This document provides instructions for operating the Model 1900-7 and 1901-7 Temperature Indicators by Scientific Instruments, Inc., including specifications, operating procedures, and calibration procedures.
This manual provides instructions for the Scientific Instruments Model 1900-7 and 1901-7 microprocessor-based temperature indicators. These instruments are designed to operate with ruthenium oxide sensors to provide accurate temperature measurements ranging from 1.5K to 273K. The Model 1901 includes additional features such as alarm set points, relay outputs, and an RS232 interface.
| Temperature Range | 1.5 to 273K |
|---|---|
| Display | 3-Digit LED |
| Resolution | 0.1K from 1.5 to 99.9K |
| Accuracy | +/- 0.15K from 1.5 to 80K |
| Power Required | 9 VDC @ 500 ma |
The instrument accommodates Scientific Instruments Model RO-105, RO-701GE, and RO-600 sensors.
A readout of '000' indicates an open sensor, while '555' indicates a possible shorted input or an out-of-range input.
The computer should be set to a baud rate of 9600, no parity, 8 data bits, and 1 stop bit.