Liquid Controls SP4000 User Manual

CONTENTS

SAFETY INSTRUCTIONS ..............................................................................................................1

1. INTRODUCTION

2. INSTALLATION

3. APPLICA TIONS

4. WIRING

1.1 Unit Description............................................................................................................2

1.2 Specifications ...............................................................................................................3

2.1 General Mounting Hints .............................................................................................10

2.2 Mounting Diagrams ....................................................................................................10

3.1 Steam Mass ...............................................................................................................13

3.2 Steam Heat ................................................................................................................14

3.3 Steam Net Heat..........................................................................................................15

3.4 Steam Delta Heat.......................................................................................................16

3.5 Corrected Gas Volume...............................................................................................17

3.6 Gas Mass ...................................................................................................................18

3.7 Gas Combustion Heat................................................................................................19

3.8 Corrected Liquid Volume............................................................................................20

3.9 Liquid Mass ................................................................................................................21

3.10 Liquid Combustion Heat...........................................................................................22

3.11 Liquid Sensible Heat ................................................................................................23

3.12 Liquid Delta Heat......................................................................................................24

4.1 Terminal Designations................................................................................................25

4.2 Typical Wiring Connections........................................................................................26

4.2.1 Flow Input...................................................................................................26

4.2.2 Stacked DP Input .......................................................................................26

4.2.3 Pressure Input............................................................................................26

4.2.4 Temperature Input ......................................................................................27

4.2.5 Temperature 2 Input ...................................................................................27

4.3 Wiring In Hazardous Areas ........................................................................................28

4.3.1 Flow Input...................................................................................................28

4.3.2 Pressure Input............................................................................................28

4.3.3 Temperature Input ......................................................................................28

5. UNIT OPERATION

6. PROGRAMMING

5.1 Front Panel Operation Concept for Operate Mode ....................................................29

5.2 General Operation......................................................................................................30

5.3 Password Protection ..................................................................................................30

5.4 Relay Operation .........................................................................................................30

5.5 Pulse Output .............................................................................................................30

5.6 Analog Outputs...........................................................................................................30

5.7 Function Keys; Display Grouping ..........................................................................30

5.8 RS-232 Serial Port Operation ....................................................................................31

5.8.1 PC Communications ..................................................................................31

5.8.2 Operation of RS-232 Serial Port with Printers............................................31

5.9 RS-485 Serial Port Operation ....................................................................................31

5.10 Pause Computations Prompt ...................................................................................31

6.1 Front Panel Operation Concept for Program Mode ...................................................32

6.2 EZ Setup ....................................................................................................................33

6.3 Detailed Menu Descriptions .......................................................................................34

6.4 System Parameters....................................................................................................36

6.5 Display .......................................................................................................................41

6.6 System Units ..............................................................................................................43

6.7 Fluid Data...................................................................................................................50

6.8 Flow Input...................................................................................................................55

6.9 Other Input .................................................................................................................67

6.10 Pulse Output ............................................................................................................70

6.11 Current Output..........................................................................................................73

6.12 Relays ......................................................................................................................75

6.13 Communication ........................................................................................................79

6.14 Network Card ...........................................................................................................88

6.15 Service & Analysis....................................................................................................89

7. PRINCIPLE OF OPERATION

7.1 General ......................................................................................................................97

7.2 Square Law Flowmeter Considerations .....................................................................97

7.3 Flow Equations...........................................................................................................97

7.3.1 Flow Input Computation .............................................................................97

7.3.2 Pressure Computation ...............................................................................98

7.3.3 Temperature Computation..........................................................................98

7.3.4 Density/Viscosity Computation...................................................................98

7.3.5 Corrected Volume Flow Computation ........................................................99

7.3.6 Mass Flow Computation...........................................................................100

7.3.7 Combustion Heat Flow Computation .......................................................100

7.3.8 Heat Flow Computation............................................................................101

7.3.9 Sensible Heat Flow Computation.............................................................101

7.3.10 Liquid Delta Heat Computation ..............................................................101

7.3.11 Expansion Factor Computation for Square Law Flowmeters .................101

7.3.12 Uncompensated Flow Computation .......................................................102

7.4 Computation of the D.P. Factor................................................................................103

8. RS-232 SERIAL PORT

8.1 RS-232 Serial Port Description ................................................................................104

8.2 Instrument Setup by PC Over Serial Port ................................................................104

8.3 Operation of Serial Communication Port with Printers.............................................104

8.4 SP4000 RS-232 Port Pinout ....................................................................................104

9. RS-485 SERIAL PORT

9.1 RS-485 Serial Port Description ................................................................................105

9.2 General ....................................................................................................................105

9.3 Operation of Serial Communication Port with PC ....................................................105

9.4 SP4000 RS-485 Port Pinout ....................................................................................105

CONTENTS

10. FLOW COMPUTER SETUP SOFTWARE

10.1 System Requirements............................................................................................106

10.2 Cable and Wiring Requirements ............................................................................106

10.3 Installation for Windows™3.1 or 3.11.....................................................................106

10.4 Using the Flow Computer Setup Software .............................................................106

10.5 File Tab...................................................................................................................107

10.6 Setup Tab...............................................................................................................107

10.7 View Tab.................................................................................................................108

10.8 Misc. Tab................................................................................................................108

11. GLOSSARY OF TERMS

12. Diagnosis and Troubleshooting

Appendix A

Appendix B - Setup Menus

Warranty......................................................................................................................................119

Decoding Part Number................................................................................................................119

10 Glossary Of Terms ....................................................................................................109

12.1 Response of SP4000 on Error or Alarm.................................................................112

12.2 Diagnosis Flowchart and Troubleshooting .............................................................112

12.3 Error Messages...................................................................................................... 113

Fluid Properties Table ....................................................................................................116

Setup Menus with Operator Code Access ..................................................................... 117

Setup Menus with Supervisor Code Access .................................................................. 118

SAFETY INSTRUCTIONS

SP4000 Flow Computer

!

The following instructions must be observed.

• This instrument was designed and is checked in accordance with
regulations in force EN 60950 (“Safety of information technology
equipment, including electrical business equipment”).
A hazardous situation may occur if this instrument is not used for its
intended purpose or is used incorrectly. Please note operating
instructions provided in this manual.

• The instrument must be installed, operated and maintained by
personnel who have been properly trained. Personnel must read and
understand this manual prior to installation and operation of the
instrument.

• The manufacturer assumes no liability for damage caused by incorrect
use of the instrument or for modifications or changes made to the
instrument.

Technical Improvements

• The manufacturer reserves the right to modify technical data without
prior notice.

1

1. Introduction

SP4000 Flow Computer

1.1 Unit Description:

The SP4000 Flow Computer satisfies the instrument requirements
for a variety of flowmeter types in liquid, gas, steam and heat
applications. Multiple flow equations are available in a single
instrument with many advanced features.

The alphanumeric display offers measured parameters in easy
to understand format. Manual access to measurements and
display scrolling is supported.

The versatility of the Flow Computer permits a wide measure of
applications within the instrument package. The various hardware
inputs and outputs can be “soft” assigned to meet a variety of
common application needs. The user “soft selects” the usage of
each input/output while configuring the instrument.

The isolated analog output can be chosen to follow the volume
flow, corrected volume flow, mass flow, heat flow, temperature,
pressure, or density by means of a menu selection. Most
hardware features are assignable by this method.

The user can assign the standard RS-232 Serial Port for data
logging, or transaction printing, or for connection to a modem or
two way pager for remote meter reading.

A PC Compatible software program is available which permits
the user to rapidly redefine the instrument configuration.

Language translation option features also permit the user to
define his own messages, labels, and operator prompts. These
features may be utilized at the OEM level to creatively customize
the unit for an application or alternately to provide for foreign
language translations. Both English and a second language
reside within the unit.

NX-19
The NX19 feature is available for Natural Gas calculations where
the user requires compensation for compressibility effects.
Compensation for these compressibility effects are required at
medium to high pressure and are a function of the gas specific
gravity, % CO2, % Nitrogen, as well as temperature and pressure.
The compressibility algorithm used is that for NX-19.

Stacked differential pressure transmitter option
This option permits the use of a low range and high range DP
transmitter on a single primary element to improve flow transducer
and measurement accuracy.

Peak demand option
This option permits the determination of an hourly averaged flow
rate. Demand last hour, peak demand and time/date stamping for
applications involving premium billing.

