Greyline Instruments Tank Farm Transmitter TFT32 User Manual

USER’S GUIDE

Installation & Operation

Instructions

Tank Farm Transmitter

Model TFT 32

Series 2.4

Pressure Sensor Input (-B-)

Note: This page has been left blank intentionally.

TFT32 Tank Farm Transmitter

Manual Series 2.4

INDEX

Bench Test and Connections·····································4
Calibration System ············································7
Calibration Menu ·············································8
Calibration Units Selection······································9
Output Span Calibration ········································10
Level Calibration ·············································11
Relay Calibration ·············································15
Damping ····················································16
Transmitter/Tank Address ······································16
Baud Rate ···················································17
Output Simulation·············································17
Store/Save Calibration ·········································17
Enclosure Installation ··········································19
Sensor Installation·············································20
Error/Warning Messages ·······································21
Communication Protocol ·······································22
Fuse Replacement ·············································24
Applications Hotline ···········································25
Product Return Procedure ·······································26
Warranty ···················································27
Conversion Tables ············································30
Specifications ················································31

IMPORTANT NOTE: This instrument is manufactured and calibrated to meet product specifications.
Please read this manual carefully before installation and operation. Any unauthorized repairs or
modifications may result in a suspension of the warranty.

Available in Adobe Acrobat pdf format

Page 3

TFT32 Tank Farm Transmitter

Manual Series 2.4

QUICK BENCH TEST (PRESSURE INPUT):

Connect Sensor as shown below, then apply Power. When properly connected figures will be shown on
the LCD display. Test operation of the TFT32 by applying pressure to the sensor or 4-20mA input. The
TFT32 will now display level in inches or cm.

CONNECTIONS:

POWER INPUT: The standard model requires DC power input between 15 to 24VDC with current
consumption of 120mA maximum. Power GND must be connected to a good “earth” ground for surge
protection.

RS485 NETWORK: Connections from the 485 network (other TFT32’s and the PC computer) are:
Data - (D*), Data + (D) and signal/shield ground (S.G.)

IMPORTANT NOTE: To comply with CSA/NRTL standards, power input and relay connection wires
must have a water tight fitting conduit entry to the instrument enclosure.

14 AWG MAX

24VDC

–

+

GND

IMPORTANT:
MUST CONNECT TO A
GOOD GROUND (<1 Ohm)
WITH 14 AWG CONDUCTOR

RELAY

(1 AMP)

CONNECT
TO RS485
NETWORK
CABLE

RS485

D

TO RS485
NETWORK

INPUT

*

18 - 22 AWG RECOMMENDED

mA

D

S.G

+-

BLK

RED

SENSOR

6 - CONDUCTOR SHIELDED

Page 4

LOCAL NETWORK CONNECTIONS

LAST (FURTHEST) TFT IN THE NETWORK

TFT32 Tank Farm Transmitter

Manual Series 2.4

24VDC

–

+

GND

120 ohm

TERMINATOR

IMPORTANT:
MUST CONNECT TO A
GOOD GROUND (<1 Ohm)
WITH 14 AWG CONDUCTOR

(supplied)

RELAY
(1 AMP)

TO RS485
NETWORK

INPUT

RS485

MORE
TFT'S

mA

*

+-

D

D

S.G

BLK

RED

DO NOT
CONNECT SHIELD

6 - CONDUCTOR SHIELDED

18 - 22 AWG RECOMMENDED

IMPORTANT:
MUST CONNECT TO A
GOOD GROUND (<1 Ohm)
WITH 14 AWG CONDUCTOR

SENSOR

24VDC

+

RELAY

–

GND

(1 AMP)

RS485

*

D

D

S.G

INPUT

mA

+-

RED

BLK

SENSOR

6 - CONDUCTOR SHIELDED

18 - 22 AWG RECOMMENDED

TO RS485
NETWORK

MORE
TFT'S

24VDC

+

RS485

*

D

INPUT

mA

D

S.G

+-

RELAY

–

GND

(1 AMP)

To

RS232

Port

485OI9TB-12V

DB9F

RS232

RS485

RS485/232

CONVERTER

D–
D+

GND
12V

DO NOT
CONNECT
SHIELD

IMPORTANT:
MUST CONNECT TO A
GOOD GROUND (<1 Ohm)
WITH 14 AWG CONDUCTOR

PS150 POWER SUPPLY

S+

V+

V+

V+

V-

V-

NL

115VAC

S-

V-

BLK

RED

SENSOR

6 - CONDUCTOR SHIELDED

18 - 22 AWG RECOMMENDED

TO RS485
NETWORK

D*
D

GND

24V+
24V-

SHIELD

Page 5

DIAL-UP LOCATION CONNECTIONS

LAST(FURTHEST)TFT IN THE NETWORK

TFT32 Tank Farm Transmitter

Manual Series 2.4

24VDC

–

+

GND

120 ohm

TERMINATOR

IMPORTANT:

(supplied)

MUST CONNECT TO A
GOOD GROUND (<1 Ohm)
WITH 14 AWG CONDUCTOR

RELAY
(1 AMP)

TO RS485
NETWORK

RS485

INPUT

mA

*

+-

D

D

S.G

BLK

RED

DO NOT
CONNECT SHIELD

6 - CONDUCTOR SHIELDED

18 - 22 AWG RECOMMENDED

MORE
TFT'S

IMPORTANT:
MUST CONNECT TO A
GOOD GROUND (<1 Ohm)
WITH 14 AWG CONDUCTOR

24VDC

–

+

SENSOR

GND

RELAY
(1 AMP)

