Liquid Controls SP3000 User Manual

INSTALLATION & INSTRUCTION

MANUAL

SP3000

FLOW COMPUTER

DOC#: MN-3000.DOC

- W A R N I N G -

This instrument contains electronic components that are susceptible to damage by static electricity. Please observe the following handling procedures during the removal, installation, or handling of the internal circuit boards or devices.

HANDLING PROCEDURES

1.Power to unit must be removed.

2.Personnel must be grounded, via wrist strap or other safe, suitable means, before any printed circuit board or other internal device is installed, removed, or adjusted.

3.Printed circuit boards must be transported in a conductive bag or other conductive container. Boards must not be removed from protective enclosure until the immediate time of installation. Removed boards must be placed immediately in protective container for transport, storage, or return to factory.

COMMENTS

This instrument is not unique in its content of EDS (electrostatic discharge) sensitive components. Most modern electrical designs contain components that utilize metal oxide technology (NMOS, CMOS, etc.). Experience has proven that even small amounts of static electricity can damage or destroy these devices. Damaged components, even though they appear to function properly, exhibit early failure.

*** SPONSLER, INC. STRONLY RECOMMENDS THOROUGH UNDERSTANDING AND REVIEW OF THIS MANUAL PRIOR TO INSTALLATION.

2

	TABLE OF CONTENTS
INTRODUCTION		4
1.1	GENERAL DESCRIPTION	4
1.2	FEATURES	4
1.3	APPLICATION	5
1.4	GENERAL SPECIFICATIONS	6
1.5	INPUT SPECIFICATIONS	6
	1.51 ANALOG INPUTS	6
	1.52 RTD TEMPERATURE INPUTS	7
	1.53 DIGITAL FLOW INPUT	7
1.6	OUTPUT SPECIFICATIONS	8
	1.61 ANALOG OUTPUT	8
	1.62 DIGITAL FLOW PULSE OUTPUT	8
	1.63 RELAY OUTPUTS	9
	1.64 AUXILIARY POWER OUTPUT	9
1.7	RS-232 COMMUNICATIONS PORT	9
1.8	DATA DISPLAY AND KEYPAD	10
INSTALLATION		10
2.1	MOUNTING THE INSTRUMENT	10
2.2	CONNECTING INPUTS AND OUTPUTS	11
PROGRAMMING CONSIDERATIONS		18
3.1	FRONT PANEL KEYPAD OPERATION	19
3.2	SETTING COMPUTATIONS	20
3.3	SELECTING THE ENGINEERING UNITS	22
3.4	SETTING THE HARDWARE	22
3.5	SETTING THE VARIABLES	24
	3.51 SETTING THE PRESSURE VARIABLES	24
	3.52 SETTING THE TEMPERATURE VARIABLES	25
	3.53 SETTING THE FLOW VARIABLES	26
	3.54 FLOWCHART: DIGITAL PULSE-LINEAR	26
	3.55 FLOWCHART: DIGITAL PULSESIXTEEN POINT	27
	3.551 DIGITAL PULSE – SIXTEEN POINT PROGRAMMING	28
	3.552 PROGRAMMING EXAMPLE	29
3.6	ANALOG LINEAR INPUT SETTINGS	31
	3.61 ANALOG 16 POINT INPUT SETTINGS	32
3.7	ANALOG ORIFICE/PITOT INPUT SETTINGS	33
3.8	SETTING THE FLOW OUTPUT VARIABLES	34
CLEARING THE TOTALIZER: RESETTING THE TOTALIZER TO 0.000		34
CHECKING THE ALARM: VIEW THE MOST RECENT ALARM CONDITION		36
REAL TIME CLOCK		39
RUNNING MODE		40
8.1	SHOW DATA	41
	8.1.1DISPLAY DATA SETUP	41
8.2	PRINT LIST (RS-232 OPTION)	42
8.3	PRINT SYSTEM SETUP (RS-232 OPTION)	42
8.4	EXAMINE HARDWARE	43
8.5	EXAMINE COMPUTATIONS	43
8.6	EXAMINE VARIABLES	43
8.7	CHECK ALARM	44
8.8	LOCK/UNLOCK	45
PRINCIPLES OF OPERATION		46
9.1	GENERAL	46
9.2	TEMPERATURE CALCULATIONS	46
9.3	PRESSURE CALCULATIONS	46
9.4	FLOW CALCULATIONS	46
Appendix i		48
Appendix ii		51
Appendix iii		51
Appendix iv		52
Appendix v Troubleshooting Guide		52
RS-232 OPERATING INSTRUCTIONS		53

