Product guide

Humidity and Dew-Point Instruments
© Michell Instruments 2009-2011
54
Precision Manufacturing
WR283
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:
WR283+A+7+N030+P180
Digital RH and temperature transmitter WR283 with 4-20 mA output, stainless steel probe with 2m + 2m extension (6.56’ + 6.56’) cable and stainless steel sintered fi lter,
temp range -30 to +180ºC (-22 to +356ºF)
WR283 A 7 N030 P180
Signal Output {Feature B}
4–20 mA A
0–10 V B
0–5 V C
0–1 V D
0–20 mA E
Temp 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 WR283
Temp High {Feature E}
+20°C (+68°F) P020
+30°C (+86°F) P030
+50°C (+122°F) P050
+70°C (+158°F) P070
+100°C (+212°F) P100
+140°C (+284°F) P140
+150°C (+302°F) P150
+180°C (+356°F) P180
+200°C (+392°F) P200
Other output scaling available on request XXXX
Probe Type {Feature C}
SS probe, cover & mesh fi lter, 2m (6.56') cable 2
SS probe, cover & mesh fi lter, 2m + 2m
extension (6.56’ + 6.56’) cable
5
SS probe, cover & sinter fi lter, 2m (6.56') cable 6
SS probe, cover & sinter fi lter, 2m + 2m
extension (6.56’ + 6.56’) cable
7
PEEK probe, cover, SS mesh fi lter, 2m (6.56') cable 8
PEEK probe, cover, SS mesh fi lter, 2m + 2m
extension (6.56’ + 6.56’) cable
9