Model Q2000O - 3 1/2 Digit Ohmmeter, Transmitter & Controller

3 1/2 DIGIT OHMMETER, TRANSMITTER & CONTROLLER
MODEL Q2000O

1/8 DIN (1A) Case

Connections Diagram

QUANTA STANDARD FEATURES
1,999-count display span
19.99 ohm to 19.99 kohm ranges
Front-panel accessible zero and span adjust
1 mV/count analog output
LED or LCD display
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

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

DISPLAY AND POWER OPTIONS
The QUANTA Model Q2000O is available with an LED or an LCD display and with six types of meter power: 120 Vac, 240 Vac, 24 Vac, 5 Vdc, 9-32 Vdc (isolated) and 26-56 Vdc (isolated).

ANALOG OUTPUT OPTIONS
A 1 mV/count (±2 V full-scale) analog output is standard and is ideal 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.

CONTROL OUTPUT OPTIONS
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. The 10A relay options are ideal for ATE and material testing applications, which require ON/OFF control. The BCD output can communicate with programmable controllers and Newport's Model 872A thumbwheel controller. For additional information, please refer to the QUANTA and Mechanical sections.

SPECIFICATIONS

INPUT

Range	19.99 ohm	199.9 Kohm	1.999 Kohm	19.99 Kohm
Resolution	10 mohm	100 mohm	1 ohm	10 ohm
Excitation Current	4.2 mA	4.2 mA	420 µA	42 µA

INPUT CONFIGURATION
Connection: 2- or 4-wire
Zero adjustment: ±50 counts
Overvoltage protection (differential): 15 Vp
Open-circuit voltage (max): 12 V

NOISE REJECTION
NMR: 50 dB, 50/60 Hz
CMR: 120 dB
CMV: 1500 Vp per HV test, 354 Vp per IEC spacing

ACCURACY AT 25°C
Overall accuracy: ±0.05% of reading ±1 count
Span tempco: ±0.006% of reading/°C
Zero tempco: ±2.5 m/°C ±0.001% of FS/°C
Warmup to rated accuracy: 1 min

ANALOG-TO-DIGITAL CONVERSION
Input configuration: Differential, bipolar
Technique: Dual-slope, average-value
Polarity: Automatic
Signal integration period: 100 ms
Read rate: 2.5/s

DISPLAY
LED: 0.56 in (14.2 mm) 7-segment, red
LCD: 0.50 in (12.7 mm) 7-segment liquid crystal
Symbols: 1.8.8.8
Decimal-point positions: Three positions selectable by jumpers behind lens or at connector
Overrange or break indication: Three least-significant digits blanked

POWER
AC voltages: 120, 240, 100 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
DC 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: 94 V-0 UL-rated polycarbonate