Partlow MRC 7800 Specifications

Recorders

Data Sheet

Flow Controller

DESCRIPTION

The MRC 7800 Flow Controller is a microprocessor
based circular chart recorder capable of measuring,
displaying, recording and totaling flow process
variables. Record functions, alarm settings and other
parameters are easily configured from the front
mounted keypad and self-prompting displays.

All user data can be protected from unauthorized
changes by the Enable Mode security system. The
MRC7800 is protected against loss of data from AC
power failures by a standard battery backup system.

Applications for the MRC 7800 include process
validation, trend analysis, regulatory compliance and
product safety. Flow tracking is available with the

MRC 7800

™

Proven Recording Reliability
Designed Specifically for Flow
Applications!

APPLICATIONS:

• Process Validation, Trend Analysis, Regulatory

Compliance, Product Safety

• Flow/Rate Tracking with optional totalizing capability

INDUSTRIES

Harsh water environments, sewage treatment, effluent
flow, water treatment, etc.

FEATURES/BENEFITS

• Micro-based recording controller

• Two displays, allowing you to see critical process

values at the same time

• Easy, straightforward programming—allows you to

configure your recorder with a logical step-by-step
process using a simple keypad

• High reliability—eliminates cost of process

downtime

• Up to 8 relay or solid state outputs for use as

totalizer presets

• Up to 4 analog outputs for process retransmission

optional totalizing capability.

www.partlow.com • www.danaherindustrialcontrols.com

Process Automation Worldwide Brands: LFETM • PartlowTM • PMATM • RustrakTM • West

Customer Service +1 800.390.6405

Technical Support +1 800.866.6659

TM

Recorders

Hollowshaft, Incremental EncodersFlow Controller

SPECIFICATIONS

STANDARD FEATURES

Modes: Digital; choice of Record or Diverse

Record/Totalizer combination functions.

Display: One 4-digit display (std.); second

display optional; 0.56˝ high, red, seven
segment LED; 3 button keypad; automatic and
decimal point positioning; Decimal Positions:
None, one, two or three decimal places.

Status Indicators: 7 LED status indicators: Out 1,

2; one green LED pen 2 indicator; LED
indicators ALRM1 and ALRM2.

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; 5 year minimum life.
Construction/Enclosure: Injection molded Noryl

case; acrylic window cover.

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.
Electro Static Discharge: No effect from 5000V

static charge over the entire area.

ELECTRICAL

Power Consumption: 25VA max.
Line Voltage: 115V or 230VAC ±10%, 50–60Hz.

MRC 7800

Proven Recording Reliability
Designed Specifically for Flow
Applications!

OUTPUTS

Relay: SPST/SPDT; 115VAC 5.0A Resistive,

1/8HP, 250VA; 230VAC 2.5A Resistive, 1/8HP,
250VA.

SSR Driver: Open collector output; short

circuit protected @ 100mA max; provides
4VDC @ 20mA or 3VDC @ 40mA.

Current: 0–20mA or 4–20mA; 0–650 ohm

maximum load.

Process Alarm: Direct (High) or Reverse (Low);

0 to 9999 units.

Deviation Alarm: N/A.
Deviation Band Alarm: N/A.
Alarm Hysteresis: 0–300 units (width of

hysteresis band).

PERFORMANCE

GENERAL:
Input Measurement Error: mA, mV, and VDC

±0.25% of scaled span or better typically;
±1 least significant digit @ 25°C.

Ambient Temperature Error: 0.01% of span per

degree C deviation from 25°C.

Isolation: N/A.
Chart Accuracy: ±1% of chart span.
Noise Rejection: Common Mode: 90dB

minimum; 24VAC maximum for RTD input;
115VAC max for other inputs. Normal Mode:
85dB minimum @ 60Hz or greater.

Transmitter Power Supply: Provides up to

42mA of current at 24 VDC.

COMMUNICATIONS INTERFACES

Communications Port: N/A
Protocol: N/A
Bit Rate: N/A
Address: N/A

™

PHYSICAL DIMENSIONS

Width: 15.13˝ (384mm).
Depth: 3.63˝ (92mm).
Height: 13.19˝ (335mm).
Weight: 20 lbs (9.1kg).
Mounting/Mounting Position: Panel or wall.

OPTIONS/ACCESSORIES

24V DC power supply option.
115 or 230VAC input option.
Door lock and sealed conduit/connector option.
NEMA 3 protection optional.
Totalizing flow option.

WARRANTY

3 years.

