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LEEDS & NORTHRUP Controls

Our inventory currently carries over 9 new and used Leeds & Northrup Controls. Please click into any of the products listed below to view product details:

 

SKU Model Description
21663 74419 LEEDS & NORTHRUP 74419 CONTROL BOARD
20068 74441 LEEDS & NORTHRUP 74441 CONTROL BOARD
18578 74431 LEEDS & NORTHRUP 74431 CONTROL BOARD
18313 78705 LEEDS & NORTHRUP 78705 CONTROL BOARD
18048 74417 LEEDS & NORTHRUP 74417 CONTROL BOARD
15183 228261 LEEDS & NORTHRUP 228261 CONTROL BOARD
10589 74403 LEEDS & NORTHRUP 74403 CONTROL BOARD
9229 450-6-A104-51-12 LEEDS & NORTHRUP 450-6-A104-51-12 TEMPERATURE CONTROLLER
8423 74867 LEEDS & NORTHRUP 74867 CONTROL BOARD
Leeds & Northrup Millitemp Indicators & Controllers Instructions & Manual dq
Leeds & Northrup Millitemp Indicators & Controllers Instructions & Manual dq
$8.99 USD reduced from $10.00 USD
LEEDS NORTHRUP 056861 KEYBOARD CONTROL PANEL 678
LEEDS NORTHRUP 056861 KEYBOARD CONTROL PANEL 678
$12.50 USD reduced from $14.00 USD
Leeds Northrup Control System Employing L&N C.A.T Control Units Directions
Leeds Northrup Control System Employing L&N C.A.T Control Units Directions
$14.00 USD reduced from $15.00 USD
Leeds & Northrup Model C1 M-Line Series 71 C.A.T Controller Directions 177251
Leeds & Northrup Model C1 M-Line Series 71 C.A.T Controller Directions 177251
$15.03 USD reduced from $17.00 USD
1951 Leeds & Northrup Philadelphia Electromax Temperature Controllers Print Ad
1951 Leeds & Northrup Philadelphia Electromax Temperature Controllers Print Ad
$15.31 USD reduced from $17.00 USD
Leeds Northrup Series 80. 3-Action C.A.T Controller Directions 177531 Issue 2
Leeds Northrup Series 80. 3-Action C.A.T Controller Directions 177531 Issue 2
$15.76 USD reduced from $17.00 USD
Leeds Northrup Speedomax H Recorders, Controller, Indicators Catalog 179001~1970
Leeds Northrup Speedomax H Recorders, Controller, Indicators Catalog 179001~1970
$15.77 USD reduced from $17.00 USD
Leeds Northrup Speedomax H Recorders, Controller, Indicators Catalog 179001~1966
Leeds Northrup Speedomax H Recorders, Controller, Indicators Catalog 179001~1966
$15.79 USD reduced from $17.00 USD
Leeds & Northrup Series 80 3-Acting C.A.T. Controller-Directions 177531 Rev. C
Leeds & Northrup Series 80 3-Acting C.A.T. Controller-Directions 177531 Rev. C
$20.00 USD reduced from $22.00 USD
Leeds & Northrup 420 C.A.T. Controller Directions 177546 Issue 5
Leeds & Northrup 420 C.A.T. Controller Directions 177546 Issue 5
$20.00 USD reduced from $22.00 USD
Leeds & Northrup Centry 441 Triac Output Controller Directions 177841 Rev. G
Leeds & Northrup Centry 441 Triac Output Controller Directions 177841 Rev. G
$20.00 USD reduced from $22.00 USD
Leeds & Northrup 7083 Analyzer/Controller Operators 277553 Rev. B
Leeds & Northrup 7083 Analyzer/Controller Operators 277553 Rev. B
$20.00 USD reduced from $22.00 USD
Leeds & Northrup 7084 Microprocessor pH & Analyzer/Controller Service Manual A
