Michele Ceramic MWW12A000002 Guía de usuario descargar pdf (Pagina 43)

100

Humidity and Dew-Point Instruments

Precision Manufacturing

WM281

Electrical Connections

Pin Pin

1 Power Supply V + 8 Output Channel 2 Ground

2 Power Supply V - 9 RS485 Data +

3 Output RS485 Ground 10 RS485 Data -

4 Ground 11 Not connected

5 Output Channel 1 Temperature + 12 Not connected

6 Output Channel 1 Ground 13 Output Channel 3 (not connected)

7 Output Channel 2 RH + 14 Output Channel 3 Ground (not connected)

Do not connect pin 2 (V -) to pin 4 (Ground)

Ordering Codes

To construct the order code, select the relevant feature from the tables below, starting with the base model, which is {Feature A} and then add on options to create a

string: {Feature A}+{Feature B}+{Feature C}+{Feature D}+{Feature E}

Order example:

WM281+A+K7+N030+P070

Digital RH and temperature transmitter WM281, 4-20 mA output, delrin cap slotted with stainless steel mesh ﬁ lter, temp range -30 to +70ºC (-22 to +158°F)

WM281 A K7 N030 P070

Temperature Low {Feature D}

0°C (+32°F) 0000

-20°C (-4°F) N020

-30°C (-22°F) N030

Base Model {Feature A}

Digital RH and temperature transmitter WM281

Temperature High {Feature E}

+20°C (+68°F) P020

+30°C (+86°F)) P030

+50°C (+122°F) P050

+70°C (+158°F) P070

Other output scaling available on

request

XXXX

Signal Output {Feature B}

4–20 mA A

0–10 V B

0–5 V C

0–1 V D

0-20 mA E

Filter {Feature C}

SS sintered ﬁ lter H2

SS sintered ﬁ lter with teﬂ on coating J2

Delrin cap slotted, with SS mesh ﬁ lter K7

Delrin cap slotted, with PTFE ﬁ lter,

white

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