TO RS485
NETWORK

MORE
TFT'S

INPUT

RS485

D

mA

*

+-

D

S.G

BLK

RED

SENSOR

6 - CONDUCTOR SHIELDED

18 - 22 AWG RECOMMENDED

MODEM

DB25M

NULL

MODEM

485OI9TB-12V

DB9M

DB9F

RS232

CONVERTER

RS485

RS485/232

D–
D+

GND
12V

DO NOT
CONNECT
SHIELD

PS150 POWER SUPPLY

S+

V+

V+

V+

V-

V-

V-

NL

115VAC

D*
D

GND

S-

24V+
24V-

SHIELD

Page 6

TFT32 Tank Farm Transmitter

Manual Series 2.4

KEYPAD SYSTEM

The TFT32 has a simple 2-key calibration system. Operating and calibration modes are shown on the 4
digit display. The keys are used to calibrate the TFT32, and to view operating mode and functions. If the
keys are not used for 10 minutes, the TFT32 will automatically go to NORMAL MODE. Except in
OUTPUT SIMULATION mode, the Relay and RS485 serial output are not affected by use of the keys
until your calibration is stored.

PERCENT INCHES CM

mA

RELAY

4-DIGIT LCD DISPLAY

CALIBRATION KEYS

TFT32

Tank Farm Level Transmitter

POWER
CONNECTION

+ –

GND

SENSOR
CONNECTION

RS485 NETWORK
CONNECTION

MENU - FLOW CHART

The following diagram shows the TFT32 Menu system. Arrows show the directions to leave a box.
Pressing a corresponding key will move to the next box in the direction shown. Numeric values are
changed by pressing and holding the Ç or È keys.

At the bottom of Menu is a YES? prompt. To store the calibration values permanently (even through
power failure), press the Ç key. If the È key is pressed from the YES? prompt no changes will be

stored and the system will return to NORMAL mode.

Page 7

TFT32 CALIBRATION MENU
PRESSURE SENSOR INPUT

TFT32 Tank Farm Transmitter

Manual Series 2.4

See Page

#

20.0

123.4

LEVEL CM

CALU

PERCENT INCHES CM

0=

100= 999.9

LO 1056

HI 1.000

roc1

3,4,5, 6 1,2

ro FF

PERCENT

PERCENT

ron

0.0

CM

CM

CM

CM

100.0

CM

98.0

CM

mA DISPLAY
Displays mA signal as received from sensor

NORMAL MODE

CALIBRATION UNITS SELECTION
Press to select inches, cm, percent or blank (other units)

Ç

OUTPUT SPAN CALIBRATION
"0=" Enter minimum reading to be displayed by the TFT32
"100=" Enter maximum reading to be displayed by the TFT32
Wait for the numeric value then press
decrease.

IN-SITU CALIBRATION
Simulate 4mA with 4-20mA input device and enter the minimum
value of input device.

With level 70% of tank enter the current level.
Simulate 20mA with 4-20mA input device and enter the
maximum value from the input device.

RELAY OPERATION CHOICE.
Press to select: 3 = Signal Loss Only

RELAY SET POINTS
Wait for numeric value and press and to adjust Set Points
(in percentage of Span)

>

Ç

1 = Level Alarm 4 = Always ON
2 = Level + Signal Loss 5 = Always OFF

or to increase or

ÇÈ

ÇÈ

18

9

9

10

11

15

dp10

Ad 1

bd19

100.0OPSL

-C.S-

YES

YES?

NO

DAMPING (0-15 secs)
Press to adjust

Ç

TRANSMITTER/TANK ADDRESS
Press to select 1-32

Ç

SERIAL OUTPUT BAUD RATE
Press to select 19 = 19200 4 = 4800

Ç

OUTPUT SIMULATION

CM

Wait for numeric value and press and to increase or
decrease Simulated Output (Automatically returns to NORMAL
mode in 10 minutes)

STORE YES?
Press to store Calibration (displays -C.S-)

Ç

Press Calibration Not Stored

È

9 = 9600 2 = 2400

ÇÈ

16

16

17

Page 8

NORMAL MODE

TFT32 Tank Farm Transmitter

Manual Series 2.4

mA

LEVEL CM

The TFT32 Normal Mode
is always Level

CALIBRATION UNITS SELECTION

Press È from NORMAL mode, display will show:

RELAY

ON - Relay energized
OFF - Relay de-energized

PERCENT INCHES CM

È

LEVEL

CALIBRATION

Ç

INCHES

Ç

PERCENT

Ç

BLANK

Ç

CM

Page 9

(Any Units)

OUTPUT SPAN CALIBRATION

.

.

TFT32 Tank Farm Transmitter

Manual Series 2.4

LEVEL

(Pressure Sensor)

100=
Max Level

The Display will alternate between

È

100=

and

Pressure
Sensor

È

1524

È

1523

È

1522

CM

Ç

0.1

Ç

0.2

Ç

0.3

0=
Zero Level

every 3 seconds

Wait for the numeric value and press Ç to enter the zero level, or minimum level of the tank. With
display on 0 = press È

The Display will alternate between

Wait for the numeric value and press Ç to enter the maximum level of the tank. With display on 100 =
press È.

È

LO

Page 10

and

È

199.9

È

199.8

È

199.7

every 3 seconds

CM

Ç

200.1

Ç

200.2

Ç

200.3