GPWK-101 Power Transmitter GPWK-101 Power Transmitter GPWK-101 Power Transmitter Yueqing Tiankang Instrument 0577-61725572 Yellow 13676575538 Suitable for direct measurement and display of current parameters such as current, voltage, frequency, power, etc. Good stability, anti-vibration, digital zero calibration, calibration, high precision, cost-effective advantages. Design institute designated manufacturer.
GPWK-101 power transmitter advantages:
1. It is not easily affected by parasitic thermocouple and resistance drop and temperature drift along the wire resistance. The transmission line can use very cheap and finer twisted pair wires.
2. When the output resistance of the current source is large enough, the voltage in the wire loop is sensed by the magnetic field coupling and will not have a significant impact, because the current caused by the interference source is extremely small, and generally the twisted pair can be used to resist interference reduction.
3, capacitive interference will cause resistance-related errors, for 4 ~ 20mA two-wire loop, the resistance is usually 250Ω (sample Uout = 1 ~ 5V) This resistance is not small enough to produce significant errors, therefore, the allowable length of wire Longer and farther than voltage telemetry systems;
4. Each single reading device or recording device can switch between different channels with different lengths of wire, which does not cause differences in accuracy due to the unequal length of the wire.
5. Use 4mA for zero level to make it easy to determine open circuit or sensor damage (0mA state).
6. It is easy to add surge protection and lightning protection devices at the two-wire output port, which is conducive to safe lightning protection and explosion protection.
DH4-20mA Power Transmitter Transmitter Module, is the Chinese company's Ark company uses STMicroelectronics (ST) ASIC chip, for the realization of passive AC isolated sensors (mutual inductance principle) of the two-wire current telemetry technology and fixed production of single Chip module products. The passive AC isolated sensor (inductance of mutual inductance) input current and voltage signal is rectified and filtered and I/V converts to output a DC voltage signal U2 that changes linearly with I1. U2 acts as a floating control signal to control the module output 4 to 20 mA. In the standardized current loop, the module implements a linear proportional loop current that the passive AC isolated sensor signal is converted into two connection lines. The receiver detects the loop current by measuring the voltage drop across the known resistor RL.
GPWK-101 power transmitter advantages:
1. It is not easily affected by parasitic thermocouple and resistance drop and temperature drift along the wire resistance. The transmission line can use very cheap and finer twisted pair wires.
2. When the output resistance of the current source is large enough, the voltage in the wire loop is sensed by the magnetic field coupling and will not have a significant impact, because the current caused by the interference source is extremely small, and generally the twisted pair can be used to resist interference reduction.
3, capacitive interference will cause resistance-related errors, for 4 ~ 20mA two-wire loop, the resistance is usually 250Ω (sample Uout = 1 ~ 5V) This resistance is not small enough to produce significant errors, therefore, the allowable length of wire Longer and farther than voltage telemetry systems;
4. Each single reading device or recording device can switch between different channels with different lengths of wire, which does not cause differences in accuracy due to the unequal length of the wire.
5. Use 4mA for zero level to make it easy to determine open circuit or sensor damage (0mA state).
6. It is easy to add surge protection and lightning protection devices at the two-wire output port, which is conducive to safe lightning protection and explosion protection.
DH4-20mA Power Transmitter Transmitter Module, is the Chinese company's Ark company uses STMicroelectronics (ST) ASIC chip, for the realization of passive AC isolated sensors (mutual inductance principle) of the two-wire current telemetry technology and fixed production of single Chip module products. The passive AC isolated sensor (inductance of mutual inductance) input current and voltage signal is rectified and filtered and I/V converts to output a DC voltage signal U2 that changes linearly with I1. U2 acts as a floating control signal to control the module output 4 to 20 mA. In the standardized current loop, the module implements a linear proportional loop current that the passive AC isolated sensor signal is converted into two connection lines. The receiver detects the loop current by measuring the voltage drop across the known resistor RL.