Leeds & Northrup 7084 Microprocessor pH & Analyzer/Controller Service Manual A
$20.00 USD reduced from $22.00 USD
Leeds & Northrup 6430 & 6460 Series Electromax III Controllers Directions Rev J1
Leeds & Northrup 6430 & 6460 Series Electromax III Controllers Directions Rev J1
$20.00 USD reduced from $22.00 USD
Leeds & Northrup Multi-Position Electric Control Drive Mechanisms 10260-P-Y
Leeds & Northrup Multi-Position Electric Control Drive Mechanisms 10260-P-Y
$20.00 USD reduced from $22.00 USD
Leeds & Northrup Parts Catalog 179018-1975 Speedomax W Recorders & Controllers
Leeds & Northrup Parts Catalog 179018-1975 Speedomax W Recorders & Controllers
$20.00 USD reduced from $22.00 USD
Graphic Controls (Fit Leeds & Northrup Recorders) 82-44-0023-03A Blue - NEW
Graphic Controls (Fit Leeds & Northrup Recorders) 82-44-0023-03A Blue - NEW
$27.99 USD reduced from $31.00 USD
Leeds & Northrup 7081 pH Receiver / Controller pH & Conductivity Manual
Leeds & Northrup 7081 pH Receiver / Controller pH & Conductivity Manual
$29.99 USD reduced from $33.00 USD
444920 REV N1 LEEDS & NORTHRUP CONTROLER CARD SL NO 584796
444920 REV N1 LEEDS & NORTHRUP CONTROLER CARD SL NO 584796
$30.00 USD reduced from $33.00 USD
Leeds & Northrup N0231RW Bias Amplifier Control Circuit Board K023C
Leeds & Northrup N0231RW Bias Amplifier Control Circuit Board K023C
$31.67 USD reduced from $35.00 USD
Leeds Northrup Model 2402 Machine Temperature Controller (A10)
Leeds Northrup Model 2402 Machine Temperature Controller (A10)
$32.95 USD reduced from $36.00 USD
Leeds Northrup 056861, Control Panel 078152 KEYBOARD KEYPAD ,FF
Leeds Northrup 056861, Control Panel 078152 KEYBOARD KEYPAD ,FF
$35.00 USD reduced from $39.00 USD
Leeds & Northrup 101174 Amplifier Control Board
Leeds & Northrup 101174 Amplifier Control Board
$35.19 USD reduced from $39.00 USD
LEEDS & NORTHRUP 277649 REV.F OPERATOR
LEEDS & NORTHRUP 277649 REV.F OPERATOR'S MANUAL, ELECTROMAX V CONTROLLER
$37.99 USD reduced from $42.00 USD
3 Rolls Graphic Controls Leeds & Northrup 661763-T3 Roll Chart Paper
3 Rolls Graphic Controls Leeds & Northrup 661763-T3 Roll Chart Paper
$39.00 USD reduced from $43.00 USD
Leeds Northrup 019738 Three Channel Voltage Transformer PJ661M3, 8630-286-456
Leeds Northrup 019738 Three Channel Voltage Transformer PJ661M3, 8630-286-456
$40.00 USD reduced from $44.00 USD
LEEDS & NORTHRUP 277650 REV.J1 OPERATOR
LEEDS & NORTHRUP 277650 REV.J1 OPERATOR'S MANUAL, ELECTROMAX V CONTROLLER
$41.99 USD reduced from $46.00 USD
LEEDS & NORTHRUP 043075 CONTROLLER BOARD
LEEDS & NORTHRUP 043075 CONTROLLER BOARD
$44.95 USD reduced from $49.00 USD
leeds northrup potentiometer
leeds northrup potentiometer
$46.90 USD reduced from $52.00 USD
Leeds & Northrup Controller Card 444920 Rev N PCB Circuit Board
Leeds & Northrup Controller Card 444920 Rev N PCB Circuit Board
$49.95 USD reduced from $55.00 USD
Leeds Northrup 056861 Control Panel Keyboard Keypad Display Assy
Leeds Northrup 056861 Control Panel Keyboard Keypad Display Assy