Peak Demand Option
There are applications where customer charges are determined
in part by the highest hourly averaged flowrate observed during
a billing period.
The peak demand option for the SP4000 is intended for
applications where it is important to compute such an hourly
average flowrate, to note the value of the peak occurrence and
the corresponding time and date of that event.
The demand last hour rate is computed based on the current
total and the total 60 minutes prior. This value is recomputed
every 5 minutes.
The peak demand is the highest value observed in the demand
last hour.
The time and date stamp is the time and date at which the
highest peak demand occurred.
The Demand Last Hour and/or Peak Demand can be directly
viewed on the display by pressing the RATE key and then
scrolling through the rates with the ^/v arrow key until the
desired item is viewed.
The Peak Time and Date stamp can be viewed on the display
by pressing the TIME and then scrolling through the time
related parameters using the ^/v arrow keys until the desired
item is viewed.
All of these items can be included into the scrolling display list
along with the other process values and totalizers in a user
selectable list.
The peak demand may be cleared by pressing the CLEAR key
while viewing the PEAK DEMAND or by means of a command
on the serial port.
The Peak Time and Date stamp can be viewed on the display
by pressing the TIME and then scrolling through the time
related parameters using the ^/v arrow keys until the desired
item is viewed.
The Demand Last Hour and Peak Demand can be assigned to
one of the analog outputs. The demand last hour or peak
demand could thusly be output on a recording device such as a
strip chart recorder or fed into a building energy automation
system.
The Demand Last Hour and Peak Demand can be assigned to
one of the relays. The customer can be notified that he is
approaching or exceeding a contract high limit by assigning the
demand last hour to one of the relays and setting the warning
point into the set point. A warning message would also be
displayed.
The peak demand may be used in conjunction with the print list
and data logger to keep track of hourly customer usage
profiles.
The Demand Last Hour, Peak Demand, and Time and Date
Stamp information can be accessed over the serial ports. The
Peak Demand may also be reset over the serial ports.
The peak demand option may also be used as a condition to
call out in remote metering by modem or two way pager.

Data logging option
This option provides data storage information in 64k of battery
backed RAM. Items to be logged, conditions to initiate the log and
a variety of utilities to clear and access the data via the RS-232
port are provided.

EZ Setup

The unit has a special EZ setup feature where the user is guided
through a minimum number of steps to rapidly configure the
instrument for the intended use. The EZ setup prepares a series
of questions based on flow equation, fluid, and flowmeter type
desired in the application.

2

SP4000 Flow Computer

1.2 Specifications:

Environmental

Operating Temperature: 0 to +50 C
Storage Temperature: -40 to +85 C
Humidity : 0-95% Non-condensing
Materials: UL, CSA, VDE approved

Approvals: CE Approved Light Industrial, UL/CSA Pending
Display

Type: 2 lines of 20 characters, VFD
Character Size: 0.3" nominal
User selectable label descriptors and units of measure

Keypad

Keypad Type: Membrane Keypad
Keypad Rating: Sealed to Nema 4
Number of keys: 16
Raised Key Embossing

Enclosure

Enclosure Options: Panel, Wall, Explosion Proof
Size: See Chapter 2; Installation
Depth behind panel: 6.5" including mating connector
Type: DIN
Materials: Plastic, UL94V-0, Flame retardant
Bezel: Textured per matt finish
Equipment Labels: Model, safety, and user wiring

NX-19 Compressibility Calculations

Temperature -40 to 240 F
Pressure 0 to 5000 psi
Specific Gravity 0.554 to 1.0
Mole % CO2 0 to 15%
Mole % Nitrogen 0 to 15%

Analog Input:

Ranges

Voltage: 0-10 VDC, 0-5 VDC, 1-5 VDC

Current: 4-20 mA, 0-20 mA
Basic Measurement Resolution: 16 bit
Update Rate: 2 updates/sec minimum
Automatic Fault detection: Signal over/under-range,

Current Loop Broken

Calibration: Operator assisted learn mode. Learns Zero

and Full Scale of each range

Fault Protection:

Fast Transient: 1000 V Protection (capacitive clamp)

Reverse Polarity: No ill effects

Over-Voltage Limit: 50 VDC Over voltage protection

Over-Current Protection: Internally current limited

protected to 24 VDC

Optional: Stacked DP transmitter 0-20 mA or 4-20 mA

Pulse Inputs:

Number of Flow Inputs: one
Input Impedance: 10 k Ω nominal
Trigger Level: (menu selectable)

High Level Input

Logic On: 2 to 30 VDC
Logic Off: 0 to .9 VDC

Low Level Input (mag pickup)

Selectable sensitivity: 10 mV and 100 mV
Minimum Count Speed: 0.25 Hz
Maximum Count Speed: Selectable: 0 to 40 kHz
Overvoltage Protection: 50 VDC
Fast Transient: Protected to 1000 VDC (capacitive clamp)

Temperature, Pressure, Density Inputs

The compensation inputs usage are menu selectable for
temperature, temperature 2, pressure, density, steam trap
monitor or not used.

Power Input

The factory equipped power options are internally fused. An
internal line to line filter capacitor is provided for added transient
suppression. MOV protection for surge transient is also
supported

Universal AC Power Option:

85 to 276 Vrms, 50/60 Hz
Fuse: Time Delay Fuse, 250V, 500mA

DC Power Option:

24 VDC (16 to 48 VDC)
Fuse: Time Delay Fuse, 250V, 1.5A
Transient Suppression: 1000 V

Flow Inputs:

Flowmeter Types Supported:

Linear Flowmeters- Turbine
Square Law Flowmeters- Optional
Other Flowmeters- Optional

Calibration: Operator assisted learn mode
Operation: Ratiometric
Accuracy: 0.01% FS
Thermal Drift: Less than 100 ppm/C
Basic Measurement Resolution: 16 bit
Update Rate: 2 updates/sec minimum
Automatic Fault detection:

Signal Over-range/under-range
Current Loop Broken
RTD short
RTD open

Transient Protection: 1000 V (capacitive clamp)
Reverse Polarity: No ill effects
Over-Voltage Limit (Voltage Input): 50 VDC
Over-Current Limit (Internally limited to protect input to
24 VDC)

Available Input Ranges

(Temperature / Pressure / Density / Trap Monitor)
Current: 4-20 mA, 0-20 mA
Resistance: 100 Ohms DIN RTD

100 Ohm DIN RTD (DIN 43-760, BS 1904):

Three Wire Lead Compensation
Internal RTD linearization learns ice point resistance
1 mA Excitation current with reverse polarity protection
Temperature Resolution: 0.1°C

3

SP4000 Flow Computer

Datalogger (optional)

Type: Battery Backed RAM
Size: 64k
Initiate: Key, Interval or Time of Day
Items Included: Selectable List
Data Format: Printer or CSV Access via RS-232 command

Stored Information (ROM)

Steam Tables (saturated & superheated), General Fluid
Properties, Properties of Water, Properties of Air, Natural
Gas

User Entered Stored Information (EEPROM / Nonvolatile
RAM)

Transmitter Ranges, Signal Types
Fluid Properties

(specific gravity, expansion factor, specific heat, viscosity,
isentropic exponent, combustion heating value, Z factor,
Relative Humidity)

Units Selections (English/Metric)

RS-232 Communication

Uses: Printing, Setup, Modem, Two Way Pager, Datalogging
Baud Rates: 300, 600, 1200, 2400, 4800, 9600, 19200
Parity: None, Odd, Even
Device ID: 0 to 99
Protocol: Proprietary, Contact factory for more information
Chassis Connector Style: DB 9 Female connector
Power Output: 8V (150 mA max.) provided to Modem or

Two Way Pager

RS-485 Communication (optional)

Uses: Network Communications
Baud Rates: 300, 600, 1200, 2400, 4800, 9600, 19200
Parity: None, Odd, Even
Device ID: 1 to 247
Protocol: ModBus RTU
Chassis Connector Style: DB 9 Female connector

Excitation Voltage

24 VDC @ 100 mA overcurrent protected

Relay Outputs

The relay outputs usage is menu assignable to (Individually
for each relay) Hi/Lo Flow Rate Alarm, Hi/Lo Temperature
Alarm, Hi/Lo Pressure Alarm, Pulse Output (pulse options),
Wet Steam or General purpose warning (security).
(Peak demand and demand last hour optional)

Number of relays: 2 (3 optional)
Contact Style: Form C contacts (Form A with 3 relay option)
Contact Ratings: 240 V, 1 amp
Fast Transient Threshold: 2000 V

