概述

称重仪表也叫称重显示控制仪表，是将称重传感器信号（或再通过重量变送器）转换为重量数字显示，并可对重量数据进行储存、统计、打印的电子设备，常用于工农业生产中的自动化配料，称重，以提高生产效率。



美国Transducer Techniques DPM-3是一款智能插拔式TEDS IEEE 1451.4仪表，连接称重传感器或者扭矩传感器TEDS接头，可自动校准。

显示范围

-99999 - +99999

输入电压额定值（标准）85-264 Vac或90-300 Vdc

输入电压额定值（低压选项）12-32 Vac或10-48 Vdc

电源线频率DC和47-63 Hz

功耗，最大5瓦

推荐负载350-10K欧姆电桥

电压和电流等级（可选跳线）5 Vdc±5％，最大100 mA

10 Vdc±5％，最大120 mA

24 Vdc±5％，最大40 mA

励磁输出纹波最大100 mVp

与电源和输出250 Vac隔离

将绝缘强度与功率绝缘，并输出3.5 kV交流电5秒钟，2.3 kV交流电1分钟

隔离信号公共50 Vdc

继电器选项的电源由电表供电

通过前面板按钮或RS232 / 485进行设定值设置

更新速率60 Hz时56 / s，50 Hz时47 / s

对输入信号的响应（最小值）显示更新率

输入信号（可选）过滤或未过滤的输入信号

激活模式（可选）高于或低于设定值，锁定或非锁定，禁用

输出时间延迟（可选）1至128个读数

前面板启用/锁定模式（可选）1）显示和更改设定值

2）显示但不更改设定值

3）既不显示也不更改设定值

警报状态指示2个或4个红色LED指示灯

状态指示设置（可选）输出打开或关闭或禁用时点亮

Form C, SPDT Relay Output:

AC Rating 8A @ 240 Vac

DC Rating 8A @ 24 Vdc

Isolation rating between signal common and contacts 250 Vac

Insulation dielectric strength between signal common and contacts

3.5 kV ac for 5 sec, 2.3 kV ac for 1 min

Form A, SPST Solid State Relay Output:

AC Rating 120 mA @ 140 Vac

DC Rating 120 mA @ 180 Vdc

Isolation rating between signal common and contacts 250V ac

Insulation dielectric strength between signal common and contacts

3.5 kV ac for 5 sec, 2.3 kV ac for 1 min

Power to Analog Output Option Powered by meter

Output Levels 0-20 mA, 4-20 mA, 0-10V, -10 to +10V

Voltage Compliance, 0-20 mA Output 12V (0-600 Ohm load)

Current Compliance, 0-10V, -10 to +10V Output 2 mA (5 kOhm or higher load)

Accuracy Meter input accuracy ±0.02% of full scale analog output

Resolution 16 bit (1 part in 65,536)

Response Time 50/60Hz update rate

Scaling of Reading for Zero Output -99,999 to +99,999

Scaling of Reading for Full Scale Output -99,999 to +99,999

Isolation rating between signal common and analog output 250V ac

Insulation dielectric strength between signal common and analog output

3.5 kV ac for 5 sec, 2.3 kV ac for 1 min

Control Inputs (CMOS/TTL levels, logic 0 = tied to digital ground, logic 1 = open)