$49.99 USD reduced from $55.00 USD
Leeds & Northrup Speed Control Board 193443 *No Box* New Surplus
Leeds & Northrup Speed Control Board 193443 *No Box* New Surplus
$50.00 USD reduced from $55.00 USD
LEEDS & NORTHRUP 277650 REV.J1 OPERATOR
LEEDS & NORTHRUP 277650 REV.J1 OPERATOR'S MANUAL, ELECTROMAX V CONTROLLER
$54.99 USD reduced from $60.00 USD
NEW 4973 LEEDS & NORTHRUP CONDUCTIVITY CELL 4973-1-333-20-000
NEW 4973 LEEDS & NORTHRUP CONDUCTIVITY CELL 4973-1-333-20-000
$55.00 USD reduced from $61.00 USD
LEEDS & NORTHRUP 1500 Controller Part No. 150052 (A20)
LEEDS & NORTHRUP 1500 Controller Part No. 150052 (A20)
$59.95 USD reduced from $66.00 USD
Leeds & Northrup 8008 A Circuit Board
Leeds & Northrup 8008 A Circuit Board
$61.59 USD reduced from $68.00 USD
Leeds Northrup Electromax Controller 056098
Leeds Northrup Electromax Controller 056098
$64.99 USD reduced from $71.00 USD
Leeds & Northrup 150050 Model 1500 Controller
Leeds & Northrup 150050 Model 1500 Controller
$65.00 USD reduced from $72.00 USD
LEEDS & NORTHRUP SERIES 60 CONTROL 354163
LEEDS & NORTHRUP SERIES 60 CONTROL 354163
$65.00 USD reduced from $72.00 USD
Leeds & Northrup 277650 Signal Loop Controller
Leeds & Northrup 277650 Signal Loop Controller
$67.70 USD reduced from $74.00 USD
Leeds & Northrup Controller 6432-6-4005-500-0-20 Type S with Enclosure
Leeds & Northrup Controller 6432-6-4005-500-0-20 Type S with Enclosure
$68.63 USD reduced from $75.00 USD
LEEDS & NORTHRUP,791573,LIMIT CONTROLLER
LEEDS & NORTHRUP,791573,LIMIT CONTROLLER
$70.00 USD reduced from $77.00 USD
LEEDS & NORTHRUP 150051 CONTROLLER - FREE SHIPPING
LEEDS & NORTHRUP 150051 CONTROLLER - FREE SHIPPING
$70.00 USD reduced from $77.00 USD
Leeds Northrup Temperature Controller Model# 2402 (Primary Output 4-20mA
Leeds Northrup Temperature Controller Model# 2402 (Primary Output 4-20mA
$75.00 USD reduced from $83.00 USD
Leeds & Northrup 0303136-AS VME Bus Controller, Opened
Leeds & Northrup 0303136-AS VME Bus Controller, Opened
$79.00 AUD reduced from $87.00 AUD
Leeds & Northrup 0303122-AS Network Controller, Opened
Leeds & Northrup 0303122-AS Network Controller, Opened
$79.00 AUD reduced from $87.00 AUD
Leeds & Northrup Series 80 Current Adjusting Controller
Leeds & Northrup Series 80 Current Adjusting Controller
$80.00 USD reduced from $88.00 USD
NEW LEEDS & NORTHRUP 1500 CONTROLLER 150052
NEW LEEDS & NORTHRUP 1500 CONTROLLER 150052
$80.00 USD reduced from $88.00 USD
Leeds & Northrup 030663 Rev B Control Circuit Board
Leeds & Northrup 030663 Rev B Control Circuit Board
$87.99 USD reduced from $97.00 USD
LEEDS & NORTHRUP CONTROLLER See Pics 30 Days Warranty
LEEDS & NORTHRUP CONTROLLER See Pics 30 Days Warranty
$89.00 USD reduced from $98.00 USD
Leeds Northrup 056861 Control Panel Keyboard Keypad Display Assy
Leeds Northrup 056861 Control Panel Keyboard Keypad Display Assy
$89.99 USD reduced from $99.00 USD
1 USED LEEDS & NORTHRUP 6011-3-06-1-0-00-00-000 CONTROLLER ***MAKE OFFER***
1 USED LEEDS & NORTHRUP 6011-3-06-1-0-00-00-000 CONTROLLER ***MAKE OFFER***