Analog Outputs

The analog output usage is menu assignable to correspond
to the Heat Rate, Uncompensated Volume Rate, Corrected
Volume Rate, Mass Rate, Temperature, Density, or Pressure.
(Peak demand and demand last hour optional)

Number of Outputs: 2
Type: Isolated Current Sourcing (shared common)
Isolated I/P/C: 500 V
Available Ranges: 0-20 mA, 4-20 mA (menu selectable)
Resolution: 16 bit
Accuracy: 0.05% FS at 20 Degrees C
Update Rate: 5 updates/sec
Temperature Drift: Less than 200 ppm/C
Maximum Load: 1000 ohms
Compliance Effect: Less than .05% Span
60 Hz rejection: 40 dB minimum
EMI: No effect at 10 V/M
Calibration: Operator assisted Learn Mode
Averaging: User entry of DSP Averaging constant to

cause an smooth control action

Isolated Pulse output

The isolated pulse output is menu assignable to
Uncompensated Volume Total, Compensated Volume Total,
Heat Total or Mass Total.
Isolation I/O/P: 500 V
Pulse Output Form (menu selectable): Open Collector NPN

or 24 VDC voltage pulse

Nominal On Voltage: 24 VDC
Maximum Sink Current: 25 mA
Maximum Source Current: 25 mA
Maximum Off Voltage: 30 VDC
Saturation Voltage: 0.4 VDC
Pulse Duration: User selectable
Pulse output buffer: 8 bit

Real Time Clock

The Flow Computer is equipped with either a super cap or a
battery backed real time clock with display of time and date.
Format:

24 hour format for time
Day, Month, Year format for date
Daylight Savings Time (optional)

Measurement

The Flow Computer can be thought of as making a series of
measurements of flow, temperature/density and pressure
sensors and then performing calculations to arrive at a result(s)
which is then updated periodically on the display. The analog
outputs, the pulse output, and the alarm relays are also
updated. The cycle then repeats itself.

Step 1: Update the measurements of input signals-

Raw Input Measurements are made at each input using
equations based on input signal type selected. The system
notes the “out of range” input signal as an alarm condition.

Step 2: Compute the Flowing Fluid Parameters-

The temperature, pressure, viscosity and density equations
are computed as needed based on the flow equation and
input usage selected by the user.

4

SP4000 Flow Computer

Step 3 : Compute the Volumetric Flow-

Volumetric flow is the term given to the flow in volume units.
The value is computed based on the flowmeter input type
selected and augmented by any performance enhancing
linearization that has been specified by the user.

Step 4: Compute the Corrected Volume Flow at Reference

Conditions­In the case of a corrected liquid or gas volume flow calculation,
the corrected volume flow is computed as required by the
selected compensation equation.

Step 5 : Compute the Mass Flow-

All required information is now available to compute the mass
flow rate as volume flow times density. A heat flow computation
is also made if required.

Step 6: Check Flow Alarms-

The flow alarm functions have been assigned to one of the
above flow rates during the setup of the instrument. A
comparison is now made by comparing the current flow rates
against the specified hi and low limits.

Step 7: Compute the Analog Output-

This designated flow rate value is now used to compute the
analog output.

Step 8: Compute the Flow Totals by Summation-

A flow total increment is computed for each flow rate. This
increment is computed by multiplying the respective flow rate
by a time base scaler and then summing. The totalizer format
also includes provisions for total rollover.

Step 9: Pulse Output Service-

The pulse output is next updated by scaling the total increment
which has just been determined by the pulse output scaler
and summing it to any residual pulse output amount.

Step 10: Update Display and Printer Output-

The instrument finally runs a task to update the various table
entries associated with the front panel display and serial
outputs.

Instrument Setup

The setup is password protected by means of a numeric lock
out code established by the user. The help line and units of
measure prompts assure easy entry of parameters.

An EZ Setup function is supported to rapidly configure the
instrument for first time use. A software program is also
available which runs on a PC using a RS-232 Serial for
connection to the Flow Computer. Illustrative examples may
be down loaded in this manner.

The standard setup menu has numerous subgrouping of
parameters needed for flow calculations. There is a well
conceived hierarchy to the setup parameter list. Selections
made at the beginning of the setup automatically affect
offerings further down in the lists, minimizing the number of
questions asked of the user.

In the setup menu, the flow computer activates the correct
setup variables based on the instrument configuration, the
flow equation, and the hardware selections made for the
compensation transmitter type, the flow transmitter type, and
meter enhancements (linearization) options selected. All
required setup parameters are enabled. All setup parameters
not required are suppressed.

Also note that in the menu are parameter selections which
have preassigned industry standard values. The unit will
assume these values unless they are modified by the user.

Most of the process input variables have available a “default”
or emergency value which must be entered. These are the
values that the unit assumes when a malfunction is determined
to have occurred on the corresponding input.

It is possible to enter in a nominal constant value for
temperature or density, or pressure inputs by placing the
desired nominal value into the default values and selecting
"manual". This is also a convenience when performing bench
top tests without simulators.

The system also provides a minimum implementation of an
“audit trail” which tracks significant setup changes to the unit.
This feature is increasingly being found of benefit to users or
simply required by Weights and Measurement Officials in
systems used in commerce, trade, or “custody transfer”
applications.

Simulation and Self Checking:

This mode provides a number of specialized utilities required
for factory calibration, instrument checkout on start-up, and
periodic calibration documentation.

A service password is required to gain access to this
specialized mode of operation. Normally quality, calibration,
and maintenance personnel will find this mode of operation
very useful.

Many of these tests may be used during start-up of a new
system. Output signals may be exercised to verify the electrical
interconnects before the entire system is put on line.

The following action items may be performed in the Diagnostic
Mode:

Print Calibration/Maintenance Report
View Signal Input (Voltage, Current, Resistance, Frequency)
Examine Audit Trail
Perform a Self Test
Perform a Service Test
View Error History
Perform Pulse Output Checkout / Simulation
Perform Relay Output Checkout / Simulation
Perform Analog Output Checkout / Simulation
Calibrate Analog Inputs using the Learn Feature
Calibrate Analog Output using the Learn Feature
Schedule Next Maintenance Date

Note that a calibration of the analog input/output will advance
the audit trail counters since it effects the accuracy of the
system.

5

Operation of Steam Trap Monitor

In applications on Saturated Steam, the otherwise unused
Compensation Input may be connected to a steam trap
monitor that offers the following compatible output signal levels:
4mA = trap cold
12 mA = trap warm and open (blowing)
20 mA = trap warm and closed

In normal operation a steam trap is warm and periodically
opens and closes in response to the accumulation of
condensate. A cold trap is indication that it is not purging the
condensate, a trap that is constantly blowing is an indication
that it is stuck open. To avoid a false alarm, the SP4000
permits the user to program a delay, or time period, which
should be considered normal for the trap to be either cold, or
open. An alarm will only be activated if the trap is detected as
continuously being in the abnormal states for a time period
greater than this TRAP ERROR DELAY time.

The user selects to use the Compensation Input for Trap
Monitoring by selecting “4-20mA TRAP STATUS as the INPUT
SIGNAL for OTHER INPUT1.

The user can program the ERROR DELAY time in HH:MM
format into both the TRAP ERROR DELAY (cold trap error)
menu and the TRAP BLOWING DELAY (trap stuck open)
menu.

The SP4000 will warn the operator of a TRAP ERROR when
an abnormal condition is detected. The error can be
acknowledged by pressing the ENTER key. However, the
problem may reassert itself if there is a continued problem
with the steam trap.

SP4000 Flow Computer

The user can also define whether he just wants the data
stored into the datalogger, or if he wants the data both stored
in the datalogger and sent out over the RS232 port in the
DATALOG ONLY menu.

The user can define the format he wishes the data to be
output in using the DATALOG FORMAT menu. Choices are
PRINTER and DATABASE. PRINTER format will output the
data records in a form suitable to dump to a printer. DATABASE
format will output the values in a CSV, or Comma Separated
Variable with Carriage return delimiting of each record.

A number of serial commands are also included to access
and manipulate information stored with in the datalogger.
Among these RS232 command capabilities are the following
actions:

Clear Data Logger
Send all Data in Datalogger
Send Only New Data since Datalogger was last Read
Send Data for the date included in the request
Send the column heading text for the CSV data fields
Send the column units of measure text for the CSV data

fields
Store one new record into datalogger now
Read Number of New Records in the datalogger
Read number of records currently in the datalogger
Read the maximum number of records capacity of the

datalogger
Move Pointer Back N records
Dump Record at Pointer
Dump records newer than pointer
Dump data from N records back

In addition, the event is noted in the ERROR LOG.
It is also possible for the user to program a trap malfunction

as one of the conditions worthy of a CALL OUT of a problem
by selecting this error in the ERROR MASK.

