GF Signet 8450-3 User manual

page 1 of 8‡ SIGNET 8450-3 Pressure Transmitter
CAUTION!
• Remove power to unit before wiring
input and output connections.
• ollow instructions carefully to avoid
personal injury.
‡ SIGNET 8450-3 Pressure Transmitter ENGLISH
Contents
1. Installation
2. Specifications
3. Electrical Connections
4. Menu unctions
3-8450.090-3
Pressure
Pres1: 4.5 psi
Pres2: 2.3 psi
ENTE
SIDE VIEW
92 mm
(3.6 in.)
97 mm
(3.8 in.)
56 mm
(2.2 in.)
41 mm
(1.6 in.
)
Optional
Rear
Cover
ield Mount Panel Mount
RONT VIEW
96 mm
(3.8 in.)
96 mm
(3.8 in.)
107 mm
(4.2 in.)
96 mm
(3.8 in.)
quick-clips
gasket panel
terminals mounting
bracket
latch
Output -
Output +
System Pwr
Loop -
System Pwr
Loop +
2
14
3
Sensr Gnd
(SHIELD)
Sensr IN
(ED)
Sensr V+
(BLACK)
7
6
5
SIDE VIEW
ield Mount &
Panel Mount Panel Mount
Installation Detail
1. Installation
ProcessPro transmitters are available in two styles: panel mount and field mount. The panel mount is supplied with the necessary
hardware to install the transmitter. This manual includes complete panel mounting instructions.
ield mounting requires one of two separate mounting kits. The 3-8052 integral kit joins the sensor and instrument together into a
single package. The 3-8050 Universal kit enables the transmitter to be installed virtually anywhere.
Detailed instructions for integral mounting or other field installation options are included with the 3-8052 Integral kit or the 3-8050
Universal kit.
1.1 Panel Installation
1. The panel mount transmitter is designed for installation using a 1/4 DIN Punch. or manual panel cutout, an adhesive
template is provided as an installation guide. Recommended clearance on all sides between instruments is 1 inch.
2. Place gasket on instrument, and install in panel.
3. Slide mounting bracket over back of instrument until quick-clips snap into latches on side of instrument.
4. To remove, secure instrument temporarily with tape from front or grip from rear of instrument. DO NOT RELEASE.
Press quick-clips outward and remove.
2. Specifications
General
• Compatibility: +G + SIGNET 2450 Pressure sensors
• System accuracy: ±1% of full scale with 2450 sensors
Enclosure:
• Rating: NEMA 4X/IP65 front
• Case: PBT
• Panel case gasket: Neoprene
• Window: Polyurethane-coated polycarbonate
• Keypad: Sealed 4-key silicone rubber
• Weight: Approx. 325g (12 oz.)
Display:
• Alphanumeric 2 x 16 LCD
• Display update rate: 1 second
• Contrast: User selected, 5 levels
Electrical
• Power: 12 to 24 VDC ±10% regulated, 60 mA max current
• Current output:
4 to 20 mA, isolated, fully adjustable and reversible
• Max loop impedance:
50Ω max. @ 12 V, 325Ω max. @ 18 V, 600Ω max. @ 24 V
• Update rate: 100 ms
• Output accuracy: ±0.03 mA
Open-collector outputs:
• Programmable for High or Low operation
• Optically isolated, 50 mA max. sink
• 30 VDC maximum pull-up voltage.
