3. Wait until “A” disappears, and then removes the short wire, and set “Loc” to 0 or 1.
4. Now, the instrument comes back to normal measurement display mode, and the setting
of parameter “Sc” is finished.
The unit of Sc is 1/20000 of the scare of the corresponding RTD. At 0
℃
, the total resistance
of the two lead wire of Pt100 or 0~400ohm should be less than 4ohm, and that of Cu50
should be less than 2ohm. Otherwise, wire resistant compensation will not function. The
smaller the resistance of the lead wire, can provide more accurate measurement.
4.
DIN rail mounted type
DIN mounted type (dimension E5) has no display window. It can input analog signals or
input/output on-off signals for host computer or PLC, and it can also work as a two-channel
programmable re-transmitter.
E5 dimension instrument has one LED indication light. When the instrument is
communicating with the host computer, the light flashes with light on time different to light off
time. When the instrument hasn’t received signal from the host computer for 6 seconds, the
indication light should flash with the same light on time and light off time.
It means:
z
That the on-off period is as long as 1.6 second means no communication and no alarm (it
can be treated as normal);
z
The light flashing with period 0.6 second means no communication and general error
occurs.
z
The light quickly flashing with period 0.3 second means no communication and severe
error such as input over range occurs.
z
The light keeping off means the instrument power off or damaged; the light keep on
(longer than 8 seconds) means the instrument power on but damaged.
The parameters of E5 dimension instrument can be set by connecting external display to the
1394 socket.
Note: The 1394 socket of the instrument only supports Yudian external display.
The instrument can be connect PC or PLC to monitoring or capture the data. We can provide
the FREE protocol for user or order our monitoring software-AIDCS. Please contact Yudian
Sales Dept. for more detail.
5. Dry Bulb, Wet Bulb Humidity Measurement
By connecting 2 units of 3 wires PT100 for input, is can become the dry bulb, wet bulb
humidity measurement.
1. Install J0 module(RTD input module) in M1 and M2 slot. Set Sn1=22, Sn2=42.
2. Atmospheric pressure and wind speed defined by parameter “Po” and “SPEd”
3. Tuning humidity first with the bulb wrapped in wet muslin, after the reading stabled
4. Adjust parameter Sc2 to make the reading reach 100%,
5. Can remove the wet muslin after the adjustment.
6. Set parameter dIP1=1, dIP2=0, resolution will 0.1
℃
and 1%RH
