Product guide

Humidity and Dew-Point Instruments
© Michell Instruments 2009-2011
52
Precision Manufacturing
DT284
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:
DT284+A+11+N030+P140
Digital RH and temperature transmitter DT284, 4-20 mA output, stainless steel probe 250mm (9.84”), stainless steel cover and sintered fi lter, temp range -30 to +140ºC
(-22 to +284ºF)
DT284 A 11 N030 P140
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 DT284
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
Other output scaling available on request XXXX
Probe Type {Feature C}
SS probe 250mm (9.84"), SS cover & mesh fi lter 3
SS probe 500mm (19.69"), SS cover & mesh fi lter 10
SS probe 250mm (9.84"), SS cover & sinter fi lter 11
SS probe 500mm (19.69"), SS cover & sinter fi lter 12
PEEK probe 250mm (9.84") & cover, SS mesh fi lter 13
PEEK probe 500mm (19.69") & cover, SS mesh fi lter 14