• Hysteresis: User adjustable
Environmental
• Operating temperature: -10 to 70°C (14 to 158°)
• Storage temperature: -15 to 80°C (5 to 176°)
• Relative humidity: 0 to 95%, non-condensing
• Maximum altitude: 2000 m (6562 ft)
• Insulation category: II
• Pollution degree: 2
Standards and Approvals:
• CSA, CE, UL listed
• Immunity: EN50082-2
• Emissions: EN55011
• Safety: EN61010
• Manufactured under ISO 9001 and ISO 14001
C-1/01 English

page 2 of 8 ‡ SIGNET 8450-3 Pressure Transmitter
Output 2-
Output 2+
Output 1-
Output 1+
10
9
8
7
Loop 2-
Loop 2+
System Pwr
Loop -
System Pwr
Loop +
AUX
Power -
AUX
Power +
6
5
4
3
2
1
Snsr 2 nd
(SHIELD)
Snsr 2 IN
(RED)
Snsr 2 V+
(BLACK)
Snsr 1 nd
(SHIELD)
Snsr 1 IN
(RED)
Snsr 1 V+
(BLACK)
16
15
14
13
12
11
2
1
3. Electrical Connections
Caution: Failure to fully open terminal jaws before removing wire may permanently damage instrument
Wiring Procedure
1 Remove 0 5 - 0 625 in (13-16 mm) of insulation from wire end
2 Press the orange terminal lever downward with a small screwdriver to open terminal jaws
3 Insert exposed (non-insulated) wire end in terminal hole until it bottoms out
4 Release orange terminal lever to secure wire in place Gently pull on each wire to ensure a good connection
Wiring Removal Procedure
1 Press the orange terminal lever downward with a small screwdriver to open terminal jaws
2 When fully open, remove wire from terminal
1
Internal open-collector
output circuit
Outputs
Isolation
15Ω
S
D
2
_
+
Terminals 11-16: Dual digital sensor inputs
See next page for more information
Terminals 3-4: Primary Loop Po er
12-24 VDC ±10% system power and current loop
connections
SINGLE SENSOR system MUST use terminals 3-4
Terminals 5-6: 12-24 VDC ± 10%
Power and current loop connections for second sensor
Max loop impedance:
50 Ω max @ 12 V
325 Ω max @ 18 V
600 Ω max @ 24 V
Terminals 7-10: Open-collector Outputs
Two transistor outputs programmable as High
or Low alarm with adjustable hysteresis
Outputs can be Disabled (Off) if not used
Terminals 1-2: Auxiliary power is used
only if two sensors are connected to the
transmitter

page 3 of 8‡ SIGNET 8450-3 Pressure Transmitter
+G + SIGNET 2450
Pressure Sensors
Terminals
Silver (Snsr 2 Gnd)
Red (Snsr 2 IN)
Black (Snsr 2 V+)
Silver (Snsr 1 Gnd)
Red (Snsr 1 IN)
Black (Snsr 1 V+)
16
15
14
13
12
11
3.2 Sensor Input Connections
Wiring Tips:
• Do not route sensor cable in conduit containing AC power wiring. Electrical noise may interfere with sensor signal.
• Routing sensor cable in grounded metal conduit will help prevent electrical noise and mechanical damage.
• Seal cable entry points to prevent moisture damage.
• Only one wire should be inserted into a terminal. Splice double wires outside the terminal.
• If your system uses a single sensor, it must be located within 400 ft. (122 m) of the transmitter.
• If your system uses two sensors, the total length of cable connected to the transmitter is limited to 400 ft.
• The 3 conductors from a dual-sensor system can be tied together and then a single set of wires continued on to the transmitter.
• or best performance, ground the sensor SHIELD wire to a local earth ground at a point near the sensor.
(Experiment with connecting the sensor shield wire to different local ground points to identify best signal quality.)
Transmitter
A
A + B ≤ 400 ft. (122 m)
A
B
Transmitter
≤ 400 ft. (122 m)
J-box
Transmitter
A
B
C
A + B + C ≤ 400 ft. (122 m)
Stand-alone application, no current loop used
Transmitter
Terminals
6
5
4
3
2
1
Loop2-
Loop2+
Sys. Pwr.
Loop -
Sys. Pwr.