INPUTS

Thermocouple: N/A.
RTD: N/A.
Volts: 0–5 VDC*; 1–5 VDC*.
DC Milliamps: 4–20mA , 0–20mADC.
DC Millivolts*: 0–100mV (can be scaled to any

portion of this range).

* Accompanied by removal of a shunt resistor

factory installed on the input terminals.

RATINGS/AGENCY APPROVALS

Safety: UL 1092 File E67237; CSA Spec C22.2

File LR39885, CE EN61010-1 1993/1995.

Immunity: CE EN50082-1:1992
Emissions: CE EN55011:1991
Limit Device: N/A
Other: ISO 9002 registered.

PROTECTION

NEMA 3 optional

www.partlow.com • www.danaherindustrialcontrols.com

Process Automation Worldwide Brands: LFETM • PartlowTM • PMATM • RustrakTM • West

Customer Service +1 800.390.6405

Technical Support +1 800.866.6659

TM

Flow

7 Two Pen

w/ Totalization

2 Two SPST

4 Four SPST

2 Two

4 Four

2 Two

Standard

/Isolated

Recorder

6 One Pen Rec.

1 One SPST

1 One

1 One

Standard

1 24VDC

Regulated

1 Data Logged

in Memory**

* Total quantity of SPST Relays and SSR Drivers must be less than or equal to eight.

When SPDT Relays are included, the total must be less than or equal to six.

**Available only on units with totalization.

*** This option comes with a structural foam cover.

8 Two Pen Rec.

9 One Pen

Recorder

w/ Totalization

Recorder with

Totalization

and second

display

6 Six SPST

7 One SPDT

8 Two SPDT

9 Two SPDT

and

Two SPST

6 Six

8 Eight

3 Three

4 Four

Standard

Standard

Shunt Resistor, P/N 64411702

Resistor, P/N 64411701 (provided with the unit) or the 10-50mA input and a 2.5 ohm

NOTE: 4-20mA inputs are accommodated using the 1-5V input and a 250 ohm Shunt

†N3 - NEMA type protection for wet environments.

MRC7800

5 One Pen

Recorder

0 None

0 None

0 None

0 None

0 None

78

Code 1:

Model

Code 2:

Pen & Totalization

Selrction

Code 3:

Relay (SPST)

Outputs*

Code 4:

SSR Driver

Outputs*

Code 5:

4-20mA

Outputs

Code 6:

Transmitter

Power Supply

Code 7:

Data Logging

Options

MODELS

Flow Controller

7 4 & 6

Combined

***

6 Sealed

Conduit

Connections

4 115VAC

5 115/230VAC

4 Door Lock

***

2 Standard

Cover

Windows)

(Plastic

1 115VAC

2 115/230VAC

CSA APPROVED

BLANK - None

N3 NEMA †

Required

0

Zeros

0

MRC 7800

Proven Recording Reliability

Designed Specifically for Flow

Applications!

Code 8:

Enclosure

Options

Code 9:

Operating

Voltage

™

Code 10:

Option

Suffix

Recorders

Recorders

Hollowshaft, Incremental EncodersFlow Controller

DIMENSIONS

EC1

15.1"

(384.2 mm)

WIDTH OF COVER

MRC 7800

™

Proven Recording Reliability
Designed Specifically for Flow
Applications!

2.5"

(63.5 mm)

(65.9 mm)

2.6"

9

DIA.(7.1mm)

32

12.6"

(320.7 mm) (190.5 mm)

7.5"

13.9"

13.5"

( 354 mm)

(342.5 mm)

Made in USA.
* Specifications subject to change without notice in accordance with

Panel cut-out for flush mounting

Headquarters: 1675 Delany Road • Gurnee, IL 60031-1282 • USA
Phone: [phone] • Fax: [phone]

Satellite Locations:
North America: North Carolina, South Carolina, Connecticut, Massachusetts, New York,

Canada, British Virgin Islands • Europe: United Kingdom, Italy, France, Germany, Spain,
Slovakia • Latin America: Brazil • Asia: China, Japan, Korea, Singapore

www.partlow.com • www.danaherindustrialcontrols.com

Process Automation Worldwide Brands: LFETM • PartlowTM • PMATM • RustrakTM • West

our DBS policy of continuous improvement. All product and brand
names are trademarks of their respective companies. All rights
reserved.

Partlow™ brand and MRC 7800™ are trademarks of Danaher Industrial
Controls Group. All rights reserved.

© 2005 DICG Corp.
Partlow Brand MRC 7800 Data Sheet (5/05)

Customer Service:

Tel.: [phone]
Fax: [phone]
[e-mail]

TM

Technical Support:

Tel.: [phone]
Fax: [phone]
[e-mail]