 415, 417), mechanical stopwatches and digital quartz electronic watches. The instrument adopts full digital control. The whole machine has the advantages of high stability and high accuracy, complete functions, convenient operation and strong anti-interference ability.

Technical parameters

一Main technical indicators

   1 Internal crystal oscillator

Nominal frequency: 10MHz

     Daily aging rate: ≤5×10-9

       Second stability: ≤5×10-11/s   

Accuracy: ≤5×10-8/s

           Preheating time: > 2 hours

2 Calibrate mechanical stopwatches and electronic stopwatches (T0 is the input calibration time interval)

   Input range: 0.5 seconds to 99,999 seconds

   Accuracy: Better than ± (1×10-7×T0+3ms)

3 Calibrate the pointer type electric stopwatch (T0 is the input calibration time interval)

Input range: 0.01s to 9999s

Accuracy: Better than ± (accuracy of mains frequency ×T0+3ms)

4 Verify the millisecond meter and digital electric stopwatch (T0 is the input verification time interval)

Input range: 10μs to 1800s

   Accuracy: Better than ± (1×10-7×T0+3μs)

5   Input reference signal

   Frequency: 10MHz

Amplitude: 1V to 3V

6   Output of mains power frequency

Frequency: 100Hz (mains frequency)

Waveform: Pulse

    Amplitude: 5V

General characteristics

1 Conditions of use

   Voltage: AC 220 (1±10%) V

   Frequency: 50 (1±5%) Hz

Temperature: 0℃ to 40℃

Humidity: < 80%

2 Mechanical properties

Dimensions: 340mm×215mm×83mm

   Weight: < 5kg

3 Operating features: The operation and display are carried out by combining keys and knobs