Loop +
AUX
Power -
AUX
Power +
Power Supply
DC 12 - 24 V
Power
Supply
Power
Supply
Connection to a PLC with built-in power supply
PLC
Terminals
Power Supply
Ground
Power
Supply
Channel 2
4-20 mA in
Channel 2
4-20 mA in
Channel 1
4-20 mA in
Channel 1
4-20 mA in
Internal PLC
Connection
NC
NC
Connection to a PLC/Recorder, separate supply
PLC or ecorder
Channel 2
4-20 mA in
Channel 2
4-20 mA in
Channel 1
4-20 mA in
Channel 1
4-20 mA in
DC 12 - 24 V
Power
Supply
Power
Supply
PLC or ecorder
- Channel 4
+ Channel 4
- Channel 3
+ Channel 3
- Channel 2
+ Channel 2
- Channel 1
+ Channel 1
DC 12 - 24 V
Power
Supply
Power
Supply
Transmitter
Terminals
6
5
4
3
2
1
Loop2-
Loop2+
Sys. Pwr.
Loop -
Sys. Pwr.
Loop +
AUX
Power -
AUX
Power +
Transmitter
Terminals
6
5
4
3
2
1
Loop2-
Loop2+
Sys. Pwr.
Loop -
Sys. Pwr.
Loop +
AUX
Power -
AUX
Power +
6
5
4
3
2
1
Loop2-
Loop2+
Sys. Pwr.
Loop -
Sys. Pwr.
Loop +
AUX
Power -
AUX
Power +
6
5
4
3
2
1
Loop2-
Loop2+
Sys. Pwr.
Loop -
Sys. Pwr.
Loop +
AUX
Power -
AUX
Power +
Transmitter 1 Transmitter 2
Example: Two transmitters connected to PLC/Recorder
with separate power supply
* See Aux power Note
* Note: AUX power required only where two sensors are used
*
* See Aux power Note
* See AUX
p
ower note
-
+
-
+
-
+
-
+
-
+
-
+
-
+-
+
3.1 System Power/Loop Connections

page 4 of 8 ‡ SIGNET 8450-3 Pressure Transmitter
Press1: 7.89 psi
Press2: 2.45 psi
Delta Pressure:
3.21 psi
Loop 1 Output:
12.00 mA
Loop 2 Output:
7.65 mA
Last Cal
06-30-00
Monitor Pressure 1 and Pressure 2 simultaneously.
This is the actory Preset display.
Monitor the difference between Pressure 1 and pressure 2. (Press1 - Press2)
Monitor Loop 1 and Loop 2 mA outputs. This display will revert to the factory
preset after 10 minutes.
Monitor date for scheduled maintenance or date of last calibration. This
display will revert to the factory preset after 10 minutes.
Delta Pressure (Differential Mode)
If two sensors are connected to the transmitter, the DELTA
(Sensor 1 - Sensor 2) can be assigned to output. To enable
differential mode, the selected output's "Source" selection must
be set to "DP".
or pressure and temperature transmitters ensure Sensor 1 is
equal to ID 1:
Sensor 1 - Sensor 2
Difference = 60
Example: 4-20 mA
Loop1 Source: DP
Loop1 Range: 0-120
Loop1: = 12.00 mA
Example: Output
Output1 Source: DP
Output1 Mode: Low
Output1 Setpoint: 70
Output1 = ON
+GF+ SIGNET
ENTE
Sensor 1 (80)
Sensor 2 (20)
Pressure
Pres1: 4.5 psi
Pres2: 2.3 psi
ENTE
3.3 Open Collector Output
The Open Collector output can be used as a switch that responds
when the process variable moves above or below a setpoint.
•Low:
Output triggers when process variable is less than the setpoint.
The output will relax when the process variable moves above the
setpoint plus the hysteresis value.
•High:
Output triggers when process variable is greater than the setpoint.
The output will relax when the process variable moves below the
setpoint plus the hysteresis value.
Hysteresis
Time
Low Setpoint
Process
Hysteresis
Output active
Output inactive
Time
High Setpoint
Process
VIEW menu
• During normal operation, the ProcessPro displays the VIEW menu.
• When using the CALIBRATE or OPTIONS menus, the ProcessPro will return to the VIEW menu if no
activity occurs for 10 minutes.
• To select the item you want displayed, press the UP or DOWN arrow keys. The items will scroll in a
continuous loop.
• Changing the display selection does not interrupt system operations.
• No keycode is necessary to change display selection.
• Output settings cannot be edited from the VIEW menu.