3

MODEL SP3000 MASS FLOW COMPUTER

INTRODUCTION

1.1GENERAL DESCRIPTION

The Model SP3000 is a microprocessor based instrument designed to measure and compensate flow in an industrial environment. Three inputs - temperature, pressure, and flow – are provided for calculating the flow at standard conditions. Special signal conditioning circuitry is included to allow direct connection of 2, 3, or 4 wire platinum Resistance Temperature Detectors (RTDs), voltage inputs or current loops. A high speed digital input is provided for interfacing with the meter mounted SP714 Pulse Amplifier. A 32 terminal strip on the rear panel provides easy connection to the instrument.

The Model SP3000 is powered by 50 or 60 Hz, 110 or 220 VAC, switch selectable, or can be ordered for 24 VDC power.

The Model SP3000 is designed to provide continuous, on-line, compensation for true flowrate from volumetric flow transducers. All volumetric, mass, or heat flow calculations are taken with

permission from the Flow Measurement Engineering Handbook written by R.W. Miller. Steam (100% quality, saturated, or superheated to 850o F) computations are based on the 1967 ASME Steam tables.

Operator interface is through a 16 key keypad and a 2 line by 20 character liquid crystal display. (The Model SP3000 may also be set up entirely through the optional RS-232 port). Range selection, input filtering characteristics, scaling factors, etc. are selected through the front panel keypad or RS-232 interface. There is no need to disassemble the unit or set any dip switches.

Scaled digital and 4-20mA analog current outputs, that represent compensated flow, are standard for use in remote monitoring of flow. Two form C relays provide isolated flow or temperature/pressure alarm outputs.

There is a single precision voltage reference in the unit used for all analog measurements. A single multi-turn potentiometer is provided for factory calibration. No field adjustments are necessary.

1.2FEATURES

The Model SP3000 is designed to provide accurate and low cost compensated flow measurement for industrial applications. The instrument can be set up to display volumetric, mass, or heat flow, as well as totalized flow, with an overall accuracy of 0.25%.

Fully programmable from the front keypad, the microprocessor-based Model SP3000 Flow Computer provides the operator with prompts to set up the operating parameters of the instrument.

The Flow Computer offers the following features:

* Front Panel 16 key programming keypad		* Non-volatile RAM memory
*	2 line 20 character liquid crystal display	*	Self diagnostics of instrument
*	Compensates gas & steam flowrates for	*	Supervisory lockout of keypad
temperature and pressure		* Provides 24 VDC excitation at 100mA
*	Compensates liquid flowrates for temperature	*	English and metric engineering units selectable via
*	Direct input of 100 ohms RTD	front keypad
*	Can display flow and heat flowrates and totals	*	Flowrate and temperature/pressure alarms via two
*	Scaleable 5V output pulse	SPDT relays
*	Analog output of 4-20mA proportional to	*	Real time clock and calendar (not battery backed)
compensated flowrate		*	Optional 16 point linearization of input signal
*	12 bit input resolution for A/D conversion	*	Optional RS-232 communications

