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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.
Features
16-key keyboard, with multiplexing function
AC/DC mode
Embedded microcomputer control, automatic or manual range
4 ¾ digit display resolution, LCD display with back light function
With 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 computer
With function of analog signal output
Hardware peak hold
High and low threshold alarm function for local and remote control
Flexible range expansion
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 | Display: LCD display with back light function Display resolution: 4¾ bit Display refresh rate: 3 times/s Display unit: Vs, WbN, MxN, Vs/N, Wb, Mx, Gs, T, %, Oe, A, Wb*cm^2, Unit number: µ, m, K, M, G Keys: 16 key keyboard, with the multiplexing function |
| 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 | Relay quantity: 3 Methods: normally open, normally closed Contactor load: 30 V DC at 2 A Action: high and low alarm consistence , can be manually operated. Monitor output range: ± 5V Accuracy: ± 1% of display value of ± 10 mV, (DC to 10 kHz) ± 5% of display value ± 10 mV, (10 kHz to 50 kHz) Minimum load resistance: 1 K Connector: DB25 core plug. |
| 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 |
Configuration
| Item | Title | Qua. | 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:
As the products of our company are in constant updates, the change of products without pre-notice.