View Menu
Display Description

page 5 of 8‡ SIGNET 8450-3 Pressure Transmitter
Notes on Steps 5 and 6:
• All output functions remain active during editing.
• Only the flashing element can be edited.
• RIGHT ARROW key advances the flashing element in a continuous loop.
• Edited value is effective immediately after pressing ENTER key.
• If no key is pressed for 10 minutes unit will restore the last saved value and return to step 3.
• Step 6 (pressing ENTER key) always returns you to Step 3.
• Repeat steps 3-6 until all editing is completed.
Notes on Step 2:
If no key is pressed for 5 minutes while display is showing "Enter
Key Code", the display will return to the VIEW menu.
Notes on Steps 3 and 4:
• Refer to pages 6 and 7 for complete listing of menu items and their use.
• rom the Step 3 display, pressing the UP and DOWN keys simultaneously will
return the display to the VIEW menu.
• If no key is pressed for 10 minutes, display will also return to the VIEW menu.
ProcessPro Editing Procedure:
Step 1. Press and hold ENTE key:
• 2 seconds to select the CALIBRATE menu
• 5 seconds to select the OPTIONS menu.
Step 2. The Key Code is UP-UP-UP-DOWN keys in sequence.
• After entering the Key Code, the display will show the first item in the selected menu.
Step 3. Scroll menu with UP or DOWN arrow keys.
Step 4. Press IGHT A OW key to select menu item to be edited.
• The first display element will begin flashing.
Step 5. Press UP or DOWN keys to edit the flashing element.
• RIGHT ARROW key advances the flashing element.
Step 6. Press ENTE key to save the new setting and return to Step 3.
OPTIONS
CALIB ATE
VIEW
2s 5s
Press &
hold for
access:
ENTE
Step 5
Step 6
Notes on Step 1:
• The View Menu is normally displayed.
• The CALIBRATE and OPTIONS menus require a KEY CODE.
Step 4
irst item in
CALIBRATE menu
Step 3
Step 3: Finished Editing?
Press the UP and DOWN keys simultaneously after
saving the last setting to return to normal operation.
Press the UP and DOWN keys simultaneously
while any element is flashing. This will recall the
last saved value of the item being edited and
return you to Step 3.
Step 5: Made an Error?
CALIBRATE: ----
Enter Key Code
CALIBRATE: *---
Enter Key Code
CALIBRATE: **--
Enter Key Code
CALIBRATE: ***-
Enter Key Code
>
Switch ID:
Output1 Setpnt:
10.00 psi
Output1 Setpnt:
00.00 psi
ENTE
Output1 Setpnt:
0
0 .00 psi
Output Setpnt:
09.00 psi
Output1 Setpnt:
Saving
Output1 Setpnt:
09.00 psi >
>
Switch ID:
10.00 psi >
Output1 Setpnt:

page 6 of 8 ‡ SIGNET 8450-3 Pressure Transmitter
Switch ID
psi >
Pressure Units:
psi >
Set:
Pressure1 >
Set:
Pressure2 >
Loop 1 Source
Press1 >
Loop 1 Range: psi
0.0 →100.0 >
Output1 Source
Press1 >
Output1 Mode
Low >
Output1 Setpnt:
10.0 psi >
Output1 Hys:
5>
Last Cal
06-30-01 >
Reverses the identification of Sensor inputs: Pressure 1 becomes identified as Pressure
2, Pressure 2 becomes identified as Pressure1.
Use this function to make corrections if the sensors are in the wrong order for a DELTA
PRESSURE measurement.
Select Pressure units for both input channels: psi, bar or kPa.
Provides a maximum 5 psi offset to match 8450 to external reference.
Enter “-999” to restore the original actory calibration value.
Changes to this setting will become effective when the display exits the Calibrate menu.
Select the INPUT SIGNAL represented by this 4-20 mA output:
Pressure 1, Pressure 2, or Delta Pressure (Pressure1 - Pressure2.)
Check the 2450 Sensor instructions for the range capability of your sensor.
Be sure to modify this setting if you change the Pressure Units.