4

1.3APPLICATION

SP714 PULSE

AMPLIFIER

PRESSURE	100 OHMS RTD
TRANSDUCER

P

	FLOWMETER
		SP3000
		MASS FLOW
	BELL	COMPUTER
LIGHT	Alarm Outputs

RS232 Output

Pulse Output

1	2 3 4 5 6		*
	REMOTE	4-20mA Output	PRINTER
	TOTALIZER

*Pressure Transducer sends 4-20mA signal to Model SP3000

*100 ohms RTD direct hook-up to Model SP3000

*Meter Mounted SP714 Pulse Amplifier sends digital signal to Model SP3000

*Model SP3000 calculates flow and sends out signals

*5V pulse out to remote totalizer in supervisory area

*4-20mA out to stripchart recorder tracks trends

*RS-232 out to printer for data logging

*Alarm relays activate bell and/or light as needed

5

1.4GENERAL SPECIFICATIONS

Operating Temperature:	32o to 122o F (0o to 50o C)
Storage Temperature:	-10o to 160o F (-32o to 71o C)
Humidity:	0 to 90% Non-Condensing
Front Bezel:	NEMA 4X
Case:	ABS Plastic
Dimensions:	See page 2-1, fig 2-1
Voltage:	115 or 230 VAC +/- 15% (Switch Selectable)
	50/60 Hz, 24 VDC +/- 20%
Power Consumption:	10 Watts max.

1.5INPUT SPECIFICATIONS

The following applies to all inputs in all modes. Inputs are referenced to the signal ground. All ground terminals are connected internally. The exception is the RTD input which is differential but is referenced to ground.

Transient Protection:

100V 5nsec

Note: In the event of the specified fault conditions, unit may temporarily malfunction, but no permanent damage will occur.

1.51ANALOG INPUTS

Temperature, Pressure, and Flow (1 each)

*Current Input

Input Impedance:	100 ohms
Range:	0-20mA, 4-20mA
Maximum sustained input voltage:	5VDC (Fault Condition)
22.9 K
13	A/D
100	1.5 F
14
Typical Current Input Schematic:

*Voltage Input

Input Impedance:		100K ohms
Range:		0-5V, 0-10V
		92 K
	12	A/D

1.5 F

11

Typical Voltage Input Schematic:

6

3-30 VDC Pulse

Dry contact, opto-isolated or

voltage source 40kHz

10µsec (with 40kHz filter) OFF is less than 2.0V/ ON is

greater than 2.5V

Less than 30K ohms to ground 5VDC through 5.6K ohms resistor

100K

1.5 F

4

3

1.52RTD TEMPERATURE INPUTS

Compatible RTD type:	100 ohms Platinum
(a=0.00385; DIN 43-760 Calibration)
Configuration:	2, 3, or 4 wire
Excitation Current:	2mA typical
Max Fault Current:	15mA
Max Voltage on Sense Inputs:	50 VDC
Rejection of 50-60Hz signal:	40 dB (minimum)
(Automatically based on line frequency)
Raw Accuracy:	0.2% FS RTI
Temperature Range:	-323.5o to +1378.7o F
	(-197.5o to +748.1o C)

Typical RTD Schematic:

1 2.2 VDC @ 2mA 20K

2

1.5 F	A/D ~

20K

1.53DIGITAL FLOW INPUT

Range:

Type:

Max Input Frequency:

Min. Pulse Width:

Thresholds:

Input Impedance:

Excitation Voltage:

Min. Frequency to maintain rate display: 1 Hz

Note: Totalizer counts all pulses down to 0 Hz

Typical Digital Pulse Input & Schematic:

5 VDC
@ 0.9 mA	5.6 K

16 +5 VDC

	+5 VDC
39 K
17
100 K	1.5	COUNTER
		F
18

7

1.6	OUTPUT SPECIFICATIONS
	1.61 ANALOG OUTPUT
	Number:	1
	Range:	4-20mA DC, sink only
	Compliance Voltage Range:	3.0-24 VDC
	Load Type:	Non-Inductive
	Accuracy:	+/- 100 µA
	Update Rate:	1 Hz

Analog Output Schematic:

19

CPU

A/D ~ 100

18

1.62DIGITAL FLOW PULSE OUTPUT

This output is intended to drive a counter with a minimum input impedance of 1000 ohms. It is also compatible with TTL, LSTTL, and 5V CMOS logic inputs. It is slew rate limited to help prevent RFI.

