Page 1
Series
3868
Tell Tale Jr.™Open Heater Detector
Indicates Open Loads
13
(0.500)
45
(1.750)
24
(0.938)
19
(0.750)
37
(1.438)
45
1.750
The Tell Tale Jr.
™
Open Heater Detector is designed to indicate an open
heater or other resistive load. Several models are available for various
applications. The LED models light an LED when current is fl owing in the
circuit. If current stops fl owing, the LED turns off. Solid state switch
models provide either a logic output for DC applications or a triac output
for AC applications. These models will satisfy those applications that
need to send heater data to a PLC or computer having an appropriate
power supply. They are provided with 4 foot leads. If the triac output
model is used to drive an inductive load (relay coil, etc.) then the 31380412 snubber network is required. While the Tell Tale Jr.™ Detector is
self-powered there is no power loss in the monitored load circuit when
installed.
™
The Tell Tale Jr.
Detector installs easily in new or existing systems. It
consists of a specially designed doughnut shaped current transformer
that is installed by passing one of the heater hookup wires through its
center one or more times. Nylon tie wraps are included to anchor the
detector to the wire. The detector can be installed on loads with ratings
of 1 to 100 amperes. LED models on a 4 foot extension cable include a
mounting bezel to facilitate mounting the LED on the front of a panelboard. Cables may be extended up to 3,000 feet if necessary using 22 ga.
copper wire.
Ambient temperature range for LED models is 0 to 70°C, logic output 0
to 60°C and triac output 0 to 40°C at 0.5A with de-rating to 0.35A at
60°C.
FEATURES
• Low Cost Current Indication
• Easy Installation
• Indicator or Switch Action
• Draws No Power from Process
• Compact Size
• Isolated - No Direct Contact with Power Lines
Accessories
92
Love Controls • 102 Indiana Highway 212 • Michigan City, IN 46360 • (219)879-8000 • (800)828-4588 • (219)872-9057 fax • www.love-controls.com
SPECIFICATIONS
Indication: Red or green LED depending on model.
Output: Logic: 0.25A @60 VDC max.; Triac: 0.5A @120 VAC.
Operating Temperature:Indication Only: 32 to 158°F (0 to 20°C); Logic:
32 to 140°F (0 to 60°C); Triac: 32 to 104°F (0 to 40°C).
MODELS
Model Number
3868-0150
3868-0180
3868-0160
3868-0170
3868-0140
3868-0130
Internal, Red LED, Indication Only
Internal, Green LED, Indication Only
External, Red LED, 4 ft (1.2 m) Cable, Indication Only
External, Green LED, 4 ft (1.2 m) Cable, Indication Only
Logic Output, No LED, 4 ft (1.2 m) Cable
Triac Output, No LED, 4 ft (1.2 m) Cable
Description
ACCESSORY
Model 3138-0412, Network Snubber
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