The Data-Logging option of the SP4000 can also be used to
log the performance of the trap by storing the % of time the
trap has been cold, and/or blowing open during the datalog
interval.

Datalogging Option

The Datalogging Option for the SP4000 permits the user to
automatically store sets of data items as a record on a periodic
basis. A datalog record may be stored as the result of either a
PRINT key depression, or an INTERVAL, or a TIME OF DAY
request for a datalog.

The user defines the list of items to be included in each
datalog by selecting these in the PRINT LIST menu located
within the COMMUNICATIONS SUBMENU.

The user selects what will trigger a datalog record being
stored in the PRINT INITIATE menu. The choices are PRINT
KEY, INTERVAL, and TIME OF DAY.

The user can select the datalog store interval in a HH:MM
format in the PRINT INTERVAL menu.

The datalogger option is used in conjunction with the RS-232
port in remote metering applications.

The technical details associated with the serial commands
are listed in Universal Serial Protocol Manual available upon
request.

RS-232 Serial Port

The Flow Computer has a general purpose RS-232 Port
which may be used for any one of the following purposes:

Transaction Printing

Data Logging

Remote Metering by Modem

Remote Metering by Two Way Pager

Computer Communication Link

Configuration by Computer

Print System Setup

Print Calibration/Malfunction History

Instrument Setup by PC’s over Serial Port

A Diskette program is provided with the Flow Computer
that enables the user to rapidly configure the Flow Computer
using an Personnel Computer. Included on the diskette are
common instrument applications which may be used as a
starting point for your application. This permits the user to
have an excellent starting point and helps speed the user
through the instrument setup.

The user can also select the store time of day in a 24 hr
HH:MM format in the PRINT TIME menu.

6

SP4000 Flow Computer

Operation of Serial Communication Port with Printers

The Flow Computer’s RS-232 channel supports a number
of operating modes. One of these modes is intended to
support operation with a printer in metering applications
requiring transaction printing, data logging and/or printing
of calibration and maintenance reports.

For transaction printing, the user defines the items to be
included in the printed document. The user can also select
what initiates the transaction print generated as part of the
setup of the instrument. The transaction document may be
initiated via a front panel key depression.

In data logging, the user defines the items to be included in
each data log as a print list. The user can also select when
or how often he wishes a data log to be made. This is done
during the setup of the instrument as either a time of day or
as a time interval between logging.

The system setup and maintenance report list all the
instrument setup parameters and usage for the current
instrument configuration. In addition, the Audit trail
information is presented as well as a status report listing
any observed malfunctions which have not been corrected.

The user initiates the printing of this report at a designated
point in the menu by pressing the print key on the front
panel.

Operating Serial Communication Port with Modems

The SP4000 offers a number of capabilities that facilitate
its use with modems. The SP4000’s RS232 port can be
connected to a modem in order to implement a remote
metering system that uses either the phone companies
standard phone lines or cellular telephone system. In
addition to remote meter readings, the serial commands
may also be used to examine and/or make setup changes
to the unit, and to check for proper operation or investigate
problems. Several hundred commands are supported. A
compatible industrial modem accessory and interconnecting
cabling is offered in the MPP2400N specifically designed
for use with the SP4000.

The SP4000 and Modem can be used together to create
systems with one or more of the following capabilities:

1. Poll the SP4000 unit for information from a remote
PC.

2. Call Out from the SP4000 unit to a remote PC on a
scheduled reading time and/or crisis basis

3. Some combination of the above two descriptions where
the unit is polled by one PC and calls into to a different
PC if a problem is detected.

In fact, up to five ST-2 units can share the same modem.
Each SP4000 must have a unique DEVICE ID. This
multidropping of flow computers on a single modem is
popular when there are several flow computers mounted
near each other.

In most applications using modem communications, the
SP4000’s RS232 USAGE is first set equal to MODEM.
Each SP4000 on a shared modem cable is given a unique
serial device address or DEVICE ID. The BAUD RATE is
commonly set to 2400, the PARITY set to NONE, and the
HANSHAKING set to NONE to complete the basic setup.
The remote PC’s communication settings are chosen to
match these.

The level of complexity of the Supetrol-2 to Modem
connection can range from simple to more complex.

In a simple system a remote PC will call into the telephone
number of the modem. The modem will answer the call,
and establish a connection between the SP4000 and the
remote PC. An exchange of information can now occur.
The SP4000 will act as a slave and respond to commands
and requests for information from the remote MASTER
PC. The MASTER PC will end the exchange by handing
up.

However, it is more common that the SP4000 will be used
to control the modem. In these applications the following
communication menu settings would be used:

RS232 USAGE = MODEM
DEVICE ID, BAUD RATE, PARITY, and
HANDSHAKING are set
MODEM CONTROL = YES
DEVICE MASTER = YES (When multidropping
several SP4000's, only one unit will be the DEVICE
MASTER)
MODEM AUTO ANSWER = YES (This instructs the
unit to answer incoming calls)
HANG UP IF INACTIVE = YES (This instructs the
unit to hang up the line if no activities occur within
several minutes).

A more complex form of a remote metering system can be
implemented where the SP4000 will initiate a call to contact
the remote PC at a scheduled time and/or in the event of a
problem that has been detected. In these applications the
SP4000 has additional setup capabilities including:

The SP4000 must have a unique identifier assigned
to it (using the TAG NUMBER)
Call Out Telephone number must be entered in the
CALL OUT NUMBER
The scheduled call out time for the daily reading
must be entered in CALL OUT TIME
A decision must be made whether the unit will be
used to call on error(s) in CALL ON ERROR
The particular error conditions to call out on must be
defined in the ERROR MASK
The NUMBER OF REDIALS to be attempted if line
is busy must be entered in that cell
HANG UP IF INACTIVE= YES will disconnect the
call if remote computer does not respond.

7

SP4000 Flow Computer

Consult the Universal Serial Commands User Manual for
details on the individual commands supported by the
SP4000. Contact the SPONSLER Flow Applications Group
for a discussion on the remote metering system capabilities
you are considering.

NOTE: Some modems can be configured in advance to
answer incoming calls, terminate phone connections if
communications is lost. In such applications there may be
no need for the SP4000 to be functioning to “control” the
modem. Setting the RS233 USAGE = COMPUTER will
likely work.

Operating Serial Communication Port with Two Way
Paging

The SP4000 offers a number of capabilities that facilitate
its use with two way paging systems. The SP4000’s RS232
port can be connected to a compatible two way pager
transceiver in order to implement a wireless, two way
paging, remote metering system. A compatible, industrial
Two Way Pager Transceiver accessory is offered in the
TWPNW specifically designed for use with the SP4000. A
monthly service contract with a two way paging provider,
for example Skytel, is required. The remote user or system
sends or receives information from the SP4000 using either
a Two Way Pager, such as Motorola’s Pagerwriter 2000
pager, or by email via the INTERNET.

In addition to obtaining remote meter readings, the serial
commands may also be used to examine and/or make
setup changes to the unit, and/or to check for proper
operation or investigate problems. Several hundred
commands are supported.

The SP4000 and TWPNW can be used together to create
systems with one or more of the following capabilities:

1. Poll the SP4000 unit for information from a remote PC
over the Internet via email.

2. Call Out from the SP4000 unit to a remote PC on a
scheduled reading time and/or crisis basis by email
and the internet

3. Some combination of the above two descriptions where
the unit is polled by one PC and calls into to a different
PC or pager if a problem is detected.

In fact, up to five ST-2 units can share the same Two Way
Pager. Each SP4000 must have a unique DEVICE ID. This
multidropping of flow computers on a single Two Way
Pager is popular when there are several flow computers
mounted near each other.