Number:		1
Output High Voltage No Load: 4.5 Volts min.
4.0mA source:	4.5 Volts min.
Output Low Voltage No Load: 0.2 Volts max.
4.0mA sink:		1.0 Volts max.
Output Waveform:		Symmetric square wave above 1Hz
		100msec pulse below 1Hz
Max Output Slew Rate:	27 Volts/µsec
Sustained Fault Voltage for
no permanent damage: 7 Volts
Transient Protection:	1500V	50µsec
Pulse Output Schematic:
	1.5	+ 5 VDC
		F	3.3 K
			3.3 K
	220
TTL 5 VDC
@ 21mA	220
20			3.3 K
	.001	F		CPU
21

8

1.63RELAY OUTPUTS

One relay is provided as a flow alarm and a second is provided for the other alarm conditions. Each has the following specifications:

Type:	Dry contact, Form C
Contact Rating:	10A at 115/230 VAC/28 VDC

Typical Relay Output Schematics:

22

23

24

1.64AUXILIARY POWER OUTPUT

Voltage:	24 VDC regulated and filtered
Isolation:	230	VAC max
Current:	0 to	100 mA
Protection:	Short Circuit Proof

1.7RS-232 COMMUNICATIONS PORT

(Refer to RS-232 Addendum supplied with RS-232 option)

Connector:

25 Pin Sub-D

Input Impedance:

3000 ohms to 7000 ohms

Compliance Voltage:

Output: -25 to –5 (Mark); 5 to 25 (Space); Volts

Input:

-25 to –3 (Mark); 3 to 25 (Space); Volts

Protection:

Short Circuit Proof

Protocol:

8 bits, 1 stop bit

Parity:

None (Not Monitored)

Available Baud Rates:

300, 1200, 9600

RS-232 Connector Pin Out:

Ground (7)

Transmit (3)

Printer Busy (11)

Recieve (2)

13

12

11 10

9

8

7

6

5

4

3

2

1

25 24 23 22 21 20 19 18 17 16 15 14

Pins 6, 8, and 20 are jumpered together

Pins 4 and 5 are jumpered together

9

1.8DATA DISPLAY AND KEYPAD

Internal 2 line by 20 character dot matrix LCD display. Sealed, 16 key panel featuring numeric keys 0-9, plus the following keys:

A	Advance through menus
B	Back up through menus
C	Cancel current menu selection
D	Decimal point key
ENT	General purpose enter or recall data key
CLR	Data clear key

INSTALLATION

2.1MOUNTING THE INSTRUMENT

The Model SP3000 can be mounted in a user panel greater than 0.047” (1.2mm) and less than 0.187” (4.7mm) thick. Figure 2-1 shows the cutout dimensions, bezel size, and depth needed for the instrument. Be sure to provide additional space for cabling and connections behind the instrument (approximately 1.0”). Additionally, all wiring to the back of the instrument should have sufficient service loops to allow for the easy removal of the instrument from the panel.

Slip the gasket provided over the rear of the instrument case and slide it forward until it engages the inner surface of the front bezel, slide the instrument into the panel opening. Install the screws provided in the mounting brackets and insert in the slots located on all four sides of the instrument. Tighten the screws to firmly secure the bezel and gasket up against the panel.