Select the INPUT SIGNAL represented by this Open Collector Output: Pressure 1,
Pressure 2, or the Delta Pressure (Pressure1 - Pressure2.)
Select the mode of operation for this Open Collector output:
O , LOW or HIGH.
The Open Collector Output will be activated when the pressure reaches this value. Be
sure to modify this setting if you change the Pressure Units.
The Open Collector Output will be deactivated at setpoint ± Hysteresis (depending on
High or Low selection).
Use this “note pad” to record important dates, such as annual recertification or
scheduled maintenance.
Calibrate Menu
Display
(Factory settings shown) Description
Settings will repeat for Loop 2 and Output 2.

page 7 of 8‡ SIGNET 8450-3 Pressure Transmitter
Contrast:
3>
Decimal
***.* >
Averaging
Off >
Output1 Active
Low >
Output2 Active
Low >
Loop 1 Adjust:
4.00 mA >
Loop 1 Adjust:
20.00 mA >
Test Loop 1:
>
Test Loop 2:
>
Test Output 1
>
Test Output 2
>
Adjust the LCD contrast for best viewing. A setting of 1 is lower contrast, 5 is higher.
In general, select lower contrast if the display is in warmer ambient surroundings.
Set the decimal to the best resolution for your application. The display will automatically
scale up to this restriction. Select ****., ***.*, **.** or *.***.
O provides the most instantaneous response to changes in pressure. It is the preferred
option in systems where the measurement is very stable.
Select LOW or HIGH averaging if your process experiences frequent or extreme
fluctuations in pressure.
Active HIGH: This setting is used to turn a device (pump, valve) ON at the setpoint.
Active LOW: This setting is used to turn a device O at the setpoint.
Adjust the minimum and maximum current output. The display value represents the
precise current output. Adjustment limits:
• 3.80 mA < 4.00 mA > 5.00 mA
• 19.00 mA < 20.00 mA > 21.00 mA
Use this setting to match the system output to any external device.
Press UP and DOWN keys to manually order any output current value from 3.6 mA to
21.00 mA to test the output loop.
Press UP and DOWN keys to manually toggle the Open Collector output state.
Settings will repeat for Loop 2 and Output 2.
Options Menu
Display
(Factory settings shown) Description

page 8 of 8 ‡ SIGNET 8450-3 Pressure Transmitter
"Check Sensor?"
"Too much error
CHECK SENSOR"
"Reset to Factory
Calibration"
Relay is al ays activated
"SETUP READ ERROR
Press Any Key"
• Sensor not wired properly
• Sensor connected to 8450 while power
is on
• Defective sensor
The value entered in Set Pressure field is
greater than 5 psi deviation from sensor
input (The 8450 allows a maximum of 5 psi
calibration offset )
Value in SET PRESSURE field is -999
Hysteresis value too large
Memory fault occurred
• Correct sensor wiring
• Recycle power to 8450 after all sensors are
connected
• Replace defective sensor
• Confirm calibration values
• Remove sensor from installation, check 8450
reading (should be zero) If necessary, Set
Pressure to zero, reinstall sensor, then
recalibrate
Entering "-999" in this field will remove all user
calibration input and restore the factory values
Reset hysteresis value in Calibrate menu
• Press any key to reload factory presets
• Reprogram all setpoints
• If this message appears again, replace the 8450
Product Modifications
In August 2000 the operation of the 8450 Pressure Transmitter was modified to allow control of the decimal in the display via the
OPTIONS menu
Products manufactured prior to August 2000 are limited to one fixed decimal place (XXX X)
Display Condition Suggested SolutionsPossible Causes
Troubleshooting
‡ SIGNET
Signet Scientific Company, 3401 Aerojet Avenue, El Monte, CA 91731-2882 U.S.A. • Tel. [phone] • Fax [phone]
For World ide Sales and Service, visit our ebsite: .gfsignet.com • Or call (in the U.S.): [phone]
GEORGE FISCHER ‡ Piping Systems
3-8450 090-3/(C-1/01) English © Signet Scientific Company 2001 Printed in U S A on recycled paper