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‡ SIGNET 8450 Pressure Transmitters
3-8450-X (Field)
3-8450-XP (Panel)
Features
•S3L input
• psi, Bar, or
kPa display
• Integral or
remote mounting
• Single point
calibration
• Dual input/output
option
• Output simulation
function for complete
system testing
• Relay option
• Output scalability
• NEMA 4X/IP65
• Splashproof enclosure
• 2 x 16 character
dot matrix LCD
• Chemical resistant
enclosure and selfhealing window
• Large pushbuttons
Description
The +GF+ SIGNET 8450 Pressure
Transmitter is a unique instrument that
converts the signal from the +GF+
SIGNET 2450 pressure sensor into a
4 to 20 mA output for long distance
transmission. State-of-the-art electronic
design offers a single-point calibration.
Configuration flexibility is maximized
with optional relays for process control,
packaging options for integral/pipe
mount or panel installation and dual
input/output capability.
Technical Features
Mounting Version Part No. 4 to 20 mA
Field
Panel
3-8450-1
3-8450-2
3-8450-3
3-8450-1P
Wire
Power
2
4
4
2
Sensor
Input
1
1
2
1
Output
1
1
2
Sensor1,
Sensor 2
or delta P
1
Open Collector/
Relay
1 O.C. Hi, Lo or Off
2 Relays Hi, Lo or Off
2 O.C.’s Hi, Lo or Off
1 O.C. Hi, Lo or Off
Application
• Pump, filter or pipe
protection
• Pressure regulation/
monitoring
• Over or under
pressure alarm
• Pump servicing
• HVAC systems
• Chemical processing
• Scrubbers
• Marine
• Water management
• Irrigation systems
• Waste water
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3-8450-2P
3-8450-3P
4
4
1
2
1
2
Sensor1,
Sensor 2
or delta P
2 Relays Hi, Lo or Off
2 O.C.’s Hi, Lo or Off
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Dimensions
Panel Mount
96 mm (3.8 in.)
96 mm;
(3.8 in.)
41 mm;
(1.6 in.)
Optional;
Rear Cover
56 mm;
(2.2 in.)
97 mm;
(3.8 in.)
Panel Cutout
92 x 92 mm;
(+0.8, -0 mm)
3.6 x 3.6 in.;
(+0.031, -0 in.)
Integral/Universal Mount
96 mm (3.8 in.)
96 mm;
(3.8 in.)
108 mm;
(4.25 in.)
82 mm;
(3.23 in.)
Installation
The transmitter is available in a panel mount or a field version. Select either the universal mount kit (3-8050) to
mount the transmitter on a surface near the sensor or select the integral mount kit (3-8052) to mount the transmitter
onto the sensor.
1. Panel Mount
3-8450-XP
2. Universal Mount
3. Integral Mount
3-8450-X Transmitter3-8450-X Transmitter
3-8052 Kit
All panel mount transmitters
(3-8450-XP) include everything for
panel installation. Panel mount
transmitters fit into a standard 1/4
DIN panel cutout.
Pressure Transmitter<
(3-8450-XP) includes:;
mounting bracket;
and panel gasket
Pressure Sensor (example)<
(3-2450-1L);
(3-2450-1H);
(3-2450-1U)
PPStandard 3/4 in.<
NPT Fitting
;
3-8050 Kit
The Universal Mount Kit (3-8050)
includes a conduit base, locking
ring, and universal adapter for
mounting the transmitter on a pipe,
wall, or other stationary surface.
Pressure Transmitter<
(3-8450-X)
Universal Adapter Kit<
(3-8050) includes:;
locking ring;
conduit base;
universal adapter;
(for pipe, wall)
Pressure Sensor (example)<
(3-2450-1L);
(3-2450-1H);
(3-2450-1U)
Standard 3/4 in.<
NPT Fitting
The Integral Mount Kit (3-8052)
includes a conduit base, locking
ring, and integral adapter for
mounting the transmitter and sensor
directly into a pipe.
