Lascar DPM 942-FPSI Data Sheet
DPM 942-FPSI
4-20mA Loop Meter with
ORDERING INFORMATION
Programmable Backlighting
FEATURES
• 19mm (0.75”) digit height
• Dual colour backlight with programmable status indication
• Open collector outputs that mirror the backlight status (with
inverted output option)
• 5V supply voltage
• 4–20mA measurement range
The DPM 942-FPSI is a 3 ½ digit LCD current loop meter that can also be used for dual colour go-stop status indication. This
functionality is ideal for simplifying monitoring applications, where an operator needs to know the status of the equipment at a glance.
During standard operation the backlight is green, however if the reading goes beyond the user programmable thresholds, the display will
turn red. Three open collector outputs are included, that indicate high, ok and low conditions. Both the backlight colour and outputs can
be inverted.
Standard Instrument
(panel meter, xing
kit, data sheet)
DPM 942-FPSI
Module setup is a simple operation using an eight-way DIP switch and two push buttons. No special tools or equipment are required.
SPECIFICATIONS
Accuracy (overall error)
Linearity
Sample rate
Hysteresis (high and low thresholds)
Operating temperature range
Temperature stability
Supply voltage
Supply current (not including backlight)
Backlight voltage
Backlight current
Minimum
0 (32)
4.5
Typical
0.05
3
2
100
5
1
5
Maximum
0.1
±1
50 (122)
5.5
40
Unit
% (±1 count)
count
samples/second
counts
°C (°F)
ppm/°C
V
mA
V
mA
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Specications liable to change without prior warning Issue 3 04/11 S.L Applies to DPM 942-FPSI Page 1 of 5
DPM 942-FPSI
4-20mA Loop Meter with Programmable Backlighting
PIN FUNCTIONS
1. I- Negative current loop input
2. I+ Positive current loop input
3. V- Negative supply connection
4. V+ Positive supply connection
5. LP+ Positive backlight connection
6. ALM HI Open collector alarm output. Goes low when the high threshold of the module has been passed.
7. ALM OK Open collector alarm output. Goes low when the module is measuring a signal between the high and low thresholds.
8. ALM LO Open collector alarm output. Goes low when the lower threshold of the module has been passed.
9. SW- Negative switch input for ashing backlight acknowledgement.
10. SW+ Positive switch input for ashing backlight acknowledgement.
LCD SYMBOLS
‘Err’ Return dip switches 1 to 5 to the off position. Only 1 of theses switches may be in the on position at a time.
! The unit is in set-up mode. To view the measured signal, ensure switches 1 to 5 are in the off position.
DIMENSIONS
All dimensions in mm (inches)
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Specications liable to change without prior warning Issue 3 11/10 S.L Applies to DPM 942-FPSI Page 2 of 5
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