CAUTION: Do not over tighten mounting screw brackets

7.349 (186.7)

7.055 (179.2)

7.365 +/- .010

(187.0 +/- .25)

2.495 +/- .010

(63.4 +/- .25)

PANEL CUTOUT DIMENSIONS

				1	2	3
				4	5	6	3.305	2.480
				7	8	9	(83.9)	(62.9)
A	B	C	D	E	0	C
		8.170	(207.5)				.525	6.000 (152.4)
							(13.5)

Figure 2-1

Dimensional Layout

10

2.2CONNECTING INPUTS AND OUTPUTS

Make sure all power is disconnected before making any electrical connections. All connections are completed at the rear terminal strips as indicated in the external wiring diagram. If cables are in areas with heavy electrical fields, shielding will be required for noise immunity. One end of the shielding should be connected to earth ground. Figures 2-2 though 2-9 show the input, output and power wiring locations for the 32 point terminal block on the back of the instrument.

PIN	RTD		VOLTAGE IN		CURRENT IN		FUNCTION
1	RTD EXCITATION +		-------------------------		----------------------
2	RTD SENSE +		-------------------------		----------------------
3	RTD SENSE –		-------------------------		----------------------		CHANNEL 1
4	RTD EXCITATION –		V-------------------------IN – (GND)		I IN +		TEMPERATURE
5	GROUND (SHIELD)				I IN – (GND)
6	----------------------------		V IN +		----------------------
7	RTD EXCITATION +
8	RTD SENSE +
9	RTD SENSE –		-------------------------		----------------------		CHANNEL 2
10	RTD EXCITATION –		-------------------------		I IN +		PRESSURE OR
11	GROUND (SHIELD)		V IN – (GND)		I IN – (GND)		AUX TEMP
12	----------------------------		V IN +		----------------------
13	----------------------------		-------------------------		I IN +		CHANNEL 3
14	GROUND (SHIELD)		V IN – (GND)		I IN – (GND)		FLOW
15	----------------------------		V IN +		----------------------		ANALOG INPUT
16	EXCITATION VOLTAGE (5.6K Ω PULLUP TO 5 VDC)						CHANNEL 3
17	PULSE INPUT (3-30 VOLTS)						FLOW
18	GROUND (SHIELD)						ANALOG INPUT
19	ANALOG OUTPUT (SINK)						ANALOG OUT 4-20mA
20	PULSE OUTPUT						5 V SCALED
21	GROUND (SHIELD)						PULSE OUTPUT
22	N.O.
23	N.C.						ALARM RELAY
24	COMMON
25	N.O.
26	N.C.						FLOW ALARM
27	COMMON						RELAY
28	115/230 VAC 50/60 HZ						POWER (AC)
29	115/230 VAC 50/60 HZ
30	+24 VOLTS ISOLATED		Output available			+24 VDC IN	Power input for
31	24 VOLTS RTN		on AC Powered Units			-- DC (GND)	DC Powered Units
32	CHASSIS GROUND

Figure 2-2

Terminal Designation Label

11

POWER D1

SP714 REV B

TEST

OUTPUT SIGNAL

S1 SENS (JU1 INSTALLED)D2

R1	1	2	3	4	5
J1
					- DC (GND)
	+	-			SIGNAL OUT +
	SIG IN	SIG IN
				+24 VDC
	A	B

PICKUP COIL

FLOW COMPUTER

				17	PULSE INPUT
				18	GROUND (SHIELD)
					+ 24 V
				30
				31	24 V RETURN
				32	CHASSIS GROUND

PULSE INPUT CONNECTION

SP717 REV A

D1

OUTPUT SIGNAL

(JU1 INSTALLED) D2

1

2

3

4

5

J1

				- DC (GND)
	+	-	SIGNAL OUT +
	SIG IN	SIG IN
			+24 VDC
	A	B

PICKUP COIL

	FLOW COMPUTER
	17	PULSE INPUT
	18	GROUND (SHIELD)
	30	+ 24 V
	31	24 V RETURN
	32
		CHASSIS GROUND
	PULSE INPUT CONNECTION

Figure 2-3

SP714 & SP717 Pulse Amplifiers Wiring Diagram

12

	1
	2	RTD SENSE +
	3	RTD SENSE -
	4	RTD EXCITATION -
	5	GROUND (SHIELD)

