The Model 900M is a microprocessor based
Resistivity Controller with outputs for Alarm and/or Control purposes.
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AUTO RANGING, 2 M OHMS-CM to 20 M OHMS-CM
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TWO INDEPENDENT SENSOR INPUTS
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BOTH CHANNELS SIMULTANEOUSLY MONITORED/CONTROLLED
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FULL 3-D CURVE TEMPERATURE COMPENSATION
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TWO PROGRAMMABLE ALARM/CONTROL RELAYS
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TWO PROGRAMMABLE ALARM/CONTROL OUTPUT TRANSISTORS (OCT)
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0-100 DEGREES C TEMPERATURE MEASUREMENT/COMPENSATION
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COMPATIBLE WITH STANDARD RESISTIVITY CELLS
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ACCESS CODE PARAMETER PROTECTION
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EEPROM PARAMETER MEMORY
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AUDIO ALARM/ANNUNCIATOR
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SEPARATE ALARM AND RANGE SETTINGS FOR EACH SENSOR
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ALL PARAMETERS SET IN SOFTWARE‑NO POTS OR
SWITCHES
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WET STATION ENCLOSURE
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BRIGHT FOUR DIGIT LED DISPLAY
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SMOOTH FACE CONSTRUCTION
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QUICK DISCONNECT REAR TERMINALS
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HIGH RESOLUTION 20,000 COUNT A/D CONVERTER
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SPECIAL 'LOCKING' INPUT CIRCUITRY FOR MAXIMUM NOISE
IMMUNITY
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RANGE
(Resistivity) |
2.00 - 20.00 M OHMS-CM
|
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RANGE (Temperature) |
0.0 - 100.0 Degrees C |
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RESOLUTION
(Resistivity) |
.01 M OHMS-CM |
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RESOLUTION
(Temperature) |
0.1 Degrees C
|
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NOISE REJECTION |
NMR - 60
db @ 60 HZ
CMR -120 db @ 60 HZ
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MEASURING TIME |
4 Conversions/Sec |
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DISPLAY |
Four 0.56 Inch High, Seven Segment, LED
Uniplanar numerals. Six Discrete LEDs
(Red, Green, Amber)
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ANNUNCIATOR |
Audio Tone, ~ 2500 HZ |
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SETUP MEMORY |
EEPROM, All Parameters
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MEMORY RETENTION |
10 Years w/o Power
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SENSOR |
Thornton type 208
|
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CONTROL |
On/Off Relay
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OPERATING RANGE |
0 to 50 Degrees C
|
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STORAGE RANGE |
-40 to 60 Degrees C
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CONSTRUCTION |
Enclosure - Kydex, Black
Face - Lexan, Back Printed
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SIZE |
8.25 x 3 3/4 x 5.25 inches (HxWxD)
210 x 94 x 133mm
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WEIGHT |
< 3 Lbs. (1.8 kg)
|
|
CONNECTION |
Rear, Weidmueller, .200 CC
Communications - DB9 (Optional)
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OUTPUT |
Open Collector Transistor, 100 ma. max. External
Audio - OTC, 100 ma. max. 12
VDC provided
Relay - Optically isolated
5 amp, 120 VAC
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POWER |
900MA - 10 VA,
24 VAC +10%, 50/60 HZ
900MB - 10 VA, 120 VAC +10%, 50/60 HZ
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MODEL |
VOLTAGE |
|
900MA |
24
VAC |
|
900MB |
120
VAC |
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