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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 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 056861 KEYBOARD CONTROL PANEL 678
LEEDS NORTHRUP 056861 KEYBOARD CONTROL PANEL 678
$15.00 USD reduced from $17.00 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 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 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 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 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 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 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
Leeds & Northrup Max1 Distributed Control Service Manual 277212 Rev A
Leeds & Northrup Max1 Distributed Control Service Manual 277212 Rev A
$24.99 USD reduced from $27.00 USD
L&N LEEDS & NORTHRUP PC CONTROL CIRCUIT BOARD CARD 046315 NAPC-2 NAPC2 8401
L&N LEEDS & NORTHRUP PC CONTROL CIRCUIT BOARD CARD 046315 NAPC-2 NAPC2 8401
$25.00 USD reduced from $28.00 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
USED Leeds & Northrup 051792 Control Board Rev. B/B
USED Leeds & Northrup 051792 Control Board Rev. B/B
$32.50 USD reduced from $36.00 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 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
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 Series 80 Current Adjusting Controller with 320 day warranty!!
Leeds & Northrup Series 80 Current Adjusting Controller with 320 day warranty!!
$65.99 USD reduced from $73.00 USD
Leeds & Northrup 277650 Signal Loop Controller
Leeds & Northrup 277650 Signal Loop Controller
$69.44 USD reduced from $76.00 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 Series 80 Current Adjusting Controller
Leeds & Northrup Series 80 Current Adjusting Controller
$72.00 USD reduced from $79.00 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 Control Station Model A 423-21-11-205
Leeds & Northrup Control Station Model A 423-21-11-205
$78.00 USD reduced from $86.00 USD
Leeds & Northrup Control Station Model A Cat. No. 423-21-10-MAX-S
Leeds & Northrup Control Station Model A Cat. No. 423-21-10-MAX-S
$78.00 USD reduced from $86.00 USD
Leeds & Northrup Control Station Model A Cat. No. 423-21-10
Leeds & Northrup Control Station Model A Cat. No. 423-21-10
$78.00 USD reduced from $86.00 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
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
LEEDS & NORTHRUP ELECTROMAX SINGLE LOOP CONTROLLER 6012-3-03-1-7-00-00-100 (E6)
LEEDS & NORTHRUP ELECTROMAX SINGLE LOOP CONTROLLER 6012-3-03-1-7-00-00-100 (E6)
$90.00 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
LEEDS & NORTHRUP,063232,ANALOG CONTROL BOARD
LEEDS & NORTHRUP,063232,ANALOG CONTROL BOARD
$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
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 CENTURY 464 CONTROLLER TRASMITER CALIBRATION TEST
LEEDS-NORTHRUP CENTURY 464 CONTROLLER TRASMITER CALIBRATION TEST
$130.00 USD reduced from $143.00 USD
Leeds & Northrup Instruments - 055931 - Controller
Leeds & Northrup Instruments - 055931 - Controller
$137.50 USD reduced from $151.00 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 Process Controller
Leeds & Northrup Process Controller
$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 CSS-001137 Control Panel Unit
Leeds northrup CSS-001137 Control Panel Unit
$164.99 USD reduced from $181.00 USD
LEEDS & NORTHRUP,022235,CONTROL CARD MODULE
LEEDS & NORTHRUP,022235,CONTROL CARD MODULE
$175.00 USD reduced from $193.00 USD
LEEDS & NORTHRUP 074431 USED CONTROL BOARD 074431
LEEDS & NORTHRUP 074431 USED CONTROL BOARD 074431
$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
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
LEEDS-NORTHRUP CENTURY 464 CONTROLLER TRASMITER CALIBRATION TEST
LEEDS-NORTHRUP CENTURY 464 CONTROLLER TRASMITER CALIBRATION TEST
$200.00 USD reduced from $220.00 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
NEW LEEDS & NORTHRUP CONTROL BOARD 078691
NEW LEEDS & NORTHRUP CONTROL BOARD 078691
$269.99 USD reduced from $297.00 USD
Leeds & Northrup 10173-1-B-0060 Type K 0-800 Deg F
Leeds & Northrup 10173-1-B-0060 Type K 0-800 Deg F
$274.99 USD reduced from $302.00 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 C.A.T. Controller USED
Leeds & Northrup Series-60 C.A.T. Controller USED
$279.99 USD reduced from $308.00 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 Honeywell Leeds Northrup 005791 Control Board Alarm Card Rev G/G
NEW Honeywell Leeds Northrup 005791 Control Board Alarm Card Rev G/G
$300.00 USD reduced from $330.00 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 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
NEW LEEDS & NORTHRUP 043075 CONTROLLER BOARD
NEW LEEDS & NORTHRUP 043075 CONTROLLER BOARD
$600.00 USD reduced from $660.00 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
Nos Surplus LEEDS & NORTHRUP 6011321173000100 ELECTROMAX CONTROLLER
Nos Surplus LEEDS & NORTHRUP 6011321173000100 ELECTROMAX CONTROLLER
$1,999.99 USD reduced from $2,200.00 USD
301 Moved Permanently

301 Moved Permanently

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Why Buy From Us

Here's what people say about their recent experience with us:
M.S. Aerospace 1 hour ago
Item as described and fast shipping!!
Yury Karyuk 3 hours ago
Great Buy!!! Very Good A++++ Seller!!!
Edgar Vanags 5 hours ago
Quick delivery, Thank you!
Gwendolyn Y. Price 5 hours ago
AAA++++ FAST DELIVERY****WOULD BUY AGAIN
ricardo gonzalez 8 hours ago
Item arrived on time and exactly as described.
Oriol Delgado 11 hours ago
Just as described. Quick Shipment. Very Clean.
Amazing Electric Motors Ltd 13 hours ago
Thank you for an easy and pleasant transaction. AAA+++
Eric C. Wilson 15 hours ago
Great Transaction!!! Excellent Communication!!!! A+++
Jon Tiefenthaler 15 hours ago
item as described, packed well and shipped promptly
Dalia Buss 16 hours ago
Looks to be in great condition. trustworthy seller

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