1. Product Introduction
LZ-840 flux meter is a precision integrating flux meter, which uses different induction coil to measure AC and DC magnetic flux. It designed by adopting newest microprocessor and excellent operational amplifier, combining with advanced analog electronic technology. The main part is the analog integrator controlled by microprocessor. Analog integrator is quite flexible, with excellent property, it can run good in different field. Embedded microprocessor not only improves the function of the integrator, and also adds a variety of useful functions to the machine.
LZ-840 flux meter reflects fast, easy to use, automatic operation mode and manual mode can be selected at random. With the function of one-bottom automatic zero drift function makes LZ-840 to be a perfect magnetic measurement instrument.
2. Main Features
16-key keyboard, with multiplexing functionAC/DC modeEmbedded microcomputer control, automatic or manual range 4 ¾ digit display resolution, LCD display with back light functionWith superior drift adjust and suppress function, high anti-noise Multiply unit selection: Gs, Tesla, Oe, Mx, MxN, Wb, WB/N, Vs, Wb*cm^2, A, %Store five sets of measurements coil parameters, and automatically recognize standard probes RS-232, output interface of relay switch ( apply for PLC)It can be remote control by computerWith function of analog signal outputHardware peak holdHigh and low threshold alarm function for local and remote control Flexible range expansion
3. Specifications
| Measuring |
Input signal No.: 1
Input type: 2 terminal, ground for reference
Input resistance: 100 k or 10 k
Maximum input voltage: 60 V
Display refresh rate: 3 times/s |
| DC Measurement |
Resolution: 4¾ digits
Integrating capacitor: 1 µF
Input resistance: 100 k, 10 k,10 k, 10 k
Range: 400mVs, 40mVs, 4 mVs, 0.4mVs
Resolution: 0.1 mVs, 0.01 mVs, 0.001 mVs, 0.0001 mVs
Accuracy : Migration ±10 µVs ±DC integral drift
Threshold ± 0.25% readings (maximum change rate <10Vs/s)
Min. input: dφ/dt: 20 µVs/minute
Max. input: dφ/dt: 60Vs/s
Integral migration: ±1µVs/minute |
| DC Peak Value |
Resolution: 4¾ digits
Integrating capacitor: 1 µF
Input resistance: 100 k, 10 k, 10 k, 10 k
Range: 400mVs, 40mVs, 4 mVs, 0.4mVs
Resolution: 0.1 mVs, 0.01 mVs, 0.001 mVs, 0.0001 mVs
Accuracy : Migration ±100 µVs ±DC integral drift
Threshold ± 5% readings (maximum change rate <10Vs/s)
Max. input: dφ/dt: 60Vs/s |
| AC Measurement |
Resolution: 4¾ digits
Integrating capacitor: 0.1 µF
Input resistance: 100 k, 10 k, 10 k, 10 k
Range: 40mVs, 4mVs, 0.4 mVs, 0.04mVs
Resolution: 0.01 mVs, 0.001 mVs, 0.0001 mVs, 0.00001 mVs
Frequency response range: 2 Hz to 50 kHz
Accuracy: ±1% reading ± 4uVs(10Hz-10kHz)
±5% reading ± 4uVs(2Hz-10Hz: 10kHz-50kHz)
Integral drift: N/A |
| Front Panel |
|
| Interface |
Parallel interface: DB-25 parallel port
Serial interface: Standard RS-232C, changeable baud rate |
| Alarm |
Quantity: 3
Set: High and low critical point a, in and out of region, turn on/off buzzer
Output: Buzzer sound , high , middle and low alarm relay close contactor. |
| Relay |
|
| General |
Environment temperature: -15 ~ 55 ° C.
Power supply requirements: 100, 120, 220, 240 VAC, +5% -10%, 50 or 60 Hz, 50 VA
Size: 240mm W * 345mm L * 106 mm H
Weight: approx. 4 kg |
4. Screen Description
Most of data above the white line are measured values:
<+0.0000 >: the current measured value, display 4 digits, 1 sign bit, 1 decimal bit.
<mVs>: unit of measured value, it can be set by the "Unit" key.
<R>: R means that it's in the remote control mode at the moment, without it means local control mode; in a remote control mode, only "Local" key is valid in the keyboard, other keys are locked.
<2013-7-6 10:7:42> is the current system time.
<PH:+0.0000>: at the peak hold mode, value displayed, means it is the positive peak value.
<PL:+0.0000>: at the peak hold mode, value displayed, means it is the negative peak value.
<PP:+0.0000>: the absolute value of the peak value.
<1:-0.012>: under the measurement mode, the user press enter to save data, 1: means the current display data's serial number, -0.012 is the saved data values; under this mode, through "←", "→" these two keys to view different saved values.
Most of data below the white line are current state:
<DC>: shows the current mode is DC mode, DC/AC state switching by "AC/DC" key.
<Uc1>: the current measuring coil's serial number.
<Coil>: the coil type.
<Range:>: the current range
<Alarm>: alarm status.
5. Configuration
| Item |
Title |
Quantity |
Unit |
| 1 |
LZ-840 Flux Meter |
1 |
set |
| 2 |
Power line |
1 |
piece |
| 3 |
User's Manual |
1 |
piece |
| 4 |
Warranty Card |
1 |
piece |
CAUTION:
Check off each item on the above packing list as it is unpacked. Contact LINKJOIN immediately if there is a shortage pf parts or accessories.
Because the products of our company are in constant updates, the change of products without pre-notice.
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