$99.99 USD reduced from $110.00 USD
Leeds Northrup Temperature Deviation Controller 0-2000° F Vintage As Is Untested
Leeds Northrup Temperature Deviation Controller 0-2000° F Vintage As Is Untested
$99.99 USD reduced from $110.00 USD
Vintage Leeds & Northrup 8657-C Temperature Potentiometer Untested
Vintage Leeds & Northrup 8657-C Temperature Potentiometer Untested
$100.00 USD reduced from $110.00 USD
Leeds & Northrup 6437-4-4131-100-0-20-805 Electromax Controller Enclosure Only
Leeds & Northrup 6437-4-4131-100-0-20-805 Electromax Controller Enclosure Only
$100.33 USD reduced from $110.00 USD
Leeds & Northrup Instruments - 055931 - Controller
Leeds & Northrup Instruments - 055931 - Controller
$115.50 USD reduced from $127.00 USD
1 USED LEEDS NORTHRUP 6014-3-17-1-0-00-00-110 ELECTROMAX CONTROLLER *MAKE OFFER*
1 USED LEEDS NORTHRUP 6014-3-17-1-0-00-00-110 ELECTROMAX CONTROLLER *MAKE OFFER*
$119.99 USD reduced from $132.00 USD
LEEDS & NORTHRUP,063232,ANALOG CONTROL BOARD NOS
LEEDS & NORTHRUP,063232,ANALOG CONTROL BOARD NOS
$125.00 USD reduced from $138.00 USD
LEEDS-NORTHRUP CENTURY 464 CONTROLLER TRASMITER CALIBRATION TEST
LEEDS-NORTHRUP CENTURY 464 CONTROLLER TRASMITER CALIBRATION TEST
$130.00 USD reduced from $143.00 USD
LEEDS & NORTHRUP PH ANALYZER CONTROLLER 07082-41 086311 120/240 VAC
LEEDS & NORTHRUP PH ANALYZER CONTROLLER 07082-41 086311 120/240 VAC
$149.00 USD reduced from $164.00 USD
LEEDS NORTHRUP 7084 PH ANALYZER / CONTROLLER 120/240V AC
LEEDS NORTHRUP 7084 PH ANALYZER / CONTROLLER 120/240V AC
$149.00 USD reduced from $164.00 USD
Leeds & Northrup 7083-11 PH Analyzer / Controller 120/240 V 50/60 Hz 15 VA
Leeds & Northrup 7083-11 PH Analyzer / Controller 120/240 V 50/60 Hz 15 VA
$149.99 USD reduced from $165.00 USD
Leeds & Northrup Process Controller
Leeds & Northrup Process Controller
$150.00 USD reduced from $165.00 USD
Leeds & Northrup Controller Card 444920 Rev. N *No Box* New Surplus
Leeds & Northrup Controller Card 444920 Rev. N *No Box* New Surplus
$150.00 USD reduced from $165.00 USD
Leeds & Northrup Controller Card 444920 Rev. R *No Box* New Surplus
Leeds & Northrup Controller Card 444920 Rev. R *No Box* New Surplus
$150.00 USD reduced from $165.00 USD
USED LEEDS & NORTHRUP 150051 TEMPERATURE CONTROLLER
USED LEEDS & NORTHRUP 150051 TEMPERATURE CONTROLLER
$155.00 USD reduced from $171.00 USD
LEEDS NORTHRUP CONTROLLER CIRCUIT BOARD 046304 RARE NEW $199
LEEDS NORTHRUP CONTROLLER CIRCUIT BOARD 046304 RARE NEW $199
$158.99 USD reduced from $175.00 USD
Leeds & Northrup 056355 Resistivity Controller 7082-17
Leeds & Northrup 056355 Resistivity Controller 7082-17
$159.00 USD reduced from $175.00 USD
LEEDS & NORTHRUP,022235,CONTROL CARD MODULE
LEEDS & NORTHRUP,022235,CONTROL CARD MODULE
$175.00 USD reduced from $193.00 USD
Leeds Northrup 444727 Master Controller Board Rev K
Leeds Northrup 444727 Master Controller Board Rev K
$181.93 USD reduced from $200.00 USD
New Honeywell Leeds & Northrup 074425 PLC PCB
New Honeywell Leeds & Northrup 074425 PLC PCB
