DPM742-BL Martel Electronics, DPM742-BL Datasheet - Page 4
![PANEL METER LCD 4-20MA W/BK LITE](/photos/6/49/64908/dpm742-bl_sml.jpg)
DPM742-BL
Manufacturer Part Number
DPM742-BL
Description
PANEL METER LCD 4-20MA W/BK LITE
Manufacturer
Martel Electronics
Series
700r
Type
Process Meter (4-20mA Loop)r
Datasheet
1.DPM742-BL.pdf
(4 pages)
Specifications of DPM742-BL
Measuring Range
4-20mA Loop
Display Type
LCD
Display Face Size
1.84" L x 0.70" W (46.7 x 17.8mm)
Display Digits
3.5
Display Digits - Height
0.500" (12.70mm)
Mounting Type
Panel Mount
Termination
Terminal Block
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Voltage - Supply
-
Backlight
-
Display Style
-
Other names
227-1056
DPM 742-BL
Specifications liable to change without prior warning
JUMPER LINKS
DP1
DP2
DP3
Lk1
APPLICATIONS
The DPM 750-BL is powered from the 4-20mA signal loop and needs no other power supply. The LED backlighting requires a
separate d.c. power supply. Ensure correct polarity when connecting.
Measuring a 4-20mA loop current with LED
Backlighting switched on.
Note:
If the backlighting supply voltage (V+ - 0V) = 5V,
then no resistor R is required, and connect BL- to 0V.
Transmitter
Measuring a 4-20mA loop current.
Transmitter
4-20mA
4-20mA
Displays decimal point DP1 (199.9).
Displays decimal point DP2 (19.99).
Displays decimal point DP3 (1.999).
Used during calibration (see above).
I+
I-
I+
I-
I+
I-
I+
I-
DPM 742-BL
DPM 742-BL
BL+
BL-
www.lascarelectronics.com
PO Box 770, Londonderry, NH 03053 1-800-821-0023
www.martelcorp.com
S
R
BL
V+
0V
DPM 742-BL
R =
V+ - 5V
30mA
4-20mA Loop Powered Indicator with Backlighting
DP 3 2 1
Transmitter
4-20mA
Issue 1
DP 3 2 1
Measuring a 4-20mA loop current
with other devices in the loop.
August/2002
I+
I-
DP 3 2 1
Device
Device
Other
Other
1
2
M.C.
Applies to DPM 742-BL/1
I+
I-
DPM 742-BL
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