DMS-40PC-4/20S-24RL中文资料4-20mA Input 4½ Digit Process Monitors with Full-Size LED Displays数据手册Datel规格书

描述 Description

New +24V Isolated-Power ModelsThe DMS-40PC-4/20S Series' superior design makes them ideal for use in demanding 4-20mA process monitoring applications requiring a full 4½ digits (0-19999) of display resolution. Their full-size, 0.52\" (13.2mm) high, LED displays can be read in virtually any lighting condition and are available in green, high-intensity red, or low power red.
Two operating power supply ranges are available: a wide-input +7.5 to 32V model for use with popular +12Vdc and +24Vdc industrial supplies, and +4.75 to 5.25V models for use with +5V logic supplies. The reverse-polarity protected +7.5-32V red LED model consumes only 30mA from a +24V supply, but still provides excellent display brightness.
The DMS-40PC-4/20's input, span, and offset circuits all employ super-stable, ±0.5% thin-film chip resistors. Long-term stability and accuracy are assured by driving these tight-tolerance resistors with an ultra-stable, ±0.2% bandgap voltage reference. And, unlike many competing designs, the two precision 20-turn span and zero adjust potentiometers do not interact with one another.
All range-change and decimal point selections are made by configuring two goldplated, vibration-resistant, six-position DIP switches. To further enhance reliability, both power supply and current loop connections are made via reliable screw-type terminal blocks. All these outstanding features make the DMS-40PC-4/20S Series meters the most rugged 4½ digit LED display process monitors available.

特性 Features

• Full-size, 0.52\" (13.2mm) high, LED digits
• +7.5- 32Vdc model draws 30mA
• +24V Isolated-power models
• Dip-switch selectable range, offset, and decimal points
• Non-interacting, 20-turn, gain (span) and offset (zero) adjustments
• Insensitive to ground loops
• 103 Ohm max. loop burden
• Vibration-resistant package; reliable screw terminal connections
• Hundreds of different input/readout combinations
• Miniature size: 2.17\" x 0.92\" x 1.02\"
   (55mm x 23mm x 26mm)