2 WIRE CONNECTION

	1	RTD EXCITATION +
	2	RTD SENSE +
	3	RTD SENSE -
	4	RTD EXCITATION -
	5	GROUND (SHIELD)

3 WIRE CONNECTION

	1	RTD EXCITATION +
	2	RTD SENSE +
	3	RTD SENSE -
	4	RTD EXCITATION -
	5	GROUND (SHIELD)

4 WIRE CONNECTION

RTD WIRING DIAGRAMS

FLOW COMPUTER

4-20mA T/C

TRANSMITTER

	4			I IN +
	5			GROUND (SHIELD)
				V IN +
	6
		30		+ 24 V
	31			24 V RETURN
	32			CHASSIS GROUND

TEMPERATURE TRANSMITTER

4-20mA CONNECTION

Figure 2-4

Temperature Transmitter Input Wiring Diagrams

13

	4-20Ma PRESSURE
	TRANSMITTER
	-	10
		11
	-
		12
	+	32 31 30

FLOW COMPUTER

I IN +

GROUND (SHIELD) V IN +

+ 24 V

24 V RETURN CHASSIS GROUND

4-20mA CONNECTION

5 VOLT PRESSURE TRANSMITTER

32 31 30 12 11 10

FLOW COMPUTER

I IN +

GROUND (SHIELD) V IN +

+ 24 V

24 V RETURN CHASSIS GROUND

0-5 VOLT CONNECTION

Figure 2-5

Pressure Transmitter

Analog Input Wiring Diagrams

14

STRIP CHART

RECORDER

-

+

FLOW COMPUTER

	19	SINK (4-20mA)
	20	PULSE OUT
	21	GROUND (SHIELD)
		+ 24 V
	30
	31	24 V RETURN
	32	CHASSIS GROUND

ANALOG OUTPUT CONNECTION

Figure 2-6

Analog Output Wiring Diagram

REMOTE ELECTRONIC

COUNTER

12345678	+
	-

FLOW COMPUTER

	19	SINK (4-20mA)
	20	PULSE OUT
	21	CHASSIS GROUND

PULSE OUTPUT CONNECTION

Figure 2-7

Pulse Output Wiring Diagram

15

Figure 2-8: Wiring Diagram-2-wire Probe

16

Figure 2-8: Wiring Diagram-2-wire Probe

17

PROGRAMMING CONSIDERATIONS

Programming the SP3000 Flow Computer for the desired operation is very simple. All programming selections and data entry are accomplished via the 16 keys located and labeled on the front panel. The software in the unit contains two Top Level Menus: “Setup” Menu and “Running” Menu. The “Setup” Menu allows the selection of operating parameters and entry of data variables. The “Computation” selection sets the formulas used to process the raw input data into meaningful information. The “Engineering Units” selection establishes the measuring system that is used for entry and display of the data. The “Hardware” selection sets the type of input data and activates the proper input terminals on the rear of the unit. The unit will automatically determine the setup parameter requirements based on the “Computation” and “Hardware” selections. Prompts are displayed for entry of the required data as the operator progresses through the setup menu. To aid in the setup, a calibration worksheet is provided. Fill out the worksheet before beginning setup. Review this section for setup procedures and follow the worksheet for data to be entered.

The “Running” menu allows the setup of the data display and examination of the programmed operating parameters. The parameters may not be changed in the “Running” menu.

Either menu allows checking the alarm, clearing the totalizer, or accessing the lock.

Structural Division of the two Top Level Menus:

SETUP MODE

Sponsler V6.13 MS197

Run?

Set Computations?

Engineering Units?

Set Hardware?

Set Variables?

Clear Totalizer?

Check Alarm?

Lock/Unlock?

Real Time Clock?

Serial Interface?

Run? Allows crossover from Setup to Run

When in this mode, the operating parameters of the instrument may be set up or changed

RUNNING MODE

Running...

Show Data?

Go To Standby?

Setup Data Display?

Setup Print List?

Print System Setup?

Clear Totalizer?

Examine Hardware?

