Orion Model 135A and 136S Advanced Waterproof Conductivity/TDS/Salinity/Temperature Meters
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Orion Model 135A and 136S Advanced Waterproof Conductivity/TDS/Salinity/Temperature Meters
Wide Cell Constant Range for Maximum Compatibility
Versatile Temperature Compensation Options
100 Point Data Log, Bi-directional RS232 and Computer Software for Easy Data Transfer
The Model 135A and 136S are designed for measurement of conductivity, salinity and total dissolved solids and temperature. Wide measurement range allows for a variety of applications. The meters calibrate via cell constant adjustment method. The Model 135A and Model 135S also calibrate via DirectCalTM, which uses direct entry of conductivity standards. In addition to the basic model features, a 100 point datalogger documents readings for GLP requirements. The RS232 interface and software program allow simple data collection and transfer. Other advanced features include calibration timer, real time clock and calibration printout. The meter is supplied with a built-in quiver, neckstrap, RS232 cable and data transfer software. The Model 136S is intrinsically safe for use in a non-sparking environment. Complete field kit available. Meter warranty is 3 years.
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C754-1 & C754-2 Series |
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Model 135A and 136S |
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Conductivity Range |
0.0 µS/cm to 500 mS/cm |
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4-electrode cell, cell constant 0.55 cm-1 |
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0.0 µS/cm to 100.0 µS/cm |
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2-electrode cell, cell constant 0.1 cm-1 |
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Conductivity Accuracy |
<1% of meas. value + 4 counts |
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Conductivity Resolution |
0.01 |
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Salinity Range |
0.0 to 70.0 (10 to 30°C) |
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Salinity Accuracy |
<0.3 °C + 1 count |
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Total Dissolved Solids Range |
0 to 1999 mg/L (10 to 120 °C) |
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Temperature Range |
-20 °C to 120°C |
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Temperature Resolution |
0.1 |
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Temperature Accuracy |
0.3 |
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Cell Constant |
0.001 cm-1 to 199.9cm-1 |
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Cell Calibration |
Direct entry of cell constant automatic determination |
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of cell constant by KCI solution: 0.01, 0.1, 1 M |
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Temperature Compensation |
NTC 30 (automatic detection) or manual, linear TC |
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characteristic 0.00 to 9.99%/°C or non-linear for |
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natural waters and ultrapure water (NLF) |
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Datalogger |
100 (automatic storage of measured values, either |
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timer-controlled, event-controlled or manual) |
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Remote Interface |
Serial, bidirectional, asynchronous, 600, 1200, 2400, |
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4800 or 9600 baud rate |
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Waterproof Rating |
IP66 |
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Agency Approvals |
CE, FM & Ex Intrinsically safe |
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Display |
Custom LCD |
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Inputs |
8 WP Pin DIN |