To setup the information to be sent in this example:

Setup your desired PRINT LIST
Setup what will initiate the storage of information in
the PRINT INITIATE menu
Setup any related parameters: PRINT INTERVAL or
PRINT TIME
Set DATALOG ONLY = YES if data records will

be sent at a later time
= NO if data records will be
sent immediately as well as
being stored

Set DATALOG FORMAT = PRINTER

To setup the communication channel, the following
communication menu settings would be used:

RS232 USAGE = PAGER
Set the DEVICE ID,
BAUD RATE= 9600,
PARITY= NONE,
HANDSHAKING=NONE
DEVICE MASTER = YES (When multidropping
several SP4000, only one unit will be the DEVICE
MASTER)
CALL OUT NUMBER = <email name of receiver> or

<PIN of receiving PAGER>

CALL OUT TIME = time of a scheduled call out in

HH:MM format (if used set a different call
out time to each unit, several hours apart)

NUMBER OF REDIALS = 3 (if there is poor coverage

unit will try to up to 3 times)

PAGER PIN NUMBER = <enter the Pager Pin

Number given you by Skytel >

DESTINATION TYPE= E-MAIL (or PAGER PIN if

pager or mailbox)

MAX BLOCK SIZE = 3 (This is number of blocks (1-

4) of 128 bytes to be sent in each message.
A smaller number of blocks increases the
chance of successful communication
transfers.

If you also wish the unit to CALL OUT in the event of a
problem, the following menu settings would be used:

CALL ON ERROR = YES
ERROR MASK configured to suit the applications

needs

The SP4000’s RS232 USAGE is first set equal to PAGER.
Each SP4000 on a shared PAGER is given a unique serial
device address or DEVICE ID. The BAUD RATE is
commonly set to 9600, the PARITY set to NONE, and the
HANSHAKING set to NONE to complete the basic setup.

In a simple system, the SP4000 will send an email to an
address programmed into the unit. The recipient will receive
a daily email report containing the information desired in
the form of a readable report.

8

SP4000 Flow Computer

Initial Installation and Startup
When a SP4000 / TWP pair are first put on line, several

service actions are required. These include:

1. Allow time for the SP4000 to charge the batteries in

the TWPNW (see note below)

2. Set up an account with Skytel and choose a suitable

service plan for this application

3. Initializing the Pager using the SP4000 INITIALIZE

PAGER utility

4. Registering the pager with Skytel using the SP4000

REGISTER PAGER utility

5. Observe a sample exchange of information between

the SP4000 and the remote user using the CLP
PROGRESS

NOTE: It is important to wait 24 hours for the Two Way

Pager Transceiver to charge its batteries prior to
initial use. Otherwise irradic problems may occur
during registration.

Special Utilities for steps 3, 4, and 5 are built into the
SP4000. These may be summarized as follows:

INITIALIZE PAGER = YES causes the SP4000 to send

commands to initialize the pager. The
responses to the command can be either
SUCCESS if all is well or FAILED if a
problem is detected.

REGISTER PAGER = YES causes the SP4000 to attempt

to establish a connection with a local Skytel
tower. A series of informative messages
will appear as the SP4000 attempts to
register your PAGER PIN NUMBER with
Skytel. Note that your service plan must be
setup with Skytel before attempting to
register the pager.
The responses to the command can be
either SUCCESS if all is well or FAILED if a
problem is detected.

A more complex form of a remote metering system can be
implemented where the SP4000 will initiate a call to a
“mailbox” at Skytel. The Remote PC can access his mailbox
and read and process the various messages over the
internet as part of a customer billing system. Skytel offers a
software developers kit for customers wishing to create
custom solutions.

In each message, the SP4000 provides a header containing
information that can be used to determine such items as:

1. What is the TAG NO of the device that sent the
information?

2. What is its SENSOR SN

3. What is its DEVICE ID?

4. What type of message follows?

a. Exception Report (Message Type-1)
b. Send one Data Set (Message Type 2)
c. Send all new Datalog Data Sets (Message type 3)

5. What is the time and data of the first data record?

6. What information is contained in the data fields of CSV
that follow?

7. Message Delimiter (CRLF)

8. For commands returning data, the data now follows in
a CSV format

Consult the Universal Serial Commands User Manual for
details on the individual commands supported by the
SP4000.

Contact the SPONSLER Flow Applications Group for a
discussion on the remote metering system capabilities you
are considering.

RS-485 Serial Port (optional)

The RS-485 serial port can be used for accessing flow
rate, total, pressure, temperature, density and alarm status
information. The port can also be used for changing presets
and acknowledging alarms.

CLP PROGRESS is a diagnostic menu location that

provides information on the information
exchanges for test purposes (see CLP
Progress Menu in chapter 6). Contact the
applications group at SPONSLER if
problems are encountered in initial setup or
use of two way paging applications.

9

2. Installation

SP4000 Flow Computer

General Mounting Hints

Mounting Procedure

NEMA4X / IP65 Specifications

2.1 General Mounting Hints:

The SP4000 Flow Computer should be located in an area with a clean, dry
atmosphere which is relatively free of shock and vibration. The unit is installed in a

5.43" (138mm) wide by 2.68" (68mm) high panel cutout. (see Mounting Dimensions)
To mount the Flow Computer, proceed as follows:

a. Prepare the panel opening.
b. Slide the unit through the panel cutout until the it touches the panel.
c. Install the screws (provided) in the mounting bracket and slip the bracket over the

rear of the case until it snaps in place.

d. Tighten the screws firmly to attach the bezel to the panel. 3 in. lb. of torque must

be applied and the bezel must be parallel to the panel.

NOTE: To seal to NEMA4X / IP65 specifications, supplied bezel kit must be used

and panel cannot flex more than .010".
When the optional bezel kit is used, the bezel adaptor must be sealed to the
case using an RTV type sealer to maintain NEMA4X / IP65 rating.

2.2 Mounting Diagrams:
Standard Mounting

SP4000

Mounting Bracket

Dimensions

5.67 (144)

3.43
(87)

RATE
TOTAL

START

1

GRAND6SCROLL7PRE 28DENS

STOP

GPM

147.43
GAL

267395.749

PRINT

TEMP4PRE 13RATE2TOTAL

CLEAR•MENU

5

HELP

TIME

0

9

–

6.18
Dotted Line Shows Optional Bezel Kit

Bezel Kit Mounting

SP4000

Bezel Adaptor

Gasket

Mounting Bracket

6.15

0.28 (7.2)

2.83
(72)

ENTER

0.4 (10)

(156)

0.5

(13)

5.43

(138)

Panel

Cutout

2.68
(68)

10

Dimensions are in inches (mm)

2.2 Mounting Diagrams:

(continued)

SP4000 Flow Computer

NEMA4 Wall Mount (mounting option F)

12.97 (329)

9.86 (250)

1.75 (44)

5.13

(130)

11

SP4000 Flow Computer

2.2 Mounting Diagrams:

(continued)

Explosion Proof Mount (mounting option X)

12.06

(306.3)

9.31

(236.5)

3.81

6.56

(96.8)

(166.6)

.28 ±.02
(7.1 ±.5)

1.31

(33.3)

10.6

(269.2)

1.75

(44.5)

1/4" - 20UNC-2B
TAP x 5/16" DEEP
(6) HOLES CENTERED
ON THREE SIDES FOR
MOUNTING

1/2"- 14 NPT PLUGS
(2 PLACES)

2.5

(63.5)

5.09

(129)

10.19

(258.8)

3.5

(88.9)

2.5

(63.5)

3.0

(76.2)

8.88

(225.5)

(79.4)

(12.7)

3.13

.5

5.1

(129.5)

1/4" - 20UNC-2B
TAP x 5/16" DEEP
(6) HOLES CENTERED
ON THREE SIDES FOR
MOUNTING

2.13
(54)

3

(76.2)

10.19

(258.8)

(88.9)

(76.2)

3.13

(79.4)

3.5

3

4.63

(117.5)

.25

(6.35)

.5

(12.7)

Explosion Proof Mount (mounting option E)

6.25 (158.8)

7.75 (196.9)

10.5 (266.7)

9.125 (231.8)

11.5 (292.1)

6.75 (171.5)

7.75 (196.9)

1/2" - 14 NPT Plugs
(2 Places)

3.25

(82.6)

2.25

(57.2)

2.25

(57.2)

12

3. Applications

SP4000 Flow Computer

CORRECTED
GAS VOLUME

3.1 Corrected Gas Volume

Measurements:

A flowmeter measures the actual volume flow in a gas line. Temperature and pressure
sensors are installed to correct for gas expansion effects.

Calculations:

• Corrected Volume is calculated using the flow, temperature and pressure inputs as
well as the gas characteristics stored in the flow computer (see "FLUID DATA"
submenu). Use the "OTHER INPUT" submenu to define reference temperature and
reference pressure values for standard conditions.

