Q2000S 3 1/2 Digit Strain/Microvoltmeter, Transmitter & Controller

4-DIGIT STRAIN/MICROVOLTMETER, TRANSMITTER & CONTROLLER
QUANTS Q9000S

1/8 DIN (1A) Case

Connections Diagram

OPTIONS
Analog output for user-selected span
Single-setpoint 10 A relay control
Dual-setpoint 10 A relay control
Proportional 4-20 mA control
Time-proportional 2 A SS relay control
Parallel, isolated BCD output
NEMA-4 splash-proof lens cover

QUANTA STANDARD FEATURES
Adjustable 1-10 Vdc bridge excitation supply
±1,999-count display span
Seven overlapping gain ranges
Front-panel accessible zero and span adjustments
Resolution down to 0.2 µV/count
Strain-gauge sensitivity down to 0.20 mV/V
Ratiometric measurement
0.2 mV/count analog output
Bright, 0.56 in (14.2 mm) LED display
Automatic polarity
Display hold and test
120/240 Vac, 5 Vdc, 9-32 Vdc or 26-56 Vdc power
Screw-terminal barrier strip
1/8 DIN case

The QUANTA 9000S is a 4-digit 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 ideal 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.

EXCITATION SUPPLY AND PREAMPLIFIER
The Q9000S provides a constant-voltage excitation supply, which is adjustable from 1 to 10 V 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 ±9,999 counts. At 10 V 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 con-nection, two lines sense the voltage applied to the bridge and compensate for lead resistance (these two sense lines require the optional PCB connector D1).

RESOLUTION AND ACCURACY
Resolution is one part in ±9,999 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.

POWER OPTIONS
Six types of meter power are available: 120 Vac, 240 Vac, 24 Vac, 5 Vdc, isolated 9-32 Vdc, or isolated 26-56 Vdc.

ANALOG OUTPUT OPTIONS
A 0.2 mV/count (±2 V full-scale) analog output is standard and is useful for driving a strip-chart recorder. An additional analog output can be provided by an optional vertical plug-in board. Available output signals are 0-5 Vdc, 0-10 Vdc, 0-1 mA (source or sink), and 4-20 mA (source or sink). The top and bottom of each output range can be scaled to fit a user-selected display span.

Additional outputs can be provided by a horizontal upper board. Available options include single-setpoint control with one 10 A relay, dual-setpoint control with two 10 A relays, 4-20 mA proportional control (source or sink), time-proportional 2 A solid-state relay control, and isolated, parallel BCD output. For additional information, please refer to the QUANTA, Options, and Mechanical sections.

SPECIFICATIONS

ANALOG INPUT	Most-sensitive scaling	Least-sensitive scaling
Range	±2.0 mV	±500 mV
Resolution	0.2 µV/count	50 µV/count
Preamplifier gain	405	4.01
Post-amplifier gain	2.47	1.00

Gain adjustment: Seven overlapping ranges with fine adjustment
Input configuration: Differential, ratiometric
Zero adjustment: ±225 µV/volt of excitation
Span adjustment: 1 to 2.47 of preamp gain
Bias current: 11 nA typ, 22 nA max

NOISE REJECTION
NMR, SIG HI to SIG LO: 150 dB, 50/60 Hz
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, max: ±0.05% of reading ±2 counts
Span tempco: ±0.01% of reading/°C
Zero drift, max: ±0.3 µV/°C
Offset drift, max: ±(0.01% offset V ±0.01% FS V)/°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: 100 ms
Read rate: 2.5/s

EXCITATION
Configuration: Constant-voltage
Voltage sense: Internal or remote
Voltage range: Adjustable from 1 to 10 V
Load current, max: 30 mA

DISPLAY TYPE
Type: 7-segment, red
Height: 0.56 in (14.2 mm)
Symbols: 8.8.8.8
Decimal point positions: Three positions selectable by jumpers behind lens or at connector
0 to ±9,999 counts: Normal operation
±10,000 to ±19,999 counts: Four least-significant digits flash reading
Beyond ±19,999 counts: All four digits flash zeros
Overrange indication: Three least-significant digits blanked

POWER
AC voltages: 120, 240 or 24 Vac +10%/15%
AC frequency: 49-440 Hz
DC voltages: 9-32 Vdc, isolated to 300 Vp; 26-56 Vdc, isolated to 300 Vp; 5 Vdc ±5%, non-isolated
Power consumption: 5 W max

ENVIRONMENTAL
Operating temperature: 0 to 60°C
Storage temperature: 40 to +85°C
Relative humidity: 95% at 40°C (non-condensing)

MECHANICAL
Dimensions: Newport DIN1A (1/8 DIN) case (see Mechanical section for drawings)
Weight: 17 oz (480 g)
Case material: 94V-0 UL-rated polycarbonate