$183.15 USD reduced from $201.00 USD
Leeds & Northrup pH Transmitter Analyzer Controller, 056316, 7082-11
Leeds & Northrup pH Transmitter Analyzer Controller, 056316, 7082-11
$198.00 USD reduced from $218.00 USD
LEEDS & NORTHRUP Controller 6432-4-4001-802-3-20-802 Used #31716
LEEDS & NORTHRUP Controller 6432-4-4001-802-3-20-802 Used #31716
$199.10 USD reduced from $219.00 USD
Honeywell Leeds Northrup 074419 Control Board L&N Rev C
Honeywell Leeds Northrup 074419 Control Board L&N Rev C
$205.20 USD reduced from $226.00 USD
Leeds & Northrup 150051 Temperature Controller
Leeds & Northrup 150051 Temperature Controller
$213.18 USD reduced from $234.00 USD
1 USED LEEDS & NORTHRUP 6004-007-100 ELECTROMAX CONTROLLER ***MAKE OFFER***
1 USED LEEDS & NORTHRUP 6004-007-100 ELECTROMAX CONTROLLER ***MAKE OFFER***
$229.99 USD reduced from $253.00 USD
Leeds & Northrup Series-60 C.A.T. Controller USED
Leeds & Northrup Series-60 C.A.T. Controller USED
$237.99 USD reduced from $262.00 USD
LEEDS & NORTHRUP 6012-3-03-1-0-00-00-100 ELECTROMAX TEMPERATURE CONTROLLER, 120V
LEEDS & NORTHRUP 6012-3-03-1-0-00-00-100 ELECTROMAX TEMPERATURE CONTROLLER, 120V
$278.00 USD reduced from $306.00 USD
Leeds & Northrup Series-60 Vintage Controller Speedomax H 2-901-001-0048-6-024-0
Leeds & Northrup Series-60 Vintage Controller Speedomax H 2-901-001-0048-6-024-0
$299.99 USD reduced from $330.00 USD
LEEDS & NORTHRUP 056369 DATA ANALYZER CONTROL BOARD REV. C/C1 NEW b28
LEEDS & NORTHRUP 056369 DATA ANALYZER CONTROL BOARD REV. C/C1 NEW b28
$299.99 USD reduced from $330.00 USD
Leeds & Northrup 101342 Circuit Board New NOS Burr Brown 3292 - 3/14 Controller
Leeds & Northrup 101342 Circuit Board New NOS Burr Brown 3292 - 3/14 Controller
$300.00 USD reduced from $330.00 USD
*NEW SURPLUS* Leeds & Northrup 445273 Main Control Board Rev M/M + Warranty!
*NEW SURPLUS* Leeds & Northrup 445273 Main Control Board Rev M/M + Warranty!
$300.00 USD reduced from $330.00 USD
NEW LEEDS & NORTHRUP CONTROL BOARD 074437 REVISION E
NEW LEEDS & NORTHRUP CONTROL BOARD 074437 REVISION E
$314.99 USD reduced from $346.00 USD
1 USED LEEDS NORTHRUP 6014-3-06-1-0-00-00-000 ELECTROMAX CONTROLLER *MAKE OFFER*
1 USED LEEDS NORTHRUP 6014-3-06-1-0-00-00-000 ELECTROMAX CONTROLLER *MAKE OFFER*
$319.99 USD reduced from $352.00 USD
Leeds & Northrup 074417 PC Control Board Rev CR16 Tested
Leeds & Northrup 074417 PC Control Board Rev CR16 Tested
$324.00 USD reduced from $356.00 USD
Leeds & Northrup 444727 Circuit Board L&N NOS Master Controller NEW TURBINE
Leeds & Northrup 444727 Circuit Board L&N NOS Master Controller NEW TURBINE
$330.00 USD reduced from $363.00 USD
Leeds & Northrup 074441 Converter Board Rev A2 Control Board
Leeds & Northrup 074441 Converter Board Rev A2 Control Board
$340.19 USD reduced from $374.00 USD
LEEDS & NORTHRUP 063232 CONTROL BOARD REV. B1/C3 BRAND NEW b27
LEEDS & NORTHRUP 063232 CONTROL BOARD REV. B1/C3 BRAND NEW b27
$349.99 USD reduced from $385.00 USD