Pressure Transmitter<
(3-8450-X)
Integral Adapter Kit<
(3-8052) includes:;
locking ring;
conduit base;
integral adaper
Pressure Sensor (example)<
(3-2450-2L);
(3-2450-2H);
(3-2450-2U)
Standard 3/4 in.<
NPT Fitting
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Rear Terminal View
System Pwr<
2<
Loop -
System Pwr<
1
Loop +
Terminal 8450-1
4<
<
3
Output -
Output +
7<
6<
5
<
Sensr Gnd<
(WHITE)<
<
Sensr IN<
(RED)<
<
Sensr V+<
(BLACK)
System Pwr<
4<
Loop -<
<
<
System Pwr<
3<
Loop +<
<
AUX<
2<
Power - <
<
AUX<
Power +
1
Terminal 8450-2
10<
<
Relay 2<
(NO)<
<
Relay 2<
9<
(COM)<
<
Relay 2<
8<
(NC)<
<
Relay 1<
7<
(NO)<
<
<
Relay 1<
6<
(COM)<
<
Relay 1<
5
(NC)<
<
13<
12<
11
Sensr Gnd<
(WHITE)<
<
Sensr IN<
(RED)<
<
Sensr V+<
(BLACK)
6<
5<
4<
3<
2<
1
Loop 2-<
<
<
Loop 2+<
<
<
System Pwr<
Loop -<
<
System Pwr<
Loop +<
<
AUX<
Power -<
<
AUX<
Power +
10<
9<
8<
7
<
<
Output 2-<
<
<
<
<
<
Output 2+<
<
<
Output 1-<
<
<
<
<
<
Output 1+
Terminal 8450-3
Technical Data
General
Compatibility:
Pressure Sensor (S
Accuracy: ±1% of full scale
Repeatability: ±0.5% of full scale
Enclosure:
• Rating: NEMA 4X/IP65 front
• Case: PBT
• Panel case gasket: Neoprene
• Window: Polyurethane coated
polycarbonate
• Keypad: Sealed 4-key
silicone rubber
Display:
• Alphanumeric 2 x 16 LCD
• Update rate: 1 second
• Contrast: User selected, 5 levels
Shipping Weight: 0.325 kg (0.8 lbs.)
Environmental
Operating temperature:
-10 to 70°C (14 to 158°F)
Storage temperature:
-15 to 80°C (5 to 176°F)
Relative humidity:
0 to 95%, non-condensing
Standards and Approvals
• CSA, CE, UL listed
• Manufactured under ISO 9001 and
ISO 14001
+GF+
SIGNET 2450
3
L input)
Snsr 2 Gnd<
16<
(SHIELD)<
15<
14<
13<
12<
11
<
Snsr 2 IN<
(RED)<
<
Snsr 2 V+<
(BLACK)<
<
Snsr 1 Gnd<
(WHITE)<
<
Snsr 1 IN<
(RED)<
<
Snsr 1 V+<
(BLACK)
Note: The terminal blocks are not labeled on the
back of the unit. An adhesive label is supplied with
terminal descriptions to serve as a remote terminal
display.
Electrical
Power:
• 12 to 24 VDC ±10% regulated
(-1) 21 mA max.: (-2) 220 mA max.:
(-3) 60mA max.
Sensor Input:
• Range: 0 to 250 psig, 0 to 17 bar,
0 to 1700 kPa
Current output:
• 4 to 20 mA, isolated, fully adjustable
and reversible
• Max loop impedance:
50Ω max. @ 12 V
325Ω max. @ 18 V
600Ω max. @ 24V
• Update rate: 100 ms
• Accuracy: ±0.03 mA
Relay output:
• Mechanical SPDT contacts:
Hi, Lo, Off
• Maximum voltage rating: 5 A @ 30
VDC, 5 A @ 250 VAC resistive load
• Hysteresis: User adjustable
Open-collector output: Hi, Lo, Off
• Open-collector, optically isolated,
50 mA max, sink, 30 VDC max.
pull-up voltage.
• Hysteresis: User adjustable
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Ordering Information
Mfr. Part No. Code Description
3-8450-1 159 000 041 Pressure transmitter, Field mount
3-8450-1P 159 000 042 Pressure transmitter, Panel mount
3-8450-2 159 000 043 Pressure transmitter, Field mount with relays
3-8450-2P 159 000 044 Pressure transmitter, Panel mount with relays
3-8450-3 159 000 045 Pressure transmitter, Field mount with dual input/output
3-8450-3P 159 000 046 Pressure transmitter, Panel mount with dual input/output
Accessories
Mfr. Part No. Code Description
3-8050 159 000 184 Universal mounting kit
3-8050.395 159 000 186 Transmitter NEMA 4X cover
3-8052 159 000 188 3/4 in. Integral mounting kit
3-8052-1 159 000 755 3/4 in. NPT mount junction box
3-8050.396 159 000 617 RC Filter kit (for relay use)
3-0000.596 159 000 641 Heavy duty wall mount bracket
3-5000.598 198 840 225 Surface Mount Bracket
3-9000.392 159 000 368 Liquid tight connector kit for rear cover (includes 3 connectors)
3-9000.392-1 159 000 839 Liquid tight connector kit, NPT (1 piece)
3-9000.392-2 159 000 841 Liquid tight connector kit, PG13.5 (1 piece)
Engineering Specifications
• The transmitter shall be CSA, UL and CE listed.
• The transmitter shall be manufactured under ISO 9001 and ISO 14001 certified processes.
• The transmitter shall be field or panel mountable.
• The pressure shall be displayed in bar, psi, or kPa
• The display units shall be fully scaleable.
• The device shall meet NEMA 4X and IP65 standards.
• The operating voltage shall be 12 to 24 VDC.
• The transmitter shall have a 4 to 20 mA output with an open collector output, 5 to 30 VDC or a 4 to 20 mA
output with 2 relays, or a 4 to 20 mA output with dual open collector with delta capability.
• The transmitter shall have simulate capability.
• The transmitter shall be
+GF+
SIGNET 8450 Pressure Transmitter.
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