Output Results:

• Display Results

Corrected Volume or Actual Volume Flow Rate, Resettable Total, Non-Resettable
Total, Temperature, Pressure, Density (optional: peak demand, demand last
hour, time/date stamp)

• Analog Output

Corrected Volume or Actual Volume Flow Rate, Temperature, Pressure, Density,
Peak Demand, Demand Last Hour

• Pulse Output

Corrected Volume or Actual Volume Total

• Relay Outputs

Corrected Volume or Actual Volume Flow Rate, Total, pressure, Temperature
Alarms, Peak Demand, Demand Last Hour

Applications:

Monitoring corrected volume flow and total of any gas. Flow alarms are provided via
relays and datalogging is available via analog (4-20mA) and serial outputs.

Corrected
Gas Volume
Illustration

Calculations

TOTAL

1

GRAND6SCROLL7PRE 28DENS

Pressure

Volume Flow

Transmitter

Pulse Input; Average K-Factor

Volume Flow =

Analog Input; Linear

Volume Flow = % input • Full Scale Flow

Corrected Volume Flow

RATE

3

2

Flowmeter Temperature

4

9

CLEAR•MENU

5

HELP

TIME

0

–

Transmitter

ENTER

PRINT

TEMP

PRE 1

input frequency • time scale factor

K-Factor

PT

Corrected Volume Flow = Volume Flow •• •

P

ref

ref

TZ

Z

ref

13

SP4000 Flow Computer

GAS MASS

3.2 Gas Mass

Measurements:

A flowmeter measures the actual volume flow in a gas line. Temperature and pressure
sensors are installed to measure temperature and pressure.

Calculations:

• Density and mass flow are calculated using gas characteristics stored in the flow
computer.

Output Results:

• Display Results

Mass or Volume Flow Rate, Resettable Total, Non-Resettable Total,
Temperature, Pressure, Density (optional: peak demand, demand last hour,
time/date stamp)

• Analog Output

Mass or Volume Flow Rate, Temperature, Pressure, Density, Peak Demand,
Demand Last Hour

• Pulse Output

Mass or Volume Total

• Relay Outputs

Mass or Volume Flow Rate, Total, Pressure, Temperature, Density Alarms,
Peak Demand, Demand Last Hour

Applications:

Monitoring mass flow and total of gas. Flow alarms are provided via relays and datalogging
is available via analog (4-20mA) and serial outputs.

Gas Mass
Illustration

Calculations

TOTAL

1

GRAND6SCROLL7PRE 28DENS

Pressure

Transmitter

3

2

Flowmeter Temperature

PRE 1

RATE

Mass Flow

Mass Flow = Actual Volume Flow • ρ

ρ

= Reference density

ref

T

= Reference temperature

ref

P

= Reference pressure

ref

Z

= Reference Z-factor

ref

TEMP

4

9

PRINT

CLEAR•MENU

5

HELP

TIME

0

Transmitter

ENTER

–

PT

•• •

ref

P

ref

ref

TZ

Z

ref

14

SP4000 Flow Computer

GAS COMBUSTION
HEAT

3.3 Gas Combustion Heat

Measurements:

A flowmeter measures the actual volume flow in a gas line. Temperature and pressure
sensors are installed to measure temperature and pressure.

Calculations:

• Density, mass flow and combustion heat are calculated using gas characteristics
stored in the flow computer.

Output Results:

• Display Results

Heat, Mass or Volume Flow Rate, Resettable Total, Non-Resettable Total,
Temperature, Pressure, Density (optional: peak demand, demand last hour,
time/date stamp)

• Analog Output

Heat, Mass or Volume Flow Rate, Temperature, Pressure, Density, Peak
Demand, Demand Last Hour

• Pulse Output

Heat, Mass or Volume Total

• Relay Outputs

Heat, Mass or Volume Flow Rate, Total, Pressure, Temperature Alarms, Peak
Demand, Demand Last Hour

Applications:

Calculate the energy released by combustion of gaseous fuels.

Gas Combustion
Heat

Calculations

TOTAL

1

GRAND6SCROLL7PRE 28DENS

Pressure

Transmitter

3

2

Flowmeter Temperature

PRE 1

RATE

Combustion Heat Flow

Combustion Energy = C • ρ

ref

C = Specific combustion heat

ρ

= Reference density

ref

Q = Volume flow

PRINT

TEMP

• Q •••

4

0

9

CLEAR•MENU

5

HELP

TIME

Transmitter

ENTER

–

PT

P

ref

ref

Z

ref

TZ

15

SP4000 Flow Computer

Corrected
Liquid Volume

Corrected
Liquid Volume
Illustration

3.4 Corrected Liquid Volume

Measurements:

A flowmeter measures the actual volume flow in a liquid line. A temperature sensor is
installed to correct for liquid thermal expansion. A pressure sensor can be installed to
monitor pressure. Pressure measurement does not affect the calculation.

Calculations:

• Corrected Volume is calculated using the flow and temperature inputs as well as the
thermal expansion coefficient stored in the flow computer (see "FLUID DATA"
submenu). Use the "OTHER INPUT" submenu to define reference temperature and
density values for standard conditions.

Output Results:

• Display Results

Corrected Volume and Actual Volume Flow Rate, Resettable Total, Non­Resettable Total, Temperature, Pressure, Density (optional: peak demand,
demand last hour, time/date stamp)

• Analog Output

Corrected Volume and Actual Volume Flow Rate, Temperature, Pressure,
Density, Peak Demand, Demand Last Hour

• Pulse Output

Corrected Volume and Actual Volume Total

• Relay Outputs

Corrected Volume and Actual Volume Flow Rate , Total, Pressure, Temperature
Alarms, Peak Demand, Demand Last Hour

Applications:

Monitoring corrected volume flow and total of any liquid. Flow alarms are provided via
relays and datalogging is available via analog (4-20mA) and serial outputs.

PRINT

TEMP

PRE 1

RATE

TOTAL

1

GRAND6SCROLL7PRE 28DENS

3

2

CLEAR•MENU

5

4

9

HELP

TIME

0

ENTER

–

Calculations

Flowmeter Temperature

Optional

Pressure

Transmitter

Transmitter

Volume Flow

Pulse Input; Average K-Factor

input frequency • time scale factor

Volume Flow =

K-Factor

Analog Input; Linear

Volume Flow = % input • Full Scale Flow

Corrected Volume Flow

Corrected Volume Flow = vol. flow • (1 - α • (Tf-Tref))

α = Thermal expansion coefficient • 10

-6

16

2

SP4000 Flow Computer

Liquid Mass

3.5 Liquid Mass

Measurements:

Actual volume flow is measured by the flowmeter. Temperature is measured by the
temperature transmitter. A pressure transmitter can be used to monitor pressure. Pressure
measurement does not affect the calculation. A density transmitter may be used in place
of a temperature transmitter for direct density measurement.

Calculations:

• The density and mass flow are calculated using the reference density and the thermal
expansion coefficient of the liquid (see "FLUID DATA" submenu)

Output Results:

• Display Results

Mass or Volume Flow Rate, Resettable Total, Non-Resettable Total,
Temperature, Pressure, Density (optional: peak demand, demand last hour,
time/date stamp)

• Analog Output

Mass or Volume Flow Rate, Temperature, Pressure, Density, Peak Demand,
Demand Last Hour

• Pulse Output

Mass or Volume Total

• Relay Outputs

Mass or Volume Flow Rate, Total, Temperature, Pressure, Density Alarms,
Peak Demand, Demand Last Hour

Applications:

Monitoring mass flow and total of any liquid. Flow alarms are provided via relays and
datalogging is available via analog (4-20mA) and serial outputs.

Liquid Mass
Illustration

Calculations

TOTAL

1

GRAND6SCROLL7PRE 28DENS

Flowmeter Temperature

3

2

Optional

Pressure

Transmitter

4

9

5

TIME

0

–

Transmitter

T

PRINT

TEMP

PRE 1

RATE

Volume Flow

As calculated in section 3.4

Mass Flow

Mass Flow = volume flow • (1-a • (T1-T

α = Thermal expansion coefficient • 10

CLEAR•MENU

HELP

ENTER

1

))2 • ref. density

ref

-6

NOTE:

A density transmitter may be used
for direct density measurement.

17

SP4000 Flow Computer

LIQUID COMBUSTION
HEAT

3.6 Liquid Combustion Heat

Measurements:

Actual volume flow is measured by the flowmeter. Temperature is measured by the
temperature transmitter. A pressure transmitter can be used to monitor pressure. Pressure
measurement does not affect the calculation.

