Overview
| brand | Long Jia | Does it support processing customization | |
| Imported or not | no | Safety level | |
| Standard attachments | Standard configuration | ||
| material quality | Reference voltage | ||
| Measuring current range | Measuring voltage range | ||
| Measuring resistance range | measuring range | zero point zero one μ Ω~1.111K Ω | |
| Measurement function | size | ||
| source | battery | ||
| Current multiplier | Voltage measurement error | Elim | |
| Resistance range | Does it support diode testing | ||
| Working power supply | power | ||
| ambient temperature | 20 ± 5 ℃ | Basic current | |
| AC current range | AC voltage range | ||
| accuracy | Net weight | ||
| Measurable current range | style | ||
| type | Pointer type resistance measuring instrument | frequency | |
| Certification and standards | Applicable voltage | ||
| Applicable scope | output voltage | ||
| input voltage | 220V | Input signal amplitude | |
| Does it support data retention | Does it support on/off beep testing | ||
| display | relative humidity | 20%~75% | |
| Calibration cycle | model | QJ57 | |
| Repair current | Repair scope | ||
| colour | Scope of use | ||
| DC current range | DC voltage range | ||
| weight | twenty | Number of boxes packed | |
| Accuracy | Does it support automatic shutdown | ||
| Does it support automatic range | Maximum current | ||
| Max Count | Minimum number of packages | ||
| resolving power | Nameplate capacity | ||
| Power frequency | Insulation strength | ||
| Output waveform | Host volume | ||
| Battery type | Size of voltage divider | ||
| Waveform distortion rate | producing area | Shanghai | |
| Order number | four | Processing customization | no |
| Article number | LJ04 | Overall dimensions | 300 * 250 * 160mm |
| Is it a cross-border export exclusive source of goods | no | Repetitive error | zero point zero five |
| Test voltage | twelve | ||
Product Details
The QJ57 model is a precision DC double arm bridge that uses a Kelvin line portable type. Measurement range 0. 01 μ Ω~1.111K Ω is divided into seven ranges. Due to the built-in zero indicator and the ability to install working batteries, measurements can be made without any accessories except for measuring wires. Suitable for precise measurement of various low value DC resistances, such as the conductivity of metal conductors, DC shunt resistance, switch contact resistance, cable resistance, and DC resistance of various motors and transformer windings, in laboratories and workshops of industrial and mining enterprises, scientific research institutions, and even field construction sites.
The accuracy level of this instrument is 0.05.
The main resistance components of the 2 bridge are made with low temperature coefficient and undergo strict process treatment and long-term manual aging; High sensitivity, low noise, and low power consumption.
2、 Main technical indicators.
2.1 All technical specifications of QJ57 type comply with GB3930-83 (branch bridge for measuring resistance)
2.2 Main parameters
2.3 Basic error tolerance limit:
Elim=± C% (RN/10+x)
In the formula: Elim: allowable limit of basic error, RN: reference value
C: Accuracy level index X: measurement disk display value
