Macromatic SFP Series Catalog Page
PUMP SEAL FAILURE RELAYS
Plug-in
Single & Dual Channel
u Monitors Submersible Pump
Seals for Leakage
u Single or Dual Channel for
Monitoring 1 or 2 Pumps
u Three Adjustable Sensitivity
Ranges
u Optional Fixed Sensitivity
Setting Available
SFP Series Pump Seal Failure Relays are designed to monitor the shaft seals of submersible pumps. A resistive-measuring probe is installed in the pump seal cavity. If the
seal starts to leak, c ontaminatin g fluid enters the seal cavity, lowerin g the resistanc e
between the internal probe & the common connection. When the resistance drops below
the user-adjustable sensitivity set-point of the relay, the output relay energizes & the LED
turns ON. The relay output can be used to give an alarm indication of a leaking seal.
These products will automatically reset when the fault condition clears.
Single Channel Dual Channel
u Optional Low-Profile
Adjustment Knob
u Uses industry-standard 8 &
11 pin octal sockets
u
with appropriate
socket
Three output configurations are offered: an 8 pin SPDT single channel relay & an 11 pin
DPDT single channel relay to monitor a single pump, and an 8 pin dual channel relay
(with 2 SPNO contacts) to monitor two pumps. In addition to the three adjustable
sensitivity ranges offered, relays with fixed values are available--contact Macromatic for
more information (minimum quantities apply). An optional low-profile adjustment knob to
prevent accidental change of setting is also available (see footnote below).
INPUT SENSITIVITY PRODUCT WIRING/
CONFIGURATION VOLTAGE RANGE NUMBER u SOCKET n
SINGLE 120V AC 10K to 25KΩ SFP120A025 8 Pin Octal
CHANNEL 4.7K to 100KΩ SFP120A100 70169-D
8 Pin SPDT 10K to 250KΩ SFP120A250
240V AC 10K to 25KΩ SFP240A025
4.7K to 100KΩ SFP240A100
10K to 250KΩ SFP240A250
DIAGRAM 163
SINGLE 120V AC 10K to 25KΩ SFP120B025 11 Pin Octal
CHANNEL 4.7K to 100KΩ SFP120B100 70170-D
11 Pin DPDT 10K to 250KΩ SFP120B250
240V AC 10K to 25KΩ SFP240B025
4.7K to 100KΩ SFP240B100
10K to 250KΩ SFP240B250
800-238-7474
46
DIAGRAM 162
DUAL 120V AC 10K to 25KΩ SFP120C025 8 Pin Octal
CHANNEL 4.7K to 100KΩ SFP120C100 70169-D
8 Pin (2) SPNO 10K to 250KΩ SFP120C250
240V AC 10K to 25KΩ SFP240C025
4.7K to 100KΩ SFP240C100
10K to 250KΩ SFP240C250
uTo order a product with a low-profile adjustment knob, add the suffix “L” to the Product Number, i.e.,
SFP120A100L.
n See Pages 81 & 82 for Sockets & Accessories.
DIAGRAM 164
1/09
Typical Installations
PUMP SEAL FAILURE RELAYS
Plug-in
Single & Dual Channel
Application Data & Dimensions
Dual ChannelSingle Channel
Application Data
Voltage Tolerance:
AC Operation: +10/-15% of nominal at 50/60 Hz.
Load (Burden)
:
2 VA
Probe Voltage
:
9V DC
Response Time
:
Pick-up: 10ms
Drop-out: 10ms
LED Indicator
:
Red O N when seal leak detected & relay energized.
Temperature
:
-28o to 65oC (-18o to 150oF)
Dimensions
Output Contacts:
Single Channel Relays: 10A @ 240V AC / 7A @ 30V DC,
1/4HP @ 120/240V AC
Dual Channel Relays: (2) 5A @ 240V AC / 5A @ 30V DC,
1/4HP @ 120/240V AC
Life
:
Mechanical: 10,000,000 operations
Full Load: 100,000 operations
Insulation Voltage
:
2,000 volts
Approvals
:
File #E109466
with
appropriate
socket
File #E109466
Low Voltage &
EMC Directives
EN60947-1, EN60947-5-1
1/09
2.4
(60)
1.7
(43)
2.9
(74)
3.2
(80)
All Dimensions in
Inches (Millimeters)
47
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