DPM 342 LASCAR, DPM 342 Datasheet - Page 2

• Manufacturer Part Number: DPM 342
• Description: Loop Powered Meter
• Manufacturer: LASCAR

Specifications of DPM 342

• No. Of Digits / Alpha: 4
• Meter Function: DC Voltmeter
• Meter Range: 4mA To 20mA
• Digit Height: 11mm
• Operating Temperature Range: 0°C To +50°C
• Meter Signal Input: Current
• Character Size: 0.43"
• Meter Output: Current
• Lead Free Status / RoHS Status: na

TERMINAL FUNCTIONS
CALIBRATION
The meter is supplied calibrated to read 000 for 4mA loop current and 1000 for 20mA. C
has a very wide adjustment range . Place the jumper link across LK1. This disables the offset adjustment to enable span adjustment to be made first.
After span adjustment is complete, the jumper link is removed and the offset adjustment is made. The jumper link is then used to display one of the
decimal points if necessary.
Example to re-calibrate: Meter to read -40.0 for 4mA and 150.0 for 20mA.
SAFETY
The user must ensure that the incorporation of the DPM into the user’s equipment conforms to the relevant sections of BS EN 61010 (Safety Requirements for
Electrical Equipment for Measuring, Control and Laboratory Use). No inputs other than 4-20mA indicating loop current should be made.
Specifications liable to change without prior warning
1. + Positive current input.
2.
JUMPER LINKS:
required Decimal Point, the meter has several on-board jumper links.
PANEL FITTING
1. Calculate the span by subtracting the desired reading at 4mA from the desired reading at 20mA: -1500 - (-400) = 1900
2. Short jumper link Lk1 with the link header normally used to select the desired Decimal Point.
3. Apply 16mA between the + and - screw terminals.
4. Adjust the CAL potentiometer so the DPM 342 indicates 1900.
5. Remove jumper link Lk1 and place it back on the desired Decimal Point (DP1 in this case).
6. Apply 4mA between
7. Adjust the OFF potentiometer so the DPM 342 indicates the desired reading at 4mA: -40.0
8. Adjust CAL and OFF as necessary for optimum accuracy, by repeating steps 2 to 7.
DP2
-
Link Lk1 is located above the screw terminals.
Negative current input.
DP3
DP1
TEL: [phone] FAX: [phone]
the - and + screw terminals.
Locate the meter by passing it through the front of the panel cut-out and gently push until the rear of the bezel is flush with
the panel (DO NOT PUSH ON THE LCD). The snap-in lugs will now automatically hold the meter firmly in position. Take
care when inserting the meter, not to damage the current loop wires and not to short them on the panel.
DP2
In order to quickly and easily select the
MODULE HOUSE, WHITEPARISH,
LASCAR ELECTRONICS LTD.
E-MAIL: [e-mail]
DP3
DP1
WILTSHIRE SP5 2SJ UK
DP2
DP3
DP1
DPM 342
TEL: [phone] FAX: [phone]
E-MAIL: [e-mail]
LASCAR ELECTRONICS INC.
4258 WEST 12th STREET,
ERIE, PA 16505 USA
Issue 5
CURRENT LOOP CONNECTION:
its backlighting are powered from the 4-20mA signal loop and need no
other power supply. Ensure correct polarity when connecting.
alibration is carried out in two simple stages
Connecting the DPM 342 to a 4-20mA Current Loop.
April/2008
Transmitter
4-20mA
HOW MING STREET, KWUN TONG, KOWLOON, HONG KONG
S.C.
I-
I+
UNIT NOS. 6-8, 19/F FUTURA PLAZA, 111-113 -
LASCAR ELECTRONICS (HK) LIMITED
TEL: [phone] FAX: [phone]
E-MAIL:[e-mail]
+
-
Applies to DPM 342/1
DPM 342
because the DPM 342
The DPM 342 and