Calculations:

• The density, mass flow and combustion heat are calculated using the fluid
characteristics stored in the flow computer. (see "FLUID DATA" submenu)

Output Results:

• Display Results

Combustion Heat, Mass or Volume Flow Rate, Resettable Total, Non-Resettable
Total, Temperature, Pressure, Density (optional: peak demand, demand last
hour, time/date stamp)

• Analog Output

Combustion Heat, Mass or Volume Flow Rate, Temperature, Pressure, Density,
Peak Demand, Demand Last Hour

• Pulse Output

Combustion Heat, Mass or Volume Total

• Relay Outputs

Combustion Heat, Mass or Volume Flow Rate, Total, Temperature, Pressure
Alarms, Peak Demand, Demand Last Hour

Applications:

Calculate the energy released by combustion of liquid fuels

Liquid Combustion
Heat Illustration

Calculations

TOTAL

1

GRAND6SCROLL7PRE 28DENS

Flowmeter Temperature

3

2

Optional

Pressure

Transmitter

4

9

CLEAR•MENU

5

HELP

TIME

0

–

Transmitter

T

1

PRINT

TEMP

PRE 1

RATE

Volume Flow

As calculated in section 3.4

Heat Flow

Heat Flow = C • volume flow • (1-α • (T1-T

α = Thermal expansion coefficient • 10

C = Specific combustion heat

ENTER

))2 • ref. density

ref

-6

18

SP4000 Flow Computer

LIQUID SENSIBLE
HEAT

3.7 Liquid Sensible Heat

Measurements:

Actual volume flow is measured by the flowmeter. Temperature is measured by the
temperature transmitter. A pressure transmitter can be used to monitor pressure. Pressure
measurement does not affect the calculation.

Calculations:

• The density, mass flow and sensible heat are calculated using the fluid characteristics
stored in the flow computer. (see "FLUID DATA" submenu)

Output Results:

• Display Results

Sensible Heat, Mass or Volume Flow Rate, Resettable Total, Non-Resettable
Total, Temperature, Pressure, Density (optional: peak demand, demand last
hour, time/date stamp)

• Analog Output

Sensible Heat, Mass or Volume Flow Rate, Temperature, Pressure, Density,
Peak Demand, Demand Last Hour

• Pulse Output

Sensible Heat, Mass or Volume Total

• Relay Outputs

Sensible Heat, Mass or Volume Flow Rate, Total, Temperature, Pressure Alarms,
Peak Demand, Demand Last Hour

Applications:

Calculate the energy stored in a condensate with respect to water at 32°F (0°C).

Liquid Sensible Heat
Illustration

Calculations

TOTAL

1

GRAND6SCROLL7PRE 28DENS

Flowmeter Temperature

3

2

Optional

Pressure

Transmitter

4

9

5

TIME

0

–

Transmitter

T

PRINT

TEMP

PRE 1

RATE

Volume Flow

As calculated in section 3.4

Heat Flow

Heat Flow = C • volume flow • (1-α • (T1-T

α = Thermal expansion coefficient • 10

C = Specific heat

CLEAR•MENU

HELP

1

-6

ENTER

))2 • ref. density • (T1 - 32)

ref

19

SP4000 Flow Computer

LIQUID DELTA HEAT

3.8 Liquid Delta Heat

Measurements:

Actual volume flow is measured by the flowmeter. Temperature of the supply and return
lines are measured by the temperature transmitters.

Calculations:

• The density, mass flow and delta heat are calculated using values of the heat carrying
liquid stored in the flow computer. (see "FLUID DATA" submenu)

Output Results:

• Display Results

Heat, Mass or Volume Flow Rate, Resettable Total, Non-Resettable Total,
Temperature1, Temperature2, Delta Temperature, Density, (optional: peak
demand, demand last hour, time/date stamp)

• Analog Output

Heat, Mass or Volume Flow Rate, Temperature1, Temperature2, Delta
Temperature, Density, Peak Demand, Demand Last Hour

• Pulse Output

Heat, Mass or Volume Total

• Relay Outputs

Heat, Mass or Volume Flow Rate, Total, Temperature Alarms, Peak Demand,
Demand Last Hour

Applications:

Calculate the energy which is extracted by a heat exchanger from heat carrying liquids.

Liquid Delta Heat
Illustration

Calculations

Temperature

Transmitter

Warm

Cold

Flowmeter

Water

Heat = Volume Flow • ρ(T1) • [h(T2) – h(T1)]

Other heat carrying liquids

Heat = C • volume flow • (1-α • (T1-T

T2

PRE 1

RATE

TOTAL

1

GRAND6SCROLL7PRE 28DENS

3

2

PRINT

TEMP

5

4

TIME

0

9

–

T1

Temperature

Transmitter

ref

CLEAR•MENU

HELP

))2 • ρ

ENTER

• (T2 - T1)

ref

Water

WHERE: Delta T > Low Delta T Cutoff
α = Thermal expansion coefficient • 10

-6

C = Mean specific heat
ρ(T1) = Density of water at temperature T
h(T1) = Specific enthalpy of water at temperature T

1

h(T2) = Specific enthalpy of water at temperature T

ρ

= Reference density

ref

T

= Reference temperature

ref

20

1
2

SP4000 Flow Computer

STEAM MASS

3.9 Steam Mass

Measurements:

A flowmeter measures the actual volume flow in a steam line. A temperature and/or
pressure sensor is installed to measure temperature and/or pressure.

Calculations:

• Density and mass flow are calculated using the steam tables stored in the flow
computer.

• Saturated steam requires either a pressure or temperature measurement with the
other variable calculated using the saturated steam curve.

• Optional steam trap monitoring using Compensation Input 1.

Input Variables:

Superheated Steam:
Saturated Steam:

Output Results:

• Display Results

Mass or Volume Flow Rate, Resettable Total, Non-Resettable Total,
Temperature, Pressure, Density (optional: peak demand, demand last hour,
time/date stamp)

• Analog Output

Mass or Volume Flow Rate, Temperature, Pressure Density, Peak Demand,
Demand Last Hour

• Pulse Output

Mass or Volume Total

• Relay Outputs

Mass or Volume Flow Rate , Total, Pressure, Temperature, Alarms, Peak
Demand, Demand Last Hour

Flow, temperature and pressure

Flow, temperature or pressure

Steam Mass
Illustration

Calculations

Applications:

Monitoring mass flow and total of steam. Flow alarms are provided via relays and
datalogging is available via analog (4-20mA) and serial outputs.

PRINT

TEMP

PRE 1

RATE

GRAND6SCROLL7PRE 28DENS

Pressure

Transmitter

TOTAL

3

2

1

714

Flowmeter

5

4

TIME

0

9

Temperature

Transmitter

CLEAR•MENU

HELP

–

Condulet

ENTER

Mass Flow

Mass Flow = volume flow • density (T, p)

21

SP4000 Flow Computer

STEAM HEAT

3.10 Steam Heat

Measurements:

A flowmeter measures the actual volume flow in a steam line. A temperature and/or
pressure sensor is installed to measure temperature and/or pressure.

Calculations:

• Density, mass flow and heat flow are calculated using the steam tables stored in the
flow computer. The heat is defined as the enthalpy of steam under actual conditions
with reference to the enthalpy of water at T=0°C.

• Saturated steam requires either a pressure or temperature measurement with the
other variable calculated using the saturated steam curve.

• Optional steam trap monitoring using compensation input.

Input Variables:

Superheated Steam:
Saturated Steam:

Output Results:

• Display Results

Heat, Mass or Volume Flow Rate, Resettable Total, Non-Resettable Total,
Temperature, Pressure, Density (optional: peak demand, demand last hour,
time/date stamp)

• Analog Output

Heat, Mass or Volume Flow Rate, Temperature, Pressure, Density, Peak
Demand, Demand Last Hour

• Pulse Output

Heat, Mass or Volume Total

• Relay Outputs

Heat, Mass or Volume Flow Rate , Total, Pressure, Temperature Alarms, Peak
Demand, Demand Last Hour

Flow, temperature and pressure

Flow, temperature or pressure

Steam Heat
Illustration

Calculations

Applications:

Monitoring heat flow and total heat of steam. Flow alarms are provided via relays and
datalogging is available via analog (4-20mA) and serial outputs.

TOTAL

2

1

GRAND6SCROLL7PRE 28DENS

Pressure

Transmitter

3

Flowmeter Temperature

CLEAR•MENU

5

4

9

HELP

TIME

0

–

Transmitter

* or Steam Trap Monitor

ENTER

*

PRINT

TEMP

PRE 1

RATE

Heat Flow

Heat Flow = Volume flow • density (T, p) • Sp. Enthalpy of steam (T, p)

22

SP4000 Flow Computer

STEAM NET HEAT

3.11 Steam Net Heat

Measurements:

A flowmeter measures the actual volume flow in a steam line. A temperature and a
pressure sensor are installed to measure temperature and/or pressure. All measurements
are made on the steam side of a heat exchanger.