Examine Comps?

Examine Variables?

Check Alarm?

Lock/Unlock?

Go To Standby? Allows crossover from Run to

Setup

When in this mode, the operating parameters may be examined, but no changes may be made

In either mode, check alarm, clear totalizer, or the lock may be accessed.

NOTE: Locking the unit in either mode prevents crossover to the other mode.

18

3.1FRONT PANEL KEYPAD OPERATION

Programming is accomplished via the 16 keys labeled and located on the front panel.

SPONSLER CO., INC.			SP3000
Sponsler V6.13 MS197				1	2	3
Run?				4	3	6
ADVANCE	BACKUP	CANCEL	DEC PT	7	8	9
A	B	C	D	ENT	0	CLR

The function of each key is described below:

ADVANCE

AAdvances to the next item in the menu or sub-menu. If the last item in the menu is displayed, pressing this button will have no effect on the display. The display will not wrap around to the top of the menu.

BACKUP

BBacks up to the previous item on the menu or sub-menu. If the first item in the menu is displayed, pressing this button will have no effect on the display. The display will not wrap around to the

bottom of the menu.

CANCEL

CCancels current operation and goes back to the top of the menu or sub-menu. From any point in the menu structure, pressing “Cancel” twice will always return to Run? Or Show Data? Option.

DEC. PT.

D

0

THRU

9

CLR

ENT

Inserts a decimal point in the numerical value being entered.

Keys used to enter numbers. Numerical values appear from left to right as keys are pressed.

When entering numerical values, pressing this key will erase the last digit typed. If a previously entered value is displayed, pressing this key will erase the entire value.

Enters a selection or displayed value. If a parameter prompt is displayed, pressing this key will display the value presently in memory. If there is no default or previously stored value, an error message will be displayed.

NOTE: The unit must be in the “Setup” mode to program or change operating parameters. On power up, the unit will return to the mode in which it was operating when power was removed. If the unit was operating in the “Running” mode, the unit will display operating data on the power up. To enter the “Setup” mode:

19

DISPLAY SHOWS

Operating Data Scroll

Running...

Show Data?

Running...

Go to Standby?

Sponsler V6.13 MS197

Run?

PRESS

A

A

ENT

(This display indicates that the unit is in the “Setup” mode. If the unit was in the “Setup” mode when the power was removed, the unit will return to this display on power up)

The function keys allow entry to the menus and sub-menus for selecting operating options or entering numerical parameters.

Press	A	To advance a menu or sub-menu
Press	B	To backup a menu or sub-menu
Press	ENT	To access a menu or sub-menu
Press	ENT	To select a displayed option. When an option has
		been selected, the unit will automatically advance to
		the next menu item
Press	ENT	To view the previously entered value at any data entry
		point.
Press	ENT	To erase the last digit typed or to erase a previously
		entered value
Press	C	To cancel current operation and return to the top of the
		menu or sub-menu. From any point in the menu
		structure, pressing	C	twice will return to the top of
		the Top Level Menu

3.2SETTING COMPUTATIONS

The computation selects the formulas that are used to process the raw input data into meaningful information. Section 9 details the formulas used in each computation.

Flow Computation Selection and Applications

Ideal Gas – Volume:	uses volume, temperature and pressure to yield a compensated
	Volumetric flow rate displayed in SCFM (Nm3/h) and total in SCF
	(Nm3)
Ideal Gas – Mass:	uses volume, temperature to yield a compensated a Mass flow
	rate displayed in lbm/h (kg/h) and total lbm (kg)
Steam Tables – Mass:	uses volume and temperature and/or pressure to yield a
	compensated Mass flow rate displayed in lbm/h (kg/h) and total in
	lbm (kg). The unit may be set up to follow saturated steam curve;
	see SPECIAL NOTE on page 3-9. (Steam tables are saturated 1
	PSIA to 3200 PSIA with super heated values up to 900oF. Higher
	temperatures cause an alarm condition).

20