Leeds Northrup Temperature Deviation Controller 0-2000° F Vintage #002A20
Leeds Northrup Temperature Deviation Controller 0-2000° F Vintage #002A20
$350.00 USD reduced from $385.00 USD
Leeds Northrup Temperature Deviation Controller 0-1500° F Vintage #001A20
Leeds Northrup Temperature Deviation Controller 0-1500° F Vintage #001A20
$350.00 USD reduced from $385.00 USD
LEEDS & NORTHRUP 043075 CONTROLLER BOARD
LEEDS & NORTHRUP 043075 CONTROLLER BOARD
$399.00 USD reduced from $439.00 USD
Leeds & Northrup Centry Current Output Controller Mod #440-1-20-31-51-A140 (NIB)
Leeds & Northrup Centry Current Output Controller Mod #440-1-20-31-51-A140 (NIB)
$425.00 USD reduced from $468.00 USD
LEEDS & NORTHRUP CO. 043075 CONTROLLER BOARD - NEW - BEX314Q - *FREE SHIPPING*
LEEDS & NORTHRUP CO. 043075 CONTROLLER BOARD - NEW - BEX314Q - *FREE SHIPPING*
$450.00 USD reduced from $495.00 USD
LEEDS & NORTHRUP 1892993 PH CONTROLLER T233793
LEEDS & NORTHRUP 1892993 PH CONTROLLER T233793
$475.20 USD reduced from $523.00 USD
Leeds Northrup 7083-10 Ph Analyzer/controller 120/240v-ac
Leeds Northrup 7083-10 Ph Analyzer/controller 120/240v-ac
$529.56 USD reduced from $583.00 USD
LEEDS & NORTHRUP 7082-11 / 708211 pH CONTROLLER 120/240V 50/60Hz 15VA 056316
LEEDS & NORTHRUP 7082-11 / 708211 pH CONTROLLER 120/240V 50/60Hz 15VA 056316
$600.00 USD reduced from $660.00 USD
Leeds Northrup 056316 PH Controller, 120/240V
Leeds Northrup 056316 PH Controller, 120/240V
$678.80 USD reduced from $747.00 USD
MDA-16-1.02 | Leeds & Northrup | PLC Module, Opened
MDA-16-1.02 | Leeds & Northrup | PLC Module, Opened
$749.00 USD reduced from $824.00 USD
Leeds & Northrup Co. 6438-6-4019-005-0-20 Electromax Controller
Leeds & Northrup Co. 6438-6-4019-005-0-20 Electromax Controller
$750.00 USD reduced from $825.00 USD
LEEDS & NORTHRUP 6017-3-03-1-O-00-00-100 ELECTROMAX CONTROLLER, TYPE J
LEEDS & NORTHRUP 6017-3-03-1-O-00-00-100 ELECTROMAX CONTROLLER, TYPE J
$1,499.99 USD reduced from $1,650.00 USD
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301 Moved Permanently

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Why Buy From Us

Here's what people say about their recent experience with us:
Brian Thompson 1 hour ago
Arrived early, Just what I ordered, Great seller
Dan Corsmeier 3 hours ago
Shipping was quick, their CS even sent the product manual via email. Impressive!
Ernie Toth 4 hours ago
Excellent item and transaction. Many thanks! ARIGATO!
Ken Pobihushchyj 5 hours ago
Great seller to deal with, smooth easy transaction A++
Karleen Carlson 5 hours ago
Rec'd As Described - Another Great Transaction With A Super Seller !!
John Semrad 7 hours ago
item as described, packed well and shipped promptly
Tool Enterprises 7 hours ago
Excellent Transaction,Product Just As Seller Advertised, Fast Shipping.
Raymond V Seifert 7 hours ago
A+ Fast Shipping
Bryan Ruggles 10 hours ago
Just as described. Quick Shipment. Very Clean.
Jim Obluda 13 hours ago
Great seller a+++++Thanks For everything.

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