Chapter 8: Legal for Trade Sealing
8.1 Lead Sealing
Indicators in the ABS enclosure can be sealed for commercial (Legal for Trade)
application as follows:
1. Power off the indicator.
2. On the back of the indicator, locate the DIP switch cover.
3. Thread a wire security seal through both drilled head screws securing the calibration
switch cover as well as the single drilled head screw holding on the rear panel.
Appendix A: Specifications
Analog Specifications:
Full Scale input Signal 30mV, including dead load
Minimum Sensitivity–Non H-44 0.4μV/ grad
Minimum Sensitivity–H-44 1.0μV/ grad
Input Impedance 30MΩ, typical
Calibration Method Software Calibration, with long term storage in EEPROM
Excitation Voltage +5VDC
Power AC110V – AC230V
Operation Temperature 10℃ -- + 40℃
Storage Temperature - 25℃ -- + 70℃
Digital Specifications:
Microcontrollers W78E58B
Digital Filtering Software Selectable
Serial Communications:
Serial Port Full Duplex, 300, 600, 1200, 2400, 4800, 9600 Baud
8 data bits, no parity, 1 stop bit
7 data bits, odd parity, 1 stop bit
7 data bits, even parity, 1 stop bit
Operator Interface:
Display – LED 1” (25mm), 6 Digit, 7-Segment, LED
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