Calculations:

• Density, mass flow and net heat flow are calculated using the steam tables stored in
the flow computer. The net heat is defined as the difference between the heat of the
steam and the heat of the condensate. For simplification it is assumed that the
condensate (water) has a temperature which corresponds to the temperature of
saturated steam at the pressure measured upstream of the heat exchanger.

• Saturated steam requires either a pressure or temperature measurement with the
other variable calculated using the saturated steam curve.

• Optional steam trap monitoring using compensation input.

Input Variables:

Superheated Steam:
Saturated Steam:

Output Results:

• Display Results

Heat, Mass or Volume Flow Rate, Resettable Total, Non-Resettable Total,
Temperature, Pressure, Density, (optional: peak demand, demand last hour,
time/date stamp)

• Analog Output

Heat, Mass or Volume Flow Rate, Temperature, Pressure, Density, Peak
Demand, Demand Last Hour

• Pulse Output

Heat, Mass or Volume Total

• Relay Outputs

Heat, Mass or Volume Flow Rate , Total, Pressure, Temperature Alarms, Peak
Demand, Demand Last Hour

Flow, temperature and pressure

Flow, temperature or pressure

Steam Net Heat
Illustration

Calculations

Applications:

Monitoring the thermal energy which can be extracted by a heat exchanger taking into
account the thermal energy remaining in the returned condensate. For simplification it is
assumed that the condensate (water) has a temperature which corresponds to the
temperature of saturated steam at the pressure measured upstream of the heat exchanger.

Water

PRINT

TEMP4PRE 13RATE2TOTAL

CLEAR•MENU

1

GRAND6SCROLL7PRE 28DENS

Net Heat Flow

Pressure

Transmitter

Flowmeter Temperature

Net Heat Flow = Volume flow • density (T, p) • [ED (T, p)– EW (T
E

= Specific enthalpy of steam

D

E

= Specific enthalpy of water

w

T

= Calculated condensation temperature

S(p)

(= saturated steam temperature for supply pressure)

5

HELP

TIME

ENTER

0

9

–

Transmitter

* or Steam Trap Monitor

Steam

*

)]

S(p)

23

SP4000 Flow Computer

STEAM DELTA HEAT

3.12 Steam Delta Heat

Measurements:

Measures actual volume flow and pressure of the saturated steam in the supply piping
as well as the temperature of the condensate in the downstream piping of a heat
exchanger.

Calculations:

• Calculates density, mass flow as well as the delta heat between the saturated steam
(supply) and condensation (return) using physical characteristic tables of steam and
water stored in the flow computer.

• The saturated steam temperature in the supply line is calculated from the pressure
measured there.

Input Variables:

Supply:
Return:

Output Results:

• Display Results

• Analog Output

• Pulse Output

• Relay Outputs

Flow and pressure (saturated steam)
Temperature (condensate)

Heat, Mass or Volume Flow Rate, Resettable Total, Non-Resettable Total,
Temperature, Pressure, Density (optional: peak demand, demand last hour,
time/date stamp)

Heat, Mass or Volume Flow Rate, Temperature, Pressure, Density, Peak
Demand, Demand Last Hour

Heat, Mass or Volume Total
Heat, Mass or Volume Flow Rate , Total, Pressure, Temperature Alarms, Peak

Demand, Demand Last Hour

Steam Delta Heat
Illustration

Calculations

Applications:

Calculate the saturated steam mass flow and the heat extracted by a heat exchanger
taking into account the thermal energy remaining in the condensate.

Temperature

Transmitter

Water

PRINT

TEMP4PRE 13RATE2TOTAL

CLEAR•MENU

1

GRAND6SCROLL7PRE 28DENS

Pressure

Transmitter

9

5

TIME

0

–

Flowmeter

HELP

ENTER

Saturated
Steam

Delta Heat Flow

Net Heat Flow = Volume flow • density (p) • [ED (p)– EW (T)]
E

= Specific enthalpy of steam

D

E

= Specific enthalpy of water

w

Note: Assumes a closed system.

24

4. WIRING

SP4000 Flow Computer

4.1 Terminal Designations

Two Relay Terminations Three Relay Option Terminations

1

1

DC OUTPUT

2

PULSE IN

- - - - - - - - - -

3
4

COMMON

5

RTD EXCIT (+)
RTD SENS (+)

6

RTD SENS (-)

7

DC OUTPUT

8
9

RTD EXCIT (+)
RTD SENS (+)

10

RTD SENS (-)

11

PULSE OUTPUT (+)

12
13

PULSE OUTPUT (-)
ANALOG OUTPUT 1 (+)

14
15

ANALOG OUTPUT 2 (+)

16

ANALOG OUTPUT COMMON (-)

Vin (+)
Iin (+)

TEMPERATURE

Iin (+)

Iin (+)

FLOW

IN

IN

**

PRESSURE

(TEMP 2)

IN

DC OUTPUT

2

PULSE IN

- - - - - - - - - -

3
4

COMMON

5

RTD EXCIT (+)
RTD SENS (+)

6

RTD SENS (-)

7

DC OUTPUT

8
9

RTD EXCIT (+)
RTD SENS (+)

10

RTD SENS (-)

11

PULSE OUTPUT (+)

12
13

PULSE OUTPUT (-)
ANALOG OUTPUT 1 (+)

14
15

ANALOG OUTPUT 2 (+)

16

ANALOG OUTPUT COMMON (-)

Vin (+)
Iin (+)

TEMPERATURE

Iin (+)

Iin (+)

FLOW

IN

IN

**

PRESSURE

(TEMP 2)

IN

17 NO
18 COM
19

20
21
22

23

In trap monitor mode, terminal 7 is used for Iin (+) from trap monitor.

**

RLY1

NC
NC

COM

RLY2

NO
AC LINE

AC LINE24

DC (+)
DC (-)

POWER IN

17 N.O.
18 COM.
19

N.O.
20
21

N.O.
22

23

AC LINE

AC LINE24

RLY1
RLY1
RLY3
RLY3COM.

RLY2
RLY2COM.

DC (+)
DC (-)

POWER IN

25

4.2 Typical Wiring Connections:

4.2.1 Flow Input

SP4000 Flow Computer

(i.e. SP714, SP717 Flowmeter)

3-30 VDC Pulses

10 mV Signal

(i.e. Turbine Flowmeter

with Magnetic Pickup)

Analog 4-20 mA Transmitter

(i.e. F/I Converter,

SP712, SP720-2)

Analog Voltage T ransmitter

(i.e. Turbine Flowmeter

with F/V Converter, SP711-3)

Pulse
3-30 V

Mag
10 mV

4-20
mA

0-5
VDC

+

–

–

+

–

+

–

1

(+) 24 V Out

2

Pulse In
3
4

Common

1

Pulse In

2
3

Common

4

1

(+) 24 V Out
2
3

4-20 mA In

1

(+) V In

2
3

Common

4

4.2.2 Pressure Input

4-20 mA Pressure

Transmitter

4-20
mA

8

(+) 24 V Out

+

–

9

10

11

4-20 mA In

26

4.2.3 Temperature Input

SP4000 Flow Computer

RTD Connections
2, 3 & 4 wire RTD's

2-Wire

RTD

3-Wire

RTD

4-Wire

RTD

4-20 mA Temperature

Transmitter

* Or optional steam trap monitoring input in some saturated

steam applications.

4.2.4 Temperature 2 Input

4-20
mA

RTD Excitation (+)

5

RTD Sense (+)

6

RTD Sense (–)

7

5

RTD Excitation (+)

6

RTD Sense (+)

7

RTD Sense (–)

5

RTD Excitation (+)

6

RTD Sense (+)

7

RTD Sense (–)

–

7

4-20 mA In

8

+

(+) 24 V Out

*

RTD Connections
2, 3 & 4 wire RTD's

4-20 mA Temperature

Transmitter

2-Wire

RTD

3-Wire

RTD

4-Wire

RTD

4-20
mA

RTD Excitation (+)

9

RTD Sense (+)

10

RTD Sense (–)

11

RTD Excitation (+)

9

RTD Sense (+)

10

RTD Sense (–)

11

RTD Excitation (+)

9

RTD Sense (+)

10

RTD Sense (–)

11

8

(+) 24 V Out

+

–

9
10
11

4-20 mA In

27