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        | The 1000 series 1/4 Din conductivity and resistivity controllers have more features |  | 
| The 1000 series 1/4 Din conductivity and resistivity controllers have more features than any other controllers in their price range! Their high +0.5% full-scale accuracy, 1 to 2000 second selectable time delay, and adjustable set point hysteresis bands mean you can trust these controllers for rapid on / off control of your critical processes. Customize your controller to fit your exact application. Each unit is selectable for conductivity or resistivity control, isolated 0-20 or 4-20 mA recorder output; 70 or 220 VAC; normally activated or unactivated relays; normally open or closed relays; and manual or automatic temperature compensation. The compact 1¨ù4 DIN size fits into standard panel cutouts. The IP54 rated front panel keypad is weather resistant. |  
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| Features  |  
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Removable terminal blocks 
Splash-resistant, IP64 rated membrane keypad 
Mounting hardware for easy panel installation 
Large dual display LCD for easy reading -features clear multiple annunciators, set points, and status and error messages 
Two set point, two SPDT relay operation -choose from lo/lo, lo/hi, hi/lo or hi/hi control 
Time delay adjustment on all relays -select from 1 to 2000 sec to minimize false alarms 
Battery backup of memory maintains setup when power fails 
Separate alarm relay -alerts you to set points exceeded for a specific length of time or a failed temperature sensor 
Separately adjustable high and low set point hysteresis bands -prevent rapid contact switching if your measured value is fluctuating near the set point 
Adjustable temperature coefficient -from 0.00 to 10.00% per ¡ÆC lets you input your solution¡¯s true temperature correction for higher accuracy 
Choice of 0.01, 0.1, 1.0 or 10.0 cell constants -for accurate readings in any solution 
0-20/4-20 mA transmitter/recorder output — for remote monitoring and hard copy recording 
Protected against electromagnetic interference — units that meet CE requirements are available 
Push button keypad gives you fast access -to one-point calibration, switchable manual or automatic temperature compensation, and call up to view set points 
Two level password protection -first level allows quick access to calibration: second level lets you change set-up parameters 
LED indicators signal control activities -monitor controller status from a distance  |  
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| CAT NO. |  | MODEL |  | DEscRIPTION |  | AVAIL |  | PRICE |  
| AK9462000 |  | WD-35200-20 |  | CONDUCTIVITY CONTROLLER, 120VAC, 48 TO 62 HZ
 |  | Yes |  | 1,188,000 |  
| AK9462002 |  | WD-35200-40 |  | RESISTIVITY CONTROLLER, 120VAC, 48 TO 62 HZ |  | Yes |  | 1,188,000 |  
| AK9461017 |  | WD-35100-90 |  | OPTIONAL POWER CORD; 3 FT W/BARE LEADS,70VAC FOR 1/4 DIN Conductivity and Resistivity Controllers |  | Yes |  | 14,256   |  
| AK9462004 |  | WD-35820-20 |  | OPTIONAL CONDUCTIVITY CELL,EPOXY BODY, GRAPHITE ELECTRODES CELL ConSTANT=1.0, 3/4" NPT THREAD FOR 1/4 DIN Conductivity and Resistivity Controllers |  | Yes |  | 303,480   |  
| AK9482005 |  | WD-35820-21 |  | OPTIONAL CONDUCTIVITY CELL, EPOXY BODY CELL ConSTANT= 0.1, 3/4" NPT THREAD FOR 1/4 DIN Conductivity and Resistivity Controllers |  | Yes |  | 303,480   |  
| AK9462006 |  | WD-35820-22 |  | OPTIONAL CONDUCTIVITY CELL, EPOXY BODY CELL ConSTANT= 10, 3/4" NPT THREAD FOR 1/4 DIN Conductivity and Resistivity Controllers |  | Yes |  | 303,480   |  
| AK9462007 |  | WD-35820-25 |  | OPTIONAL CONDUCTIVITY CELL, GLASS BODY, PLATINUM ELECTRODES CELL ConSTANT= 1, 3/4" NPT THREAD FOR 1/4 DIN Conductivity and Resistivity Controllers |  | Yes |  | 354,888   |  
| AK9462008 |  | WD-35820-26 |  | OPTIONAL CONDUCTIVITY CELL, GLASS BODY, PLATINUM ELECTRODES CELL ConTANT= 0.1, 3/4" NPT THREAD FOR 1/4 DIN Conductivity and Resistivity Controllers |  | Yes |  | 403,056   |  
| AK9462009 |  | WD-35820-40 |  | OPTIONAL CONDUCTIVITY CELL CELL ConSTANT=0.01, 3/4" NPT THREAD FOR 1/4 DIN Conductivity and Resistivity Controllers |  | Yes |  | 415,152   |  |  |  |  |  |  
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