Partlow MRC 8000 Data Sheet
Recorders
Data Sheet
12 Inch 1 & 2 Pen Recorder/Controller
DESCRIPTION
The MRC 8000 incorporates numerous refinements
over its 10˝ MRC 7000™ sibling, including a larger 12
inch recording area; an advanced platen assembly
which eliminates slide wire feedback for improved
reliability; as well as the incorporation of optional
isolated 4–20mA outputs to provide the highest
resolution and accuracy available in a recorder of
this type.
The MRC 8000 is offered in two versions: a basic
recorder and a recording controller. Both may be
specified as either single pen or dual pen units. Each
version is capable of measuring, recording and
displaying temperature, pressure, level, flow and
other process variables. The MRC 8000 includes
isolated universal inputs and a list of optional capabilities including: transmitter power supply, 5A relay
outputs, auxiliary inputs for remote setpoints, RS-485
MRC 8000
™
Rugged, Reliable and Refined
12 Inch Diameter Recording for
Larger Recording Areas!
APPLICATIONS:
• Process Validation
• Trend Analysis
• Regulatory Compliance
• Product Safety:
- Temperature
- Pressure
- pH Level
- Flow
INDUSTRIES
Oven, chamber, furnaces, heat treating, food
processing, harsh water environments
FEATURES/BENEFITS
• 12˝ Micro-based recording controller with remote
setpoint capability
• Two large displays—allow you to see critical
process values at the same time on 2 pen models
• Easy, straightforward programming—allows you to
configure your recorder with a logical step-by-step
process using a simple keypad
• High resolution of recorder process variables for
better record accuracy
• Reliability—maintenance free recording for years
to come
communications, door lock and NEMA 4X enclosure.
Recorders
Hollowshaft, Incremental Encoders12 Inch 1 & 2 Pen Recorder/Controller
SPECIFICATIONS
STANDARD FEATURES
Modes: Digital; record or controller functional-
ity.
Display: Two 4-digit digital displays: 0.56˝ high,
red, seven segment LED; 3 button keypad;
automatic and decimal point positioning.
Status Indicators: Red LEDs for ALRM1/ALRM2
(Recorders); yellow, red LEDs MAN, OUT1/
OUT2, ALRM.
Chart: 10˝ circular chart; 100 charts furnished
with each instrument. Unless otherwise
specified, charts shipped with instrument are
0–100 range. 24 hour rotation default setting.
Chart Drive: DC Stepper Motor.
Chart Rotation: User configurable from 0.1 and
999.9 hours per revolution.
Chart Range: Bottom and top of span –9999 to
9999 units.
Pen Type: One or two disposable fiber tip pen.
Pen Color: Pen 1 (red); Pen 2 (green).
Memory Backup: Battery backed SRAM; 5 year
minimum life.
Construction/Enclosure: Gasketed cover, case
and windows. Structural foam case and cover
with plastic or glass window area.
OPERATING CHARACTERISTICS
Operating Temp: 32° to 122°F (0° to 50°C).
Storage Temp: –40° to 149°F (–40° to 65°C).
Humidity: 0% to 90% non-condensing R.H.
Vibration: 0.5 to 100Hz @ 0.2g.
ELECTRICAL
Power Consumption: 25VA max.
Line Voltage: 115V or 230VAC ±10%, 50–60Hz.
INPUTS
Thermocouple: J, K, T, R, S, E, B, N, C.
RTD: 100 ohm, platinum; 0.00385 ohms/ohm/°C
RTD Excitation Current: 330 microamps, typical.
DC Voltage: 0–25mV, 0–50mV, 10–50mV, 0–5V, 1–
5V.
DC Current: 4–20mA or 0–20mA used with
appropriate external shunt resistor.
Remote Setpoint Input: 0–5VDC, 1–5VDC, 4–
20mA, or 0–20mA with shunt resistor.
OUTPUTS
CONTROL OUTPUTS:
ON/OFF: Assignable to alarm and control
outputs.
Relay: SPDT; 115VAC 5.0A resistive, 1/8HP,
230VAC, 230VAC 2.5A resistive, 1/8HP,
250VA.
SSR Driver: Open collector output; short
circuit protected @ 100mA max; provides
4VDC @ 20mA or 3VDC @ 40mA.
Current: Assignable to process value or
setpoint transmission or control outputs; 0–
20mA or 4–20mA nominal output span; 650
ohm
ALARM/EVENT OUTPUTS (Options):
Number: Up to two process alarms for each of
two inputs. Type: Process high/low
(recorder); process, deviation and band
(controller).
Relay: SPDT: 115VAC 5.0A resistive, 1/8HP,
230VAC; 230VAC 2.5A resistive, 1/8HP,
250VA.
SSR Driver: Open collector output; short
circuit protected @ 100mA max; provides
4VDC @ 20mA or 3VDC @ 40mA.
Process Alarm: Direct (High) or Reverse (Low)
–9999 to 9999 units.
Deviation Alarm: Direct (deviation above
setpoint) or Reverse (deviation below
setpoint) –3000 to 3000 units.
Deviation Band Alarm: Open or closed 1 to
3000 units.
Alarm Hysteresis: 0–300 units.
PERFORMANCE
GENERAL:
Input Measurement Error: Type J, K, T, E, N, C,
T/C and RTD ±0.25% of reading plus 1 degree
@ 25°C; Type R, S, B, C, T/C
Ambient Temperature Error: 0.04% of span per
degree C deviation from 25°C.
Cold Junction Compensation Error: ±0.2% @
25°C.
Cold Junction Compensation Rejection: 0.04%
deviation from 25°C.
Linearization Error: TCs: ±0.25°C typical;
±0.5°C worst case with exceptions; RTDs:
±0.1°C typical; ±0.3°C worst case.
MRC 8000
™
Rugged, Reliable and Refined
12 Inch Diameter Recording for Larger
Recording Areas!
Noise Rejection: Common Mode Rejection: 90dB
minimum; 24VAC maximum for RTD input;
115VAC max for other inputs; Normal Mode
Rejection: 85dB minimum @ 60Hz or greater.
Isolation: N/A.
Chart Accuracy: Recording: 0.5% of span.
Chart Rotation: ±0.5% or rotation time..
Chart Accuracy: Recording: 0.5% of span.
Chart Rotation: ±0.5% or rotation time.
Resolution: 0.15% of chart span.
Dead Band: 0.3% of chart span.
Process Value Output Error Limit: N/A.
Record Error Limit: N/A.
CONTROL PARAMETERS:
Proportional Band Output 1/Output 2: 1 to 3000
units.
Manual Reset (Integral): –1500 to 1500 units.
Auto Reset (Integral): 0–100 repeats/minute.
Rate Derivative: 0–10 minutes.
Cycle Time Output 1/Output 2: 1–240 seconds.
Position Proportioning Sensitivity: 0.0–50.0%.
ON/OFF Hysteresis: 0–300 units (width of
hysteresis band).
First /Second Output Position: –1000 to 1000
units.
Control Action: Direct or reverse.
Automatic Transfer Function: User-selectable to
transfer from manual to automatic control
when setpoint is reached; can be disabled.
Anti-Reset Windup: Auto-reset is disabled when
the process is outside of the proportional
band.
Auto/Manual: Bumpless transfer.
Manual Output: 0–100%.
Output Limiting: High/Low 0–100%.
Setpoint Limiting: High/Low limit: –9999 to 9999
units.
PROCESS
CONTROL
U
L
®
LISTED
88BO
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