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4 1/2 Digit Strain Meters with BCD Output
2003B-LA1 & 2003B-LP1

4 1/2 Digit Strain Meters with BCD Output
­5,000 to +19,999-count display span
True-differential preamplifier
Isolated 5, 10, 15 Vdc excitation supply
2 Hz low-pass active filter, LA1 version
Peak-hold with external reset, LP1 version
1500 Vp CMV, 120 dB CMR
Parallel BCD output
0.1 mV/count analog output
Bright, 0.56 in (14.2 mm) LED display
115/230 V ac power
1/8 DIN case

OPTIONS
NEMA-4 splash-proof lens cover






Models 2003B-LA1 and 2003B-LP1
are high-resolution, high-accuracy 4 1/2 digit panel meters for use with pressure transducers, load cells and other bridge transducers which require excitation and preamplification of microvolt signals.

Model 2003B-LA1 provides an extra 2 Hz two-pole active filter for exceptional normal mode noise rejection (NMR) of 110 dB.

Model 2003B-LP1 provides an analog peak-hold circuit with external reset. It is ideal for destructive testing applications.

EXCITATION SUPPLY AND PREAMPLIFIER
The 2003B-LA1 and 2003B-LP1 provide an isolated, constant-voltage excitation supply which can be field-configured for 5, 10 or 15 V dc output. They also provide a high-impedance, true-differential preamplifier, which is continuously adjustable from 20 to 100 in 3% steps to accommodate load-cell sensitivities of 1 mV/V to 20 mV/V. Fine-gain and fine-deadload adjustments are easily accessible behind the lens. A push-to-cal switch is provided through the lens. The calibration shunt resistor is customer-supplied.

BRIDGE CONNECTION
Bridges can be connected by 4 or 6 wires. In 6-wire connection, two lines sense the voltage applied to the bridge and compensate for lead resistance.

RESOLUTION AND ACCURACY
Resolution is one part in 19,999 counts, or 0.005% of full scale. Accuracy is up to 99.98%. of reading. The measurement is ratiometric to reduce errors due to temperature and power-line variations. The same internal reference controls the meter gain and the excitation level.

SIGNAL OUTPUTS
Standard outputs include non-isolated parallel BCD and a strip-chart recorder output of 1 mV/count (nominal).

OPTIONS
Options include board-edge connectors and a splash-proof lens cover which meets NEMA-4 requirements. For additional information, please refer to the Options and Mechanical sections.
Load Cells
OMEGADYNE™ Load Cells
available from
NEWPORT®
CLICK HERE FOR SELECTION GUIDE

SPECIFICATIONS
ANALOG INPUT
Most-sensitive scaling
Least-sensitive scaling
Signal Range
­0.5 to +2 mV
­2.5 to +10 mV
Display Range
­5000 to +19,999
­5000 to +19,999
Resolution
1 µV/count
5 µV/count
Preamplifier Gain
100
20

Input configuration: Differential, ratiometric
Coarse-span adjustment: 57 overlapping ranges with fine adjustment
Fine-span adjustment: ±3% of span
Zero adjustment: ±3% of bridge output
Deadload adjustment, max: Up to 60% of bridge output with external resistor
Tare adjustment: ±4 counts nominal
Bias current: 11 nA typ, 22 nA max

EXCITATION
Configuration: Constant-voltage
Voltage sense: Internal or remote
Voltage settings: Jumper-selectable 5, 10, 15 Vdc
Load current, max: 125 mA at 5 V, 115 mA at 10 V, 67 mA at 15 V


NOISE REJECTION
NMR, SIG HI to SIG LO, LA1 option: 110 dB, 50/60 Hz
NMR, SIG HI to SIG LO, LP1 option: 80 dB, 50/60 Hz
CMR, SIG GND to SIG LO: 80 dB, DC to 60 Hz
CMR, SIG GND to PWR GND: 120 dB, 50/60 Hz
CMV, SIG GND to PWR GND: 1500 Vp test, 354 Vp per IEC spacing

ACCURACY AT 25°C
Error, max:
±0.01% of reading ±2 counts
Zero tempco: ±0.3 µV/°C
Span tempco: ±0.005% of reading/°C
Step response: 1 s to 99.9% of span
Warmup to rated accuracy: 60 min

CONVERSION
Technique: Dual-slope, average-value
Signal integration period: 33 ms at 60 Hz, 40 ms at 50 Hz
Read rate: 4.3/s at 60 Hz, 3.6/s at 50 Hz

DISPLAY
Type: 7-segment, red LED
Height: 0.56 in (14.2 mm)
Symbols: ­1.8.8.8.8
Decimal points: Four positions programmable internally or at connector
Overrange indication: Display flashes

DIGITAL SIGNALS
Output signals: TTL-compatible
HOLD input: TTL or 5 V CMOS compatible
BLANKING input: Open-collector compatible

POWER
AC voltages:
115 Vac ±10% at 60 Hz; 230 Vac ±10% at 50 Hz
Power consumption: 8 W (nominal)

ENVIRONMENTAL
Operating temperature:
0 to 50°C
Storage temperature: ­40 to +75°C
Relative humidity: 95% at 40°C (non-condensing)

MECHANICAL
Dimensions: Newport DIN1A (1/8 DIN) case (see Mechanical section for drawings)
Weight: 23 oz (650 g)
Case material: 94V-0 UL-rated polycarbonate



Product Selection (Specify Model Number)
 Part Number   Availability   Price    Description   
 2003B-LA1 in-stock    $640.00     4 1/2 digit strain meter with excitation and 2 Hz two-pole active filter for exceptional normal mode noise rejection (NMR) of 110  
 2003B-LP1 in-stock    $660.00     4 1/2 digit strain meter with excitation and analog peak-hold circuit with external reset  
 
All dollar amounts on this site are shown in US currency.


   
Keywords: 4 1/2 Digit Strain Meters with BCD Output

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