Dräger Polytron 7000 Instructions For Use Manual page 21

Transmitter without relay or pump module (2-wire):
Minimum Number of trans-
supply voltage
20 V
24 V
28 V
Transmitter with relay module (3-wire):
Minimum Number of trans-
supply voltage
20 V
24 V
28 V
0.5 mm
mitters
265 pF/m
1 1042 m
2 1007 m
3 972 m
4 585 m
4 936 m
5 901 m
6 865 m
7 830 m
8 794 m
9 390 m
9 758 m
10 722 m
11 687 m
12 651 m
13 616 m
14 334 m
15 78 m
Maximum cable length with a load resistance of not more than 500 Ω
0.5 mm
mitters
265 pF/m
1 287 m
2 144 m
3 96 m
4 72 m
1 386 m
2 193 m
3 129 m
4 96 m
1 429 m
2 215 m
3 143 m
4 107 m
Maximum cable length with a load resistance of 250 Ω
2 2
0.75 mm
320 pF/m
921 m
890 m
860 m
829 m
829 m
799 m
768 m
737 m
707 m
585 m
676 m
645 m
614 m
584 m
553 m
502 m
117 m
2 2
0.75 mm
320 pF/m
431 m
216 m
144 m
108 m
579 m
289 m
193 m
145 m
644 m
322 m
215 m
161 m
Electrical connections
2
1.5 mm 2.5 mm
375 pF/m 400 pF/m
828 m 792 m
801 m 766 m
774 m 740 m
747 m 714 m
747 m 714 m
720 m 689 m
693 m 663 m
666 m 637 m
639 m 611 m
612 m 586 m
612 m 586 m
584 m 560 m
557 m 534 m
530 m 508 m
503 m 482 m
476 m 456 m
234 m 390 m
2
1.5 mm 2.5 mm
375 pF/m 400 pF/m
828 m 792 m
431 m 718 m
287 m 479 m
216 m 359 m
828 m 792 m
579 m 766 m
386 m 643 m
289 m 482 m
828 m 792 m
644 m 766 m
429 m 715 m
322 m 537 m
2
2
21