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The Q2000/9000-S is a meter/controller for use with
pressure transducers and load cells which require
bridge excitation and preamplification of microvolt
signals. Deadload and tare adjustments make it
suitable for weighing applications. Like process meters,
it provides zero and span adjustments for direct
readout in engineering units. It can also be used as a
microvoltmeter with differential input. A universal
1/8 DIN case houses each meter. Choose any
combination of display type (LED or LCD), operating
power, input type and range, analog output, and digital or
control outputs.
Excitation Supply and Preamplifier
The Q2000/9000-S provides a constant-voltage
excitation supply, which is adjustable from 1 to 10V and
can drive up to 30 mA. It also provides a high-impedance
preamplifier, which is continuously adjustable so that
signal levels from ±2.0 to ±500 mV can produce the
full-scale display of ±1999 or ±9999 counts. At 10V
excitation and maximum gain, full-scale readout can be
obtained with strain-gauge sensitivity as low as
0.20 mV/V. An active filter is provided for noise reduction.
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 for Q2000-S is one part in ±1999 counts,
or 0.05% of full scale. Resolution for Q9000-S is one
part in ±9999 counts, or 0.01% of full scale. Accuracy
is 99.9% 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.
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Load Cells
available from NEWPORT®
CLICK HERE FOR SELECTION GUIDE
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SPECIFICATIONS
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ANALOG INPUT |
Q2000S Most-sensitive Scaling |
Q9000S Most-sensitive Scaling | Q2000S Least-sensitive Scaling |
Q9000S Least-sensitive Scaling |
Range |
±2.0 mV |
±2.0 mV |
±500 mV |
±500 mV |
Resolution |
1.0 µV/count |
0.2 µV/count |
250 µV/count |
50 µV/count |
Preamplifier Gain |
405 |
405 |
4.01 |
4.01 |
Post-amplifier Gain |
2.47 |
2.47 |
1.00 |
1.00 |
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Gain Adjustment: Seven overlapping ranges with fine adjustment
Input Configuration: Differential, ratiometric
Zero Adjustment: ±225 ĀµV/volt of excitation
Span Adjustment: 1 to 2.47 of preamp gain
Bias Current: 11 nA typ, 22 nA max
Noise Rejection
CMR, SIG GND to SIG LO: 80 dB, DC to 60 Hz
CMV, SIG GND to SIG LO: ±1 V, DC to 60 Hz
CMR, SIG GND to PWR GND: 120 dB
CMV, SIG GND to PWR GND: 1500 Vp per HV test, 354 Vp per IEC spacing
Accuracy at 25°C
Error, Maximum ±0.05% of reading ±1 count (Q2); ±0.05% of reading ±2 counts (Q9)
Span Tempco: ±0.01% of reading/°C
Zero Drift, Maximum: ±0.3 ĀµV/°C
Offset Drift, Maximum: ±(0.01% offset V ±0.01% FS V)/°C
Step Response: 1 s to 99.9% of span
Warmup to Rated Accuracy: 30 min (Q2); 60 min (Q9)
Excitation
Configuration: Constant-voltage
Voltage Sense: Internal or remote
Voltage Range: Adjustable from 1 to 10V
Load Current, Maximum: 30 mA
Conversion
Technique: Auto-zero, dual slope, average value
Signal Integration Period: 100 ms, nominal
Reading Rate: 2.5/s, nominal
Display
LED: Red, 14.2 mm (0.56"), 7-segment
LCD: 12.7 mm (0.50"), 7-segment
Power
AC Models: 120, 240 or 24 Vac +10%/- 15%, 49 to 440 Hz
DC Models: 9 to 32 Vdc, isolated to 300 Vp; 26 to 56 Vdc, isolated to 300 Vp; 5 Vdc ±5%, nonisolated
Common Mode
Rejection: 120 dB
Environmental
Operating Temperature: 0 to 60°C (32 to 140°F)
Storage Temperature: -40 to 85°C (-40 to 185°F)
Humidity: 95% RH, non-condensing @ 40°C (104°F)
Mechanical
Bezel: 96 W x 48 H x 8 mm D (3.78 x 1.89 x 0.31")
Depth Behind Bezel: 139.8 mm (5.50")
Panel Cutout: 92 W x 45 mm H (3.62 x 1.77")
Weight: 17 oz (480 g)
Case Material: 94V-0 UL-rated polycarbonate
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† All dollar amounts on this site are shown in US currency.
Ordering Example: (1) Q2000-S 3 1/2 digit strain gage meter, red LED, 120 Vac power, 1 mV/count = $360
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Part Number Builder |
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Option Descriptions
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(1)
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Display Resolution and Case Style
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Select
2 for ± 1,999 counts (3 1/2 digits)
9 for ± 9,999 counts (4 digits)
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(2)
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Display Type & Meter Power
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Select
0 for LED, 120 Vac (49/440 Hz) (BQ20 or BQ90)
1 for LCD, 120 Vac (49/440 Hz) (BQ21)
2 for LED, 240 Vac (49/440 Hz) (BQ22 or BQ92)
3 for LCD, 240 Vac (49/440 Hz) (BQ23)
4 for LED, 9-32 Vdc (isolated) (BQ24 or BQ94)
5 for LCD, 9-32 Vdc (isolated) (BQ25)
6 for LED, 5 Vdc** (BQ26 or BQ96)
7 for LCD, 5 Vdc** (BQ27)
8 for LED, 24 Vac (BQ28 or BQ98)
9 for LCD, 24 Vac (BQ29)
A for LED, 26-56 Vdc (isolated) (BQ2A or BQ9A)
B for LCD, 26-56 Vdc (isolated) (BQ2B)
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(3)
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Analog Output Adders
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Select
0 for 0 for 1 mV/count (Q2000) or 0.2 mV (Q9000) (supplied on all units)
1 for 0-5 Vdc, non-isolated (BA01)
2 for 0-10 Vdc, non-isolated (BA01)
3 for 0-1 mA, source or sink, non-isolated (BA01)
4 for 4-20 mA, source or sink, non-isolated (BA01)
5 for 4-20 mA, sink (high-compliance), non-isolated. (BA02)
6 for 4-20 mA, ISOLATED (BA03)
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(4)
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Control Output Adders
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Select
0 for None
1 for Dual-setpoint 10 A relay. (BDT1)
2 for Proportional 4-20 mA control, source or sink (BDP1)
3 for Time-proportional solid-state 2 A relay plus proportional 4-20 mA control, source or sink. (BDP2)
4 for BCD (isolated, latched, buffered, byte addressable). Includes 50-pin mass-termination connector. (BDD2)
5 for Single-setpoint 10 A relay (BDS1)
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(5)
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Signal Conditioning Input Adders
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Select
S for Strain-gage/microvolt input plus excitation
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(6)
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Display Color
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Select
Nothing(leave field blank) for Red Display (standard)
,G for Green Display
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(7)
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Lens
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Select
Nothing(leave field blank) for Standard Lens (with Newport logo)
,BL for Blank Lens
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| NOTE: All combinations may not be valid, check spec sheet for valid part numbers. |
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Keywords: 3 1/2 Digit Strain / Microvoltmeter Indicator/ Controller, 4 Digit, Voltage meter, micro volt meter
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