Model 204B-FS - 3 3/4 Digit Process Meter with BCD Output

3 3/4 DIGIT PROCESS METER WITH BCD OUTPUT
MODEL 204B-FS - OPTION AVG/RMS

1/8 DIN (1A) Case

Connections Diagram

STANDARD FEATURES
Parallel BCD output
±5,999-count display span
Voltage ranges from ±0.6 V to ±60 V
Current ranges ±1.0 mA to ±100 mA
1500 Vp CMV, 120 dB CMR
Bright, 0.56 in (14.2 mm) LED display
Front-panel zero and span fine adjust
1/8 DIN case
115/230 Vac power

OPTIONS
Isolated, stored, three-state parallel BCD
IEEE-488 (GPIB) interface
Digital setpoint controller
Digital peak or valley hold
0.5 mV/count analog output
5 V dc, 9-32 V dc or 26-56 Vdc power
Screw-terminal barrier strip
NEMA-4 splash-proof lens cover
NEMA-size case

BCD OUTPUT STANDARD
Non-isolated parallel BCD output is a standard feature of the 204B-FS and is implemented on the main circuit board. This output is good for about 1 ft and allows the 204B-FS to be interfaced to a digital comparator (Model 872A) or a printer (Model 820A). Additional data and control outputs can be provided by an optional upper board.

OPTIONS
Upper-board options include four BCD output boards, an IEEE-488 (GPIB) communications interface, linearized 0.5 mV/count analog output, and a single-setpoint controller. Optical isolation between analog and digital grounds is available as an option to isolate all communication and control-output signals from the input signals.

Mechanical options for the standard 1/8 DIN case include a screw-terminal barrier strip for power and signal and a splash-proof lens cover which meets NEMA-4 requirements. A NEMA-size case is optional. For additional information, please refer to the Options and Mechanical sections.

SPECIFICATIONS

ANALOG INPUT

VOLTAGE RECEIVER	Most-sensitive scaling	Least-sensitive scaling
Signal Range	±1.2 V	±350 V
Display Range	±5,999 counts	±5,999 counts
Resolution	50 µV/count	5 mV/count
Input resistance	1.0 Mohm	1.0 Mohm
Bias current	100 pA	100 pA
Maximum input	350 Vp	350 Vp

CURRENT RECEIVER	Most-sensitive scaling	Least-sensitive scaling
Signal Range	±1.0 mA	±1000 mA
Display Range	±5,999 counts	±5,999 counts
Resolution	500 nA/count	25µA/count
Input resistance	600 ohm	10 ohm
Voltage drop, max	±0.6 V	±0.6 V
Signal power, max	0.125 W	0.125 W

VOLTAGE & CURRENT RECEIVER
Coarse-span adjustment: Internal attenuator (voltage) or shunt (current)
Fine-span adjustment: Front-panel accessible potentiometer
Coarse-zero adjustment: Internal resistor divider
Fine-zero adjustment: Front-panel accessible potentiometer
Input configuration: Single-ended

NOISE REJECTION
NMR, SIG HI to SIG GND: 40 dB, 50/60 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
Maximum error: ±0.02% of reading ±1 count
Span tempco: ±0.01% of reading/°C
Zero drift, max: ±0.01% of reading/°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: 1 hour

ANALOG-TO-DIGITAL CONVERSION
Technique: Dual-slope, average value
Polarity: Automatic
Signal integration period: 50 ms at 60 Hz, 40 ms at 50 Hz
Read rate: 3.6/s at full scale

DISPLAY
Type: 7-segment, red LED
Height: 0.56 in (14.2 mm)
Symbols: 8.8.8.8
Decimal points: Three positions internally or at connector
Overrange indication: Display flashes

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

POWER
AC voltages: 115 V ac ±10% at 60 Hz; 230 V ac ±10% at 50 Hz
DC voltages: 5 V dc ±5%, non-isolated; 9-32 V dc, isolated to 300 Vp; 26-56 V dc, isolated to 300 Vp
Power consumption: 5 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 standard, Newport NEMA-size case optional (see Mechanical section for drawings)
Weight: 17 oz (480 g)
Case material: 94V-0 UL-rated polycarbonate