KDGK-703S portable integrated calibrator (millivolt generator) Instruction Manual
KDGK-703S portable integrated calibrator (millivolt generator) is a high-precision, high-resolution and multipurpose automatic instrument calibration instrument that integrates digital display voltage, current, frequency standard signal source, Pt100 platinum resistance temperature analog standard signal source, digital voltage, current, and frequency measurement functions.
It has signal output and test functions, and can verify the following types of instruments:
Sensor, transmitter, regulator, recorder, intelligent flow totalizer, electric/pneumatic actuator and other conventional industries
Automation instrument. It can also be used to calibrate and adjust a series of computer interface boards, such as resistance boards, A/D boards
D/A board, etc. It can be widely used in petroleum, chemical industry, smelting, paper making, power generation, subway rail transit and instrumentation
Industry and scientific research departments.
Its technical performance conforms to the calibration standards of electrical II and III automatic instruments, and its working environment conforms to
Relevant provisions of two groups of instruments in GB6587.1-86 "General Outline for Environmental Testing of Electronic Measuring Instruments".
Compared with similar instruments at home and abroad, it has the following four characteristics:
·It has a full range of functions, including almost all electrical signals of automatic instruments; High precision, small size, light weight,
In particular, it can be directly applied to the field to implement on-site adjustment and maintenance of various industrial process control automation instruments.
·It can output three active milliampere signals at the same time, greatly reducing the need for multiple input signal instruments (such as intelligent flow
Calibration and maintenance of totalizer, elbow flowmeter, etc.).
·It has a wide range of AC working voltage range (180~260V. AC), and can adapt to harsh work in industrial sites
environment
·The instrument can work in the measurement and output state at the same time. There are two four-half LED displays, and each display has
Four unit display lamps display mA, mV, V and KHz respectively. The output value and
Its units and measured values and their units
Product features
1. Output function:
1. There is a continuous adjustable working power supply of 0~25.00V.DC that can be used as a two-wire transmitter, and a DC voltage signal of 0~199.99mV.DC that can be used as the analog output signal of various thermocouples.
2. It has two Pt100 thermal resistance simulators, which can output Pt100 platinum resistance - 50 ºC, - 20 ºC
-3ºC,-8ºC,0ºC,7ºC,11ºC,50ºC,100ºC,150ºC,160ºC,170ºC,190ºC,
Analog resistance signals of 200 ºC, 250 ºC and 300 ºC can be used as input signals of temperature transmitter (this function is newly added as required by some customers, and the deviation of index parameters is only for reference).
3. There are three channels of active current output: two channels of 0~22.00mA.DC and one channel of 0~19.999mA.DC. It can be used as input or output signal of type II and III instruments, and can simulate type II and III transmitters during field calibration.
4. There is a channel of 10Hz ~ 1.9999kHz frequency signal output, which can be used as the input signal of the secondary instrument of vortex flowmeter and turbine flowmeter.
2. Measurement function:
1. It can measure the voltage signal of 0~40V.DC;
2. It can measure the voltage signal of 0~199.99mV.DC;
3. The current signal of 0~100.00mA.DC can be measured;
4. It can measure the TTL level frequency signal of 5Hz~1.9999kHz and the frequency signal of vortex flowmeter and turbine flowmeter.
3, Technical indicators
1. DC voltage output
Output range accuracy resolution
0 ~ 25.00V ± (0.1% reading+5 words) 10mV
0 ~ 199.99mV ± (0.05% reading+10 words) 10uV
Note: The DC voltage source of the instrument outputs 0~25.00V.DC, 40mA, please do not operate with short circuit or overload, otherwise the overload will burn out this function of the instrument.
2. DC current output
Output range accuracy resolution
0 ~ 22.00mA (I circuit) ± (0.05% reading+5 words) 10uA
0 ~ 22.00mA (II circuit) ± (0.05% reading+5 words) 10uA
0 ~ 19.999mA (III circuit) ± (0.05% reading+10 words) 1uA
Note: The last three red keys in the bottom row of the instrument are normally pressed, so that the mA value of the last output current signal will always be maintained. MA output needs to be connected with load or short circuit to form a loop. It is to clip the black and red alligator clips of the output line together, and then press the corresponding knob to adjust to the required milliampere value.
3. Output frequency
Range accuracy resolution
10Hz ~ 1.9999kHz ± (0.1% reading+10 words) 1Hz
4. Thermal resistance analog output
Thermal resistance type Range range Output accuracy
Pt100 -50~400ºC ±0.1%
5. DC voltage measurement
Range range accuracy resolution internal resistance
0 ~ 40V ± (0.1% reading+5 words) 0.01V>10MW
0 ~ 199.99mV ± (0.05% reading+5 words) 10uV>10MW
6. DC current measurement
Range range accuracy resolution internal resistance
0 ~ 100.00mA ± (0.05% reading+5 words) 10uA 10W
7. Frequency measurement
Range range accuracy resolution internal resistance
10 ~ 1.9999kHz ± (0.1% reading+10 words) 1Hz>10MW
8. Power supply: AC 220 V ± 20% (50Hz ± 2);
9. Operating environment: temperature range: - 10 ºC~+50 ºC; Relative humidity:+40 ºC 80% RH;
10. Power consumption: 4W (MAX);
11. Calibration period: one year;
12. Overall dimension: 300 × one hundred and forty × 340 mm (width × high × Deep);
13. Weight: about 2Kg.
Instructions for use
Before use, please be familiar with the functions of switches, knobs, terminals, sockets, etc. on the front and rear panels of the instrument. because
This instrument has many functions, and may use many functions of this instrument at the same time during use. Please read carefully
This manual is to be familiar with various functions of the instrument, so as not to cause unnecessary trouble to your work.
Figure 1 Schematic diagram of front panel
2 - Frequency measurement display key (Ftest) 3 - Voltage measurement display key (Vtest)
4-millivolt measurement display key (mVtest) 5-milliampere measurement display key (mAtest)
6 - Frequency output display key (Fout) 7 - Voltage output display key (Vout)
8-channel mA output display key (mAI) 9-channel mA output display key (mAII)
10-III channel milliampere and millivolt output display key (mAIII)
11-III channel milliampere and millivolt output switch key (mAIII/mV), this key is black. When millivolt output is pressed, press the left third channel current output key at the same time to switch to millivolt output, and press the black key when the third channel milliampere output is pressed
12-I-channel milliampere output switch key (IEXT/INT) 13-II-channel milliampere output switch key (IIEXT/INT)
14-channel III mA output switch key (IIIEXT/INT) 15, 17-channel II current output port (mAIIout)
16. 18-III current output port (mAIIIout) 19, 21-millivolt voltage output port (mVout)
20. 22-circuit I current output port (mAIout) 23-circuit III current coarse adjustment knob
24-circuit III current fine adjustment knob 25-circuit II current fine adjustment knob
26-Circuit II current coarse adjustment knob 27-Circuit I current fine adjustment knob
28 - I-circuit current coarse adjustment knob 29 - voltage output fine adjustment knob (Vout)
30 - Voltage output coarse adjustment knob (Vout) 31 - Frequency output fine adjustment knob (Fout)
32 - Frequency output coarse adjustment knob (Fout) 33 - Pt100 output knob
34 - Output unit indicator 35 - Measurement unit indicator
36 - Output 4 1/2 LED display 37 - Measure 4 1/2 LED display
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