Floatless Relays & Accessories

FRLP 301 230 / 415V

ELECTRONIC DEVICES

KASUGA FLR / FLRP SERIES FLOATLESS RELAYS

OVERVIEW

Floatless relay FLR / FLRP series is a lineup of highly-reliable electrode liquid level relays that electronically detects changes in liquid level for control. The series can be used for automatic liquid control in various locations such as water treatment plants, sewage treatment plants, water supply and sewage systems, conventional plants, buildings etc.

FLOATLESS RELAY FLR / FLRP Series

Features:

  • Automatic operation for water supply or drainage.
  • Installation to DIN rails (excl. FLR204, FLR206).
  • High-sensitivity type and long-distance type are available.
  • Compact plug-in type with built in LED lamps. (FLR 301)
 
Item Specification
Related power supply
100-110/200-220V AC 50/60 Hz, ( FLRP 301 200-220V / 415V AC 50/60 Hz.)
Used voltage range Within -15 to +10% of rated voltage
Ambient temperature -10 to +55°C (No freezing or condensation)
Relative humidity 45 to 85% RH
Output contact capacity 250V AC 5A (resistance load) 250V AC 2A (induction load)
Tolerance 100,000 times or more electrically, 10 million times mechanically)
Insulation resistance 100M ohm or more (500V DC Megger)
Withstand voltage 1500V AC/1 min. (excl. between electrode circuits)
1000V AC/1 min. (between contact terminals)


Item
Specification
Power consumption
FLR501 FLR502, 503
FLR204, 206
FLRP301
Approx 3VA
Approx 6VA
Approx 10VA
Approx 2VA
Material, colour
ABS plastic ( ivory / black)


OPERATION RESISTANCE

Type Operator resistance Recovery resistance Interelectrode voltage
Electrode cable length
Standard type
4k Ohm or more
15k Ohm or less
7 to 9V AC
600mm or less
High-sensitivity
70k Ohm or more
300k Ohm or less
40m or less
Long distance
1k Ohm or more
4k Ohm or less
2km or less


PRODUCT LIST

Model
Application
Compliant
electrode
holder
Approximate
weight
(g)
FLR 501 Automatic standard water-supply/water discharge operation HS3B
280/280
FLR 502 1) Automatic water-supply operation with pump idle prevention
2) Automatic water-supply operation with abnormal low-water supply alarm
HS3B (pair)
HS4B or HF4
440/440
FLR 503 Automatic water-discharge operation with abnormal low-water supply alarm HS3B
440/440
FLR 505 Liquid level display and alarm HS3B
440/440
FLR 204 Automatic water-supply/water-discharge operation with full tank/low-water supply
alarm
HS5B or HF5
720
FLR 206 Automatic water-supply operation with water supply source/tank level display and
pump idle prevention
HS5B or HF5
HS4B or HF4
1050
FLRP 301 Automatic standard water-supply/water- discharge operation (compact plug-in) HS3B
150/160
Remark:
of type name indicates specified option code
(H:high-sensitivity type, L:Long-distance type)


EXTERIOR

TYPE FLR501, FLR502, FLR503, FLR505, FLR204, FLR206, FLRP301 (Complete with socket)


FLOATLESS RELAY (Accessories)

There are 2 types of electrode holders:

screwed-in type and flange type. The screwed-in type 2-inch pipe electrode section can be removed easily. Furthermore, the unit can also be used as a flange-type when attaching the electrode holder HSHS.


Screwed-in type Type name Approximate weight (g)
3 poles HS 3B 180
4 poles HS 4B
-


ELECTRODE HOLDER Flange-type
4-pole flange type (type name: HF4) Approximate weight : 430g


ELECTRODE ROD

Product
Type name Approx. weight (g)
For connection, complete with locknut and joiner (as shown)
PB2
165


CERAMIC SEPARATOR

The separator is used to avoid contact between electrodes when coupling them for use.

HS3B separator (type name: FS3) HS4B/5B separator (type name: FS5A)
Approximate weight: 35 g Approximate weight: 25g


IMMERSION ELECTRODE

Stainless steel (SUS304), 165mm length. Combined with ground electrode and detection electrode, it is optional for use in deep wells. Maximum of 100m cable (10m unit) is available.

Product name Type name Approx. weight (g)
With 1 m cable HI 201 130
With 5 m cable HI 205 -
With 10 m cable HI 210
-


External dimensions (unit mm),
external diagram
VCTFO:
  • 5mm² 2-core
  • Flexible polyvinyl chloride
  • 2 - 7 hole SUS304
  • 165
  • Cord colour
  • White : detection electrode
  • Black: ground electrode