Teaching amp meter laboratory dc ampere meter and Portable teching laboratory dc ammeter for school laboratory dc ammeter 3A

Uses and applications:

This series of meters is a direct imitation of power measurement display instruments, measuring DC current and voltage, AC current and voltage, frequency, power factor, phase sequence power, synchronization instructions and other non-power measurements. It has been widely used in a variety of AC and DC transmission and distribution systems, power control panels and other electrical devices, in the industries of maritime shipping, rail transport, chemical flameproof, low voltage equipment, construction equipment, generators, machinery equipment, etc. Being able to make electrical measurement and non-power measurement, it is a high-end instrument applied in general environmental conditions.

Standards and certifications:

The pointer meter is produced on the standard of GB/T7676-1998 and the digital meter is on the standard of GB/T22264- 2008. Its safety performance is on the standard of GB4793 and IEC61010. The dial scale line and the pointer is designed to meet the German standards of DIN43790 and DIN43802. The shape and hole size of the meter is on the standards of GB/T1242 and IEC61554. All the products of MEIHENG meters Company have gone through the national CE certification, and have got ISO: 9001 certification.

The outer casing of the panel meter:

The base of the series of meters is made of TBT flame-retardant plastic, and its Vicat temperature is 130℃. The outer shell is made of ABS flame-retardant plastic, and its vicat temperature is 85℃.

Accuracy Level:

The pointer meter: AC and DC voltmeter and ammeter to the level of 1.5 or 2.5 power meter to the level of 2.5, frequency meter Accuracy level to the level of 2.5, and power factor meter to the level of 2. 5.

The surface of the dial:

The surface of the dial uses aluminum alloy, white paint, black ink printing or laser printing. The dial can be customized according to the customer sample dials (overprint colors can be customized). The luminous dial uses the PC panel.

Zero regulator:

Except the reading meters without mechanical zero, all other meters have pre-positive zero regulator, used to adjust the meter machinery zero.

Benefits of the product (the dial can be replaced):

For the pointer meter, you can open the sealing, insert or outer the dial. As for the AC ammeter, as long as the secondary current of the transformer is the same, you can replace the dial with the accuracy unchanged. As for the DC ammeter, as long as the shunt output signal or the meter input signal is the same, you can replace the dial even if the meter is of different specifications, with the accuracy unchanged.

Technical Specification:

 
Outline and Mounting Dimensions:

Changes caused by the temperature:

Temperature range for reference: 23℃, 13℃-23℃, and 23℃~33℃. The changes caused by the impact of temperature are not allowed to be out of the range of the level index 00%.

The Installation:

Unless specified, the meter is usually installed in a vertical position. Other installation positions such as horizontal and inclined position can The installation be installed according to the customer requirements. The corresponding level of accuracy is only valid to the regulated installation position. The meter has two kinds of instruction angles: right angle 90 wide angle 250.

Anti-vibration and anti-shock:

Anti-vibration: complies with the standard of IEC60068-2-6; frequency sweep range: 10-55-10Hz; displacement amplitude:±0.15mm,±0.3mm; Frequency sweep cycles: 5 times; sweep rate 10ct/min, maximum acceleration: 147m/s2(15g), 490m/s2 (50g); RMS acceleration: 6. 06g; vibration time:15 min. Anti Machinery shock: complies with the standard of lEC60068-2-27. 

Overload ammeter:

The conventional overload multiple times should be once or twice, and it can be customized to once, twice, 3 times and so on according to the user requirements. Its function is to indicate the approximate transient overload current value, such as the start-up current when the motor stars, and so on.

Extrinsic current shunt:

The voltage specifications of the extrinsic current shunt of DC ammeters are 150mV, 100mV,75mV, 60mV and 50mV, which can be customized. The resistance of the conducting wire connecting the meter and the current shunt should within the range of 15-25mto ensure the accuracy of the meter.

Further information:

1. Plastics materials: all raw materials are brand-new and second-hand materials are forbidden. Furthermore some of them are supplied by super branding companies like DSM, Mitsubishi.

2. There is just one level of quality as A in MEIHENG and we are aim to provide the excellent articles to our clients and help them gain more market shares.

3. ODM: we are providing ODM services to the super companies (more than 15) who are top-10 electrical industrial companies in their country. Just show us your ideas and we will present a solution.

FAQ

A. How's the delivery time?
Depend on your quantity, usually within 20days after receiving deposit

B. Would you accept OEM/ODM service?

Glad to say that there is planning department, technical department and mould tooling center in

our factory. For the OEM & ODM, it is ok for us if your brand, market shares are great.