DPM742-BL Martel Electronics, DPM742-BL Datasheet

PANEL METER LCD 4-20MA W/BK LITE

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
PRODUCT DESCRIPTION
The DPM 742-BL gives an accurate, zero adjusted indication of a 4-20mA current. Calibration is by two multi-turn
potentiometers which allow sensitive adjustment of the instrument over a very wide range. Decimal points are jumper
link selectable.
backlighting ensures excellent readability under low light conditions. Connection is via screw terminals. The module's
low cost means it will suit high and low volume applications. This module is supplied with a plastic mounting bezel. A
waterproof seal to IP67 / NEMA 4X is achievable, using the optional BEZ 700-IP metal bezel.
FEATURES
ELECTRICAL SPECIFICATIONS
LASCAR ELECTRONICS LTD.
MODULE HOUSE
WHITEPARISH
WILTSHIRE
UK
TEL: +44 (1794) 884567
FAX: +44 (1794) 884616
E-mail: sales@lascar.co.uk
*** This specification linearly derates to 30mA @ 50°C.
• 12.7
• 4-20mA Loop Powered Indication
• Low Volt Drop
•
•
• Bandgap Reference
• Wide Adjustment Range
• Auto-polarity on Display
• IP67 / NEMA 4X Protection via BEZ 700-IP
Specification
Accuracy (overall error) *
Linearity
Sample rate
Operating temperature range
Temperature stability
Loop Volt Drop
Supply current
Backlight supply voltage
Backlight supply current @ 5V d.c.
Full scale reading (@20mA)
Offset adjustment range
** An external series resistor is required above 5V, see Applications.
* To ensure maximum accuracy, re-calibrate periodically.
Programmable Decimal Points
LED Backlighting (30mA @ 5V typ.)
mm (0.5") Digit Height
SP5 2SJ
A low drift bandgap reference circuit ensures accurate readings over a wide temperature range.
www.lascarelectronics.com
PO Box 770, Londonderry, NH 03053 1-800-821-0023
www.martelcorp.com
LASCAR ELECTRONICS INC.
3750 West 26th Street
Erie
PA 16506
USA
TEL: +1 (814) 835 0621
FAX: +1 (814) 838 8141
E-mail: us-sales@lascarelectronics.com
ORDERING INFORMATION
4-20mA Loop Powered Indicator with Backlighting
-1900
Standard Meter
IP67 / NEMA 4X Bezel
Min.
0.05
4.75
0
5
4
0
Typ.
200
2.5
5.6
5.0
30
+1900
50***
Max.
1999
0.1
±1
50
20
**
LASCAR ELECTRONICS (HK) LIMITED
FLAT C, 5/FL., LUCKY FTY. BLDG.
63-65 HUNG TO ROAD
KWUN TONG
HONG KONG
TEL: +852 2797 3219
FAX: +852 2343 6187
E-mail: b4lascar@samsongroup.com.hk
% (±1 count)
samples/sec
ppm/°C
Stock Number
DPM 742-BL
BEZ 700-IP
V d.c.
Count
Count
count
Unit
mA
mA
°C
V
KOWLOON
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LED

DPM742-BL Summary of contents

Page 1

DPM 742-BL PRODUCT DESCRIPTION The DPM 742-BL gives an accurate, zero adjusted indication of a 4-20mA current. Calibration is by two multi-turn potentiometers which allow sensitive adjustment of the instrument over a very wide range. Decimal points are jumper link ...

Page 2

DPM 742-BL DIMENSIONS All dimensions in mm (inches) Panel thickness: 1.0 - 3.0 (0.04 - 0.12) Panel cut-out: 62.0 - 32.0 (2.44 - 1.26) PANEL FITTING Insulating Washer 1 FUNCTIONAL BLOCK DIAGRAM I+ 4-20mA Vdc I- 1 4-20mA Loop Powered ...

Page 3

DPM 742-BL CIRCUIT DIAGRAM SCREW TERMINAL FUNCTIONS I+ Positive current input. I- Negative current input. BL+ Positive power supply connection to the LED backlighting. BL- Negative power supply connection to the LED backlighting. CALIBRATION The meter is supplied calibrated to ...

Page 4

DPM 742-BL JUMPER LINKS DP1 Displays decimal point DP1 (199.9). DP2 Displays decimal point DP2 (19.99). DP3 Displays decimal point DP3 (1.999). Lk1 Used during calibration (see above). APPLICATIONS The DPM 750-BL is powered from the 4-20mA signal loop and ...