Table of Contents
Advertisement
Quick Links
MMRT
Bulletin SS09040 Issue/Rev. 0.2 (10/14)
Smith Meter
Totalizer / Rate Meter
®
The MMRT is a combination explosion-proof totalizer and
rate meter. The unit has two eight-digit totalizers, one being
an accumulated non-resettable totalizer and the other being
an eight-digit resettable batch totalizer. The non-resettable
totalizer can be toggled from the totalizer to the rate meter
via a reed switch activated by a magnet located within the
explosion-proof housing. The MMRT has a programmable
scaler and decimal point which allows the displaying of
totals and rate in any engineering terms.
The MMRT can be used with a variety of meters,
including:
• PRIME 4 meters
• PD meters with transmitters
• Turbine meters
• Mass meters
Features
• Eight-digit non-resettable totalizer
• Eight-digit resettable totalizer
• Flow rate indicator (on demand)
• Explosion-proof
• Programmable scaler and decimal point
• CE-compliant
Typical Application
The MMRT has the ability to provide a local non-resettable
totalizer, a resettable totalizer, and a flow rate indicator
on a meter that provides an electronic output. The meters
that provide a direct electronic output are the Smith Meter
PRIME 4 meter, the mass meter, the turbine meter, and the
multi-viscosity turbine meters. This unit can also be used
with positive displacement meters that have a
transmitter mounted on them.
Uses
SPECIFICATIONS / INSTALLATION /OPERATION
Specifications
Accuracy: 100% when operated within specifications
Power
Internal Battery: 3V, Lithium
Life Expectancy: 3 years +
Inputs
Pulse Input
Type: Low speed (contact closures to DC common
Speed: 0 to 20 Hz
Minimum Low Time: 10 milliseconds
Minimum High Time: 40 milliseconds
Impedance: 101 K Ω
Voltage Thresholds:
Low 0 to 0.4 VDC
High 2.0 to 28 VDC
Maximum High 28 VDC
Type: High speed (requires a voltage source,
i.e., current sourcing sensor or a current
sinking sensor used with the provided
pullup resistors)
Speed: 0 to 10 KHz
Minimum Low Time: 80 microseconds
Advertisement
Table of Contents
Subscribe to Our Youtube Channel
Related Manuals for TechnipFMC Smith Meter MMRT
Summary of Contents for TechnipFMC Smith Meter MMRT
- Page 1 SPECIFICATIONS / INSTALLATION /OPERATION MMRT Bulletin SS09040 Issue/Rev. 0.2 (10/14) Smith Meter Totalizer / Rate Meter ® The MMRT is a combination explosion-proof totalizer and rate meter. The unit has two eight-digit totalizers, one being an accumulated non-resettable totalizer and the other being an eight-digit resettable batch totalizer.
-
Page 2: Battery Safety
Specifications (continued) PA-11 Pulse Repeater Minimum High Time: 20 microseconds For turbine meter applications requiring a preamplifier, (times are with a 0 to 5.0 volt swing) an optional PA-11 preamplifier can be fitted within the Input Impedance: 2K Ω above 5 VDC enclosure. -
Page 3: Wiring Diagrams
Wiring Diagrams Terminal Function Operation Ground Input B Count input Use with contact closure to ground up to 20Hz count speed Input A Count input Use with current sensing up to 10KHz count speed Reset Connect to ground to reset totalizer Program enable Connect to ground to enter program Backlight common... -
Page 4: Contact Closure Input
Contact Closure Input Solid State Count / Rate Input (Current Sourcing Sensor) Solid State Count / Rate Input (Current Sinking Sensor) Solid State Count/Rate Input (Magnetic Pickup) Backlight Wiring Bulletin SS09040 Issue/Rev. 0.2 (10/14) -
Page 5: Remote Reset
Program Mode Enable Remote Rate / Totalizer Toggle Remote Reset Smith Meter Turbine Meter with PA-11 Preamp ® Common +12 to 30 VDC PA-11 Reluctance Pickup Coil 1.6k Pullup Resistor Jumper in Position J2 Bulletin SS09040 Issue/Rev. 0.2 (10/14) -
Page 6: Dimensional Outline
Dimensional Outline Inches (mm) Note: 1. Dimensions – inches to the nearest tenth (millimetres to the nearest whole mm), each independently dimensioned from respective engineering drawings. 2. Hardware for Smith Meter Turbine Meter Mounting not shown. Operation Note: When a sourcing signal is applied to terminal 3, a power assist feature of the Courier extends the life of the Count Inputs battery. -
Page 7: Run Mode
Run Mode Press the key to reset the totalizer display to zero. This button has no effect on the rate meter screen. Count Inputs The front panel reset key provides an edge-sensitive Two screens are available on each of the totalizers. (momentary) reset. - Page 8 Count Scaler Programming Count Scale Factor The first screen in the program mode is used to enter the Calculating the Count Scale Factor count scale factor. The count scale factor is used to convert the incoming count pulses to the desired unit of measure to be displayed (feet, gallons, etc.) or to correct for a known amount of error (wheel wear, viscosity, etc.).
- Page 9 Rate Scaler Programming Rate Scale Factor The third program mode screen allows you to enter the rate Calculating the Rate Scale Factor scale factor. This 1/Tau rate meter calculates rate by measuring the time interval between input pulses, converting to a frequency (F = 1/Tau), and multiplying the product by the rate scaler.
- Page 10 Erie, Pennsylvania 16510 USA P:+1 814.898.5000 Germany Operation TechnipFMC Smith Meter GmbH 13460 Lockwood Road Building S01 Regentstrasse 1 TechnipFMC.com Houston, Texas 77044 USA 25474 Ellerbek, Germany P:+1 281.591.4000 P:+49 4101.304.0 © 2020 TechnipFMC plc. All rights reserved SS09040 Issue/Rev. 0.2 (10/14)
Need help?
Do you have a question about the Smith Meter MMRT and is the answer not in the manual?
Questions and answers