DPM742-BL Martel Electronics, DPM742-BL Datasheet - Page 4

• 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

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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