Manual
6 ■ User’s Manual Watlow Series 142
(1817)
To order, complete the code number
to the right with the information below: 1 4 2 A - _ _ _ _ - _ _ 0 0
Series 142 = Temperature safety limit,
limit, latching 3A relay, environmentally sealed
controller, or basic on-off temperature controller
Output Type
A = Electromechanical relay
1
, Form C, 3A, with RC
suppression on on-off temperature controller, without
contact suppression on limit controller
Set Point
2 = Remote/Adjustable
2
3 = Fixed (See below for available factory-fixed set points)
Input (Thermocouple)
ANSI Type E
669 = 230°F (110°C) 679 = 365°F (185°C) 682 = 575°F (302°C)
685 = 265°F (129°C) 684 = 450°F (232°C) 664 = 1050°F (566°C)
670 = 302°F (150°C) 675 = 500°F (260°C)
668 = 311°F (155°C) 678 = 565°F (296°C)
Ordering Information
1
Electromechanical relays war-
ranted for 100,000 closures
only.
2
User selectable range. Consult
factory for details. Setpot
required, sold separately.
3
A.G.A. Certified
4
Not within calibration toler-
ance range per ANSI circular
MC96.1.
Note: User documentation may
be available in French, German,
Spanish, Italian, and Dutch, as
well as English. Check Watlow’s
website (www.watlow.com/) for
availability. Specify language at
time of order.
ANSI Type J
706 = 32 to 600°F
(0 to 315°C)
626 = 50°F (10°C)
718 = 61°F (16°C)
653 = 115°F (46°C)
666 = 145°F (63°C)
686 = 149°F (65°C)
609
3
= 155°F (68°C)
681 = 175°F (79°C)
672 = 185°F (85°C)
600
3
= 200°F (93°C)
688 = 215°F (102°C)
601
3
= 225°F (107°C)
719 = 230°F (110°C)
602
3
= 250°F (121°C)
715 = 265°F (129°C)
603
3
= 275°F (135°C)
604
3
= 300°F (149°C)
605
3
= 325°F (163°C)
606
3
= 350°F (177°C)
707 = 360°F (182°C)
607
3
= 375°F (191°C)
608
3
= 400°F (204°C)
699
3
= 425°F (218°C)
689 = 444°F (229°C)
704 = 465°F (240°C)
698
3
= 450°F (232°C)
612
3
= 475°F (246°C)
613
3
= 500°F (260°C)
614 = 525°F (274°C)
615 = 550°F (288°C)
616 = 575°F (302°C)
617 = 600°F (316°C)
618 = 625°F (329°C)
693 = 650°F (343°C)
620 = 675°F (357°C)
621 = 700°F (371°C)
622 = 725°F (385°C)
623 = 750°F (399°C)
624 = 775°F (413°C)
625 = 800°F (427°C)
627 = 850°F (454°C)
628 = 875°F (468°C)
696 = 900°F (482°C)
630 = 925°F (496°C)
631 = 950°F (510°C)
632 = 975°F (524°C)
633 = 1000°F (538°C)
ANSI Type K
716 = 122°F (50°C)
711 = 125°F (52°C)
125 = 257°F (125°C)
619 = 300°F (149°C)
667 = 460°F (238°C)
671 = 550°F (288°C)
695 = 572°F (300°C)
690 = 600°F (315°C)
674 = 700°F (700°C)
677 = 788°F (420°C)
629 = 800°F (427°C)
691 = 875°F (468°C)
634 = 1050°F (565°C)
635 = 1100°F (593°C)
636 = 1150°F (621°C)
673 = 1198°F (648°C)
637 = 1200°F (649°C)
638 = 1250°F (677°C)
639 = 1300°F (704°C)
640 = 1350°F (732°C)
687 = 1382°F (750°C)
717 = 750°F (399°C)
641 = 1400°F (760°C)
642 = 1450°F (788°C)
643 = 1500°F (816°C)
644 = 1550°F (843°C)
645 = 1600°F (871°C)
646 = 1650°F (899°C)
647 = 1700°F (927°C)
648 = 1750°F (954°C)
649 = 1800°F (982°C)
650 = 1850°F (1010°C)
651 = 1900°F (1038°C)
652 = 1950°F (1066°C)
692 = 2000°F (1093°C)
654 = 2050°F (1121°C)
655 = 2100°F (1149°C)
656 = 2150°F (1177°C)
657 = 2200°F (1204°C)
658 = 2250°F (1232°C)
659 = 2300°F (1260°C)
660 = 2350°F (1288°C)
661
4
= 2400°F (1316°C)
662
4
= 2450°F (1343°C)
663
4
= 2500°F (1371°C)
ANSI Type T
708 = -4°F (-20°C)
705 = -328 to 662°F (-200 to 350°C)
680 = 140°F (60°C)
714 = 175°F (79°C)
694 = 275°F (135°C)
712 = 347°F (175°C)
713 = 392°F (200°C)
710 = 482°F (250°C)
Line Voltage/Power
1 = 120V~
2 = 208/240V~
Control Operation
2 = Limit Control—Manual reset on power loss and overtemperature
3 = Limit Control—Auto reset on power loss/manual reset on overtemperature
4 = Temperature Control—on-off










