Introduction: PTB flow totalizer is an intelligent programmable instrument. The instrument can accept flow sensor signals with pulse signal output or analog current signal output, and is equipped with a pressure transmitter and a temperature transmitter to form a high-precision flow measurement system. With the support of the instrument software, online temperature and pressure compensation operations can be performed on the measured medium to improve the measurement accuracy. The instrument provides more than 20 working modes, which can display the accumulated mass flow, standard volume flow or working volume flow, and also display the temperature, pressure, instantaneous flow, density, frequency and other parameters of the measured medium. Instrument programming parameters and cumulative flow value will not be lost for a long time after power failure. The instrument has an anti-theft function. Automatically record and display the number of parameter modifications in use, the cumulative power outage time or the number of power outages. Features: 1. It can cooperate with the radio to form a wireless network, realize wireless telemetry, and obtain parameters such as instantaneous flow, cumulative flow, temperature, pressure, and power-down time of different measurement points in different geographical distributions in time; 2. Can cooperate with modem, our company is responsible for the construction of the whole system. 3. The original method of externally setting parameters is adopted, which can be plugged and unplugged under power, with friendly man-machine interface and convenient operation. 4. It has two display modes, digital and analog, which can meet the needs of users. 5. In order to improve the reliability of digital communication, a dual-CPU structure is adopted, and an original data buffer technology is used between the two CPUs, and the communication tasks are managed by a dedicated CPU. Technical parameter: Power supply: 220VAC, 50Hz; Upper plate opening size: width × height = 152 × 76; Working environment: temperature -30 ~ 50 ℃; Relative humidity: ≤90%; signal input: Flow signal: power supply 24VDC or 12VDC, pulse signal 1-5000Hz input, or power supply 24VDC, 4-20mA input; Pressure signal: power supply 24VDC, 4-20mA input; temperature signal: power supply 24VDC, 4-20mA input, or three-wire system, thermal resistance or thermocouple input; Signal output: 4-20mA standard signal; Display: instantaneous flow, cumulative flow, temperature, pressure or frequency and power-off time, etc.; Communication interface: RS-232 or RS-485 interface; It is suitable for flow totalization of various flow sensors.
Introduction: PTB flow totalizer is an intelligent programmable instrument. The instrument can accept flow sensor signals with pulse signal output or analog current signal output, and is equipped with a pressure transmitter and a temperature transmitter to form a high-precision flow measurement system. With the support of the instrument software, online temperature and pressure compensation operations can be performed on the measured medium to improve the measurement accuracy. The instrument provides more than 20 working modes, which can display the accumulated mass flow, standard volume flow or working volume flow, and also display the temperature, pressure, instantaneous flow, density, frequency and other parameters of the measured medium. Instrument programming parameters and cumulative flow value will not be lost for a long time after power failure. The instrument has an anti-theft function. Automatically record and display the number of parameter modifications in use, the cumulative power outage time or the number of power outages.
